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Today I’m going to show you how to create a Pipeline for Jenkins.
What is a Pipeline in Jenkins?
A pipeline in Jenkins is a sequence of automated processes that are executed to build, test, and deploy a software project.
A Jenkins pipeline is defined as a configuration file in the Groovy programming language and can include multiple steps, such as code download from a version control system, execution of automated tests, and deployment to a production environment.
The main goal of a pipeline in Jenkins is to provide clear visibility and complete control over the software delivery process, and to ensure its quality and speed.
Once you understand what a Pipeline is in Jenkins, let’s create a file called Jenkinsfile at the root of our project.
pipeline{
agent any
stages{
stage('Build'){
steps{
echo 'Building the project'
}
}
stage('Test'){
steps{
echo 'Testing the project'
}
}
stage('Deploy'){
steps{
echo 'Deploying the project'
}
}
}
}
In this example, it only prints variables. We have defined 3 stages: Build, Test, and Deploy.
Now let’s assign the Jenkinsfile to our Jenkins.
First, open the Jenkins URL and click on New Item:
Then, enter a name and select Pipeline:
Click OK.
Fill in the configuration:
Scroll down to Pipeline and change the Definition to “Pipeline script from SCM”:
Now select GIT and enter the repository and login details:
Remember, if you’re using GitLab, change the default branch from MASTER to MAIN:
Finally, specify the path of the Jenkinsfile. In our case, it is at the root, so we don’t need to change anything:
Now click on Build Now:
And now we can see how the process has worked:
