This is the documentation for Cloudera Manager 5.1.x.
Documentation for other versions is available at Cloudera Documentation.

Cloudera Management Service Properties

Activity Monitor Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Event Publication Maximum Queue Size The maximum size of the queue in which events published from this role will be buffered. If this queue becomes full (for example, due to an outage), subsequent events will be dropped. activityevents.event.publish.queue.max 20000 actmon_event_publication_queue_size_max true
Event Publication Retry Period If an event cannot be delivered immediately by this role, this value controls how long to wait before Event Publisher retries delivery. activityevents.event.publish.retry.ms 5000 actmon_event_publication_retry_period true
Java Configuration Options for Activity Monitor These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. firehose_java_opts false
Activity Monitor Advanced Configuration Snippet (Safety Valve) for cmon.conf For advanced use only, a string to be inserted into cmon.conf for this role only. firehose_safety_valve false
Activity Monitor Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true

Database

Display Name Description Related Name Default Value API Name Required
Activity Monitor Database Hostname Name of host where Activity Monitor's database is running. It is highly recommended that this database is on the same host as the Activity Monitor. If the database is not running on its default port, specify the port number using this syntax: 'host:port' localhost firehose_database_host false
Activity Monitor Database Name Name of the Activity Monitor's database. firehose_database_name true
Activity Monitor Database Password Password for logging in to the Activity Monitor database db.hibernate.connection.password firehose_database_password false
Activity Monitor Database Type Type of database to use for Activity Monitor. mysql firehose_database_type false
Activity Monitor Database Username Username for logging in to the Activity Monitor database. db.hibernate.connection.username firehose_database_user true

Logs

Display Name Description Related Name Default Value API Name Required
Activity Monitor Logging Threshold The minimum log level for Activity Monitor logs INFO log_threshold false
Activity Monitor Maximum Log File Backups The maximum number of rolled log files to keep for Activity Monitor logs. Typically used by log4j. 10 max_log_backup_index false
Activity Monitor Max Log Size The maximum size, in megabytes, per log file for Activity Monitor logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Activity Monitor Activity Monitor Pipeline Monitoring Thresholds The health test thresholds for monitoring the Activity Monitor activity monitor pipeline. This specifies the number of dropped messages that will be tolerated over the monitoring time period. Warning: Never, Critical: Any activitymonitor_activity_monitor_pipeline_thresholds false
Activity Monitor Activity Monitor Pipeline Monitoring Time Period The time period over which the Activity Monitor activity monitor pipeline will be monitored for dropped messages. 5 minute(s) activitymonitor_activity_monitor_pipeline_window false
Activity Monitor Activity Tree Pipeline Monitoring Thresholds The health test thresholds for monitoring the Activity Monitor activity tree pipeline. This specifies the number of dropped messages that will be tolerated over the monitoring time period. Warning: Never, Critical: Any activitymonitor_activity_tree_pipeline_thresholds false
Activity Monitor Activity Tree Pipeline Monitoring Time Period The time period over which the Activity Monitor activity tree pipeline will be monitored for dropped messages. 5 minute(s) activitymonitor_activity_tree_pipeline_window false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % activitymonitor_fd_thresholds false
Activity Monitor Host Health Test When computing the overall Activity Monitor health, consider the host's health. true activitymonitor_host_health_enabled false
Pause Duration Thresholds The health test thresholds for the weighted average extra time the pause monitor spent paused. Specified as a percentage of elapsed wall clock time. Warning: 30.0, Critical: 60.0 activitymonitor_pause_duration_thresholds false
Pause Duration Monitoring Period The period to review when computing the moving average of extra time the pause monitor spent paused. 5 minute(s) activitymonitor_pause_duration_window false
Activity Monitor Process Health Test Enables the health test that the Activity Monitor's process state is consistent with the role configuration true activitymonitor_scm_health_enabled false
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. true activitymonitor_web_metric_collection_enabled false
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. Warning: 10 second(s), Critical: Never activitymonitor_web_metric_collection_thresholds false
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Instead, use .*, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Use .* instead, alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Event Publication Log Quiet Time Period To avoid producing excessive amounts of log output, the Event Publisher component of this role is limited to emitting one message per time period. This value controls the size of that time period. activityevents.event.publish.log.suppress.window.ms 1 minute(s) actmon_event_publication_log_suppress_window true
Purge Activities Data at This Age In Activity Monitor, purge data about MapReduce jobs and aggregate activities when the data reaches this age in hours. By default, Activity Monitor keeps data about activities for 336 hours (14 days). firehose.activity.purge.duration.hours 14 day(s) firehose_activity_purge_duration_hours false
Purge Attempts Data at This Age In the Activity Monitor, purge data about MapReduce attempts when the data reaches this age in hours. Because attempt data may consume large amounts of database space, you may wish to purge it more frequently than activity data. By default, Activity Monitor keeps data about attempts for 336 hours (14 days). firehose.attempt.purge.duration.hours 14 day(s) firehose_attempt_purge_duration_hours false
Activity Monitor Log Directory Location of log files for Activity Monitor /var/log/cloudera-scm-firehose mgmt_log_dir false
Purge MapReduce Service Data at This Age The number of hours of past service-level data to keep in the Activity Monitor database, such as total slots running. The default is to keep data for 336 hours (14 days). timeseries.expiration.hours 14 day(s) timeseries_expiration_hours false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Activity Monitor Debug Port Port for Activity Monitor's Debug page. Set to -1 to disable the debug server. debug.servlet.port 8087 firehose_debug_port false
Activity Monitor Listen Port Port where Activity Monitor is listening for agent messages. firehose.server.port 9999 firehose_listen_port false
Activity Monitor Nozzle Port Port where Activity Monitor's query API is exposed. nozzle.server.port 9998 firehose_nozzle_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Activity Monitor in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 1 GiB firehose_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Alert Publisher Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Java Configuration Options for Alert Publisher These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. alertpublisher_java_opts false
Alert Publisher Advanced Configuration Snippet (Safety Valve) for alertpublisher.conf For advanced use only, a string to be inserted into alertpublisher.conf for this role only. alertpublisher_safety_valve false
Alert Publisher Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true

