Using all agents available

[Hari Kodungallur]

Hello,

I am a new Jenkins user. I am looking through tools that have a support for the following functionality or similar.

I want to configure a pool of agents that can either do builds or tests. But when a particular type of test comes in, I would like to use all available agents and kick off tests on them. 

Suppose I have 5 agents in the pool. They are just waiting for jobs -- builds or tests. Let us say two of them get busy doing builds. And at this time I kick off my test. It should detect that three of the agents are idle and kick off tests on the three agents. At a later time, possibly all 5 agents are idle and I want the test to be kicked off on all 5 of them. 

I am wondering if there a feature or a plugin in Jenkins that can accomplish this task. 

Thank you much.

-Hari

[Scott Evans]

Just put a label on the agents and assign both the build and test jobs to that label and it should work just as you expect.  Note that unless you use a matrix configuration, a job will only use one agent at a time, so you'd want to look into matrix jobs if you have several sets of tests you want to run against a single job configuration.

-Hari

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[Hari Kodungallur]

Thank you much Scott. 

I don't quite understand it fully -- expected as I don't understand the Jenkins terminology yet. Let me try out whatever you mentioned and I will send updates / follow up questions after that. 

Thanks,

-Hari

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[Hari Kodungallur]

Thanks Scott.

This works only partially. I can get it to build on all slaves that are in the pool. But I would like it to build only on all *available* slaves. That is, if I have [slave1, slave2, slave3] in the pool and if slave1 is currently doing a different build, I want the my build to use slave2 and slave3 only and *not* queue up a job on slave1. 

I am trying to see if the answer given in http://jenkins.361315.n4.nabble.com/Run-a-build-concurrently-on-all-slaves-td4651190.html will work with NodeLabel Parameter plugin, so far unsuccessful trying to pass label parameters across. Also, don't know even if I am able to pass the parameters correctly, it will behave like I want it (as explained above).

Thanks,

-Hari