Configuring a Puppet Server lab

Note

This all started from a failed attempt to follow PluralSight’s Puppet sysadmin course using Apache and Passenger. Ran into dependency issues which Ben Piper provided solutions for on his github page but beyond that continued to run into issues with the lab environment. I was more interested in getting a test environment up and running so I could start rapid prototyping our Puppet workflow, not infrastructure as that is already in place.

Anyways, i’ll be using CentOS 7 minimal bare installs and build a very minimum configuration to get the following up and running.

Puppet Master
DNS Server
Wiki Server

Pre-Puppet Configuration Tasks (All Servers)

Configure Network

    sudo vi /etc/sysconfig/network-scripts/name-of-youractiveinterface

Find and replace onboot=no to onboot=yes Restart network service sudo systemctl restart network Confirm you are getting network connectivity. nmcli or ping google.com

Add dns entries

Add all hosts to /etc/hosts on each server if you do not have a dns server configured.

Install Updates

sudo yum update -y

NTP and date/time configuration.

sudo yum -y install ntp
sudo timedatectl set-timezone "America/Chicago"

sudo systemctl start ntpd

. Configure host names and dns entries as we do not have a primary dns server(yet).

On both: Configure SELinux
On both: Configure firewalld settings.
Add puppet repos

Puppet Installation

On the master:

    sudo rpm -ivh https://yum.puppetlabs.com/puppetlabs-release-pc1-el-7.noarch.rpm
    sudo yum -y install puppetserver

Configure memory allocation for puppet master:

    vi /etc/sysconfig/puppetserver

Find and modify -> JAVA_ARGS="-Xms3g -Xmx3g"

Start and enable Puppet Server

    sudo systemctl start puppetserver
    sudo systemctl enable puppetserver

Installing Agents

    sudo rpm -ivh https://yum.puppetlabs.com/puppetlabs-release-pc1-el-7.noarch.rpm
    sudo yum -y install puppet-agent
    
    sudo /opt/puppetlabs/bin/puppet resource service puppet ensure=running enable=true

Cert Signing From the Agents:

    sudo /opt/puppetlabs/bin/puppet agent -t server="puppet01.test.local"

From the Master:

    sudo /opt/puppetlabs/bin/puppet cert list
    sudo /opt/puppetlabs/bin/puppet cert sign wiki01.test.local