Logs

Display Name Description Related Name Default Value API Name Required
Alert Publisher Logging Threshold The minimum log level for Alert Publisher logs INFO log_threshold false
Alert Publisher Maximum Log File Backups The maximum number of rolled log files to keep for Alert Publisher logs. Typically used by log4j. 10 max_log_backup_index false
Alert Publisher Max Log Size The maximum size, in megabytes, per log file for Alert Publisher logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % alertpublisher_fd_thresholds false
Alert Publisher Host Health Test When computing the overall Alert Publisher health, consider the host's health. true alertpublisher_host_health_enabled false
Alert Publisher Process Health Test Enables the health test that the Alert Publisher's process state is consistent with the role configuration true alertpublisher_scm_health_enabled false
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Alerts: Enable Email Alerts This setting allows you to turn email alert delivery on and off. mailserver.enabled true alert_mailserver_enabled false
Alert: Mail From Address The 'From' address to use for alert emails noreply@localhost alert_mailserver_from_address false
Alerts: Mail Server Hostname The IP address or hostname of the mail server to send alerts to localhost alert_mailserver_hostname true
Alerts: Mail Server Password The password to use to log into the mail server. Warning: this password will be sent over the network to the Alert Publisher host in clear text. In addition, the password will be stored in a plain text file on the Alert Publisher host with restrictive file system permissions. alert_mailserver_password false
Alerts: Mail Server Protocol The protocol to use for sending email alerts. smtp alert_mailserver_protocol true
Alerts: Mail Message Recipients A comma-separated list of email addresses to send alerts to root@localhost alert_mailserver_recipients true
Alerts: Mail Server Username The username to use to log into the mail server alert_mailserver_username false
Alert Publisher: Maximum Batch Size The Alert Publisher can be configured to batch multiple alerts into a single email. This setting specifies the maximum number of alerts that will be batched into a single email (regardless of the batch interval). alert.aggregate.maxSize 32 alertpublisher_aggregate_max_size false
Alert Publisher: Maximum Batch Interval The Alert Publisher can be configured to batch multiple alerts into a single email. This setting specifies the maximum amount of time (in milliseconds) that the Alert Publisher waits before sending an email of the current batch. alert.aggregate.timeout.millis 1 minute(s) alertpublisher_aggregate_timeout false
Alerts: Email footer Optional. If not empty, the text entered here will be inserted verbatim as a footer in HTML and plain-text emails. alert.email.footer alertpublisher_email_footer false
Alerts: Email header Optional. If not empty, the text entered here will be inserted verbatim as a header in HTML and plain-text emails. alert.email.header alertpublisher_email_header false
Alerts: Mail Message Format The format of the email alert message. The 'JSON' format is easy for scripts/programs to parse. The 'HTML' and 'text' formats are designed to be easily read by people. mail.format html mail_format true
Alert Publisher Log Directory Directory where Alert Publisher will place its log files. /var/log/cloudera-scm-alertpublisher mgmt_log_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Alerts: Mail Server TCP Port Optional. The TCP port where the mail server is listening. If not specified, defaults to 25 if SMTP is selected, or 465 if SMTPS is selected. alert_mailserver_port false
Alerts: Listen Port Port where the Alert Publisher listens for internal API requests. alertpublisher.internalapi.port 10101 alertpublisher_internalapi_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Alert Publisher in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 256 MiB alert_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

SNMP

Display Name Description Related Name Default Value API Name Required
SNMP Authentication Protocol Pass Phrase Pass phrase to use for SNMP authentication protocol alert.snmp.auth.password alert_snmp_auth_password false
SNMP Authentication Protocol Authentication algorithm to use for authentication alert.snmp.auth.protocol SHA alert_snmp_auth_protocol false
SNMPv2 Community String Community string to use to identify this service. Generated SNMPv2 traps will use this string for authentication purpose. alert.snmp.community alert_snmp_community false
SNMP Retry Count Number of time to try before trap is timed out. If this value is set to '0' the trap will be sent only once. alert.snmp.retries 0 alert_snmp_retries true
SNMP Server Engine Id Engine Id to use for authentication and privacy. Engine Id is normally a hexadecimal number (e.g. 8000173e03a0c095f80c68). Engine Id along with pass phrases are used to generate keys for authentication and privacy protocols. alert.snmp.security.engineid alert_snmp_security_engineid false
SNMP Security Level Level of security to use for SNMP v3 protocol. Currently only 'no authentication' and 'authentication with no privacy' is supported. Select 'SNMPv2' to use 'Community String' based SNMPv2 authentication. alert.snmp.security.level SNMPv2 alert_snmp_security_level true
SNMP NMS Hostname Hostname of the SNMP NMS (network management software). It can be a DNS name or IP address of the host listening for SNMP traps and notifications. For reference, here is Cloudera Manager SNMP Mib. alert.snmp.server.hostname alert_snmp_server_hostname false
SNMP Server Port Port number on which SNMP server is listening. alert.snmp.server.port 162 alert_snmp_server_port true
SNMP Timeout Time to wait before an SNMP trap is resent or timed out. alert.snmp.timeout 5 second(s) alert_snmp_timeout true
SNMP Security UserName Name of a user to use for SNMP security. alert.snmp.username alert_snmp_username false

