You could always grab a copy of xymonclient.sh and xymonclient-linux.sh and adjust the information gathering parts to run everything over ssh (never rsh. Authentication and encryption for ftw)

Just hardwire the xymonclient.sh to send the details as the server you're monitoring.

Steve Anderson

-----Original Message----- From: xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] On Behalf Of Michael Beatty Sent: 10 April 2013 15:28 To: xymon at xymon.com Subject: [Xymon] Checking disk space on a "backup" system

All of the hosts that I will be monitoring have a backup. This backup is, for most all practical purposes, idle. It does nothing but sits and wait for someone to move it into production. The primary system copies files and database exports over to this backup system. I had no intention on running a Xymon client on these backup systems (though one would be installed and waiting to be started), the only monitoring is a ping test.

With that said, one exposure that exists on these backup systems is that the disk space in the file system has the potential to fill up. Is there any functionality built into xymon that would let me check the disk space on this remote system and report it back from the primary system?

My initial thought was to write an extension script that does an 'rsh backup du /home/user/' and parsing the results and test against a threshold, but I would prefer to utilize what is built into xymon before recreating the wheel.

Thanks

-- Michael Beatty

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On 11 April 2013 00:27, Michael Beatty <Michael.Beatty at sherwin.com> wrote:

My initial thought was to write an extension script that does an 'rsh backup du /home/user/' and parsing the results and test against a threshold, but I would prefer to utilize what is built into xymon before recreating the wheel.

There's nothing within Xymon that supports this, without a client installation. As others have said, this might not be a bad idea anyway. Just have the client run and report its details. But if you don't want to do this...

If you have snmp enabled on the server, you can get disk space using devmon, which is not part of Xymon, but a well-used add-on.

You have identified one risk: that the disk fills up. But what about the risk that the backup copy process fails for another reason (account expires, rsh/ssh daemon stopped, out of inodes, etc). So you probably want to build some tests into your copy script and have it report success to Xymon. While you're at it, just get the "du" output and report that also. If you use a client message, you can report as little or as much info as you like. A status message would be required for the backup result:

SERVERNAME=name.of.server REPORT=backup_to_server $SERVERNAME # calls backup function, which returns empty report if OK

report status

if [ "$REPORT" ]; then printf "status $SERVERNAME.backup red date Backup to $SERVERNAME failed\n$REPORT\n" else printf "status $SERVERNAME.backup green date Backup to $SERVERNAME OK\n" fi | xymoncmd sh -c 'xymon $XYMSRV @'

report client data

CLIENTDATA=ssh $SERVERNAME 'echo "[uptime]"; uptime; echo "[df]"; df -Pl /home/usr; echo "[inode]"; df -Pil /home/usr' printf "client $SERVERNAME.linux\n$CLIENTDATA\n" | xymoncmd sh -c 'xymon $XYMSRV @'

J