Triggering a Job on start up in Jenkins

Question

I am trying to get a new job to run every time my Jenkins restarts. I want to do this through "init.groovy" script. For example let's say if I restart my jenkins server it will execute a job that says "Hello world". And I have to create this job from my init.groovy script.

I have this code so far

import jenkins.model.Jenkins
import org.jenkinsci.plugins.workflow.job.WorkflowJob

WorkflowJob job = Jenkins.instance.createProject(WorkflowJob, 'my-pipeline2')

now I don't know how to configure this job instance without getting into the GUI. I want to add pipeline scripts to it. Like echo "Hello world". And then I want to finally build this job. I want to do all that from this one init.groovy script. I couldn't find any solution to this over internet. So any help is greatly appreciated. Thanks

Answer 1

So I have finally done this with the following groovy script.

#!groovy

import jenkins.model.*
import hudson.security.*
import jenkins.install.*;
import hudson.triggers.SCMTrigger;
import org.jenkinsci.plugins.workflow.job.WorkflowJob;

def instance = Jenkins.getInstance()

println "--> creating local user 'admin'"

def hudsonRealm = new HudsonPrivateSecurityRealm(false)
hudsonRealm.createAccount('admin','admin')
instance.setSecurityRealm(hudsonRealm)

def strategy = new FullControlOnceLoggedInAuthorizationStrategy()

instance.setAuthorizationStrategy(strategy)
instance.save()

jenkins = Jenkins.instance;

workflowJob = new WorkflowJob(jenkins, "workflow2");
jobName = "create-dsl-job2";
gitTrigger = new SCMTrigger("* * * * *");

dslProject = new hudson.model.FreeStyleProject(jenkins, jobName);
dslProject.addTrigger(gitTrigger);
jenkins.add(dslProject, jobName);
job = jenkins.getItem(jobName)
builders = job.getBuildersList()

hudson.tasks.Shell newShell = new hudson.tasks.Shell("echo \"Hello\" ")
builders.replace(newShell)

gitTrigger.start(dslProject, true);