Event Server Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Java Configuration Options for Event Server These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. eventserver_java_opts false
Maximum Number of Events Returned by Any Query The maximum number of events that any query can return. Note: A high value can increase the amount of memory required by Event Server, as well as affect query response times. eventcatcher.max.query.events 10000 eventserver_max_query_events true
Maximum Write Queue Length The maximum number of events that can be queued for write before further requests are rejected eventcatcher.ingest.pipeline.max 10000 eventserver_max_write_queue_size true
Number of Core Event Writer Threads The number of threads that Event Server will use to write events to its store concurrently eventcatcher.num.ingest.threads 2 eventserver_num_pipeline_threads true
Event Server Query Timeout The amount of time, in milliseconds, that Cloudera Manager and the Alert Publisher will wait for the Event Server to respond to a query. eventserver.query.timeout 60000 eventserver_query_timeout false
Event Server Advanced Configuration Snippet (Safety Valve) for eventserver.conf For advanced use only, a string to be inserted into eventserver.conf for this role only. eventserver_safety_valve false
Event Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true

Logs

Display Name Description Related Name Default Value API Name Required
Event Server Logging Threshold The minimum log level for Event Server logs INFO log_threshold false
Event Server Maximum Log File Backups The maximum number of rolled log files to keep for Event Server logs. Typically used by log4j. 10 max_log_backup_index false
Event Server Max Log Size The maximum size, in megabytes, per log file for Event Server logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Event Store Capacity Monitoring Thresholds The health test thresholds on the number of events in the event store. Specified as a percentage of the maximum number of events in Event Server store. Warning: 115.0 %, Critical: 130.0 % eventserver_capacity_thresholds false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % eventserver_fd_thresholds false
Garbage Collection Duration Thresholds The health test thresholds for the weighted average time spent in Java garbage collection. Specified as a percentage of elapsed wall clock time. Warning: 30.0, Critical: 60.0 eventserver_gc_duration_thresholds false
Garbage Collection Duration Monitoring Period The period to review when computing the moving average of garbage collection time. 5 minute(s) eventserver_gc_duration_window false
Event Server Host Health Test When computing the overall Event Server health, consider the host's health. true eventserver_host_health_enabled false
Index Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the index directory. Warning: 10 GiB, Critical: 5 GiB eventserver_index_directory_free_space_absolute_thresholds false
Index Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the index directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if an Index Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never eventserver_index_directory_free_space_percentage_thresholds false
Event Server Process Health Test Enables the health test that the Event Server's process state is consistent with the role configuration true eventserver_scm_health_enabled false
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. true eventserver_web_metric_collection_enabled false
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. Warning: 10 second(s), Critical: Never eventserver_web_metric_collection_thresholds false
Event Server Write Pipeline Monitoring Thresholds The health test thresholds for monitoring the Event Server write pipeline. This specifies the number of dropped messages that will be tolerated over the monitoring time period. Warning: Never, Critical: Any eventserver_write_pipeline_thresholds false
Event Server Write Pipeline Monitoring Time Period The time period over which the Event Server write pipeline will be monitored for dropped messages. 5 minute(s) eventserver_write_pipeline_window false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Alert On Transitions Out of Alerting Health If set, the health events for transitions out of an alertable health level will also be considered an alert. For example, consider an entity that is configured to alert when it has bad health. If that entity's health becomes bad, an alert will be generated. If this setting is enabled, an alert will also be generated when it returns to good health. If this setting is disabled, then no alert will be generated when it returns to good health. Note that an entity must have enable_alerts set to true for health alerts to be generated for it. And make sure to reference the per-entity setting to turn on health alerts. false eventserver_alert_on_transition_out_of_alerting_health_enabled false
Health Alert Threshold Threshold at which a health event will be considered an alert. Note that an entity must have enable_alerts set to true for health alerts to be generated for it. And make sure to reference the per-entity setting to turn on health alerts. Bad eventserver_health_events_alert_threshold false
Event Server Index Directory Location of the Lucene index for Event Server eventcatcher.server.lucenedir /var/lib/cloudera-scm-eventserver eventserver_index_dir false
Maximum Number of Events in the Event Server Store The maximum size of the Event Server store, in events. Once this size is exceeded, events will be deleted started with the oldest first until the size of the store returns below this threshold eventcatcher.event.capacity 5000000 eventserver_max_index_size true
Event Server Log Directory Directory where Event Server will place its log files. /var/log/cloudera-scm-eventserver mgmt_log_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Event Server Debug Port Port for the Event Server's Debug page. Set to -1 to disable debug server. eventcatcher.server.debug.port 8084 eventserver_debug_port false
Event Query Port Port on which the Event Server listens for queries for events. eventcatcher.server.httpport 7185 eventserver_http_port false
Event Publish Port Port on which the Event Server listens for the publication of events. eventcatcher.server.port 7184 eventserver_listen_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of EventServer in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 1 GiB event_server_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Host Monitor Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Host Monitor Legacy Database Hostname Hostname of the Host Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Host Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. localhost firehose_database_host false
Host Monitor Legacy Database Name The name of the Host Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Host Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. firehose_database_name false
Host Monitor Legacy Database Password Password for logging into the Host Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Host Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. db.hibernate.connection.password firehose_database_password false
Host Monitor Legacy Database Type Type of the Host Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Host Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. mysql firehose_database_type false
Host Monitor Legacy Database Username Username for logging into the Host Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Host Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. db.hibernate.connection.username firehose_database_user false
Java Configuration Options for Host Monitor These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. firehose_java_opts false
Host Monitor Advanced Configuration Snippet (Safety Valve) for cmon.conf For advanced use only, a string to be inserted into cmon.conf for this role only. firehose_safety_valve false
Host Monitor Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true
Event Publication Maximum Queue Size The maximum size of the queue in which events published from this role will be buffered. If this queue becomes full (for example, due to an outage), subsequent events will be dropped. health.event.publish.queue.max 20000 svcmon_event_publication_queue_size_max true
Event Publication Retry Period If an event cannot be delivered immediately by this role, this value controls how long to wait before Event Publisher retries delivery. health.event.publish.retry.ms 5000 svcmon_event_publication_retry_period true

