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Bug
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Resolution: Not A Defect
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Minor
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None
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Jenkins 2.249.2
lockable-resources-plugin 2.10
kubernetes-plugin 1.27.3
Hello,
My Jenkins is running in a Kubernetes cluster and all pipelines run in pod.
I'd like to limit the number of pipelines running in parallel: I'd like an executor limitation like we have when we were running all pipelines in master.
I'm using lockable resources plugin.
My expecting implementation was something like:
pipeline {
agent {
kubernetes {
label 'test-lock'
yaml libraryResource('my-pod.yaml')
}
}
options {
lock(label: 'forge-executor', quantity: 1, variable: 'forgeExecutor')
}
stages {
stage('echo') {
steps {
echo "OK"
script {
def outcome = input message: 'Please select', parameters: [
[name: 'myChoice', description: 'My choice', choices: 'Choice 1\nChoice 2\nChoice 3', $class: 'ChoiceParameterDefinition']
]
}
}
}
}
}
OK, the pipeline doesn't execute any stages if it cannot lock, but Kubernetes resources are used.
I try to add when block with beforeAgent option in, but when block is only allowed at stage level.
So I found a workaround: don't set any main agent and have one top stage with when condition:
pipeline {
agent none
stages {
stage('lock') {
agent {
kubernetes {
label 'test-lock'
yaml libraryResource('my-pod.yaml')
}
}
when {
beforeAgent true
equals(expected: true, actual:true)
}
options {
lock(label: 'forge-executor', quantity: 1, variable: 'forgeExecutor')
}
stages {
stage('echo') {
steps {
echo "OK"
script {
def outcome = input message: 'Please select', parameters: [
[name: 'myChoice', description: 'My choice', choices: 'Choice 1\nChoice 2\nChoice 3', $class: 'ChoiceParameterDefinition']
]
}
}
}
}
}
}
}
Or more simple
pipeline {
agent none
options {
lock(label: 'forge-executor', quantity: 1, variable: 'forgeExecutor')
}
stages {
stage('lock') {
agent {
kubernetes {
label 'test-lock'
yaml libraryResource('my-pod.yaml')
}
}
stages {
stage('echo') {
steps {
echo "OK"
script {
def outcome = input message: 'Please select', parameters: [
[name: 'myChoice', description: 'My choice', choices: 'Choice 1\nChoice 2\nChoice 3', $class: 'ChoiceParameterDefinition']
]
}
}
}
}
}
}
}
IMO, the pipeline should not take any resources if it can lock expected resource and should stay in queue.
Regards,
Arnaud
