jenkins-job-dsl

This project explains how to use the DSL plugin along with a seed job.

Setup

1. Create a new Jenkins Job (Freestyle project) called 'seed'.
2. In the SCM section, select Git and use as Repository URL the URL of this repository.
3. In the Build section, add a new step Process Job DSLs.
4. Enable the option Look on Filesystem and put the path to the job: jobs/*.groovy
5. Build the job just created.

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In case your Jenkins job fails due to the error ERROR: script not yet approved for use, as admin user, you will need to approve your Groovy script. Go to Manage Jenkins -> In-process Script Approval. This is a Jenkins Security feature.

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See this link and this on how to use a Groovy sandbox for the DSL plugin.