What is declarative pipeline in Jenkins?
In pipeline as code technique, jobs are created using a script file that contains the steps to be executed by the job. In Jenkins, that scripted file is called Jenkinsfile. In this Jenkins tutorial, we will deep dive into Jenkins Declarative Pipeline with the help of Jenkins declarative pipeline examples.
How do I create a pipeline in Jenkins?
Jenkins provides two ways of developing a pipeline- Scripted and Declarative. Traditionally, Jenkins jobs were created using Jenkins UI called FreeStyle jobs. In Jenkins 2.0, Jenkins introduced a new way to create jobs using the technique called pipeline as code.
What is the difference between Groovy and declarative pipeline?
It was designed as a general-purpose DSL (Domain Specific Language) built with Groovy. Declarative: The Groovy learning curve isn’t typically desirable for all members of a given team, so a Declarative pipeline was created to offer a simpler, more opinionated & well-defined syntax for authoring Jenkins Pipeline.
How do I convert a scripted pipeline to declarative?
Let’s start by converting the Scripted Pipeline straight to Declarative. Select where to run this Pipeline, in this case "any" agent, regardless of label. Declarative automatically performs a checkout of source code on the agent, whereas Scripted Pipeline users must explicitly call checkout scm.