Matrix in Pipelines

[Roland Asmann]

Hey everybody,

I have this job, written as a declarative pipeline, the now needs to be run on 2 nodes instead of just 1. Before, I would use the Matrix-Job for that, but I am not quite sure how to do this in my pipeline...

I searched around a bit and found some example on how to do it with a scripted pipeline, but I would prefer to stick to the declarative format -- if possible. The reason for that is that my team is just learning about pipelines and have just about mastered declarative. I don't want to throw them in the deep end for scripted yet.

Is this possible in declarative? If so, tips would be helpful.

If not, at least 1 reply telling me this would also be helpful! ;-)

Thanks,

Roland

[Jan Monterrubio]

Could you do a job that takes a Node parameter and then a job with 2 stages, one for each node that just calls the first job?

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[christop...@googlemail.com]

Hi,

I don't exactly understand your problem. Please have a look here:

https://www.jenkins.io/blog/2019/11/22/welcome-to-the-matrix/

you very easily can integrate matrix in a declarative pipeline. Insert your nodes as an axis of the matrix and add an 'agent' in the stage doing your job.

But maybe I missed a point somewhere...

[Roland Asmann]

Hi,

Thanks for that. I see I forgot to mention something in my original
post: The nodes I want to run my job on should come from a label. So I
would need to get the 'values' in the matrix-part by figuring out which
nodes have this label set...

Can I add a simple 1-, maybe 2-line script block in my pipeline to
retrieve those values and use them?

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[christop...@googlemail.com]

You mean something like a dynamic axis created by a piece of script? I had a similar issue in the past and did not find a way.

There might be something with script blocks in a pipeline and dynamic stage-creation with a for-loop.

When I remember right I found some examples with google when I investigated this.

[Roland Asmann]

Thanks for the replies. I went with hard-coding the 2 nodes, in the
hopes that at some point the matrix will allow use of variables for the
value.

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