Getting To Know K8s | Lab #7: Continuous Deployment with Jenkins and Kubernetes

Introduction

In the previous lab, we went through how to deploy Jenkins and integrate it with your Kubernetes cluster.

And in this lab, we will setup an example continuous deployment pipeline with Jenkins, using the same Hugo site that we have used in previous labs.

The four main stages of the pipeline that we will create are:

• Build: Build the Hugo site
• Test: Test the Hugo site to confirm there are no broken links
• Push: Create a new Docker image with the Hugo site and push it to your Docker Hub account
• Deploy: Trigger a rolling update to the new Docker image in your Kubernetes cluster

The configuration of the pipeline will be defined in a Jenkinsfile, which will be stored in your GitHub repository for the Hugo site.

And after configuring the GitHub plugin in Jenkins, the pipeline will be automatically triggered at every commit.

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Getting To Know K8s | Lab #6: Integrating Jenkins and Kubernetes

Introduction

In this lab, we will look at integrating Jenkins with your Kubernetes cluster. Jenkins is an open source automation server which is commonly used as a continuous integration and continuous delivery application.

Integrating Jenkins with Kubernetes using the Kubernetes plugin provides several key benefits. No longer are you required to maintain a static pool of Jenkins slaves and have those resources sitting idle when no jobs are being run.

The Kubernetes plugin will orchestrate the creation and tear-down of Jenkins slaves when jobs are being run. This makes things easier to manage, optimizes your resource usage and makes it possible to share resources with an existing Kubernetes cluster running other workloads.

In this first post related to Jenkins, we will focus on creating the Jenkins Deployment and Service. And we will be using a Persistent Volume to store the Jenkins configuration in a dedicated AWS EBS volume, which will preserve that data in the event of a Pod failure.

We will then install and configure the Kubernetes plugin and then run a test job to confirm that the integration was successful.

Finally, you will see how to create your own custom Docker image for Jenkins, with the Kubernetes integration incorporated.

And in the next post, we will setup a example continuous deployment pipeline for the Hugo site we have used in previous posts.

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Dynamically Provisioned Jenkins Slaves in a Kubernetes Cluster on AWS

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