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Jenkins X was first released in early 2018 and was created by Jame Strachan, the creator of the Apache Groovy language. Jenkins X is a highly integrated CI/CD platform based on Jenkins and Kubernetes implementation, which aims to solve the problem of continuous delivery of cloud native applications under the micro service architecture and simplify the whole process of development, operation and deployment of cloud native applications. With a Jenkins X command, administrators can create a Kubernetes cluster and install tools for managing applications, creating pipelines, and deploying an application to different environments.

Jenkin X is also an extensible automation server configured by plug-ins that acts as a continuous integration (CI) server, continuous deployment (CD) hub, and automated testing.

Jenkins X (also known as JX) can be easily installed on existing cloud providers (such as GKE, AKS, etc.). Or, if you are locally clustered with Kubernetes, you can also use Jenkins X. With the jx command, you can quickly deploy clusters on local or remote cloud providers such as Google Cloud Platform.

This article will teach you to complete the process of installing Jenkins X on an existing Kubernetes cluster running on Ubuntu Server 18.04.

Preparation in advance

I will demonstrate the deployment of Kubernetes clusters locally and on Google Cloud Platform (using Jenkins X). To do this, you need to:

A running instance of Ubuntu Server with Kubernetes installed.

A Google Cloud Platform account.

A user with sudo privileges.

Network connection.

Besides, it will take some time.

Let's get started!

Install Jenkins X

Installing Jenkins X on Ubuntu is easy. Download the executable binaries from the Jenkins X Github official page (https://github.com/jenkins-x/) and move them to the correct directory. To do this, log in to the server through SSH, or log in directly to the console, and at the bash prompt on the server, enter the command:

Curl-L "https://github.com/jenkins-x/jx/releases/download/$(curl-- silent" https://github.com/jenkins-x/jx/releases/latest" | sed 's#.*tag/\ (. *\)\ ". * #\ 1neighbors') / jx-linux-amd64.tar.gz" | tar xzv "jx"

The above command downloads the latest version of Jenkins X and then unzips the binaries. After the command is completed, you should see an executable file named jx in the current working directory (as shown below):

To move the Jenkins X binaries, enter the following command:

Sudo mv jx / usr/local/bin

If you choose to use a virtual machine environment to deploy a cluster, you must install it. To do this, you need to install KVM, KVM-2, or VirtualBox. To simplify the operation, we will install VirtualBox. This will install X server, but you don't need to use it.

To install VirtualBox, enter the command:

Sudo apt-get install virtualbox-y

Installation will take some time, and after the installation is complete, you will need to install minikube on Ubuntu Server (this will be our provider). To do this, download the necessary files using the following command:

Wget https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64

Use the following command to change the permissions for downloading files:

Chmod + x minikube-linux-amd64

Use the command to move (and rename) the file to the appropriate directory:

Sudo mv minikube-linux-amd64 / usr/local/bin/minikube

Using the following command, you should see that minikube has been installed:

Minikube version

The following figure shows the version number of minikube:

Jx command to deploy a cluster

Now we are going to deploy a cluster that will use minikube and VirtualBox as drivers. The command to deploy the cluster is as follows:

Jx create cluster minikube

You will be asked the following questions:

Amount of memory applied to the cluster (default is 4096)

Number of cores applied to the cluster (default is 3)

Disk size (default is 150GB)

Select driver (select from kvm, kvm2, virtualBox, none)

If you select the following options:

Memory 4096

Core 3

Disk space 20GB

VirtualBox driver

Valid commands are as follows:

Minikube start-memory 4096-cpus 3-disk-size 20GB-vm-driver virtualbox-bootstrapper=kubeadm

You can also deploy a cluster locally without using a driver. To do this, you must run the jx command through sudo, such as:

Sudo jx create cluster minikube-local-cloud-environment=true

The command will run as follows:

Minikube start-memory 4096-cpus 3-disk-size 20GB-vm-driver none-bootstrapper=kubeadm

The jx command will be responsible for extracting all necessary images and deploying the configured cluster.

Deploy to Google Cloud

Suppose you want to deploy the cluster to Google Cloud Platform, and Jenkins X can also do so. Before you can do this, you must install the gcloud application. To do this, return to the terminal window and download the source file using the following command:

Wget https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-265.0.0-linux-x86_64.tar.gz

Use the following command to extract the file:

Tar-zxf google-cloud-sdk-*

Use the following command to enter the newly created directory:

Cd google-cloud-sdk

Finally, run the installer using the command:

. / install.sh

When you are finished, update all the contents of gcloud with the following command:

Gcloud components update

Finally, you must log in to your Google Cloud Platform account with the following command:

Gcloud auth login

Copy the link to the browser, select the Google account you want to use, then copy the obtained CAPTCHA, paste it at the command prompt, and press Enter. Now that you have logged in to your Google Cloud Plartform account, you can issue the following command:

Jx create cluster gke-skip-login

When prompted, be sure to select the Google Cloud Project you want to use:

After making a selection and pressing the Enter key, you will be prompted to select an area:

Next, you will be asked about the type of Jenkins installation (choose between the Serverless Jenkins X pipeline with Tekton or the Static Jenks Server with Jenkinsfikes). Note that when using tekton, only kaniko is supported as the builder.

Then, you need to enter a name and email address for git, and then obtain the necessary API keys for your Github account. After that, the cluster will be deployed and can work for you.

This is the point of installing and using Jenkins X on an existing Kubernetes cluster. There are many other features of this tool, and it is strongly recommended that you read the official documentation:

Https://jenkins-x.io/docs/

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