This is the documentation for Cloudera Manager 5.1.0.
Documentation for other versions is available at Cloudera Documentation.

Activity Monitor Health Tests

Activity Monitor Activity Monitor Pipeline

This Activity Monitor health test checks that no messages are being dropped by the activity monitor stage of the Activity Monitor pipeline. A failure of this health test indicates a problem with the Activity Monitor. This may indicate a configuration problem or a bug in the Activity Monitor. This test can be configured using the Activity Monitor Activity Monitor Pipeline Monitoring Time Period monitoring setting.

Short Name: Activity Monitor Pipeline

Property Name Description Template Name Default Value Unit
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. activitymonitor_activity_monitor_pipeline_thresholds critical:any, warning:never no unit
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. activitymonitor_activity_monitor_pipeline_window 5 MINUTES

Activity Monitor Activity Tree Pipeline

This Activity Monitor health test checks that no messages are being dropped by the activity tree stage of the Activity Monitor pipeline. A failure of this health test indicates a problem with the Activity Monitor. This may indicate a configuration problem or a bug in the Activity Monitor. This test can be configured using the Activity Monitor Activity Tree Pipeline Monitoring Time Period monitoring setting.

Short Name: Activity Tree Pipeline

Property Name Description Template Name Default Value Unit
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. activitymonitor_activity_tree_pipeline_thresholds critical:any, warning:never no unit
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. activitymonitor_activity_tree_pipeline_window 5 MINUTES

Activity Monitor File Descriptors

This Activity Monitor health test checks that the number of file descriptors used does not rise above some percentage of the Activity Monitor file descriptor limit. A failure of this health test may indicate a bug in either Hadoop or Cloudera Manager. Contact Cloudera support. This test can be configured using the File Descriptor Monitoring Thresholds Activity Monitor monitoring setting.

Short Name: File Descriptors

Property Name Description Template Name Default Value Unit
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. activitymonitor_fd_thresholds critical:70.0, warning:50.0 PERCENT

Activity Monitor Host Health

This Activity Monitor health test factors in the health of the host upon which the Activity Monitor is running. A failure of this test means that the host running the Activity Monitor is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Activity Monitor Host Health Test Activity Monitor monitoring setting.

Short Name: Host Health

Property Name Description Template Name Default Value Unit
Activity Monitor Host Health Test When computing the overall Activity Monitor health, consider the host's health. activitymonitor_host_health_enabled true no unit

Activity Monitor Log Directory Free Space

This Activity Monitor health test checks that the filesystem containing the log directory of this Activity Monitor has sufficient free space. This test can be configured using the Log Directory Free Space Monitoring Absolute Thresholds and Log Directory Free Space Monitoring Percentage Thresholds Activity Monitor monitoring settings.

Short Name: Log Directory Free Space

Property Name Description Template Name Default Value Unit
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. log_directory_free_space_absolute_thresholds critical:5.36870912E9, warning:1.073741824E10 BYTES
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. log_directory_free_space_percentage_thresholds critical:never, warning:never PERCENT

Activity Monitor Pause Duration

This Activity Monitor health test checks that the Activity Monitor threads are not experiencing long scheduling pauses. The test uses a pause monitoring thread in the Activity Monitor that tracks scheduling delay by noting if it is run on its requested schedule. If the thread is not run on its requested schedule the delay is noted and considered pause time. The health test checks that no more than some percentage of recent time is spent paused. A failure of this health test may indicate that the Activity Monitor is not getting enough CPU resources, or that it is spending too much time doing garbage collection. Inspect the Activity Monitor logs for any pause monitor output and check garbage collection metrics exposed by the Activity Monitor. This test can be configured using the Pause Duration Thresholds and Pause Duration Monitoring Period Activity Monitor monitoring settings.

Short Name: Pause Duration

Property Name Description Template Name Default Value Unit
Pause Duration Monitoring Period The period to review when computing the moving average of extra time the pause monitor spent paused. activitymonitor_pause_duration_window 5 MINUTES
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. activitymonitor_pause_duration_thresholds critical:60.0, warning:30.0 no unit

Activity Monitor Process Status

This Activity Monitor health test checks that the Cloudera Manager Agent on the Activity Monitor host is heart beating correctly and that the process associated with the Activity Monitor role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Activity Monitor process, a lack of connectivity to the Cloudera Manager Agent on the Activity Monitor host, or a problem with the Cloudera Manager Agent. This test can fail either because the Activity Monitor has crashed or because the Activity Monitor will not start or stop in a timely fashion. Check the Activity Monitor logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Activity Monitor host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the Activity Monitor host, or look in the Cloudera Manager Agent logs on the Activity Monitor host for more details. This test can be enabled or disabled using the Activity Monitor Process Health Test Activity Monitor monitoring setting.

Short Name: Process Status

Property Name Description Template Name Default Value Unit
Activity Monitor Process Health Test Enables the health test that the Activity Monitor's process state is consistent with the role configuration activitymonitor_scm_health_enabled true no unit

Activity Monitor Unexpected Exits

This Activity Monitor health test checks that the Activity Monitor has not recently exited unexpectedly. The test returns "Bad" health if the number of unexpected exits goes above a critical threshold. For example, if this test is configured with a critical threshold of 1, this test would return "Good" health if there have been no unexpected exits recently. If there has been 1 or more unexpected exits recently, this test would return "Bad" health. This test can be configured using the Unexpected Exits Thresholds and Unexpected Exits Monitoring Period Activity Monitor monitoring settings.

Short Name: Unexpected Exits

Property Name Description Template Name Default Value Unit
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. unexpected_exits_window 5 MINUTES
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. unexpected_exits_thresholds critical:any, warning:never no unit

Activity Monitor Web Server Status

This health test checks that the role's web server is responding quickly to requests by the Cloudera Manager Agent, and that the Cloudera Manager Agent can collect metrics from the web server. A failure of this health test may indicate a problem with the web server of the Activity Monitor, a misconfiguration of the Activity Monitor or a problem with the Cloudera Manager Agent. Consult the Cloudera Manager Agent logs and the logs of the Activity Monitor for more detail. If the test's failure message indicates a communication problem, this means that the Cloudera Manager Agent's HTTP requests to the Activity Monitor's web server are failing or timing out. If the test's failure message indicates an unexpected response, then the Activity Monitor's web server responded to the Cloudera Manager Agent's request, but the response could not interpreted for some reason. This test can be configured using the Web Metric Collection Activity Monitor monitoring setting.

Short Name: Web Server Status

Property Name Description Template Name Default Value Unit
Web Metric Collection Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. activitymonitor_web_metric_collection_enabled true no unit
Web Metric Collection Duration The health test thresholds on the duration of the metrics request to the web server. activitymonitor_web_metric_collection_thresholds critical:never, warning:10000.0 MILLISECONDS