In this blog, we will explore the CI/CD process using Jenkins and Ansible. We will deploy the sample java application using Ansible on the tomcat servers. At last,this process will help us in achieving continuous integration and continuous deployment for your application.

We have make the project on master node

Jenkins is a javabased program. So to install Jenkins we have to first install Java-11, then Jenkins.

Install java:

\=============================

sudo apt install default-jre -y

Install jenkins:

curl -fsSL pkg.jenkins.io/debian-stable/jenkins.io-202.. | sudo tee /usr/share/keyrings/jenkins-keyring.asc > /dev/null

echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list > /dev/null

sudo apt-get update

sudo apt-get install jenkins -y

sudo systemctl start Jenkins

Now we have to move to lab desktop to visit Jenkins official page “localhost8080”.

Jenkins set up

So here comes our Jenkins

Here Jenkins is ready to use now.

Now we have to set up Install Ansible plugins in Jenkins CI server.

we have to go to manage Jenkins.

Manage Jenkins--> plugins --> available plugins --> Search for plugin Ansible>> click on install without restart.

Now we have to configure ansible tools.

Configure ANsible tool in Jenkins

Manage Jenkins--> Configure Tools --> Scroll down to find Ansible --> Add ansible--> give name as myansible-->give path as /usr/bin

Playbook to install maven and docker

Now we are going to run the playbook

Here comes playbook running successfully

Now Playbook to build the java code and deploy the build code:

First we have to create a playbook called as playbookDeployment.yml

Playbook running successfully

Now both the playbooks are ready.

Now we have to create a github repo where we are going to place the playbooks.

Her we are going to make a inventory file also .

And weSo here we are going to github and creating a new repository.

will ask Jenkins to clone the repo and execute the playbooks.

Repository created

In the repository we will create a new file

First playbook we will mention here as playbookInstall.yml

Now we are going to add another file for playbookDeployment.yml

Now going to create a inventory file In inventory fil we create groups with their ip address.

Now we have to go to Jenkins to write down the code in order to run the playbooks

Now w are going to create pipeline

pipeline code =====

pipeline{

agent any

stages{

stage('clone the repo')

{

steps{

git branch: 'main', url: 'https://github.com/Biswaraj111/SL-CMAT-CEP1-Jenkins-Ansible.git'

}

}

stage('run playbook1')

{

steps{

ansiblePlaybook credentialsId: 'ansible', disableHostKeyChecking: true, installation: 'myansible', inventory: 'dev.inv', playbook: 'PlaybookInstall.yml'

}

]

stage('Run playbook Deployment')

{

steps{

ansiblePlaybook credentialsId: 'ansible', disableHostKeyChecking: true, installation: 'myansible', inventory: 'dev.inv', playbook: 'PlaybookDeployment.yml'

}

}

}

}