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Chapter 99. Checking disk space using IdM Healthcheck

This section describes how to monitor the Identity Management server’s free disk space using the Healthcheck tool.

For details, see Healthcheck in IdM.

Prerequisites

  • The Healthcheck tool is only available on RHEL 8.1 and newer.

99.1. Disk space healthcheck test

The Healthcheck tool includes a test for checking available disk space. Insufficient free disk space can cause issues with:

  • Logging
  • Execution
  • Backups

The test checks the following paths:

Table 99.1. Tested paths

Paths checked by the testMinimal disk space in MB

/var/lib/dirsrv/

1024

/var/lib/ipa/backup/

512

/var/log/

1024

var/log/audit/

512

/var/tmp/

512

/tmp/

512

To list all tests, run the ipa-healthcheck with the --list-sources option: 

# ipa-healthcheck --list-sources

You can find the file system space check test under the ipahealthcheck.system.filesystemspace source:

FileSystemSpaceCheck

This test checks available disk space in the following ways:

  • The minimum raw free bytes needed.
  • The percentage — the minimum free disk space is hardcoded to 20%.

99.2. Screening disk space using the healthcheck tool

This section describes a standalone manual test of available disk space on an Identity Management (IdM) server using the Healthcheck tool.

Since Healthcheck includes many tests, you can narrow the results by:

  • excluding all successful test: --failures-only
  • including only space check tests: --source=ipahealthcheck.system.filesystemspace

Procedure

  • To run Healthcheck with warnings, errors and critical issues regarding available disk space, enter: 

    # ipa-healthcheck --source=ipahealthcheck.system.filesystemspace --failures-only

A successful test displays empty brackets: 

[]

As an example, a failed test can display: 

{
  "source": "ipahealthcheck.system.filesystemspace",
  "check": "FileSystemSpaceCheck",
  "result": "ERROR",
  "kw": {
    "msg": "/var/lib/dirsrv: free space under threshold: 0 MiB < 1024 MiB",
    "store": "/var/lib/dirsrv",
    "free_space": 0,
    "threshold": 1024
  }
}

The failed test informs you that the /var/lib/dirsrv directory has run out of space.

Additional resources

  • See man ipa-healthcheck.