Use munin to monitor Ubuntu server performance
munin is a light weight server monitoring tool. After I read the following two articles I decided to give a try. Here are the links for the articles:
Monitor Servers and Clients using Munin in Ubuntu
Monitoring systems with munin
The setup is a piece of cake. I have a little bit confusion when I setup allow IP at munin-node cconfig file. But I figured out after reading the articles. The IP should be the munin server’s IP address. It means that allow munin server at that IP to survey the munin client.
Another place I was confused was to start munin server. I checked /etc/crontab and did not see anything related to munin. I manually added an entry based an article describing how to use munin in red-hat system. It was not right on Debian/Ubuntu. I learned that there is cron job was put in /etc/cron.d for munin. Yes, indeed there is one. I waited a while and did not see any update on the web page. I decided to manually execute the munin once. I used the following command:
/usr/bin/munin-cron –force-root
If you change the htmldir, please remember to change the owner and group of the new directory and its subdir to munin:munin. Otherwise you will get some error message like “Lock already exists: /var/run/munin/munin-graph.lock. Dying.”. The command is:
chown -R munin:munin
Read details about AWFFULL http log analysis tool at Use AWFFULL to analyze website log files.
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