Logs

Display Name Description Related Name Default Value API Name Required
Host Monitor Logging Threshold The minimum log level for Host Monitor logs INFO log_threshold false
Host Monitor Maximum Log File Backups The maximum number of rolled log files to keep for Host Monitor logs. Typically used by log4j. 10 max_log_backup_index false
Host Monitor Max Log Size The maximum size, in megabytes, per log file for Host Monitor logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Storage Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the storage directory. Warning: 10 GiB, Critical: 5 GiB firehose_storage_directory_free_space_absolute_thresholds false
Storage Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the storage directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Storage Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never firehose_storage_directory_free_space_percentage_thresholds false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % hostmonitor_fd_thresholds false
Host Monitor Host Health Test When computing the overall Host Monitor health, consider the host's health. true hostmonitor_host_health_enabled false
Host Monitor Host Pipeline Monitoring Thresholds The health test thresholds for monitoring the Host Monitor host pipeline. This specifies the number of dropped messages that will be tolerated over the monitoring time period. Warning: Never, Critical: Any hostmonitor_host_pipeline_thresholds false
Host Monitor Host Pipeline Monitoring Time Period The time period over which the Host Monitor host pipeline will be monitored for dropped messages. 5 minute(s) hostmonitor_host_pipeline_window false
Pause Duration Thresholds The health test thresholds for the weighted average extra time the pause monitor spent paused. Specified as a percentage of elapsed wall clock time. Warning: 30.0, Critical: 60.0 hostmonitor_pause_duration_thresholds false
Pause Duration Monitoring Period The period to review when computing the moving average of extra time the pause monitor spent paused. 5 minute(s) hostmonitor_pause_duration_window false
Host Monitor Process Health Test Enables the health test that the Host Monitor's process state is consistent with the role configuration true hostmonitor_scm_health_enabled false
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. true hostmonitor_web_metric_collection_enabled false
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. Warning: 10 second(s), Critical: Never hostmonitor_web_metric_collection_thresholds false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Instead, use .*, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Use .* instead, alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Host Monitor Storage Directory The directory where Host Monitor data is stored. The Host Monitor stores metric time series and health information. firehose.storage.base.directory /var/lib/cloudera-host-monitor firehose_storage_dir true
Time-Series Storage The approximate amount of disk space dedicated to storing time series and health data. Once the store has reached its maximum size older data will be deleted to make room for newer data. The disk usage is approximate because we only begin deleting data once we've reached the limit. Note that Cloudera Manager stores time-series data at a number of different data granularities, and these granularities have different effective retention periods. Specifically, Cloudera Manager stores metric data as both raw data points and ten-minutely, hourly, six-hourly, daily, and weekly summary data points. Raw data consumes the bulk of the allocated storage space, weekly summaries the least. As such, raw data is retained for the shortest amount of time, while weekly summary points are unlikely to ever be deleted. See the "Disk Usage" tab on the Host Monitor page for more information on how space is consumed within the Host Monitor. This tab also shows information about the amount of data retained and time window covered by each data granularity. firehose_time_series_storage_bytes 10 GiB firehose_time_series_storage_bytes false
Health Event Startup Policy This setting controls whether health events are emitted when this monitoring role is started. If set to "none", then no health events are emitted. If set to "bad" then health events are emitted for subjects with bad or concerning health. If set to "all" then health events are emitted for all subjects for all health values. The default is "bad". health.event.publish.startup.policy bad health_event_publish_startup_policy false
Host Monitor Log Directory Location of log files for Host Monitor /var/log/cloudera-scm-firehose mgmt_log_dir false
Event Publication Log Quiet Time Period To avoid producing excessive amounts of log output, the Event Publisher component of this role is limited to emitting one message per time period. This value controls the size of that time period. health.event.publish.log.suppress.window.ms 1 minute(s) svcmon_event_publication_log_suppress_window true

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Host Monitor Debug Port Port for Host Monitor's Debug page. Set to -1 to disable the debug server. debug.servlet.port 8091 firehose_debug_port false
Host Monitor Listen Port Port where Host Monitor is listening for agent messages. firehose.server.port 9995 firehose_listen_port false
Host Monitor Nozzle Port Port where Host Monitor's query API is exposed. nozzle.server.port 9994 firehose_nozzle_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Host Monitor in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 1 GiB firehose_heapsize false
Maximum Non-Java Memory of Host Monitor The amount of memory the Host Monitor can use off of the Java heap. firehose_non_java_memory_bytes 2 GiB firehose_non_java_memory_bytes false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Navigator Audit Server Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Navigator Audit Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Java Configuration Options for Navigator Audit These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. navigator_java_opts false
Navigator Audit Server Advanced Configuration Snippet (Safety Valve) for cloudera-navigator.properties For advanced use only, a string to be inserted into cloudera-navigator.properties for this role only. navigator_server_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true

Database

Display Name Description Related Name Default Value API Name Required
Navigator Audit Server Database Hostname Name of the host where Navigator Audit Server's database is running. It is highly recommended that this database is on the same host as Navigator Audit Server. If the database is not running on its default port, specify the port number using this syntax: 'host:port' navigator.db.host localhost navigator_database_host false
Navigator Audit Server Database Name The name of the Navigator Audit Server's database. navigator.db.name nav navigator_database_name true
Navigator Audit Server Database Password The password for Navigator Audit Server's database user account. navigator.db.password navigator_database_password false
Navigator Audit Server Database Type Type of database used for Navigator Audit Server. navigator.db.type mysql navigator_database_type false
Navigator Audit Server Database Username The username to use to log into Navigator Audit Server's database. navigator.db.user nav navigator_database_user true

