Docker and DevOps - Why it matters
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The document discusses the significance of DevOps and the use of Linux containers (Docker) in improving the relationship between development and operations teams to enhance collaboration, automation, and application performance. It highlights the benefits of containers in terms of deployment flexibility, operational efficiency, and faster application delivery, while addressing misconceptions about containers. Additionally, it introduces OpenShift v3 as a platform that integrates Docker, facilitating container orchestration and deployment at scale.
Docker and DevOps - Why it matters
- 1. 1 Jeremy Brown Docker and DevOps Why it matters Jeremy Brown Head of Middleware UK&I, Red Hat [email protected] @tenfourty
- 2. 2 Jeremy Brown Agenda ● DevOps ● Linux Containers AKA Docker ● OpenShift V3
- 3. 3 Jeremy Brown In the beginning...
- 5. 5 Jeremy Brown Traditional relationship between Dev and Ops ● Communication between teams is non existent as they are in different silos. ● Developers wait weeks for a testing environment ● Developers develop on one platform and deployment to another ● Code is not in version control, so rollback is almost impossible ● Code breaks in prod as testing and prod environments do not look the same ( The blame game )
- 6. 6 Jeremy Brown Traditional relationship between Dev and Ops ● Operations does not understand how to install and run the application neither does the developer ● Developers have no clue about the actual load they will face in a real production environment ● Let's be honest. This sucks!
- 7. 7 Jeremy Brown I pushed my code why is it not in prod? Do you have a ticket?
- 8. Let there be DevOps!
- 9. DevOps integrates developers and operations teams in order to improve collaboration and productivity by automating infrastructure, automating workflows and continuously measuring application performance. Key concepts: ●Small changes -> Less Risk ●Fail fast and recover vs. Never fail ●Culture change: Acceptance of failure
- 13. Linux Containers AKA Docker!
- 14. Linux Containers AKA Docker!
- 15. Linux Containers AKA Docker!
- 16. 16 Jeremy Brown WHAT ARE LINUX CONTAINERS? Software packaging concept that typically includes an application and all of its runtime dependencies. ● Easy to deploy and portable across host systems ● Isolates applications on a host operating system ● In RHEL, this is done through: ● Control Groups (cgroups) ● kernel namespaces ● SELinux, sVirt, iptables ● Docker HOST OS SERVER CONTAINER LIBS APP
- 17. 17 Jeremy Brown WHAT ARE LINUX CONTAINERS? Software packaging concept that typically includes an application and all of its runtime dependencies. ● Easy to deploy and portable across host systems ● Isolates applications on a host operating system ● In RHEL, this is done through: ● Control Groups (cgroups) ● kernel namespaces ● SELinux, sVirt, iptables ● Docker HOST OS SERVER CONTAINER LIBS APP Dockah Dockah Dockah!!!
- 18. 18 Jeremy Brown “Everything at Google, from Search to Gmail, is packaged and run in a Linux container.”1 - Eric Brewer, VP of Infrastructure, Google SOME OF THE MOST ADVANCED INFRASTRUCTURES RUN ON CONTAINERS 1 Source: http://googlecloudplatform.blogspot.com/2014/06/an-update-on-container-support-on-google-cloud-platform.html
- 19. 19 Jeremy Brown APPLICATION DELIVERY VIA CONTAINERS
- 20. 20 Jeremy Brown MANY SEE CONTAINERS AS THE UTOPIA OF APPLICATION DELIVERY Provide app high availability Consolidate servers Lower deployment costs Streamline dev and test Reduce effort to deploy apps Deploy apps faster 0 0.1 0.2 0.3 0.4 0.5 0.6 24% 25% 30% 38% 51% 54% % of respondents Source: TechValidate survey of 79 IT professionals “What top benefits do you see with containers?”
- 21. 21 Jeremy Brown BENEFITS OF CONTAINERS DEPLOYMENT FLEXIBILITY FASTER APP DELIVERY OPERATIONAL EFFICIENCY LOWERED DEPLOYMENT COSTS Containers transform the way you deliver applications to accelerate innovation.
- 22. 22 Jeremy Brown TOP 5 FACTS ABOUT CONTAINERS Containers are not new. Containers do not equal virtualization. Containers are not universally portable. Containers do not contain. Containers are enterprise-ready. 1 2 3 4 5
- 23. OpenShift
- 24. OPENSHIFT V3 INTEGRATES DOCKER ● Multi-version packaging format and isolation ● Simplified container API (Docker libcontainer) ● Easy to create (Dockerfile) ● Atomic deployment (Docker images) ● Large ecosystem (Docker Hub)
- 25. 25 ● Container orchestration at scale ● Wiring of multi-container, multi-host application topologies ● Scheduling / placement ● Manage container health OPENSHIFT V3 BUILT ON KUBERNETES
- 26. Sebastian Faulhaber ([email protected])26 WITH DEVOPS POWERED BY OPENSHIFT… IDEA CODE PRODUCTION IN MINUTES / HOURS / DAYS INSTEAD OF WEEKS / MONTHS / YEARS