[HowTo] Get some nice Server graphs with Munin

[BeNe]

Hello everybody,

with Omega you have a perfect tool to manage your Resellers and Customers on your Server.
It is easy and good to handle.
Sometimes it is also good to know, what your Machine does.
I mean CPU Load, Memory usage, Traffic, Mailtraffic, MySQL Stats and so on.

On Linux system is it very easy to make some nice Graphs about these.
And every Sysadmin love Graphs

1.) Installation

First at all we need a Debian System, like Sarge or Etch.
We install munin with apt-get:

Code:

#apt-get install munin munin-node

2.) Configuration

After installation we must configure munin.

Code:

#vi /etc/munin/munin-node.conf

change host * to host 127.0.0.1

3.) Restart munin to bring the effect.

Code:

/etc/init.d/munin-node restart

4.) Bring munin and apache together

Munin is automatic creating a Directory under "/var/www/munin"
and set a cronjob that every 5min generate new graphs.
The only thing that we have to do, is to set this path in the Apache config. Here we need to create a new file under "/etc/apache2/sites-enabled/munin.conf"

Code:

#vi /etc/apache2/sites-enabled/munin.conf

Put this code in here:

Code:

Alias /munin "/var/www/munin"

<Directory /usr/lib/cgi-bin/awstats>
   AllowOverride AuthConfig
  Options FollowSymLinks ExecCGI
</Directory>

Restart Apache to bring the effect:

Code:

/etc/init.d/apache2 restart

6.) Check it

Now open a new Browser-Tab and check Munin:

Code:

http://www.your-domain.tld/munin

You should see something like this:



7.) .htaccess

To make it more secure, you can put a .htaccess in the directory.

Code:

#vi /var/www/munin/.htpasswd

Contents :

Code:

USERNAME:iqhCaA/JBcng.

(Password can generated here under "Kennwort")

Create a .htaccess

Code:

#vi /var/www/munin/.htaccess

Contents:

Code:

AuthType Basic
AuthName "Munin Graphs"
AuthUserFile /var/www/munin/.htpasswd
require user USERNAME

8.) Put it in your VHCS Menu

Log in as Admin -> Settings -> Custom Menus

Button name : munin
Button link : http://www.your-domain.tld/munin
Button target: http://www.your-domain.tld/munin
Show in: Administrator Level (or change it if you want)
Save.

Dont forget to wait 5min for the first Graphs

Here are some Munin directories:
--------------------------------------------------------
# The Munin-Directory for Data
dbdir /var/lib/munin

# Munin -Directory for generated Websites
htmldir /var/www/munin

# The Munin logfiles
logdir /var/log/munin

# Temporary run files (pid file etc)
rundir /var/run/munin

# HTML Templates for the Munin Layout
tmpldir /etc/munin/templates

#Munin Plugin Direcotry
/usr/share/munin/plugins
-----------------------------------------------------------

Greez BeNe