From: Oliver Welter (mail_at_oliwel.de)
Date: Wed 28 Sep 2005 - 11:59:40 BST
> 1. Can I somehow set things up so a guest can execute a pre-defined command
> script on the host? This would allow nagios to do things like re-start a
> guest if it is not responding.
There are some ways to do so:
1) The "root" Server can access the filesystem of the guest, so you can
use cron or similar to check for a file "inside" the guest from the side
of the host, and than behave accordingly. For Example, you create a file
"reboot" containing "server123" by nagios in a directory inside the
guest and than have a process that collects this file from outside and
do the reboot.
2) There are some helper scripts like the reboot script, but I dont how
these work - might be this can do the job...
3) The standard way, using SSH or RPC or similar and do a normal network
connect like you do with any other remote execution
Regarding performance impact: It does not matter if the process runs in
or outside a guest...
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