Logs

Display Name Description Related Name Default Value API Name Required
Navigator Audit Server Logging Threshold The minimum log level for Navigator Audit Server logs INFO log_threshold false
Navigator Audit Server Maximum Log File Backups The maximum number of rolled log files to keep for Navigator Audit Server logs. Typically used by log4j. 10 max_log_backup_index false
Navigator Audit Server Max Log Size The maximum size, in megabytes, per log file for Navigator Audit Server logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Instead, use .*, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Use .* instead, alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % navigator_fd_thresholds false
Garbage Collection Duration Thresholds The health test thresholds for the weighted average time spent in Java garbage collection. Specified as a percentage of elapsed wall clock time. Warning: 30.0, Critical: 60.0 navigator_gc_duration_thresholds false
Garbage Collection Duration Monitoring Period The period to review when computing the moving average of garbage collection time. 5 minute(s) navigator_gc_duration_window false
Navigator Audit Server Host Health Test When computing the overall Navigator Audit Server health, consider the host's health. true navigator_host_health_enabled false
Navigator Audit Server Process Health Test Enables the health test that the Navigator Audit Server's process state is consistent with the role configuration true navigator_scm_health_enabled false
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. true navigator_web_metric_collection_enabled false
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. Warning: 10 second(s), Critical: Never navigator_web_metric_collection_thresholds false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Navigator Audit Server Data Expiration Period The number of hours of past audit events to keep in the Navigator Audit Server database. This will affect the size of the database. navigator.db.hours.retained 90 day(s) hours_retained false
Navigator Audit Server Log Directory Directory where Navigator Audit Server will place its log files. /var/log/cloudera-scm-navigator mgmt_log_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Navigator Audit Server Debug Port The port where Navigator Audit Server starts a debug web server. Set to -1 to disable debug server. navigator.server.debug.port 8089 navigator_debug_port false
Navigator Audit Server Port The port where Navigator Audit Server listens for requests navigator.server.port 7186 navigator_server_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Auditing Server in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 1 GiB navigator_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Navigator Metadata Server Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Navigator Metadata Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Navigator Metadata Server Install Dir The directory where Navigator Metadata Server is installed. This allows overriding the version packaged with the Cloudera Manager Server. nav_install_dir false
Java Configuration Options for Navigator Metadata Server These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. -XX:MaxPermSize=128m navigator_java_opts false
Navigator Metadata Server Advanced Configuration Snippet (Safety Valve) for cloudera-navigator.properties For advanced use only, a string to be inserted into cloudera-navigator.properties for this role only. navigator_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true

Logs

Display Name Description Related Name Default Value API Name Required
Navigator Metadata Server Logging Threshold The minimum log level for Navigator Metadata Server logs INFO log_threshold false
Navigator Metadata Server Maximum Log File Backups The maximum number of rolled log files to keep for Navigator Metadata Server logs. Typically used by log4j. 10 max_log_backup_index false
Navigator Metadata Server Max Log Size The maximum size, in megabytes, per log file for Navigator Metadata Server logs. Typically used by log4j. 200 MiB max_log_size false
Navigator Metadata Server Log Directory Directory where Navigator Metadata Server will place its log files. /var/log/cloudera-scm-navigator mgmt_log_dir false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % navigatormetaserver_fd_thresholds false
Navigator Metadata Server Host Health Test When computing the overall Navigator Metadata Server health, consider the host's health. true navigatormetaserver_host_health_enabled false
Navigator Metadata Server Process Health Test Enables the health test that the Navigator Metadata Server's process state is consistent with the role configuration true navigatormetaserver_scm_health_enabled false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Navigator Metadata Server Storage Dir The directory where Navigator Metadata Server data is stored. Note that changing this location does not migrate existing data. nav.data.dir /var/lib/cloudera-scm-navigator data_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Navigator Metadata Server Port The port where Navigator Metadata Server listens for requests nav.http.port 7187 navigator_server_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Navigator Metadata Server in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 2 GiB navigator_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Reports Manager Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Java Configuration Options for Reports Manager These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. headlamp_java_opts false
Publish HBase Space Usage When set, publishes HBase space usage metrics to support HBase usage reporting. This feature is only supported for CDH5+ HBase deployments. publish.hbase.space true headlamp_publish_hbase_metrics false
Reports Manager Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true
Reports Manager Advanced Configuration Snippet (Safety Valve) for headlamp.conf For advanced use only, a string to be inserted into headlamp.conf for this role only. reportsmanager_safety_valve false

Database

Display Name Description Related Name Default Value API Name Required
Reports Manager Database Hostname Name of the host where Reports Manager's database is running. It is highly recommended that this database is on the same host as Reports Manager. If the database is not running on its default port, specify the port number using this syntax: 'host:port' com.cloudera.headlamp.db.host localhost headlamp_database_host false
Reports Manager Database Name The name of the Reports Manager's database. com.cloudera.headlamp.db.name headlamp_database_name true
Reports Manager Database Password The password for Reports Manager's database user account. com.cloudera.headlamp.db.password headlamp_database_password false
Reports Manager Database Type Type of database used for Reports Manager. com.cloudera.headlamp.db.type mysql headlamp_database_type false
Reports Manager Database Username The username to use to log into Reports Manager's database. com.cloudera.headlamp.db.user headlamp_database_user true

