[JIRA] [nodelabelparameter-plugin] (JENKINS-22185) Job with "NodeLabel Parameter Plugin" does not build in parallel on all nodes which share a label.

Wed, 14 Jan 2015 07:29:03 -0800

Hello Christian,

I have dealt with this issue. I am actually giving a presentation on it later this month.

I don't believe it's an issue as much as a design decision, with the idea being that if a single machine can pass a build, why run it on an identical machine?

Here is my solution:
Summary: We have a parent job that finds all online nodes that match a certain label, then foreach node, pass a downstream job a label specific to that node.

Details:
We have 40 nodes named 'hl-combo-##' where ## is 01-40. Each of those nodes is also labelled 'harnesslab' and 'hl-combo-##'. In a parent job, using groovy, we search all online nodes that have that label:

jenkins.model.Jenkins.instance.nodes.each {
	if (it.toComputer().online && it.assignedLabels.contains(new hudson.model.labels.LabelAtom('harnesslab'))) {
		harnesslabOnlineNodes += it


Then after some other code, we do:





harnesslabOnlineNodes.each {
		println 'Starting configure job for: ' + it.name
		def nodeLabel = it.name





and we pass nodeLabel into the job as a parameter for the NodeLabel Parameter Plugin. This way, we end up queueing 40 parallel jobs, each pointing at 1 node, but if we were change anything about the node configuration or number, we wouldn't need to alter any code.



Hope this helps!
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