On 20 November 2012 09:15, Josh Luthman <josh at imaginenetworksllc.com> wrote:

Does anyone do this with Xymon?

I do this in two ways. One is to use an SNMP extension to present the numbers via SNMP, and have devmon pick up the metrics. This is a bit of setup on the client side, especially if you don't have Net-SNMP installed and configured. It also needs a special netmon template.

The other way is to run a script from the Xymon server that automatically runs "rndc stats", rotates the old stats log file (so it doesn't grow too large), pulls out latest section and (if not too old) injects into Xymon. This simply requires key-based ssh authentication to an agent account on the client, with permission to read /etc/rndc.key and to read the stats file.

This method (my preferred) requires are fairly fancy script on the server, but once setup, it's relatively painless to extend to dozens of DNS servers. It's flexible enough to support ssh, rsh, telnet, ssh-via-ssh and anything that gets you a login shell. It could probably be made to go via a CONNECT web proxy, but I haven't tried that. I have it doing multi-hop gymnastics through firewalls and jump boxes to get where it needs to go. Happy to share if it might be helpful to someone.

Neither of these are typical, I would imagine. Most people would implement as a client-side script on the DNS server that reports its results back to the Xymon server via data or status message. But on many of the DNS servers I monitor, I am unable to install a Xymon client.

Cheers Jeremy