3.2 KiB
Purpose: Puppet is another declarative configuration management tool that excels in system configuration and enforcement. Like Ansible, it's designed to maintain the desired state of a system's configuration but uses a client-server (master-agent) architecture by default.
!!! note "Assumptions" This document assumes you are deploying Puppet server onto Rocky Linux 9.4. Any version of RHEL/CentOS/Alma/Rocky should behave similarily.
Deployment Steps:
You will need to perform a few steps outlined in the official Puppet documentation to get a Puppet server operational. A summarized workflow is seen below:
Install Puppet Repository
Installation Scope: Puppet Server / Managed Devices
# Add Puppet Repository / Enable Puppet on YUM
sudo rpm -Uvh https://yum.puppet.com/puppet7-release-el-9.noarch.rpm
Install Puppet Server
Installation Scope: Puppet Server
# Install the Puppet Server
yum install -y puppetserver
systemctl enable --now puppetserver
# Validate Successful Deployment
exec bash
puppetserver -v
# Open Necessary Firewall Port for Agent Communication
sudo firewall-cmd --add-port=8140/tcp --permanent
sudo firewall-cmd --reload
Install Puppet Agent
Installation Scope: Puppet Server / Managed Devices
# Install Puppet Agent
sudo yum install -y puppet-agent
# Enable the Puppet Agent
sudo /opt/puppetlabs/bin/puppet resource service puppet ensure=running enable=true
# Configure Puppet Server to Connect To
puppet config set server lab-puppet-01.bunny-lab.io --section main
# Establish Secure Connection to Puppet Server
puppet ssl bootstrap
# ((On the Puppet Server))
# You will see an error stating: "Couldn't fetch certificate from CA server; you might still need to sign this agent's certificate (fedora.bunny-lab.io)."
# Run the following command (as root) on the Puppet Server to generate a certificate
puppetserver ca sign --certname fedora.bunny-lab.io
Validate Agent Functionality
At this point, you want to ensure that the device being managed by the agent is able to pull down configurations from the Puppet Server. You will know if it worked by getting a message similar to Notice: Applied catalog in X.XX seconds after running the following command:
puppet agent --test
Install PuppetDB (Onto Puppet Server)
At this point, we will install PuppetDB, which will add extra reporting and management functionality for Puppet to the Puppet server.
# Install PuppetDB
yum install -y puppetdb
# Install PuppetDB Module
puppet module install puppetlabs-puppetdb
Now we need to configure a manifest file on the Puppet Server running PuppetDB, in this case, the same exact server that runs the Puppet Server itself. Create the following file if it does not already exist:
node 'lab-puppet-01.bunny-lab.io' {
# Include the puppetdb class with custom parameters
class { 'puppetdb':
listen_address => '0.0.0.0', # Allows access from all network interfaces
}
# Configure the Puppet Server to use PuppetDB
include puppetdb::master::config
}
Finally, we want to apply the configuration changes we made:
sudo puppet agent -t