DEVOPS For PHP Developers

Talk on Devops given at London PHP Conference

Transcript

1. DEVOPS for PHP Developers https://www.flickr.com/photos/inedito/2963474098 PHP UK Conference London 2015 - Jeremy Quinton
2. • Working on the web with PHP since 2003 • Some operations work • Open Source Enthusiast • Big Fan of DEVOPS cultural and professional movement About
4. Ideology The set of ideas and beliefs of a group… http://www.merriam-webster.com/dictionary/ideology
5. Complaints and Confusion https://www.flickr.com/photos/jkfjellestad/15524719680
7. Ideas or set of Ideals (New and Old) Which has lead to a common set of practices and patterns DEVOPS (at a high level) Goal of my talk today is to share some of these ideas, practices and patterns
8. Common DEVOPS definition - CAMS Damon Edwards and John Willis • Culture • Automation • Measurement • Sharing
10. The 2014 State of DEVOPS Report The largest and most comprehensive DEVOPS study to date https://www.flickr.com/photos/80497449@N04/10012162166 The first scientific study of the relationship between Organisational performance, IT performance, DEVOPS practices.
11. The state of DEVOPS 2014 - http://puppetlabs.com/sites/default/files/2014-state-of-devops-report.pdf • Strong IT performance is a competitive advantage • Strong correlation between DEVOPS practices and IT performance
12. http://en.wikipedia.org/wiki/Gene_Kim http://en.wikipedia.org/wiki/Gene_Kim#mediaviewer/File:Gene_Kim.jpg Gene Kim “The best just keep getting better and accelerating away from the herd.” Author of the Phoenix project A Novel About IT, DevOps, and Helping Your Business Win
13. “DEVOPS means [caring] about your job enough to not pass the buck. DEVOPS means [caring] about your job enough to want to learn all the parts and not just your little world. ! Developers need to understand infrastructure. Operations people need to understand code. People need to work with each other and not just occupy space next to each other.” –- John E. Vincent ! https://twitter.com/lusis
14. Developer Mindset • How are we going to deploy our code? • How are we going to monitor the application in a production environment? • Is this code going to work in a multi node environment? 
 e.g. sessions, caching etc • Software is a thing that exists after it has been written
15. Break down the silos. But why? https://www.flickr.com/photos/docsearls/5500714140
16. Development Developers QA Testers Operations Sys Admins Network Engineers DBA Development teams strive for change Operations teams strive for stability misalignment leads to conflict Measured on things like features Measured on things like uptime
17. • Ideally no isolated silos exist in the software delivery process. Breaking Down the Silos
18. IF WE COULD JUST CREATE A DEVOPS TEAM THAT WOULD BE GREAT
19. • DEVOPS proposes, instead, strategies to create better collaboration between functional silos or doing away with functional silos altogether and creating cross functional teams. better • DEVOPS movement addresses the dysfunction that results from organisations composed of functional silos. Breaking Down the Silos • DEVOPS proposes shared responsibilities and incentives across teams.
20. DEVOPS is Cultural shift https://www.flickr.com/photos/philliecasablanca/3344142642
21. “Organisational culture is the behaviour of humans within an organisation and the meaning that people attach to those behaviours.” DEVOPS is Cultural shift
22. - http://puppetlabs.com/sites/default/files/2014-state-of-devops-report.pdf The state of DEVOPS 2014 Typology of Organisational Culture (Westrum, 2004) Pathological Power-oriented Bureaucratic Rule-oriented Generative Performance-oriented
23. Pathological - Power-oriented
24. Bureaucratic Rule-oriented https://www.flickr.com/photos/unsureshot/268754069
25. Generative - Performance-oriented https://www.flickr.com/photos/gfreeman23/8732672635
26. DEVOPS identifies that organisational culture is important and that this culture is crucial to whether or not DEVOPS will succeed within any given organisation. Takeaway
27. Increasing collaboration between dev and ops “What is remarkable is that even though agile actively seeks collaboration from all its stakeholders, most agile projects did not extend themselves toward the operations people.” ! ! - Patrick Debois.
28. Agile Development Team Waterfall Operations Team Increasing collaboration between dev and ops Scrumfall
29. Change your definition of done “At the end of each sprint, we must have working and shippable code…” ! “demonstrated in an environment that resembles production”
30. Practices • Make environments available early in the development process. https://www.vagrantup.com Development environments made easy. Create and configure lightweight, reproducible, and portable development environments. Build, Ship and Run Any App, Anywhere ! Docker - An open platform for distributed applications for developers and sysadmins. OR
31. Chef Puppet Ansible Salt Configuration management tools (Infrastructure as code) • These tools enable more transparency at the infrastructure level. • Also get developers and operations people collaborating early in the software delivery process Amazon Rackspace Digital Ocean Cloud providers Practices • Make sure devs and ops build code and environments at the same time.
32. Packer is a tool for creating identical machine images for multiple platforms from a single source configuration. Packer https://www.packer.io • Create a common dev,qa, production environment creation process. Practices
33. • Collaboration between development and operations starts long before the deployment of software and well afterwards. Practices • Get Operations and Developers sitting together.
34. Cycle Time • How long does it take you to go from code committed to getting that code running in production? • Asked in another way if you had a critical bug fix and it was one line of code how long does it take you to get that to production.
