Upgrading my instance from 2.462.3.3 to 2.479.1.4 failed to start

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Issue

I upgraded my CloudBees CI instance from 2.462.3.3 to 2.479.1.4, and when starting up, the UI only presented the logs below. In the startup logs, I found the very same logs and many other exceptions warning the startup process has failed.

SEVERE    hudson.util.BootFailure#publish: Failed to initialize Jenkins
java.lang.NoSuchMethodError: ‘boolean hudson.model.Computer.isMasterComputer()’
    at PluginClassLoader for cloudbees-replication//com.cloudbees.jenkins.plugins.replication.ui.ReplicatedComputers.add(ReplicatedComputers.java:87)
    at PluginClassLoader for cloudbees-replication//com.cloudbees.jenkins.plugins.replication.ui.ReplicatedComputers$ComputerListenerImpl.onOnline(ReplicatedComputers.java:566)
    at jenkins.model.Jenkins.<init>(Jenkins.java:1056)
    at hudson.model.Hudson.<init>(Hudson.java:102)
    at hudson.model.Hudson.<init>(Hudson.java:87)
    at hudson.WebAppMain$3.run(WebAppMain.java:249)
Caused: hudson.util.HudsonFailedToLoad
    at hudson.WebAppMain$3.run(WebAppMain.java:263)
INFO    hudson.lifecycle.Lifecycle#onStatusUpdate: Stopping Jenkins
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Environment

Resolution

The cause for you to experience this error is related to the fact that in Beekeper configuration, the option Allow automatic upgrades of plugins on restart was disabled. While generally, this poses some risks as detailed in our documentation, in this version and due to a breaking change in the cloudbees-replication plugin, it can cause the behavior described above that can be fixed following the steps below.

  1. Stop CloudBees CI.

  2. Navigate in the filesystem under $JENKINS_HOME/plugins and remove the file cloudbees-replication.jpi.

  3. Start CloudBees CI.

  4. Navigate under Manage Jenkins → Beekeeper Upgrade Assistant → Cap Configuration tab and enable the checkbox Allow automatic upgrades of plugins on restart to avoid similar failures in the future with any CAP plugin.

  5. Install the cloudbees-replication plugin once again if you are interested in using HA/HS.

Tested product/plugin versions

From CloudBees CI 2.462.3.3 - cloudbees-replication 1808.1821 to CloudBees CI 2.479.1.4 - cloudbees-replication 1928.1932

This article is part of our Knowledge Base and is provided for guidance-based purposes only. The solutions or workarounds described here are not officially supported by CloudBees and may not be applicable in all environments. Use at your own discretion, and test changes in a safe environment before applying them to production systems.