Munin: Server Statistics, The Easy Way

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Munin: Server Statistics, The Easy Way

by admin

Server usage statistics always play a useful role when things go wrong. Often they provide you with the warnings like « oops! there is too much data, we’ll need a new disk » or « wow! good traffic, maybe we should get more bandwidth ». If you are asked to write code yourself for collecting these data and represent in an graphical fashion then you’ll spend a few days, if not weeks to do so.

Well, why to reinvent wheel? Just use munin and be happy. Installing munin is easy enough. Just do a yum install munin munin-node and you’ll be done.
After installation you need to configure it. For that edit file /etc/munin/munin.conf and uncomment and edit the following lines

[...]
dbdir /var/lib/munin
htmldir /var/www/html/munin
logdir /var/log/munin
rundir /var/run/munin
[...]
# Where to look for the HTML templates
tmpldir /etc/munin/templates
[...]
# a simple host tree
[localhost]
address 127.0.0.1
use_node_name yes
[...]

Now start the munin node service service munin-node start. Well, that is it. Just wait for a few minutes and then go to http://localhost/munin to get the graphs.

Here are a couple of the graphs I have obtained (and there are tonnes more):

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