‘Jenkins’ missing node label ‘master’ after v. 2.307+ upgrade

user_7273130 0
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After upgrading to 2.307 and applying terminology changes (from 'master' to 'Built-In Node'), my builds stopped working with the following error message: ‘Jenkins’ doesn’t have label ‘master’

My Jenkinsfile looks like this:


node('master') {
    dir('build') {
        stage('Checkout') {
            ...
        }
    }
}
jenkins-pipeline jenkins
2 Answers

It helps to read the Changelog when upgrading. You can also just look up the node in Jenkins.

  • Replace the term "master" with "controller" (for the main Jenkins application) or "built-in node", as appropriate. (pull 5425)
  • Add migration code to only change the node name (e.g. NODE_NAME environment variable) and label of the built-in node after explicit migration by an administrator. New installations get the new node and and label immediately. (pull 5425)
  • Add the system property jenkins.model.Jenkins.nodeNameAndSelfLabelOverride to specify a different node name and label for the built-in node (e.g. for Configuration as Code use cases) than the one otherwise determined. This will not affect other uses of the node name, such as the URL to the built-in node (now /computer/(built-in)/). (pull 5425)

Clarification:

If your Job definition, Pipeline definition, or Tool installer reference must be tied to the built-in node, it should use the label "built-in" instead of "master". Using the built-in (formerly master) node is strongly discouraged.

The new Nodes url (as shown below) is: ${JENKINS_URL}/computer/(built-in)/ instead of ${JENKINS_URL}/computer/(master)/

Built-In node

Alternative: It is possible to continue the existing configuration by adding "master" as a label to the "built-in" node.

Built-In label:master

user_5981410

In case you have only one node or don't care at which node is your build run, you can just remove the specific node name:

node {
    dir('build') {
        stage('Checkout') {
            ...
        }
    }
}

Otherwise, you can go to the Dashboard -> Manage Jenkins -> Manage Nodes and Clouds, then press downwards-arrow when you hover over a node's name and press Configure. Here you can add a label that you can then use in your Jenkinsfile as above.

user_72731300
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