Infrastructure As Code PGHTechFest 2014

Transcript

1. INFRASTRUCTURE AS CODE AND ITS RELATIONSHIP TO DEVOPS
2. •  What is DevOps •  Who is a DevOp? •  Benefits of DevOps •  What is Infrastructure as Code •  Benefits of Infrastructure as Code •  Tools
3. WHAT IS DEVOPS
5. “DevOps is a cultural and professional movement. Period. That’s it… There’s no technology, you can’t patent ‘devops’.” -- Adam Jacobs Velocity 2010
6. BREAK DOWN THE WALL
7. COLLABORATION “Devops means giving a shit about your job enough to not pass the buck. Devops means giving a shit about your job enough to want to learn all the parts and not just your little world.” -- John Vincent
8. CALMS Culture Automation Learning Measurement Sharing
9. WHO IS DEVOPS
10. BUT I HAVE DEVOPS IN MY TITLE •  Where are the Devs •  Where are the Ops •  Where is QA •  Do you collaborate ?
11. http://2.bp.blogspot.com/-WTVmajFWJA0/TiB1dMGnhVI/AAAAAAAAFW4/xfjJh8y3Zf0/s1600/Robot_unicorn_rider__Batman_by_Rosewine.jpg
12. http://www.thecutereport.com
13. http://en.wikipedia.org/wiki/DevOps
14. “Ah, but “devops” does not mean the same PERSON has to do dev and ops, rather the barriers between dev and ops are eliminated” -- Cornelia Davis
15. INFRASTRUCTURE AS CODE
16. INFRASTRUCTURE CONFIGURATION 1.  Dev: I need a server with X,Y,andZ 2.  Ops: Get server or VM a.  Log in b.  Install packages c.  GOTO b d.  Document ? Maybe 3.  Deploy 4.  Ooops we forgot the super duper package 5.  Back to 2a
17. THE BLAME GAME •  No documentation •  Not repeatable •  What version of packages were installed •  What version of the config files were installed •  Does it match the current application ? •  Was it done right •  How portable is it ?
18. A BETTER WAY •  Software Defined Infrastructure
19. http://kuwaitiful.com/news/wrong-name-tag/
20. “models your infrastructure in code, by breaking it down into components that interact with each other. In this context, Infrastructure isn’t anything physical, ...” --Jens Segers
21. “I’m a system admin, I don’t write code” --Soon to be Unemployed SysAdmin Pete Cheslock DevOps Days Pittsburgh 2014
23. THE BENEFITS
24. •  Makes Ops a 1st class citizen •  Standard language for Devs, Ops and QA •  Versioning •  Repeatable •  Documented •  Testable by all
25. TOOLS
26. I AM A HERETIC •  Tools don’t matter •  They all get the job done •  Pick one
27. VS
28. http://blog.sciencelogic.com/agent-vs-agentless-monitoring/10/2011 Ansible Chef Puppet Salt Agentless Agent Agent Agent Playbooks Cookbooks / Resipe Modules / Manifests Modules / States YAML DSL Ruby DSL Limited DSL YAML Python Ruby Ruby Python
30. VIRTUAL OR PHYSICAL
31. ANSIBLE --- - hosts: webservers vars: http_port: 80 max_clients: 200 remote_user: root tasks: - name: ensure apache is at the latest version yum: pkg=httpd state=latest - name: write the apache config file template: src=/srv/httpd.j2 dest=/etc/httpd.conf notify: - restart apache - name: ensure apache is running service: name=httpd state=started handlers: - name: restart apache service: name=httpd state=restarted
32. CHEF package 'nginx' do action :install end cookbook_file '/etc/nginx/nginx.conf' do source 'nginx.conf' mode '0644’ end service 'nginx' do action [:start, :enable] end
33. WHAT DO WE WANT?
34. REFERENCES •  http://getchef.com •  http://puppetlabs.com •  http://saltstack.com •  http://ansible.com •  http://atpras.blogspot.com/2014/02/ansible-hello- world.html •  http://sdarchitect.wordpress.com/2012/12/13/ infrastructure-as-code/ •  http://en.wikipedia.org/wiki/DevOps •  http://jenssegers.be/blog/44/infrastructure-as-code