Event Server Health Checks

Event Server Event Store Size

This is an Event Server health check that checks that the event store size has not grown too far above the configured event store capacity. A failure of this health check 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 check 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:130.000000, warning:115.000000 PERCENT

Event Server File Descriptors

This Event Server health check 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 check 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 check thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. eventserver_fd_thresholds critical:70.000000, warning:50.000000 PERCENT

Event Server Host Health

This Event Server health check factors in the health of the host upon which the Event Server is running. A failure of this check 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 Check Event Server monitoring setting.

Short Name: Host Health

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

Event Server Index Directory Free Space

This is an Event Server health check that checks that the filesystem containing the index directory of this Event Server has sufficient free space. This test can be configured using the Index Directory Free Space Monitoring Absolute Thresholds and Index Directory Free Space Monitoring Percentage Thresholds Event Server monitoring settings.

Short Name: Index Directory Free Space

Property Name Description Template Name Default Value Unit
Index Directory Free Space Monitoring Absolute Thresholds The health check thresholds for monitoring of free space on the filesystem that contains the index directory. eventserver_index_directory_free_space_absolute_thresholds critical:5368709120.000000, warning:10737418240.000000 BYTES
Index Directory Free Space Monitoring Percentage Thresholds The health check 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. eventserver_index_directory_free_space_percentage_thresholds critical:never, warning:never PERCENT

Event Server Log Directory Free Space

This Event Server health check 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 check thresholds for monitoring of free space on the filesystem that contains this role's log directory. log_directory_free_space_absolute_thresholds critical:5368709120.000000, warning:10737418240.000000 BYTES
Log Directory Free Space Monitoring Percentage Thresholds The health check 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 check 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 check 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 check 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 check 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 Check Event Server monitoring setting.

Short Name: Process Status

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

Event Server Unexpected Exits

This Event Server health check checks that the Event Server has not recently exited unexpectedly. The check returns "Bad" health if the number of unexpected exits goes above a critical threshold. For example, if this check is configured with a critical threshold of 1, this check would return "Good" health if there have been no unexpected exits recently. If there has been 1 or more unexpected exits recently, this check would return "Bad" health. 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 check 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 Event Server health check checks that the web server of the Event 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 check 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's failure message indicates a communication problem, this means that the Cloudera Manager Agent's HTTP requests to the Event Server's web server are failing or timing out. These requests are completely local to the Event Server's host, and so should never fail under normal conditions. If the test's failure message indicates an unexpected response, then the Event Server's web server responded to the Cloudera Manager Agent's request, but the Cloudera Manager Agent could not interpret the response 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 check that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. eventserver_web_metric_collection_enabled true no unit

Event Server Write Pipeline

This Event Server health check checks that no messages are being dropped by the writer stage of the Event Server pipeline. A failure of this health check 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 check 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