Ticket ID #180 ‐ Create Node Resources and Develop Basic Module - GriffinKat/group-a GitHub Wiki

Creating a Puppet Module

• Step 1- Create the following directories, all under /etc/puppetlabs/code/modules on the management server.

  • 1. Use the following command to get to the specified location:

       cd /etc/puppetlabs/code/modules

       

  • 2. Use the mkdir command to create the following directories:

       sudo mkdir sudo

       

       Within the sudo directory we will now create 3 subdirectories. Follow the commands below.

       Use the cd sudo command to change directory.

       

       Use the following command to create the three subdirectories.

       sudo mkdir {files,templates,manifests}

       

  • 3. Now, we create the file sudo/manifests/init.pp. Every module must have this basic structure.

       sudo touch manifests/init.pp

       

  • 4. Edit the init.pp file so that it contains the following:

       class sudo {
         package { 'sudo':
         ensure => present,
         }
       
         file { '/etc/sudoers':
           owner   => 'root',
           group   => 'root',
           mode    => '0440',
           source  => 'puppet:///modules/sudo/etc/sudoers',
           require => Package['sudo'],
         }
       }
       
       
       

  • 5. Use the following command to edit the init.pp file and paste the above code.

       sudo nano manifests/init.pp

       

  • 6. Obtain a verified copy of your sudoers file and copy it to:

       /etc/puppetlabs/code/modules/sudo/files/etc/sudoers

       Use the command below to copy the sudoers file from /etc directory into the specified directory.

       sudo cp /etc/sudoers /etc/puppetlabs/code/modules/sudo/files/etc/sudoers

       NOTE: First make the /etc directory in the files directory. Use command sudo mkdir -p /etc/puppetlabs/code/modules/sudo/files/etc

       Verify that the file has been copied by running the command: ls /etc/puppetlabs/code/modules/sudo/files/etc/

       

Troubleshooting done while applying configuration to node (Database server)

1. Syntax error in the site.pp file. The screenshot of the error while testing the configuration on node.

   

   Troubleshooting steps- The include sudo directive was written in the package block, removed it from there.

   

2. Permission denied to read the sudoers file in the module.

   

   Troubleshooting steps- Changed the ownership to the Puppet user and group using the following command and restarting the puppet server.

   sudo chown -R puppet:puppet /etc/puppetlabs/code/modules/sudo/files/

   sudo systemctl restart puppetserver

   

Screenshot of successful application of the module to the node