Kerberos Ticket Renewer Health Tests

Kerberos Ticket Renewer File Descriptors

This Kerberos Ticket Renewer health test checks that the number of file descriptors used does not rise above some percentage of the Kerberos Ticket Renewer 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 Kerberos Ticket Renewer 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. kt_renewer_fd_thresholds critical:70.0, warning:50.0 PERCENT

Kerberos Ticket Renewer Heap Dump Directory Free Space

This Kerberos Ticket Renewer health test checks that the filesystem containing the heap dump directory of this Kerberos Ticket Renewer 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 Kerberos Ticket Renewer 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

Kerberos Ticket Renewer Host Health

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

Short Name: Host Health

Property Name Description Template Name Default Value Unit
Kerberos Ticket Renewer Host Health Test When computing the overall Kerberos Ticket Renewer health, consider the host's health. kt_renewer_host_health_enabled true no unit

Kerberos Ticket Renewer Log Directory Free Space

This Kerberos Ticket Renewer health test checks that the filesystem containing the log directory of this Kerberos Ticket Renewer 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 Kerberos Ticket Renewer 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

Kerberos Ticket Renewer Process Status

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

Short Name: Process Status

Property Name Description Template Name Default Value Unit
Kerberos Ticket Renewer Process Health Test Enables the health test that the Kerberos Ticket Renewer's process state is consistent with the role configuration kt_renewer_scm_health_enabled true no unit

Kerberos Ticket Renewer Swap Memory Usage

This Kerberos Ticket Renewer 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

Kerberos Ticket Renewer Unexpected Exits

This Kerberos Ticket Renewer health test checks that the Kerberos Ticket Renewer 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 Kerberos Ticket Renewer 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