NFS Gateway Health Tests

This NFS Gateway health test checks that the Auditing for the NFS Gateway role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of NFS Gateway process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the NFS Gateway 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 NFS Gateway 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

This NFS Gateway health test checks that the number of file descriptors used does not rise above some percentage of the NFS Gateway 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 NFS Gateway 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

nfsgateway_fd_thresholds

Default Value

critical:70.0, warning:50.0

Unit(s)

PERCENT

This NFS Gateway health test checks that the filesystem containing the heap dump directory of this NFS Gateway 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 NFS Gateway 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

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

Short Name: Host Health

NFS Gateway Host Health Test

Description

When computing the overall NFS Gateway health, consider the host's health.

Template Name

nfsgateway_host_health_enabled

Default Value

true

Unit(s)

no unit

This NFS Gateway health test checks that the filesystem containing the log directory of this NFS Gateway 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 NFS Gateway 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

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

Short Name: Process Status

NFS Gateway Process Health Test

Description

Enables the health test that the NFS Gateway's process state is consistent with the role configuration

Template Name

nfsgateway_scm_health_enabled

Default Value

true

Unit(s)

no unit

This NFS Gateway 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

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

Short Name: Temporary Dump Directory Free Space

Temporary 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 Temporary Dump Directory.

Template Name

nfsgateway_dump_directory_free_space_absolute_thresholds

Default Value

critical:5.36870912E9, warning:1.073741824E10

Unit(s)

BYTES

Temporary 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 Temporary Dump Directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Temporary Dump Directory Free Space Monitoring Absolute Thresholds setting is configured.

Template Name

nfsgateway_dump_directory_free_space_percentage_thresholds

Default Value

critical:never, warning:never

Unit(s)

PERCENT

This NFS Gateway health test checks that the NFS Gateway 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 NFS Gateway 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