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  1. Jenkins
  2. JENKINS-65861

SSH Build Agents 1.32.0 Master cannot connect to Agents anymore

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: Major Major
    • docker-plugin, ssh-slaves-plugin
    • None
    • Jenkins LTS: 2.289.1
      SSH Build Agents: 1.32.0

      I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

      I can see in the Agent overview that the containers are spawned but they still have the red "x".
      The containers are running and manually i am able to login from the Master running on unix

      ssh root@172.18.24.195 -p 52590 -l jenkins

      Error

      ERROR: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
java.lang.AssertionError: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
	at jenkins.model.Jenkins.getDescriptorOrDie(Jenkins.java:1598)
	at hudson.model.AbstractDescribableImpl.getDescriptor(AbstractDescribableImpl.java:42)
	at hudson.plugins.sshslaves.SSHLauncher.checkJavaIsInPath(SSHLauncher.java:529)
	at hudson.plugins.sshslaves.SSHLauncher.access$300(SSHLauncher.java:111)
	at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:449)
	at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:421)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

      Workaround:

      As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.

      Links

        1. error.txt
          3 kB

          [JENKINS-65861] SSH Build Agents 1.32.0 Master cannot connect to Agents anymore

          Stephan Watermeyer created issue -
          Stephan Watermeyer made changes -
          Description Original: I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

          I can see in the Agent overview that the containers are spawned but they still have the red "x".
          The containers are running and manually i am able to login from the Master running on unix
          {code}
          ssh root@172.18.24.195 -p 52590 -l jenkins
          {code}

          h3. Workaround:
          As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.

          I will provide some more logs soon...           		New: I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

          I can see in the Agent overview that the containers are spawned but they still have the red "x".
          The containers are running and manually i am able to login from the Master running on unix
          {code}
          ssh root@172.18.24.195 -p 52590 -l jenkins
          {code}

          h3. Workaround:
          As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.
          * https://github.com/jenkinsci/docker-plugin/issues/740

          I will provide some more logs soon...
          Jesse Glick made changes -
          Component/s New: ssh-slaves-plugin [ 15578 ]
          Component/s Original: ssh-agent-plugin [ 17509 ]

          Alexander Fischer added a comment -

          I have the same problems with the new version, downgrade to 1.31.5 helps

          Alexander Fischer added a comment - I have the same problems with the new version, downgrade to 1.31.5 helps
          Stephan Watermeyer made changes -
          Attachment New: error.txt [ 55095 ]
          Stephan Watermeyer made changes -
          Description Original: I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

          I can see in the Agent overview that the containers are spawned but they still have the red "x".
          The containers are running and manually i am able to login from the Master running on unix
          {code}
          ssh root@172.18.24.195 -p 52590 -l jenkins
          {code}

          h3. Workaround:
          As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.
          * https://github.com/jenkinsci/docker-plugin/issues/740

          I will provide some more logs soon...           		New: I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

          I can see in the Agent overview that the containers are spawned but they still have the red "x".
          The containers are running and manually i am able to login from the Master running on unix
          {code}
          ssh root@172.18.24.195 -p 52590 -l jenkins
          {code}

          h3. Error
          {code}
          ERROR: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
          java.lang.AssertionError: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
          at jenkins.model.Jenkins.getDescriptorOrDie(Jenkins.java:1598)
          at hudson.model.AbstractDescribableImpl.getDescriptor(AbstractDescribableImpl.java:42)
          at hudson.plugins.sshslaves.SSHLauncher.checkJavaIsInPath(SSHLauncher.java:529)
          at hudson.plugins.sshslaves.SSHLauncher.access$300(SSHLauncher.java:111)
          at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:449)
          at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:421)
          at java.util.concurrent.FutureTask.run(FutureTask.java:266)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
          {code}

          h3. Workaround:
          As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.
          * https://github.com/jenkinsci/docker-plugin/issues/740

          I will provide some more logs soon...
          Stephan Watermeyer made changes -
          Description Original: I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

          I can see in the Agent overview that the containers are spawned but they still have the red "x".
          The containers are running and manually i am able to login from the Master running on unix
          {code}
          ssh root@172.18.24.195 -p 52590 -l jenkins
          {code}

          h3. Error
          {code}
          ERROR: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
          java.lang.AssertionError: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
          at jenkins.model.Jenkins.getDescriptorOrDie(Jenkins.java:1598)
          at hudson.model.AbstractDescribableImpl.getDescriptor(AbstractDescribableImpl.java:42)
          at hudson.plugins.sshslaves.SSHLauncher.checkJavaIsInPath(SSHLauncher.java:529)
          at hudson.plugins.sshslaves.SSHLauncher.access$300(SSHLauncher.java:111)
          at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:449)
          at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:421)
          at java.util.concurrent.FutureTask.run(FutureTask.java:266)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
          {code}

          h3. Workaround:
          As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.
          * https://github.com/jenkinsci/docker-plugin/issues/740

          I will provide some more logs soon...           		New: I've updated our Jenkins environment and since the update our dynamic build agents do not start anymore.

          I can see in the Agent overview that the containers are spawned but they still have the red "x".
          The containers are running and manually i am able to login from the Master running on unix
          {code}
          ssh root@172.18.24.195 -p 52590 -l jenkins
          {code}

          h3. Error
          {code}
          ERROR: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
          java.lang.AssertionError: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
          at jenkins.model.Jenkins.getDescriptorOrDie(Jenkins.java:1598)
          at hudson.model.AbstractDescribableImpl.getDescriptor(AbstractDescribableImpl.java:42)
          at hudson.plugins.sshslaves.SSHLauncher.checkJavaIsInPath(SSHLauncher.java:529)
          at hudson.plugins.sshslaves.SSHLauncher.access$300(SSHLauncher.java:111)
          at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:449)
          at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:421)
          at java.util.concurrent.FutureTask.run(FutureTask.java:266)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
          {code}

          h3. Workaround:
          As i have faced a similar issue already 2019 i have simply downgraded this plugin to 1.31.5 and it seems to work fine now.
          * https://github.com/jenkinsci/docker-plugin/issues/740

          h3. Links
          * https://github.com/jenkinsci/docker-plugin/issues/834
          Ivan Fernandez Calvo made changes -
          Component/s New: docker-plugin [ 18724 ]

          Ivan Fernandez Calvo added a comment -

          There is a version that implements the Descriptor https://github.com/jenkinsci/docker-plugin/issues/834#issuecomment-872780082 this should fix the issue.

          when https://github.com/jenkinsci/docker-plugin/pull/835 PR is merged and released the issue would be fixed.

          Ivan Fernandez Calvo added a comment - There is a version that implements the Descriptor https://github.com/jenkinsci/docker-plugin/issues/834#issuecomment-872780082 this should fix the issue. when https://github.com/jenkinsci/docker-plugin/pull/835 PR is merged and released the issue would be fixed.
          Ivan Fernandez Calvo made changes -
          Resolution New: Won't Do [ 10001 ]
          Status Original: Open [ 1 ] New: Closed [ 6 ]

            ifernandezcalvo Ivan Fernandez Calvo
            phreakadelle Stephan Watermeyer
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            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved: