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Ramit Surana, profile picture
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Achieving CI/CD with Kubernetes

Kubernetes has evolved from Borg at Google to provide an open source platform for automating deployment, scaling, and management of containerized applications. The presentation discusses how to use Jenkins, Fabric8, and other tools to achieve continuous integration and delivery (CI/CD) with Kubernetes. It provides examples of configuring Jenkins and Fabric8 to build, test, and deploy container images to a Kubernetes cluster, illustrating an end-to-end CI/CD workflow on Kubernetes.

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Achieving CI/CD with Kubernetes Ramit Surana @ramitsurana /in/ramitsurana
Agenda • History of Kubernetes • The evolution • How google uses it ? • About Jenkins • How to configure it ? • Fabric8 • How to configure it ? • The Final Picture • Other Tools • Awesome Kubernetes • Future of Kubernetes
About Me • Open Source Guy • Contributor to Kubernetes community • Author of awesome-kubernetes • ramitsurana@gmail.com
History of kubernetes • Earlier known as Borg • Borg -> Omega -> Kubernetes • Google used MPM (Midas Package Manager) to build and deploy container images.
How Google does it?
Evolution of Kubernetes • Benefits of containerization go beyond merely enabling higher levels of utilization. • Need for an orchestration engine with capablities. • Need of a stable model,to use docker at large scale that could run on several cloud platforms.
About Jenkins • Earlier known as Hudson. • Primarily a java-based program • Leading open source CI server • Used by leading companies such as Github,Netflix,Linkedin etc.
Workflow with Docker
How to configure it ? • Find the k8s-jenkins plugin at https://github.com/jenkinsci/k ubernetes-plugin • Works using JNLP(Java Network Launch Protocol)
How to configure it ? • Running the Jenkins image docker run –rm –name jenkins – p 8080:8080 – p 50000:50000 –v /var/jenkins_home csanchez/jenkins-kubernetes
How to configure it ? • Problem • It works only one time • Because of stateless containers the data gets erased after a restart. • A better solution is to use a container to store and use data to run the jenkins container • Better Solution docker create --name jenkins-k8s csanchez/jenkins-kubernetes docker run --volumes-from jenkins-k8s -p 8080:8080 -p 50000:50000 -v /var/jenkins_home csanchez/jenkins-kubernetes
How to configure it ? • Checkout http://localhost:8080 in your browser
Behind the scenes • Jenkins image is automatically connected to the Jenkins master • Slaves are launched using JNLP • Some of the environment variables that are automatically injected: • JENKINS_URL: Jenkins web interface url • JENKINS_JNLP_URL: url for the jnlp definition of the specific slave • JENKINS_SECRET: the secret key for authentication
How to configure it? • Go to Manage Jenkins -> Configure System -> Cloud -> Kubernetes
How to configure it? • Sample Configuration file
How to configure it? • Sample Configuration file for slave pod template
How to configure it with adding new jobs ? • Sample configuration while adding a new job
Continuous Delivery with Kubernetes
Rkt by CoreOS • Container project by CoreOS • Supports ACI and pods by default • Main focus is to build containers keeping in mind the security aspect for containers.
Workflow with rkt a.k.a. rktnetes
Practical example with Kubernetes
Fabric8 • Microservices platform by RedHat Guys • Uses openshift, Jenkins and kubernetes • Contains several different apps for integrations.
Fabric8 workflow
Features • CI/CD part of fabric8: • Jenkins • Gogs • Fabric8 registry • Nexus • SonarQube
How to do it ? • Install gofabric8 on your local $PATH • Ensure that you have a running kubernetes cluster
How to do it ? • Run $ gofabric8 deploy –y
How to do it ? • Run $ gofabric8 secrets –y
How to do it ? • $ Kubectl get pods This will take a while.So try going out for a Coffee :) • In case anything fails try using $ kubectl describe pods.
How to do it ? • If everything works out fine, then you should see • Try using Kubernetes dashboard for the same and fabric8 console to see your results.
How to do it ? • Kubernetes Dashboard • Fabric8 console
Behind deploying Fabric8
The Final Picture
Other Tools • TeamCity • Codeship • Travis CI • Circle CI • Drone.io • Semaphore and many more
Awesome-Kubernetes • Official list for the Kubernetes Community • Awesome collection of resources of kubernetes. • Find articles, blogs, videos, conferences and much more. • Find out more at: http://github.com/ramitsurana/awe some-kubernetes
Future of Kubernetes • Helm • Kubernetes Chart • Minikube • Kops • Kubedash • Persistent Storage • Use of Stateful Containers And many more...
Got any Questions ?
Thank You Happy Birthday Kubernetes ! May you live a thousand years old !