Philipp Moeller added a comment - 2018-12-19 09:54 - edited I just confirmed that this happens during normal execution of code like: node( 'basic' ) { sshagent([ 'XXXXX' ]) { sh "echo foo" } }

Johannes Meixner added a comment - 2019-05-29 07:20 Hi, We're seeing these defunct processes independently of Swarm, with Docker 1.13.1 on RHEL7.

Basil Crow added a comment - 2019-06-01 18:20 This bug doesn't seem to be specific to the SSH slaves plugin or the Swarm Plugin. I'm reassigning this to the SSH Agent plugin component.

Christian Wehrli added a comment - 2019-06-03 12:31 We're also seeing this on an OpenShift environment: OpenShift 3.10 Jenkins 2.164.3 SSH Agent Plugin 1.17 Job runs without error but every time job has finished a new zombie process is born on underlying host.

Jesse Glick added a comment - 2021-03-10 16:47 If true, could perhaps be reproduced using something like https://github.com/jenkinsci/durable-task-plugin/blob/28ad9826c25f57d58f8ded28b727f357c838d12a/src/test/java/org/jenkinsci/plugins/durabletask/BourneShellScriptTest.java#L526-L565

Yacine added a comment - 2021-10-06 12:28 - edited running in a k8s pod - jenkins agent  I am not able to start some processes in a pipeline at some point because of this issue, so I tried to list the zombie processes every now and then in a test pipeline that has a lot of sh and ssh-agent calls [2021-10-06T12:21:49.842Z] + echo ' Number of Zombie Processes:' [2021-10-06T12:21:49.842Z] Number of Zombie Processes: [2021-10-06T12:21:49.842Z] + ps axo pid=,stat= [2021-10-06T12:21:49.842Z] + awk '$2~/^Z/ { print }' [2021-10-06T12:21:49.842Z] + wc -l [2021-10-06T12:21:49.842Z] 1173 [2021-10-06T12:21:49.842Z] + ps axo pid=,stat=,ppid=,command= [2021-10-06T12:21:49.842Z] + awk '$2~/^Z/ { print }' [2021-10-06T12:21:49.842Z] 152 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 166 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 289 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 297 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 308 Zs 1 [ssh-agent] <defunct> [2021-10-06T12:21:49.842Z] 314 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 326 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 338 Zs 1 [ssh-agent] <defunct> [2021-10-06T12:21:49.842Z] 344 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 355 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 367 Zs 1 [ssh-agent] <defunct> [2021-10-06T12:21:49.842Z] 373 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 384 Z 1 [sh] <defunct> [2021-10-06T12:21:49.842Z] 396 Zs 1 [ssh-agent] <defunct> ... sh, and ssh-agent are leaving back a lot of defunct processes ( from that log for example 1173 Zombies.. ), all of them have the same parent ( PPID=1) All the Zombies seem to have the same Parent Process with PID 1 ( which I can't kill ) Is there a way to solve this? ( other than having to start a new (k8s-pod) agent node..)