Howto install puppet Master and client in ubuntu

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Puppet is a tool to manage the configuration of Unix-like systems declaratively. The developer provides Puppet templates to describe parts of the system, and, when these templates are deployed, the runtime puts the managed systems into the declared state.

Puppet consists of a custom declarative language to describe system configuration, distributed using the client–server paradigm (using a REST API), and a library to realize the configuration. The resource abstraction layer enables administrators to describe the configuration in high-level terms, such as users, services and packages.
Built to be cross-platform, it works on most Linux operating systems (including Red Hat, CentOS, Fedora, Debian, Ubuntu, and SUSE), as well as multiple Unix systems (Solaris, BSD, Mac OS X), and has basic Microsoft Windows support. It is a model driven solution that requires no coding knowledge to use.

Suppose we   have  2  machines:
Master puppet  with  IP 192.168.58.153 and  hostname  : puppetmaster
Puppet client  with   IP  192.168.58.150 and  hostname : puppetclient

Now  add  these 2 lines to  /etc/hosts on both  machines

192.168.58.150 puppetclient.example.com puppetclient
192.168.58.153 puppetmaster.example.com puppetmaster

save and  exit

Install Puppet  packages (Client and Master server) :

• Client

sudo apt-get   install puppet

• Master  server

apt-get install puppet puppetmaster

Now Define  the manifest on The  server

view  /etc/puppet/manifests/site.pp

{codecitation}package {

‘apache2′:

ensure => installed

}

service {

‘apache2′:

ensure => true,

enable => true,

require => Package['apache2']

}

package {

‘vim’:

ensure => installed

}

# Create “/tmp/testfile” if it doesn’t exist.

class test_class {

file { “/tmp/testfile”:

ensure => present,

mode   => 600,

owner  => root,

group  => root

}

}

# tell puppet on which client to run the class

node puppetclient {

include test_class

}

{/codecitation}

From  this  configuration the pupprtmaster  will   deploy   the  installation of apache  and  will  create /tmp/testfile with  the  above  ownership.
Now start  the  Puppet master:

 sudo /etc/init.d/puppetmaster start

Define  the  Server  in the  Puppet  Client  :
edit   /etc/puppet/puppetd.conf and  add

{codecitation}[puppetd]

server = puppetmaster.example.com

# Make sure all log messages are sent to the right directory

# This directory must be writable by the puppet user

logdir=/var/log/puppet

vardir=/var/lib/puppet

rundir=/var/run

{/codecitation}

root@puppetclient:~# puppetd –server puppetmaster.example.com –waitforcert 60 –test
warning: peer certificate won’t be verified in this SSL session
warning: peer certificate won’t be verified in this SSL session
info: Creating a new SSL certificate request for puppetclient.example.com
info: Certificate Request fingerprint (md5): 9E:3A:CB:C4:50:6D:42:CD:4E:EE:57:07:FB:AA:98:1B
warning: peer certificate won’t be verified in this SSL session
warning: peer certificate won’t be verified in this SSL session
warning: peer certificate won’t be verified in this SSL session

back  to The  Server and  check  who is  waiting

root@puppetmaster:~# puppetca --list

you  see  that  the  client puppetclient.example.com is  waiting
Now  Sign  the  certificaat  from the  Master with  :

sudo puppetca --sign   puppetclient.example.com

Output

notice: Signed certificate request for puppetclient.example.com

notice: Removing file Puppet::SSL::CertificateRequest puppetclient.example.com at ‘/var/lib/puppet/ssl/ca/requests/puppetclient.example.com.pem’

Now  back  to The  Client   you  will  see  this  :

info: Caching certificate for puppetclient.example.com

info: Caching catalog for puppetclient.example.com

info: Applying configuration version ’1301055447′

notice: /Stage[main]/Test_class/File[/tmp/testfile]/ensure: created

notice: Finished catalog run in 0.79 seconds

root@puppetclient:~#

Check  from the  Client  that  the  Test files  has been  created with the same  ownership  600  defined  on the Master

ls -ltr /tmp/testfile
-rw------- 1 root root 0 2011-03-25 05:17 /tmp/testfile

check if the apache is running with

ps -ef  | grep   apache2

Reload  the puppet client

#puppetd -v -o

check  now  if  apache  is  installed  and  running

ps -ef  | grep   apache2
root      6097     1  0 05:37 ?        00:00:00 /usr/sbin/apache2 -k start

Enjoy

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