Health of NFS Mounts
|Distribution:||official part of Check_MK|
|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
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.
To configure usage levels and whether or not to output metrics use the
WATO rule "Network filesystem - overall status and usage (e.g. NFS)"
The mount point.
One service is created for each NFS mounts.
This is done by scanning /proc/mounts. The file /etc/fstab is irrelevant.