Cloudera Manager Health Tests ReferencePDF version

Atlas Server Health Tests

Atlas Server Canary long description which should be available on the Health Test Page.

Short Name: Atlas Server Canary

This Atlas Server health test checks that the Auditing for the Atlas 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 Atlas Server process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the Atlas 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 Atlas Server monitoring setting.

Short Name: Audit Pipeline Test

Description
The period to review when checking if audits are blocked and not getting processed.
Template Name
mgmt_navigator_failure_window
Default Value
20
Unit(s)
MINUTES
Description
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.
Template Name
mgmt_navigator_failure_thresholds
Default Value
critical:any, warning:never
Unit(s)
BYTES
Description
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.
Template Name
mgmt_navigator_status_check_enabled
Default Value
true
Unit(s)
no unit

This Atlas Server health test checks that the number of file descriptors used does not rise above some percentage of the Atlas 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 Atlas Server monitoring setting.

Short Name: File Descriptors

Description
The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit.
Template Name
atlas_server_fd_thresholds
Default Value
critical:70.0, warning:50.0
Unit(s)
PERCENT

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

Short Name: Host Health

Description
When computing the overall Atlas Server health, consider the host's health.
Template Name
atlas_server_host_health_enabled
Default Value
true
Unit(s)
no unit

This Atlas Server health test checks that the filesystem containing the log directory of this Atlas 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 Atlas Server monitoring settings.

Short Name: Log Directory Free Space

Description
The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory.
Template Name
log_directory_free_space_absolute_thresholds
Default Value
critical:5.36870912E9, warning:1.073741824E10
Unit(s)
BYTES
Description
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.
Template Name
log_directory_free_space_percentage_thresholds
Default Value
critical:never, warning:never
Unit(s)
PERCENT

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

Short Name: Process Status

Description
Enables the health test that the Atlas Server's process state is consistent with the role configuration
Template Name
atlas_server_scm_health_enabled
Default Value
true
Unit(s)
no unit

This Atlas 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

Description
The health test thresholds on the swap memory usage of the process. This takes precedence over the host level threshold.
Template Name
process_swap_memory_thresholds
Default Value
critical:never, warning:200.0
Unit(s)
BYTES

This Atlas Server health test checks the change of the amount of swap memory usage by the role during a predefined period. A failure of this health test may indicate that your machine is overloaded. This test can be configured using the Swap Memory Usage Rate Thresholds and Swap Memory Usage Rate Window monitoring settings.

Short Name: Swap Memory Usage Rate Beta

Description
The health test thresholds on the swap memory usage rate of the process. Specified as the change of the used swap memory during the predefined period.
Template Name
process_swap_memory_rate_thresholds
Default Value
critical:never, warning:never
Unit(s)
BYTES
Description
The period to review when computing unexpected swap memory usage change of the process.
Template Name
process_swap_memory_rate_window
Default Value
5
Unit(s)
MINUTES

This Atlas Server health test checks that the Atlas 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 Atlas Server monitoring settings.

Short Name: Unexpected Exits

Description
The period to review when computing unexpected exits.
Template Name
unexpected_exits_window
Default Value
5
Unit(s)
MINUTES
Description
The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role.
Template Name
unexpected_exits_thresholds
Default Value
critical:any, warning:never
Unit(s)
no unit