35. “What businesses really want of us as software developers is that we allow them to have an idea, get the idea into the hands of our users, figure out if the idea works, and react to the understanding that we can gain from this experiment.” Cycle Time https://leanpub.com/buildqualityin
36. “High performing organisations deploy code 30 times more often, and 8000 times faster than their peers, deploying multiple times a day, versus an average of once a month.” Key Finding - DEVOPS 2013 Report “Have 50% fewer failures and restore service 12 times faster than their peers.” https://puppetlabs.com/wp-content/uploads/2013/03/2013-state-of-devops-report.pdf
37. Some problems dev and ops teams face • Cycle time is measured in weeks or months. release • Problems with deployment. • Various bottle necks. Key goals of DEVOPS is to increase flow, reduce cycle time,
 shorten the feedback loop.
38. Continuous Delivery Read this Book
39. Continuous Delivery Design practice used in software development to automate and improve the process of software delivery. Techniques such as automated testing, continuous integration and continuous deployment Allow software to be developed to a high standard and easily packaged and deployed to environments, resulting in the ability to rapidly, reliably and repeatedly push out enhancements and bug fixes to customers at low risk and with minimal manual overhead. http://en.wikipedia.org/wiki/Continuous_delivery
40. Key Goals of Continuous Delivery • Software is always in a releasable state throughout its lifecycle. • The only way to categorically prove software is production ready is to deploy it production.
41. Devops for developers - Michael Heuttermann Available functionality Time Big releases Small releases
42. Benefits of deploying more frequently • Smaller changes make it easier to identify problems • Risk of deployment is reduced • The process of fixing problems becomes optimised Devops for developers - Michael Heuttermann
43. Deployment becomes a non event
44. Continuous Integration • Create quality at the source - helps build trust • Fix broken builds immediately - don’t block other developers • Keep your builds fast - get feedback sooner
45. Automated Acceptance Testing https://www.flickr.com/photos/wynandvanpoortvliet/3562677155
46. Automated acceptance testing “Automated testing turns fear into boredom” - Eran messeri google. • Automated acceptance testing of functional and non functional requirements. • RSpec tests for your servers configured by Puppet, Chef or anything else. https://github.com/serverspec/serverspec
47. A deployment pipeline is automated implementation of your applications build, deploy, test and release process. Deployment pipeline
48. Deployment pipeline Delivery Team Version Control Check in Feedback Build & unit tests Trigger Automated Acceptance Tests Trigger Feedback Release Approval
49. • Collaboration • Feedback • Teams can deploy and release any version of their software to any environment at will through a fully automated process. Key objectives of Deployment pipeline - Continuous Delivery: Reliable Software Releases Through Build, Test, and Deployment Automation by Jez Humble and David Farley
50. Tools available to build deployment pipelines Travis CI Jenkins Testing tools PHPunit phpspec Behat BAMBOO Code Standard Quality Tools Continous Integration Servers Phing Build Tools PHP CodeSniffer - https://github.com/squizlabs/PHP_CodeSniffer PHP Mess detector http://phpmd.org/ PHPLoc - https://github.com/sebastianbergmann/phploc PHPCI Codeception PHP Documentor -http://www.phpdoc.org/
51. Automated Deployments Think of deployment as a two step process • Select environment where we want our software to go. • Push a button to release the software to that environment. Tools Capistrano Rocketeer Deployer - Continuous Delivery: Reliable Software Releases Through Build, Test, and Deployment Automation by Jez Humble and David Farley
52. Measurement
53. Monitoring • If you are releasing often you want fast feedback. • Adding monitoring to the definition of done for new software features.
54. Measurement • You can’t improve what you can’t measure. • Measurements are shared not only between developers and ops people 
 but with the entire organisation.
55. Tools Statsd Logstash + ElasticSearch + Kibana Log files from production - Measurement and monitoring Collectd Graphite Grafana Cacti Monitoring and Altering Nagios Sensu Ganglia Sentry Graylog Application Metrics Splunk
56. Sharing with operations https://www.flickr.com/photos/clappstar/2773208127 Sharing
57. Sharing - Pain • Developers take more ownership and responsibility for their code. • Developers on call for production issues.
58. Blameless post mortems Blameless Post Mortems
59. Everything is in source control https://twitter.com/jclermont/status/557202948703666177
60. • Code and scripts for building the application. Things that should be in version control for your application • Code and scripts for testing the application. • Code and scripts for deploying the application. • Code and scripts for building environments for the application.
61. Summary • Why we need DEVOPS • Breaking down Silos • Organisational culture • Increasing Collaboration between Developers and Operations • Cycle Time and Continuous Delivery • Measurement and monitoring • Sharing
62. Patrick Debois https://twitter.com/patrickdebois/status/539073067738468352
63. Feedback https://joind.in/talk/view/13368
64. Good DEVOPS Resources https://leanpub.com/buildqualityin Attend a DEVOPS day conference http://www.devopsdays.org/ http://foodfightshow.org/ Podcasts http://devopscafe.org/ http://amzn.to/1vD8gUi http://amzn.to/1zMaAc7 http://amzn.to/1AiZMpy http://amzn.to/1brnEZI
65. Questions?