Event Server Health Tests

Event Server Audit Pipeline Test

This Event Server health test checks that the Auditing for the Event Server role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of Event Server process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the Event Server host isn't able to send audits because of some network issue. Check the Cloudera Manager Agent logs and Cloudera Audit Server logs for more details. This test can be enabled or disabled using the Navigator Audit Pipeline Health Check Event Server monitoring setting.

Short Name: Audit Pipeline Test

Property Name Description Template Name Default Value Unit
Monitoring Period For Audit Failures The period to review when checking if audits are blocked and not getting processed. mgmt_navigator_failure_window 20 MINUTES
Navigator Audit Failure Thresholds The health test thresholds for failures encountered when monitoring audits within a recent period specified by the mgmt_navigator_failure_window configuration for the role. The value that can be specified for this threshold is the number of bytes of audits data that is left to be sent to audit server. mgmt_navigator_failure_thresholds critical:any, warning:never BYTES
Navigator Audit Pipeline Health Check Enable test of audit events processing pipeline. This will test if audit events are not getting processed by Audit Server for a role that generates audit. mgmt_navigator_status_check_enabled true no unit

Event Server Cloudera Manager Descriptor Age

This is a Event Server health test that checks if the Cloudera Manager descriptor has been refreshed recently. The Cloudera Manager descriptor is used to pass configuration information from the Cloudera Manager Server to the Event Server. If the descriptor becomes stale, Event Server operation may be impacted because the Event Server will receive information about new hosts, roles, and services, or changes to existing hosts, roles, and services. A stale descriptor usually indicates problems communicating with the Cloudera Manager Server but can also indicate performance problems or a bug. Consult the Event Server log and the Cloudera Manager Server log for more information. This test can be configured using the Cloudera Manager Descriptor Age Thresholds Cloudera Manager Event Server setting.

Short Name: Cloudera Manager Descriptor Age

Property Name Description Template Name Default Value Unit
Cloudera Manager Descriptor Age Thresholds The health test thresholds for monitoring the time since the Cloudera Manager descriptor was last refreshed. scm_descriptor_age_thresholds critical:120000.0, warning:60000.0 no unit

Event Server Event Server Index Directory Free Space

This is a Event Server health test that checks that the filesystem containing the Event Server Index Directory of this Event Server has sufficient free space. See the Event Server Index Directory description on the Event Server configuration page for more information on this directory type. This test can be configured using the Event Server Index Directory Free Space Monitoring Absolute Thresholds and Event Server Index Directory Free Space Monitoring Percentage Thresholds Event Server monitoring settings.

Short Name: Event Server Index Directory Free Space

Property Name Description Template Name Default Value Unit
Event Server Index Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's Event Server Index Directory. eventserver_index_directory_free_space_absolute_thresholds critical:5.36870912E9, warning:1.073741824E10 BYTES
Event Server Index Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's Event Server Index Directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Event Server Index Directory Free Space Monitoring Absolute Thresholds setting is configured. eventserver_index_directory_free_space_percentage_thresholds critical:never, warning:never PERCENT

Event Server Event Store Size

This is an Event Server health test that checks that the event store size has not grown too far above the configured event store capacity. A failure of this health test indicates that the Event Server is having a problem performing cleanup. This may indicate a configuration problem or bug in the Event Server. This test can be configured using the Event Store Capacity Monitoring Thresholds Event Server monitoring setting.

Short Name: Event Store Size

Property Name Description Template Name Default Value Unit
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. eventserver_capacity_thresholds critical:130.0, warning:115.0 PERCENT

Event Server File Descriptors

This Event Server health test checks that the number of file descriptors used does not rise above some percentage of the Event Server 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 Event Server 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. eventserver_fd_thresholds critical:70.0, warning:50.0 PERCENT

Event Server GC Duration

This Event Server health test checks that the Event Server is not spending too much time performing Java garbage collection. It checks that no more than some percentage of recent time is spent performing Java garbage collection. A failure of this health test may indicate a capacity planning problem or misconfiguration of the Event Server. This test can be configured using the Garbage Collection Duration Thresholds and Garbage Collection Duration Monitoring Period Event Server monitoring settings.

Short Name: GC Duration

Property Name Description Template Name Default Value Unit
Garbage Collection Duration Monitoring Period The period to review when computing the moving average of garbage collection time. eventserver_gc_duration_window 5 MINUTES
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. eventserver_gc_duration_thresholds critical:60.0, warning:30.0 no unit

Event Server Heap Dump Directory Free Space

This Event Server health test checks that the filesystem containing the heap dump directory of this Event Server has sufficient free space. This test can be configured using the Heap Dump Directory Free Space Monitoring Absolute Thresholds and Heap Dump Directory Free Space Monitoring Percentage Thresholds Event Server monitoring settings.

Short Name: Heap Dump Directory Free Space

Property Name Description Template Name Default Value Unit
Heap Dump Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump directory. heap_dump_directory_free_space_absolute_thresholds critical:5.36870912E9, warning:1.073741824E10 BYTES
Heap Dump Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Heap Dump Directory Free Space Monitoring Absolute Thresholds setting is configured. heap_dump_directory_free_space_percentage_thresholds critical:never, warning:never PERCENT

Event Server Host Health

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

Short Name: Host Health

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

Event Server Log Directory Free Space

This Event Server health test checks that the filesystem containing the log directory of this Event Server 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 Event Server 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

Event Server Process Status

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

Short Name: Process Status

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

Event Server Swap Memory Usage

This Event Server health test checks the amount of swap memory in use by the role. A failure of this health test may indicate that your machine is overloaded. This test can be configured using the Process Swap Memory Thresholds monitoring settings.

Short Name: Swap Memory Usage

Property Name Description Template Name Default Value Unit
Process Swap Memory Thresholds The health test thresholds on the swap memory usage of the process. process_swap_memory_thresholds critical:never, warning:any BYTES

Event Server Unexpected Exits

This Event Server health test checks that the Event Server has not recently exited unexpectedly. The test returns "Bad" health if the number of unexpected exits exceeds a critical threshold. For example, if this test is configured with a critical threshold of 1, this test returns "Good" health if there have been no unexpected exits recently. If 1 or more unexpected exits occured recently, this test returns "Bad" health. The test also indicates whether any of the exits were caused by an OutOfMemory error if the Cloudera Manager Kill When Out of Memory monitoring setting is enabled. This test can be configured using the Unexpected Exits Thresholds and Unexpected Exits Monitoring Period Event Server 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

Event Server 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. Failure of this health test may indicate a problem with the web server of the Event Server, a misconfiguration of the Event Server, or a problem with the Cloudera Manager Agent. Consult the Cloudera Manager Agent logs and the logs of the Event Server for more detail. If the test failure message indicates a communication problem, the Cloudera Manager Agent's HTTP requests to the Event Server's web server are failing or timing out. If the test's failure message indicates an unexpected response, the Event Server's web server responded to the Cloudera Manager Agent's request, but the response could not be interpreted for some reason. This test can be configured using the Web Metric Collection Event Server 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. eventserver_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. eventserver_web_metric_collection_thresholds critical:never, warning:10000.0 MILLISECONDS

Event Server Write Pipeline

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

Short Name: Write Pipeline

Property Name Description Template Name Default Value Unit
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. eventserver_write_pipeline_thresholds critical:any, warning:never no unit
Event Server Write Pipeline Monitoring Time Period The time period over which the Event Server write pipeline will be monitored for dropped messages. eventserver_write_pipeline_window 5 MINUTES