Puppet

Tutorial from the Puppet vm training download
Installing on Ubuntu systems
Installing on yum based systems
https://docs.puppet.com/puppet/4.4/reference/quick_start_helloworld.html
https://docs.puppet.com/guides/troubleshooting.html
http://www.thegeekstuff.com/2015/07/puppet-configuration-examples/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+TheGeekStuff+%28The+Geek+Stuff%29 - Examples
Extracts from Digitalocean tutorial - using puppet on Ubuntu 14.04
Links for configuring Apache