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Puppet module for munin monitoring
Puppet Perl Shell Ruby
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== Munin ==

Munin is a performance monitoring system which creates nice RRD graphs and has
a very easy plugin interface. The munin homepage is

To use this module, follow these directions:

1. Install the "common" module -- the munin module depends on functions that are
   defined and installed via the common module, see README.common for how to do this

2. You will need storedconfigs enabled in your puppet setup, to do that you need to
   add a line to your puppet.conf in your [puppetmasterd] section which says:

   You may wish to immediately setup a mysql/pgsql database for your storedconfigs, as
   the default method uses sqlite, and is not very efficient, to do that you need lines
   such as the following below the storeconfigs=true line (adjust as needed):


3. Install the "munin" module:

   a. Your modules directory will need all the files included in this repository placed 
      under a directory called "munin"

   b. add the following line to your modules.pp:
      import "munin" 

      (NOTE: if you have followed the directions in README.common then you will have import 
      "modules.pp" in your site.pp, if you do not have that, then you will need to add the 
      import line to your site.pp)

   c. you will also need to create the following empty directories:

      mkdir /etc/puppet/modules/munin/files/empty
      mkdir /etc/puppet/modules/munin/files/modules_dir
      mkdir -p /etc/puppet/modules/munin/files/nodes/modules_dir
      mkdir -p /etc/puppet/modules/munin/files/plugins/modules_dir

   d. Add to the top of your site.pp a variable which indicates what IP should be allowed to 
      connect to your individual munin-nodes (this is typically your main munin host's IP):

      $munin_allow = ''
      If you want to define more than one host, you can seperate them by colon:

      $munin_allow = ''

   e. In the node definition in your site.pp for your main munin host, add the following:

      include munin::host
   f. On each node that will gather munin statistics, add this line to that node's entry 
      in site.pp (you may want to also add this to your main munin host):
      include munin::client

   g. If there are particular munin plugins you want to enable or configure, you define them
      in the node definition, like follows:

      # Enable monitoring of disk stats in bytes
      munin::plugin { df_abs: }

      # Use a non-standard plugin path to use custom plugins
      munin::plugin { "spamassassin":
         ensure => "spamassassin",
         script_path => "/usr/local/share/munin-plugins",

      # Use a special config to pass parameters to the plugin
      munin::plugin {
         [ "apache_accesses", "apache_processes", "apache_volume" ]:
            ensure => present,
            config => "env.url"

   h. If you have Linux-Vservers configured, you will likely have multiple munin-node processes
      competing for the default port 4949, for those nodes, set an alternate port for munin-node
      to run on by putting something similar to the following in the node definition:

      $munin_port = 4948

   i. If you'd like to do cgi graphing, please note the following page:
      For CentOS this is enabled in the default header config

   j. Per default (on CentOS) munin will send warnings and critical messages to root
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