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  1. Jenkins
  2. JENKINS-57357

NullPointerException due to non-backwards compatibility in hudson.plugins.EC2.SlaveTemplate.

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Details

    • Bug
    • Status: Resolved (View Workflow)
    • Major
    • Resolution: Fixed
    • ec2-plugin
    • None
    • Jenkins 2.172, ec2-plugin master (likely as of 2f348aa519338aac64dd19954b0b41a62a8ea6fc)

    Description

      Upon upgrading the ec2-plugin to master and restarting Jenkins, the EC2 nodes begin to fail connecting with the following exception

       

       

      This is likely due to the recent change that allows configuring the strategy for determining the hostname/IP address of the node https://github.com/jenkinsci/ec2-plugin/pull/329.

      https://wiki.jenkins.io/display/JENKINS/Hint+on+retaining+backward+compatibility suggests that it is necessary to define a readResolve() method when deprecating fields (in this case the boolean fields usePrivateDnsName connectUsingPublicIp) because when objects are loaded from XML their constructors are not invoked.

      What likely happened here, is that the newly defined connectionStrategy was null when loaded from XML, causing the hostname/IP address determination to fail at instance startup time.

       

      jvz
      dgarzon

      Attachments

        Activity

          Fix Released in 1.43

          thoulen FABRIZIO MANFREDI added a comment - Fix Released in 1.43

          s one of the reason why the 1.43 wasn't released.

          Fix is ongoing with the pull request :

          https://github.com/jenkinsci/ec2-plugin/pull/347

          thoulen FABRIZIO MANFREDI added a comment - s one of the reason why the 1.43 wasn't released. Fix is ongoing with the pull request : https://github.com/jenkinsci/ec2-plugin/pull/347

          People

            thoulen FABRIZIO MANFREDI
            katsuya94 Adrien Tateno
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            Dates

              Created:
              Updated:
              Resolved: