Managing (Multiple) Environments With Puppet

A slide deck accompanying a presentation given at PuppetCamp Chicago 2015. This presentation discusses a few tips on managing Puppet environments, along with a discussion of some useful tools (r10k, hiera, hiera-redis)

Transcript

1. MANAGING (MULTIPLE) ENVIRONMENTS WITH PUPPET Chad Thompson Principal DevOps Engineer DHI Group Inc.
3. I wrote a book. I recorded a few videos. I have a website. http://chadthompson.me ABOUT ME certification{‘puppet’: ensure => 2014, }
5. THINGS I PROBABLY WOULDN’T DO AGAIN
6. exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } -> exec{“”: } ->
7. “LET’S MANAGE ___ WITH PUPPET AND ___ WITH SHELL SCRIPTS”
8. “LET’S HAVE SEPARATE PUPPETMASTERS PER ENVIRONMENT”
9. DEVELOPMENT QA PRODUCTION MASTER MASTER MASTER GIT REPOSITORY
10. DEVELOPMENT QA PRODUCTION GIT REPOSITORY MASTER
11. ENVIRONMENTS (Use Directory Based Environments!) 1) Configure Environments in puppet.conf 2) Create separate directories for environments [main] … environmentpath=/etc/puppet/environments
12. … AND ALL IS WELL
13. R10K! • A tool for managing environments • Allows you to add environments dynamically • Managing environments is as simple as managing source. https://github.com/puppetlabs/r10k
14. DEMO - R10K
15. BUT WHAT ABOUT DATA?
16. file{‘/opt/tomcat/webapps/myapplication.war’: ensure => file, source => “puppet:///myapplication.war, }
17. HIERA… • … is a great tool for separating ‘data’ from ‘code’. • … can be configured per environment. • … has a flexible backend system. (e.g. hiera-redis) :yaml: :datadir: '/etc/puppet/environments/%{environment}/ hieradata/'
18. DEMO: HIERA / HIERA-REDIS
19. THE PIECES IN PLACE… • r10k to manage environment configurations • hiera / hiera-redis to manage data seperation • What next?
20. ORCHESTRATING • MCollective (mco) to run commands on nodes mco puppet runonce …. • Jenkins as a ‘client’ application modify hiera variables -> execute MCollective
21. THANK YOU! http://chadthompson.me @chadothompson