Issue/question with Pipeline and SCM

[SamL]

Hello Folks

I have this simple Pipeline script

pipeline {

    agent none

    stages {

        stage ('Check out the Code') {

            agent { label 'Axis' }

            steps {  

                echo 'Checking out Source from Mercurial'

                checkout changelog: true, scm: [$class: 'MercurialSCM', browser: [$class: 'HgWeb', url: MercUrl], clean: true, credentialsId: '', installation: '(Default)', revision: myRev, source: MercRepo]

            }

        }

    }

}

I expected it to do the checkout on the agent  but it does not; it is doing the checkout on  the Master.

What I am missing, or am I trying to do something is not possible.

Thank you very much for your help.

Sam

[jer...@bodycad.com]

How is your slave labels configured?

If nothing match is found, I think the code run on the master. Also make sure the master node doesn't have the labels Axis. You also may want to change the usage of each node (node configuration). May want to mark your master to be used only when matching and your slave to be used as much as possible.

[SamL]

Thank you very much for  the reply

The slave has the Label Axis on its configuration.

Slave is already configured to be used as much as possible.

I have put a label on the Master and configure it so then only jobs matching the name run in it.

But sadly the results are the same.

[Jérôme Godbout]

Because if both master and slave have the Axis labels and both are setup to be used, there's multiples option to build, the first free may be taken (in your case probably the master is taken). Maybe there's a bug into the usage (

'use as much as possible' and the 'only use when labels match') but all your master/slave should be set to  'Only used this...'. So your label will define where this can be used.

You may want to add a label 'slave' 'master' on your node and make sure the master is not selected or remove the Axis label from your master.

Jerome Godbout Software Developer 2035 rue du Haut-Bord, Québec, QC, Canada. G1N 4R7 T:  +1 418 527-1388 E: jer...@bodycad.com www.bodycad.com

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[SamL]

One more thing when I look at the log output it says that it is running on the slave with the specified label. Yet the SCM step gets executed on the Master

[SamL]

The  label Axis is not in the Master

At the moment I have the Master and one agent

The Master has the label  'Master' and  Only build jobs with label expressions matching this nose

The Agent has the label 'Axis' and  Use this node as much as possible

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[Jérôme Godbout]

Sounds like a bug into declarative pipeline and the agent. I'm no declarative pipeline, so you may want to check the agent doc to know if the position is correct into the script.

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