Logs

Display Name Description Related Name Default Value API Name Required
Reports Manager Logging Threshold The minimum log level for Reports Manager logs INFO log_threshold false
Reports Manager Maximum Log File Backups The maximum number of rolled log files to keep for Reports Manager logs. Typically used by log4j. 10 max_log_backup_index false
Reports Manager Max Log Size The maximum size, in megabytes, per log file for Reports Manager logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Instead, use .*, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Use .* instead, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % reportsmanager_fd_thresholds false
Reports Manager Host Health Test When computing the overall Reports Manager health, consider the host's health. true reportsmanager_host_health_enabled false
Reports Manager Process Health Test Enables the health test that the Reports Manager's process state is consistent with the role configuration true reportsmanager_scm_health_enabled false
Scratch Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the scratch directory. Warning: 10 GiB, Critical: 5 GiB reportsmanager_scratch_directory_free_space_absolute_thresholds false
Scratch Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the scratch directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Scratch Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never reportsmanager_scratch_directory_free_space_percentage_thresholds false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Reports Manager Working Directory Directory for Reports Manager to use for its working files scratch.dir /var/lib/cloudera-scm-headlamp headlamp_scratch_dir false
Reports Manager Update Frequency Frequency in which Reports Manager refreshes its view of HDFS. update.frequency.seconds 1 hour(s) headlamp_update_frequency_seconds false
Reports Manager Log Directory Directory where Reports Manager will place its log files. /var/log/cloudera-scm-headlamp mgmt_log_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Reports Manager Debug Port The port where Reports Manager starts a debug web server. Set to -1 to disable debug server. debug.server.port 8083 headlamp_debug_port false
Reports Manager Server Port The port where Reports Manager listens for requests server.port 5678 headlamp_server_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Reports Manager in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 1 GiB headlamp_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Service Monitor Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Service Monitor Legacy Database Hostname Hostname of the Service Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Service Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. localhost firehose_database_host false
Service Monitor Legacy Database Name The name of the Service Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Service Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. firehose_database_name false
Service Monitor Legacy Database Password Password for logging into the Service Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Service Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. db.hibernate.connection.password firehose_database_password false
Service Monitor Legacy Database Type Type of the Service Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Service Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. mysql firehose_database_type false
Service Monitor Legacy Database Username Username for logging into the Service Monitor legacy database. The legacy database stores data generated before upgrading to Cloudera Manager 5.0. If this setting is set the Service Monitor will attempt to migrate data from the legacy database to its current datastore. Once that process has been completed this configuration can be cleared. db.hibernate.connection.username firehose_database_user false
Java Configuration Options for Service Monitor These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. firehose_java_opts false
Service Monitor Advanced Configuration Snippet (Safety Valve) for cmon.conf For advanced use only, a string to be inserted into cmon.conf for this role only. firehose_safety_valve false
Service Monitor Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. true process_auto_restart true
Event Publication Maximum Queue Size The maximum size of the queue in which events published from this role will be buffered. If this queue becomes full (for example, due to an outage), subsequent events will be dropped. health.event.publish.queue.max 20000 svcmon_event_publication_queue_size_max true
Event Publication Retry Period If an event cannot be delivered immediately by this role, this value controls how long to wait before Event Publisher retries delivery. health.event.publish.retry.ms 5000 svcmon_event_publication_retry_period true

