Navigator Metadata Server Health Tests

Navigator Metadata Server Audit Log Directory Free Space

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

Short Name: Audit Log Directory Free Space

Audit Log Directory Free Space Monitoring Absolute Thresholds

Description
The health test thresholds for monitoring of free space on the filesystem that contains this role's Audit Log Directory.
Template Name
navigatormetaserver_audit_event_log_directory_free_space_absolute_thresholds
Default Value
critical:5.36870912E9, warning:1.073741824E10
Unit(s)
BYTES

Audit Log Directory Free Space Monitoring Percentage Thresholds

Description
The health test thresholds for monitoring of free space on the filesystem that contains this role's Audit Log Directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Audit Log Directory Free Space Monitoring Absolute Thresholds setting is configured.
Template Name
navigatormetaserver_audit_event_log_directory_free_space_percentage_thresholds
Default Value
critical:never, warning:never
Unit(s)
PERCENT

Navigator Metadata Server Audit Pipeline Test

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

Short Name: Audit Pipeline Test

Monitoring Period For Audit Failures

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

Navigator Audit Failure Thresholds

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

Navigator Audit Pipeline Health Check

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

Navigator Metadata Server File Descriptors

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

Short Name: File Descriptors

File Descriptor Monitoring Thresholds

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

Navigator Metadata Server Heap Dump Directory Free Space

This Navigator Metadata Server health test checks that the filesystem containing the heap dump directory of this Navigator Metadata 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 Navigator Metadata Server monitoring settings.

Short Name: Heap Dump Directory Free Space

Heap Dump Directory Free Space Monitoring Absolute Thresholds

Description
The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump directory.
Template Name
heap_dump_directory_free_space_absolute_thresholds
Default Value
critical:5.36870912E9, warning:1.073741824E10
Unit(s)
BYTES

Heap Dump Directory Free Space Monitoring Percentage Thresholds

Description
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.
Template Name
heap_dump_directory_free_space_percentage_thresholds
Default Value
critical:never, warning:never
Unit(s)
PERCENT

Navigator Metadata Server Host Health

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

Short Name: Host Health

Navigator Metadata Server Host Health Test

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

Navigator Metadata Server Log Directory Free Space

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

Short Name: Log Directory Free Space

Log Directory Free Space Monitoring Absolute Thresholds

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

Log Directory Free Space Monitoring Percentage Thresholds

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

Navigator Metadata Server Navigator Metadata Server Storage Dir Free Space

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

Short Name: Navigator Metadata Server Storage Dir Free Space

Navigator Metadata Server Storage Dir Free Space Monitoring Absolute Thresholds

Description
The health test thresholds for monitoring of free space on the filesystem that contains this role's Navigator Metadata Server Storage Dir.
Template Name
navigatormetaserver_data_directory_free_space_absolute_thresholds
Default Value
critical:5.36870912E9, warning:1.073741824E10
Unit(s)
BYTES

Navigator Metadata Server Storage Dir Free Space Monitoring Percentage Thresholds

Description
The health test thresholds for monitoring of free space on the filesystem that contains this role's Navigator Metadata Server Storage Dir. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Navigator Metadata Server Storage Dir Free Space Monitoring Absolute Thresholds setting is configured.
Template Name
navigatormetaserver_data_directory_free_space_percentage_thresholds
Default Value
critical:never, warning:never
Unit(s)
PERCENT

Navigator Metadata Server Process Status

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

Short Name: Process Status

Navigator Metadata Server Process Health Test

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

Navigator Metadata Server Solr Element Count Threshold Test

This alert indicates when the document count in the Navigator Elements Solr core is reaching Solrs maximum limit. Typically, the maximum number of documents in a Solr core is around 2 billion. When the document count reaches the critical threshold, Navigator Metadata Server will stop working. The warning threshold is set to give administrators time to reduce the volume of documents before Navigator can no longer function. Consider changing these thresholds if you want to give more time between when the alerts are triggered and when Navigator Metadata Server stops working. To reduce the number of documents, make sure Navigator purge is running regularly. For more information, see Troubleshooting Cloudera Navigator Metadata Server

Short Name: Solr Element Count Threshold Test

Solr Element Count Threshold

Description
Threshold for throwing alert when the Solr Element Count reaches
Template Name
navigatormetaserver_solr_element_count_threshold
Default Value
critical:1.0E9, warning:5.0E8
Unit(s)
no unit

Navigator Metadata Server Solr Relation Count Threshold Test

This alert indicates when the document count in the Navigator Relations Solr core is reaching Solrs maximum limit. Typically, the maximum number of documents in a Solr core is around 2 billion. When the document count reaches the critical threshold, Navigator Metadata Server will stop working. The warning threshold is set to give administrators time to reduce the volume of documents before Navigator can no longer function. Consider changing these thresholds if you want to give more time between when the alerts are triggered and when Navigator Metadata Server stops working. To reduce the number of documents, make sure Navigator purge is running regularly. For more information, see Troubleshooting Cloudera Navigator Metadata Server .

Short Name: Solr Relation Count Threshold Test

Solr Relation Count Threshold

Description
Threshold for throwing alert when the Solr Relation Count reaches
Template Name
navigatormetaserver_solr_relation_count_threshold
Default Value
critical:1.0E9, warning:5.0E8
Unit(s)
no unit

Navigator Metadata Server Swap Memory Usage

This Navigator Metadata 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

Process Swap Memory Thresholds

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

Navigator Metadata Server Unexpected Exits

This Navigator Metadata Server health test checks that the Navigator Metadata 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 Navigator Metadata Server monitoring settings.

Short Name: Unexpected Exits

Unexpected Exits Monitoring Period

Description
The period to review when computing unexpected exits.
Template Name
unexpected_exits_window
Default Value
5
Unit(s)
MINUTES

Unexpected Exits Thresholds

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