Tracer Health Tests
Tracer Audit Pipeline Test
This Tracer health test checks that the Auditing for the Tracer role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of Tracer process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the Tracer 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 Tracer 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 |
Tracer File Descriptors
This Tracer health test checks that the number of file descriptors used does not rise above some percentage of the Tracer 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 Tracer 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. | accumulo_tracer_fd_thresholds | critical:70.0, warning:50.0 | PERCENT |
Tracer Host Health
This Tracer health test factors in the health of the host upon which the Tracer is running. A failure of this test means that the host running the Tracer is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Tracer Host Health Test Tracer monitoring setting.
Short Name: Host Health
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Tracer Host Health Test | When computing the overall Tracer health, consider the host's health. | accumulo_tracer_host_health_enabled | true | no unit |
Tracer Process Status
This Tracer health test checks that the Cloudera Manager Agent on the Tracer host is heart beating correctly and that the process associated with the Tracer role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Tracer process, a lack of connectivity to the Cloudera Manager Agent on the Tracer host, or a problem with the Cloudera Manager Agent. This test can fail either because the Tracer has crashed or because the Tracer will not start or stop in a timely fashion. Check the Tracer logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Tracer host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the Tracer host, or look in the Cloudera Manager Agent logs on the Tracer host for more details. This test can be enabled or disabled using the Tracer Process Health Test Tracer monitoring setting.
Short Name: Process Status
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Tracer Process Health Test | Enables the health test that the Tracer's process state is consistent with the role configuration | accumulo_tracer_scm_health_enabled | true | no unit |
Tracer Swap Memory Usage
This Tracer 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 |
Tracer Unexpected Exits
This Tracer health test checks that the Tracer 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 Tracer 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 |