Puppet installation

PUPPET INSTALLATION

PUPPET INSTALLATION ON UBUNTU

Installing Puppet Master
Step 1: Run the following commands for installing Puppet Master
$ sudo apt-get update
$ sudo apt-get install wget
$ wget https://apt.puppetlabs.com/puppet-release-bionic.deb
$ sudo dpkg -i puppet-release-bionic.deb
$ sudo apt-get update

$ sudo apt-get install puppet-master
$ sudo systemctl status puppet-master.service

Add the following lines in the puppet-master configuration file
Next open port 8140 on the Puppet Master’s firewall
$ sudo nano /etc/default/puppet-master
JAVA_ARGS="-Xms512m Xmx512m" 
$ sudo systemctl restart puppet-master
$ sudo ufw allow 8140/tcp

Installing Puppet Agent

Step 2: Run the following commands for installing Puppet Agent

$ sudo apt-get update
$ sudo apt-get install wget
$ wget https://apt.puppetlabs.com/puppet-release-bionic.deb
$ sudo dpkg -i puppet-release-bionic.deb
$ sudo apt-get install puppet
$ sudo nano /etc/hosts
   add ip address of the master
$ sudo systemctl start puppet
$ sudo systemctl enable puppet


Step 3: Make changes to the hosts file which exists in /etc/hosts. And add the Puppet
Master IP address along with the name “puppet”

$ sudo nano /etc/hosts

Step 4: Create the following directory path:

$ sudo mkdir -p /etc/puppet/code/environments/production/manifests


Configuring Puppet Slave

Step 1: Add the entry for Puppet Master in /etc/hosts

Step 2: Finally start the Puppet agent by using the following command. Also, enable the
service, so that it starts when the computer starts

$ sudo systemctl start puppet
$ sudo systemctl enable puppet


On Master

$ sudo puppet cert list

Step 2: Finally, sign the listed certificate using the following command:
$ sudo puppet cert sign --all

On master machine create /etc/puppet/code/environments/production/manifests/site.pp

node default{

package {'nginx':
ensure => installed,
}

file { '/tmp/status.txt':

content => 'installed',
mode => '0644',
}
}

Goto client machine and run the command
puppet agent --test


---Variable

node default{

package {'nginx':
ensure => installed,
}

$test = "ok"

file { '/tmp/status.txt':

content => $test,
mode => '0644',
}
}


---------------
Loops
-------------
node default{

$packages = ['apache2','mysql-server']

package {$packages:
ensure => installed,

}
}
----create user
node default{
   user { 'raman':
      ensure => present,
      uid    => '1101',
      shell  => '/bin/bash',
   }
}
--Create user with class
class user {
   user { 'test':
      ensure => present,
}
}
node default{
  class {user:}
}

---Create user with the parameter
class user_account ($username){
   user { $username:
      ensure => present,
      uid    => '1011',
      shell  => '/bin/bash',
      home   => "/home/$username",
   }
}
node default {
   class { user_account:
      username => "raman",
   }
}