Checkmk is not monitoring NFS or NAS filesystems mounted in the servers

mahi · July 18, 2024, 3:28am

Hi,

Recently we had some issues with the NFS filesyste. some of them are not mounting properly in the servers. the checkmk agent by default doesnot include the NFS filesystems in the monitoring.

We need to have monitoring for the NFS filesystem that is mounted in the server along with the disks. There is a post in the community regarding the same and the solution suggested is working for check_mk agent 1.6

But it is not working for check_mk agent 2.2. Can someone help on this to enable the monitoring for NFS filesystems.

OS - RHEL
Checkmk agent version - 2.2

Thanks,
Mahi

andreas-doehler · July 18, 2024, 6:55am

This i cannot say.
Here is an NFS mount on my Proxmox and it is shown normally inside the checks.

mahi · July 18, 2024, 9:36am

github.com

Checkmk/checkmk/blob/release/2.2.0p29/agents/check_mk_agent.linux

#!/bin/bash
# Copyright (C) 2019 Checkmk GmbH - License: GNU General Public License v2
# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
# conditions defined in the file COPYING, which is part of this source code package.

#
# BEGIN COMMON AGENT CODE
#

usage() {
    cat <<HERE
Usage: ${0} [OPTION...]

The Checkmk agent to monitor *nix style systems.

Options:
  -h, --help                 show this message and exit
  -d, --debug                emit debugging messages
  -p, --profile              create files containing the execution times
  --force-inventory          get the output of the agent plugin 'mk_inventory'

This file has been truncated. show original

Hope this defines the file systems what to monitor.

In my case need to enable the NAS to be monitored.

andreas-doehler · July 18, 2024, 11:20am

No - this is only the default “section_df”

Go some lines down the code and you will see the “section_nfs_mounts”.
Starting in line 602.

mahi · July 19, 2024, 6:12am

Hi @andreas-doehler ,

Thanks, seems the agent is fetching the NFS details under section <<<nfsmounts_v2:sep(0)>>>
also, the agent output downloaded from the console also having the NFS details. still I’m not able to see the metrics even after doing the re-scan. Kindly suggest.

andreas-doehler · July 19, 2024, 6:44am

There can be different reasons.

disabled checks
disabled services

What do you see on the command line with?

cmk --debug -vvI hostname

Anders · July 19, 2024, 4:48pm

if you run a service discovery with tabular rasa you should see the NFS mounts as disabled
If so you have some rules that suppress (not the same as disable) them.

mahi · July 23, 2024, 10:25am

Thanks. In my case, the nfs mount health check was disabled in service discovery rules.
after excluding the servers from the rule, I’m able to see the utilization in checkmk. but still, am not able to see the historic graphical information. Is it same for you ? @andreas-doehler @Anders

andreas-doehler · July 23, 2024, 12:31pm

As i said.

If you take a look at the rule for this check, you should see this.

This is the default setting. You have to make a rule where the performance data is not disabled.