====== System Monitoring with Munin ======

As part of our monitoring setup we are using [[http://munin.projects.linpro.no/|Munin]] to collect data for various metrics on our machines. The server is running on [[systems:sp1|sp1]]. The web interface is available at [[http://monitoring.php.net/munin/]]. Use your CVS account data for the authentication.

Currently the following machines are running ''munin-node'' instances:

  * [[systems:sp1|sp1]]
  * [[systems:nex1|nex1]]
  * [[systems:euk1|euk1]]
  * [[systems:euk2|euk2]]
  * [[systems:dp1|dp1]]

===== Node setup instructions =====

In order to add a machine to the monitoring one must follow these steps:

  - Install the ''munin-node'' application. Most modern UNIX-like operating systems ship with it. For boxes with CentOS, make sure that [[http://wiki.centos.org/AdditionalResources/Repositories/RPMForge|rpmforge]] is being used.
  - Allow ''sp1'' to connect to the node by adding an ''allow 66\.249\.27\.150'' line to the configuration file for ''munin-node''.
  - Depending on the machine it may be necessary to allow access to port 4949 from the outside.  Use ''iptables -I INPUT -p tcp --dport 4949 --src 66.249.27.150 -j ACCEPT'' for this.
  - Let Martin (mj) know once the node is set up so that it can be added to the server's list of clients.