Rsync server test

[rob.moss at uk.bnpparibas.com]

nagios-users-bounces at lists.sourceforge.net wrote on 06/09/2006 13:29:06:

> I only ever use rsync in conjunction with sshd.
>
> short of generating errors with the check_tcp you could nmap the port
> (might that generate more/less noise).
>
> or you could have a test that retreives a file from rsync, thereby
> creating an access entry in the log, but no error.
>
> A more advanced solution would be to run lsof on the monitored host, and
> see if rsync is running, is not zombie, and is listening on TCP 873.
>
>
> On Wed, 6 Sep 2006, Hari Sekhon wrote:
>
> > Date: Wed, 06 Sep 2006 13:19:02 +0100
> > From: Hari Sekhon <hpsekhon at googlemail.com>
> > To: nagios-users at lists.sourceforge.net
> > Subject: [Nagios-users] Rsync server test
> >
> > I am testing an Rsync server by doing
> >
> > ./check_tcp -H $HOSTADDRESS$ -p 873
> >
> >
> > but I have noticed that this causes the Rsync server to spew the
> > following into the logs:
> >
> > rsyncd[10422]: rsync: writefd_unbuffered failed to write 74 bytes
> > [receiver]: Broken pipe (32)
> > rsyncd[10422]: rsync error: error in rsync protocol data stream (code
> > 12) at io.c(1121) [receiver=2.6.8]
> >
> >
> > every single time a check is performed. This is obviously because of
the
> > tcp connection and then abrupt disconnection. I'd really like to get
rid
> > of all this noise from the logs.
> >
> > Is there a better way of doing this? Does anybody else monitor a Rsync
> > server with nagios and if so how?

The problem is coming from misusing the rsync protocol and the rsync daemon
complaining about receiving garbage.  You could for example rsync a working
file, thus running an end to end test, or find the RFC for rsync and send
it some kind of "quit and leave cleanly" command which will stop it from
complaining.


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