How do I prevent two pipeline jenkins jobs of the same type to run in parallel on the same node?

Question

I do not want to allow two jobs of the same type (same repository) to run in parallel on the same node.

How can I do this using groovy inside Jenkinsfile ?

Answer 1

Until the "Throttle Concurrent Builds" plugin has Pipeline support, a solution would be to effectively run one executor of the master with a label that your job requires.

To do this, create a new node in Jenkins, for example an SSH node that connects to localhost. You could also use the command option to run slave.jar/swarm.jar depending on your setup. Give the node one executor and a label like "resource-foo", and give your job this label as well. Now only one job of label "resource-foo" can run at a time because there is only one executor with that lable. If you set the node to be in use as much as possible (default) and reduce the number of master executors by one, it should behave exactly as desired without a change to total executors.