Puppet

Introduction

Links

Puppet-daemons:

• Client: puppetd (call with -t and -d option to see what it does)
• Server: puppetmasterd

Puppet installation

• see RD-Computefarm-Checklist before starting
• Puppet-Server: puppet.klu.infineon.com (this is a alias that points to kluls231.klu.infineon.com)
• Puppet-rpms:
  • puppet-server-0.23.2-1.el4 (Server package)
  • puppet-0.23.2-1.el4 (client package)
• The client rpm automatically tries to contact the server with the name puppet.<local-domain>

Puppet configuration

Configuration directories and files

(Stored in svn,http://svn.klu.infineon.com/repos/AdminToolKit/trunk/puppet ):

• /etc/puppet:
  • facts (fact definiton, e.g. sitename, which can be used in the rules afterwards)
  • manifests (definitions and rules,...)
  • ssl
  • fileserver.conf (defining where files are served from and to whom)
• /var/lib/puppet: (place where the puppet-files are stored)
  • <site> (Site specific files, place defined in fileserver.conf)
    • <site>/push
    • <site>/static

Some configuration files with short describtion

To get a feeling for the language:

/etc/puppet/manifests/site.pp (read by the puppetmaster to find out what do to for the site)

#import custom facts
file { $factdir: source => "puppet://$servername/facts", recurse => true }

# import the functions
import "functions.pp"

# import site defenitions
import "sitedef.pp"

# import all of the server classes
import "classes/*"

# Common settings
import "common.pp"

#  vim: set syntax=puppet

/etc/puppet/fileserver.conf:

# This file consists of arbitrarily named sections/modules
# defining where files are served from and to whom

# Define a section 'files'
# Adapt the allow/deny settings to your needs. Order
# for allow/deny does not matter, allow always takes precedence
# over deny

[klu]
path /var/lib/puppet/files/klu     # Files specially for the klu site
allow *.klu.infineon.com           # only machines in KLU see them

[kia]                              # same for the other sites
...
[facts]                            # place for the fact definitions
path /etc/puppet/facts
allow *.infineon.com

/etc/puppet/facts (example fact definiton)

# returns site name to facter
# ohad.levy@infineon.com
# Solaris returns the LDAP domain instead of DNS domain
Facter.add("sitename") do
        setcode do
                %x{hostname | cut -c 1-3}.chomp
        end
end

Useful links

Autogenerate puppet pp files.

http://cft.et.redhat.com/