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Check manual page of nfsmounts

Checkmk Manual

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Health of NFS mounts

Distribution: official part of Check_MK
License: GPL
Supported Agents: Linux, AIX

This check probes the availability of NFS mounts. The Linux agent sends the status of all NFS mounts, if the command line utility waitmax is available (it is is used to avoid hanging if the NFS server is not responding). The probe is done by trying a stat -f (system call statfs(2)) on the mount point. If that lasts longer then 2 seconds, then the server is considered to be not responding.

When you install the Linux agent manually, please do not forget to also install waitmax into /usr/bin. That file is shipped together with the agent. When waitmax is missing, the agent will silently omit the section nfsmounts.

If the NFS mount is "stale", then stat -f returns immediately but with a size of -1. The check detects that and results in a warning state.

Please note, that though this check outputs the current usage of the remote filesystem, no levels can be defined for the used space and no performance data is output. Please do a check for used space directly on the NFS server.


The mount point.


All NFS mounts are found automatically. This is done by scanning /proc/mounts. The file /etc/fstab is irrelevant.