Logs

Display Name Description Related Name Default Value API Name Required
Service Monitor Logging Threshold The minimum log level for Service Monitor logs INFO log_threshold false
Service Monitor Maximum Log File Backups The maximum number of rolled log files to keep for Service Monitor logs. Typically used by log4j. 10 max_log_backup_index false
Service Monitor Max Log Size The maximum size, in megabytes, per log file for Service Monitor logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Storage Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the storage directory. Warning: 10 GiB, Critical: 5 GiB firehose_storage_directory_free_space_absolute_thresholds false
Storage Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains the storage directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Storage Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never firehose_storage_directory_free_space_percentage_thresholds false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Rules to Extract Events from Log Files This file contains the rules which govern how log messages are turned into events by the custom log4j appender that this role loads. It is in JSON format, and is composed of a list of rules. Every log message is evaluated against each of these rules in turn to decide whether or not to send an event for that message.Each rule has some or all of the following fields:
  • alert
    - whether or not events generated from this rule should be promoted to alerts. A value of "true" will cause alerts to be generated. If not specified, the default is "false".
  • rate
    (mandatory) - the maximum number of log messages matching this rule that may be sent as events every minute. If more than rate matching log messages are received in a single minute, the extra messages are ignored. If rate is less than 0, the number of messages per minute is unlimited.
  • periodminutes
    - the number of minutes during which the publisher will only publish rate events or fewer. If not specified, the default is one minute
  • threshold
    - apply this rule only to messages with this log4j severity level or above. An example is "WARN" for warning level messages or higher.
  • content
    - match only those messages whose contents match this regular expression.
  • exceptiontype
    - match only those messages which are part of an exception message. The exception type must match this regular expression.
Example:
{"alert": false, "rate": 10, "exceptiontype": "java.lang.StringIndexOutOfBoundsException"}
This rule will send events to Cloudera Manager for every
StringIndexOutOfBoundsException
, up to a maximum of 10 every minute.
version: 0, rules: [ alert: false, rate: 1, periodminutes: 1, threshold:FATAL, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Instead, use .*, alert: false, rate: 0, threshold:WARN, content: .* is deprecated. Use .* instead, alert: false, rate: 1, periodminutes: 2, exceptiontype: .*, alert: false, rate: 1, periodminutes: 1, threshold:WARN ] log_event_whitelist false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] role_triggers true
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % servicemonitor_fd_thresholds false
Service Monitor Host Health Test When computing the overall Service Monitor health, consider the host's health. true servicemonitor_host_health_enabled false
Pause Duration Thresholds The health test thresholds for the weighted average extra time the pause monitor spent paused. Specified as a percentage of elapsed wall clock time. Warning: 30.0, Critical: 60.0 servicemonitor_pause_duration_thresholds false
Pause Duration Monitoring Period The period to review when computing the moving average of extra time the pause monitor spent paused. 5 minute(s) servicemonitor_pause_duration_window false
Service Monitor Role Pipeline Monitoring Thresholds The health test thresholds for monitoring the Service Monitor role pipeline. This specifies the number of dropped messages that will be tolerated over the monitoring time period. Warning: Never, Critical: Any servicemonitor_role_pipeline_thresholds false
Service Monitor Role Pipeline Monitoring Time Period The time period over which the Service Monitor role pipeline will be monitored for dropped messages. 5 minute(s) servicemonitor_role_pipeline_window false
Service Monitor Process Health Test Enables the health test that the Service Monitor's process state is consistent with the role configuration true servicemonitor_scm_health_enabled false
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. true servicemonitor_web_metric_collection_enabled false
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. Warning: 10 second(s), Critical: Never servicemonitor_web_metric_collection_thresholds false
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false
YARN MapReduce Counter Descriptions This JSON document contains metadata that is used by the Service Monitor's YARN application monitoring feature for YARN-based MapReduce counter handling.Each counter description has the following fields:
  • name (mandatory) - the name of the counter, for example, org.apache.hadoop.mapreduce.filesystemcounter.file_bytes_read.
  • units (mandatory) - the units of the counter.
  • attributeName (optional) - the attribute name to use for the counter within Cloudera Manager, this name will be used to identify the counter within the YARN Application Monitoring feature and in the Cloudera Manager API. If not specified the portion of the counter name after the last period will be used.
  • displayName (optional) - a display name for the counter. If not specified the full counter name will be used.
  • description (optional) - a description of the counter. If not specified the full counter name will be used.
[ name: org.apache.hadoop.mapreduce.jobcounter.num_failed_maps, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.num_failed_reduces, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.total_launched_maps, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.total_launched_reduces, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.other_local_maps, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.data_local_maps, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.rack_local_maps, units: tasks , name: org.apache.hadoop.mapreduce.jobcounter.slot_millis_maps, units: ms , name: org.apache.hadoop.mapreduce.jobcounter.slot_millis_reduces, units: ms , name: org.apache.hadoop.mapreduce.jobcounter.fallow_slot_millis_maps, units: ms , name: org.apache.hadoop.mapreduce.jobcounter.fallow_slot_millis_reduces, units: ms , name: org.apache.hadoop.mapreduce.jobcounter.mb_millis_maps, units: mb millis , name: org.apache.hadoop.mapreduce.jobcounter.mb_millis_reduces, units: mb millis , name: org.apache.hadoop.mapreduce.jobcounter.vcores_millis_maps, units: vcore millis , name: org.apache.hadoop.mapreduce.jobcounter.vcores_millis_reduces, units: vcore millis , name: org.apache.hadoop.mapreduce.filesystemcounter.file_bytes_read, units: bytes , name: org.apache.hadoop.mapreduce.filesystemcounter.file_bytes_written, units: bytes , name: org.apache.hadoop.mapreduce.filesystemcounter.file_read_ops, units: operations , name: org.apache.hadoop.mapreduce.filesystemcounter.file_large_read_ops, units: operations , name: org.apache.hadoop.mapreduce.filesystemcounter.file_write_ops, units: operations , name: org.apache.hadoop.mapreduce.filesystemcounter.hdfs_bytes_read, units: bytes , name: org.apache.hadoop.mapreduce.filesystemcounter.hdfs_bytes_written, units: bytes , name: org.apache.hadoop.mapreduce.filesystemcounter.hdfs_read_ops, units: operations , name: org.apache.hadoop.mapreduce.filesystemcounter.hdfs_large_read_ops, units: operations , name: org.apache.hadoop.mapreduce.filesystemcounter.hdfs_write_ops, units: operations , name: org.apache.hadoop.mapreduce.taskcounter.map_input_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.map_output_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.map_output_bytes, units: bytes , name: org.apache.hadoop.mapreduce.taskcounter.map_output_materialized_bytes, units: bytes , name: org.apache.hadoop.mapreduce.taskcounter.split_raw_bytes, units: bytes , name: org.apache.hadoop.mapreduce.taskcounter.combine_input_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.combine_output_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.reduce_input_groups, units: groups , name: org.apache.hadoop.mapreduce.taskcounter.reduce_shuffle_bytes, units: bytes , name: org.apache.hadoop.mapreduce.taskcounter.reduce_input_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.reduce_output_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.spilled_records, units: records , name: org.apache.hadoop.mapreduce.taskcounter.shuffled_maps, units: tasks , name: org.apache.hadoop.mapreduce.taskcounter.failed_shuffle, units: failures , name: org.apache.hadoop.mapreduce.taskcounter.merged_map_outputs, units: outputs , name: org.apache.hadoop.mapreduce.taskcounter.gc_time_millis, units: ms , name: org.apache.hadoop.mapreduce.taskcounter.cpu_milliseconds, units: ms , name: org.apache.hadoop.mapreduce.taskcounter.physical_memory_bytes, units: bytes , name: org.apache.hadoop.mapreduce.taskcounter.virtual_memory_bytes, units: bytes , name: org.apache.hadoop.mapreduce.taskcounter.committed_heap_bytes, units: bytes , attributeName: shuffle_errors_bad_id, name: shuffle_errors.bad_id, units: errors , attributeName: shuffle_errors_connection, name: shuffle_errors.connection, units: errors , attributeName: shuffle_errors_io, name: shuffle_errors.io_error, units: errors , attributeName: shuffle_errors_wrong_length, name: shuffle_errors.wrong_length, units: errors , attributeName: shuffle_errors_wrong_map, name: shuffle_errors.wrong_map, units: errors , attributeName: shuffle_errors_wrong_reduce, name: shuffle_errors.wrong_reduce, units: errors , name: org.apache.hadoop.mapreduce.lib.input.fileinputformatcounter.bytes_read, units: bytes , name: org.apache.hadoop.mapreduce.lib.output.fileoutputformatcounter.bytes_written, units: bytes ] yarn_application_mapreduce_counters false

