November 2007
Beginner
642 pages
15h 43m
English
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14.15. Monitoring Remote Hosts
Problem
All of this monitoring of your local system is OK, but what you really want to do is set up an MRTG server to monitor remote servers and routers. How do you do this?
Solution
The hosts you wish to monitor either need to have built-in SNMP agents, or they must have Net-snmp installed. Virtually all modern networking devices have built-in SNMP agents. Linux and Unix servers need Net-snmp.
For configuring your Linux hosts, follow Recipe 14.2, Recipe 14.3, and Recipe 14.4.
Then, in mrtg.cfg, you need to change the
Target line to point to your remote
host, like this:
Target[uberpc.disk]: dskPercent.2&dskPercent.3:password@uberpc
And of course, fiddle with the legends and page titles so you know what graph belongs to what.
Discussion
Be sure to review the SNMP Recipes to learn how to test and troubleshoot MRTG's SNMP queries, because if SNMP doesn't work, MRTG won't work.
You only need an SNMP agent on your remote hosts; they don't need an HTTP server or MRTG.
See Also
Net-SNMP: http://net-snmp.sourceforge.net
man 1 snmpd.confman 1 snmpwalk.confman 1 mrtg-referenceMRTG home page: http://oss.oetiker.ch/mrtg/
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.