Issue

I have podRetention set to "always" at the Cloud/Kubernetes level. I have 2 containers in my PodTemplate one for jnlp and another for docker-dind. Both have ttyEnabled: true.

When idleMinutes comes to bear, the log below correctly shows that jenkins wants to disconnect the agent and that the pod is retained according to the podRetention policy. However, the jnlp container is "completed" and the pod stays up but is unusable.

Expectation

I am expecting for the pod to indeed stay up but be operational by keeping the jnlp container running.

Logs

Here is the jenkins log:

2023-07-12 17:00:13.813+0000 [id=370]    INFO    o.c.j.p.k.KubernetesLauncher#launch: Created Pod: kubernetes cicd-int/jenkins-agent-1kdjt
2023-07-12 17:00:15.024+0000 [id=370]    INFO    o.c.j.p.k.KubernetesLauncher#launch: Pod is running: kubernetes cicd-int/jenkins-agent-1kdjt
2023-07-12 17:08:06.465+0000 [id=26]    INFO    h.slaves.CloudRetentionStrategy#check: Disconnecting jenkins-agent-1kdjt
2023-07-12 17:08:06.466+0000 [id=26]    INFO    o.c.j.p.k.KubernetesSlave#_terminate: Terminating Kubernetes instance for agent jenkins-agent-1kdjt
2023-07-12 17:08:06.487+0000 [id=26]    WARNING    o.c.j.p.k.KubernetesSlave#_terminate: Agent pod jenkins-agent-1kdjt was not deleted due to retention policy Default.
2023-07-12 17:08:06.488+0000 [id=26]    INFO    o.c.j.p.k.KubernetesSlave#_terminate: Disconnected computer jenkins-agent-1kdjt
2023-07-12 17:08:06.507+0000 [id=18]    INFO    j.s.DefaultJnlpSlaveReceiver#channelClosed: Jetty (winstone)-18 for jenkins-agent-1kdjt terminated: java.nio.channels.ClosedChannelException

Here is the agent's jnlp container log:

Jul 12, 2023 5:00:14 PM hudson.remoting.jnlp.Main createEngine
INFO: Setting up agent: jenkins-agent-1kdjt
Jul 12, 2023 5:00:14 PM hudson.remoting.Engine startEngine
INFO: Using Remoting version: 3131.vf2b_b_798b_ce99
Jul 12, 2023 5:00:14 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using /home/jenkins/agent/remoting as a remoting work directory
Jul 12, 2023 5:00:14 PM org.jenkinsci.remoting.engine.WorkDirManager setupLogging
INFO: Both error and output logs will be printed to /home/jenkins/agent/remoting
Jul 12, 2023 5:00:15 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: WebSocket connection open
Jul 12, 2023 5:00:15 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected
Jul 12, 2023 5:08:06 PM org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave$SlaveDisconnector call
INFO: Disabled agent engine reconnects.
Jul 12, 2023 5:08:06 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Write side closed
Jul 12, 2023 5:08:06 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Read side closed
Jul 12, 2023 5:08:06 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated
Jul 12, 2023 5:08:06 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Read side closed