Flume Agent Health Tests
Flume Agent Audit Pipeline Test
This Agent health test checks that the Auditing for the Agent role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of Agent process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the Agent 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 Agent 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 |
Flume Agent File Descriptors
This Agent health test checks that the number of file descriptors used does not rise above some percentage of the Agent 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 Agent 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. | flume_agent_fd_thresholds | critical:70.0, warning:50.0 | PERCENT |
Flume Agent Heap Dump Directory Free Space
This Agent health test checks that the filesystem containing the heap dump directory of this Agent 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 Agent 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 |
Flume Agent Host Health
This Agent health test factors in the health of the host upon which the Agent is running. A failure of this test means that the host running the Agent is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Agent Host Health Test Agent monitoring setting.
Short Name: Host Health
| Property Name | Description | Template Name | Default Value | Unit |
|---|---|---|---|---|
| Agent Host Health Test | When computing the overall Agent health, consider the host's health. | flume_agent_host_health_enabled | true | no unit |
Flume Agent Log Directory Free Space
This Agent health test checks that the filesystem containing the log directory of this Agent 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 Agent 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 |
Flume Agent Process Status
This Agent health test checks that the Cloudera Manager Agent on the Agent host is heart beating correctly and that the process associated with the Agent role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Agent process, a lack of connectivity to the Cloudera Manager Agent on the Agent host, or a problem with the Cloudera Manager Agent. This test can fail either because the Agent has crashed or because the Agent will not start or stop in a timely fashion. Check the Agent logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Agent host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the Agent host, or look in the Cloudera Manager Agent logs on the Agent host for more details. This test can be enabled or disabled using the Agent Process Health Test Agent monitoring setting.
Short Name: Process Status
| Property Name | Description | Template Name | Default Value | Unit |
|---|---|---|---|---|
| Agent Process Health Test | Enables the health test that the Agent's process state is consistent with the role configuration | flume_agent_scm_health_enabled | true | no unit |
Flume Agent Swap Memory Usage
This Agent 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. This takes precedence over the host level threshold. | process_swap_memory_thresholds | critical:never, warning:200.0 | BYTES |
Flume Agent Unexpected Exits
This Agent health test checks that the Agent 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 Agent 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 |
Flume Agent Web Server Status
This health test checks that the role's web server is responding quickly to requests by the Cloudera Manager Agent, and that the Cloudera Manager Agent can collect metrics from the web server. Failure of this health test may indicate a problem with the web server of the Agent, a misconfiguration of the Agent, or a problem with the Cloudera Manager Agent. Consult the Cloudera Manager Agent logs and the logs of the Agent for more detail. If the test failure message indicates a communication problem, the Cloudera Manager Agent's HTTP requests to the Agent's web server are failing or timing out. If the test's failure message indicates an unexpected response, the Agent's web server responded to the Cloudera Manager Agent's request, but the response could not be interpreted for some reason. This test can be configured using the Web Metric Collection Agent monitoring setting.
Short Name: Web Server Status
| Property Name | Description | Template Name | Default Value | Unit |
|---|---|---|---|---|
| Web Metric Collection | Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server. | agent_web_metric_collection_enabled | true | no unit |
| Web Metric Collection Duration | The health test thresholds on the duration of the metrics request to the web server. | agent_web_metric_collection_thresholds | critical:never, warning:10000.0 | MILLISECONDS |