Other

Display Name Description Related Name Default Value API Name Required
Impala Storage The approximate amount of disk space dedicated to storing Impala query data. Once the store has reached its maximum size older data will be deleted to make room for newer queries. The disk usage is approximate because we only begin deleting data once we've reached the limit. firehose_impala_storage_bytes 1 GiB firehose_impala_storage_bytes false
Service Monitor Storage Directory The directory where Service Monitor data is stored. The Service Monitor stores metric time series and health information, as well as Impala query and YARN application metadata if Impala and/or YARN are configured. firehose.storage.base.directory /var/lib/cloudera-service-monitor firehose_storage_dir true
Time-Series Storage The approximate amount of disk space dedicated to storing time series and health data. Once the store has reached its maximum size older data will be deleted to make room for newer data. The disk usage is approximate because we only begin deleting data once we've reached the limit. Note that Cloudera Manager stores time-series data at a number of different data granularities, and these granularities have different effective retention periods. Specifically, Cloudera Manager stores metric data as both raw data points and ten-minutely, hourly, six-hourly, daily, and weekly summary data points. Raw data consumes the bulk of the allocated storage space, weekly summaries the least. As such, raw data is retained for the shortest amount of time, while weekly summary points are unlikely to ever be deleted. See the "Disk Usage" tab on the Service Monitor page for more information on how space is consumed within the Service Monitor. This tab also shows information about the amount of data retained and time window covered by each data granularity. firehose_time_series_storage_bytes 10 GiB firehose_time_series_storage_bytes false
YARN Storage The approximate amount of disk space dedicated to storing YARN application data. Once the store has reached its maximum size older data will be deleted to make room for newer applications. The disk usage is approximate because we only begin deleting data once we've reached the limit. firehose_yarn_storage_bytes 1 GiB firehose_yarn_storage_bytes false
Health Event Startup Policy This setting controls whether health events are emitted when this monitoring role is started. If set to "none", then no health events are emitted. If set to "bad" then health events are emitted for subjects with bad or concerning health. If set to "all" then health events are emitted for all subjects for all health values. The default is "bad". health.event.publish.startup.policy bad health_event_publish_startup_policy false
Service Monitor Log Directory Location of log files for Service Monitor /var/log/cloudera-scm-firehose mgmt_log_dir false
Event Publication Log Quiet Time Period To avoid producing excessive amounts of log output, the Event Publisher component of this role is limited to emitting one message per time period. This value controls the size of that time period. health.event.publish.log.suppress.window.ms 1 minute(s) svcmon_event_publication_log_suppress_window true

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Service Monitor Debug Port Port for Service Monitor's Debug page. Set to -1 to disable the debug server. debug.servlet.port 8086 firehose_debug_port false
Service Monitor Listen Port Port where Service Monitor is listening for agent messages. firehose.server.port 9997 firehose_listen_port false
Service Monitor Nozzle Port Port where Service Monitor's query API is exposed. nozzle.server.port 9996 firehose_nozzle_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Service Monitor in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 1 GiB firehose_heapsize false
Maximum Non-Java Memory of Service Monitor The amount of memory the Service Monitor can use off of the Java heap. firehose_non_java_memory_bytes 2 GiB firehose_non_java_memory_bytes false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Service-Wide

Advanced

Display Name Description Related Name Default Value API Name Required
Cloudera Management Service Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of all roles in this service except client configuration. mgmt_service_env_safety_valve false
Cloudera Management Service Advanced Configuration Snippet (Safety Valve) for ssl-client.xml For advanced use only, a string to be inserted into ssl-client.xml. This setting currently applies to the Reports Manager only. mgmt_ssl_client_safety_valve false
System Group The group that this service's processes should run as. cloudera-scm process_groupname true
System User The user that this service's processes should run as. cloudera-scm process_username true

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Log Event Capture When set, each role will identify important log events and forward them to Cloudera Manager. true catch_events false
Enable Service Level Health Alerts When set, Cloudera Manager will send alerts when the health of this service reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold false enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Event Retry Frequency The frequency in which the log4j event publication appender will retry sending undelivered log events to the Event server, in seconds 30 log_event_retry_frequency false
Activity Monitor Role Health Test When computing the overall MGMT health, consider Activity Monitor's health true mgmt_activitymonitor_health_enabled false
Alert Publisher Role Health Test When computing the overall MGMT health, consider Alert Publisher's health true mgmt_alertpublisher_health_enabled false
Embedded Database Free Space Monitoring Thresholds The health test thresholds for monitoring the free space on the volume for the embedded PostgreSQL database optionally running on the Cloudera Manager Server. If the embedded database is not in use, this has no effect. Warning: 2 GiB, Critical: 1 GiB mgmt_embedded_database_free_space_absolute_thresholds false
Event Server Role Health Test When computing the overall MGMT health, consider Event Server's health true mgmt_eventserver_health_enabled false
Host Monitor Role Health Test When computing the overall MGMT health, consider Host Monitor's health true mgmt_hostmonitor_health_enabled false
Navigator Audit Server Role Health Test When computing the overall MGMT health, consider Navigator Audit Server's health true mgmt_navigator_health_enabled false
Navigator Metadata Server Role Health Test When computing the overall MGMT health, consider Navigator Metadata Server's health true mgmt_navigatormetaserver_health_enabled false
Reports Manager Role Health Test When computing the overall MGMT health, consider Reports Manager's health true mgmt_reportsmanager_health_enabled false
Service Monitor Role Health Test When computing the overall MGMT health, consider Service Monitor's health true mgmt_servicemonitor_health_enabled false
Service Triggers The configured triggers for this service. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific service.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger that fires if there are more than 10 DataNodes with more than 500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleType = DataNode and last(fd_open) > 500) DO health:bad",
  "streamThreshold": 10, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.
[] service_triggers true
Service Monitor Derived Configs Advanced Configuration Snippet (Safety Valve) For advanced use only, a list of derived configuration properties that will be used by the Service Monitor instead of the default ones. smon_derived_configs_safety_valve false

Other

Display Name Description Related Name Default Value API Name Required
Kerberos Ticket Validity Period The Kerberos ticket validity period. The Firehose service logs in again within this time period to ensure it has a valid Kerberos ticket. tgt.login.validity.period 1 hour(s) tgt_login_validity_period false

Security

Display Name Description Related Name Default Value API Name Required
SSL Client Truststore File Location Path to the client truststore file used in HTTPS communication. This truststore contains certificates of trusted servers, or of Certificate Authorities trusted to identify servers. If set, this will be used to verify certificates in HTTPS communication with CDH services and the Cloudera Manager Server. If not set, the default java truststore will be used to verify certificates. The contents of this truststore can be modified without restarting the Cloudera Management Service roles. By default, changes to its contents are picked up within ten seconds. ssl.client.truststore.location ssl_client_truststore_location false
SSL Client Truststore File Password Password for the client truststore file. ssl.client.truststore.password ssl_client_truststore_password false