Skip to main content

Munin for Monitoring

Lately I've been very busy with work, but I find that I still need to keep an eye on the Linux servers I have kicking around at home and at the office. I use Nagios for basic monitoring (ping, smtp, http) but wanted something a bit more fine grained on the actual host itself. I stumbled on munin when doing some Google searching.

Munin's homepage is here: http://munin-monitoring.org and I'm running it on a variety of servers at them moment (mostly Ubuntu and Debian). It supports quite a few distributions and operating systems so check it out if you're interested in seeing what's happening on your servers.

I like the many graphs that it produces to demonstrate what's happening and I also fell into the trap of trying to over-configure things. There are only a couple of basic things to change to suit yourself, restart apache2 and munin-node and it's slamming. It also monitors multiple machines - install munin-node instead of munin and munin-node and configure as recommended. I thought I'd be tricky with it and things didn't go as planned so it appeared that it wasn't working. I was over thinking it though and it did work, very well actually, once I found the spot it was creating the files in :-)

A handy app and a nice way to keep on top of your servers!

Comments

Popular posts from this blog

Plone - the open source Content Management System - a review

One of my clients, a non-profit, has a lot of files on it's clients. They need a way to digitally store these files, securely and with availability for certain people. They also need these files to expire and be deleted after a given length of time - usually about 7 years. These were the parameters I was given to search for a Document Management System (DMS) or more commonly a Content Management System (CMS). There are quite a lot of them, but most are designed for front facing information delivery - that is, to write something, put it up for review, have it reviewed and then published. We do not want this data published ever - and some CMS's make that a bit tricky to manage. So at the end of the day, I looked into several CMS systems that looked like they could be useful. The first one to be reviewed was OpenKM ( www.openkm.com ). It looked OK, was open source which is preferable and seemed to have solid security and publishing options. Backing up the database and upgradin

Musings on System Administration

I was reading an article discussing forensic preparation for computer systems. Some of the stuff in there I knew the general theory of, but not the specifics of how to perform. As I thought about it, it occurred to me that Systems Administration is such a vast field. There is no way I can know all of this stuff. I made a list of the software and operating systems I currently manage. They include: - Windows Server 2003, Standard and Enterprise - Exchange 2003 - Windows XP - Windows Vista - Windows 2000 - Ubuntu Linux - OpenSuSE Linux - Mac OSX (10.3 and 10.4) - Solaris 8 - SQL 2005 - Various specialised software for the transport industry I have specific knowledge on some of this, broad knowledge on all of it, and always think "There's so much I *don't* know". It gets a bit down heartening sometimes. For one thing - I have no clue about SQL 2005 and I need to make it work with another bit of software. All complicated and nothing straightforward. Irritating doesn&

elementary OS 5.1 Hera - a review and a revisit

 It's been ages since I used a desktop Linux distribution - being up to my ears in the horror of implementing ISO 27001 doesn't leave you much time to play around with computers - too busy writing policies, auditing and generally trying to improve security to a formally acceptable and risk managed level. I need a quick, small OS though to do the occasional network scan, view the contents of a dodgy file on and for general, low impact activities. I remembered reviewing elementary OS ( elementary.io ) some time ago ( see  https://www.ryv.id.au/2015/01/elementary-os-review.html ) from 2015 so I thought it was worth a revisit.  I downloaded the ISO from their website, forgoing to donation for the moment while I review it. If it turns out I'm going to keep using it, I'll send them some love. The ISO is 1.38GB in size and I booted it in a VMware Player instance. From go to whoa (I won't include the install photos here) it took about 10 minutes with a dual vCPU and 4GB of