Skip to content

Latest commit

 

History

History
88 lines (52 loc) · 4.12 KB

Jenkins_Kubernetes.md

File metadata and controls

88 lines (52 loc) · 4.12 KB
Raw

Logo

Jenkins With Kubernetes

In here we will see how to containerized Jenkins is setuped on Top of a Kubernetes Cluster.

Content

  1. Prerequisites
  2. Kubernetes Setup
  3. Jenkins

Prerequisites

Docker
Virtual Machine
Minikube
Kubernetes CLI

Kubernetes Setup

The Kubernetes is an open source containers orchestration tool,i.e ability to deploy, scale, and operate with multiple containers from one place.

Setting up Kubernetes:

To run Kubernetes first you need to setup a VM usng the following command

$ sudo apt install virtualbox virtualbox-ext-pack

After this need to install Minikube which runs Kubernetes in your local machine.

$ curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.31.0/minikube-linux-amd64 && chmod +x  minikube && sudo cp minikube /usr/local/bin/ && rm minikube
$ minikube start

Once your setuped with minikube need to install kubectl which is the Kubernetes CLI:

$ sudo apt-get update && sudo apt-get install -y apt-transport-https
$ curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
$ echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
$ sudo apt-get update
$ sudo apt-get install -y kubectl

Thats it! Now you have setuped Kubernetes.

Jenkins Setup

Create a Dockerfile for jenkins and build the image.The first command enters the into the minikube VM.

$ eval $(minikube docker-env)
$ docker build -t gep/my-jenkins-image:1.0 .

As we already have the Kubernetes cluster in place and the Jenkins image, you can deploy this image on top of the cluster

Kubernetes deployment is presented in a YAML format text file with all the configuration params that might be needed to run your application.

Create a jenkins-deployment.yaml file, Let’s install the just created deployment into our Kubernetes cluster by using the specified command:

 $ kubectl apply -f jenkins-deployment.yaml

In addition to pod creation via deployment, we need to create the Jenkins service. The reason behind this is simple. To interact with a pod inside the Kubernetes cluster

Create a jenkins-service.yaml file, you can run it inside the Kubernetes container by using this command:

 $ kubectl create -f jenkins-service.yaml

Now we can open the Minikube Dashboard using:

 $ minikube dashboard

you can able to see browser opens with the minikube Kubernetes Dashboard with Jenkins Pod.

Image1

Now to open the Jenkins that is setuped using kubernetes find the services in kubernetes using command:

 $ kubectl get service

you will find the jenkins service that you have created, get the port number in which the service is running

Image2

Next to get IP of the Kubernetes cluster using:

  $ minikube ip

Thats it! now you got the IP and Port of the Kubernetes cluster in which the Jenkins is running(example:http://192.168.99.100:30886): If you open this in browser you will see the jenkins:

Image3