JCasC & Plugins updates result in infinite restart loop

[Ewelina Wilkosz]

(Logs in the attachment)

I had a Jenkins mastered configured with Jenkins Configuration as Code plugin. 

Jenkins version: 2.138.?

JCasC version: 1.3

and number of plugins requiring upgrade

I've updated JCasC to 1.5, Jenkins to latest lts (2.150.?) in a basic docker image, and in the file with plugins all the version numbers got replaced with "latest"

I tried to rebuild image and start a container using docker compose

It started well, but when configuring Active Directory it failed:

(line 1023) SEVERE: Failed ConfigurationAsCode.init 

but instead of simply failing it restarted Jenkins:

(line 1131) jenkins_1  | INFO: Jenkins stopped

(line 1132) jenkins_1  | Feb 20, 2019 12:15:24 PM jenkins.model.Jenkins$22 run

(line 1133) jenkins_1  | INFO: Restarting VM as requested by SYSTEM

when the restart was happening I updated configuration file and removed the Active Directory section so there was no exceptions next time but the restart happened again

(starting from line 2380)

jenkins_1  | Feb 20, 2019 12:22:06 PM hudson.WebAppMain$3 run

jenkins_1  | INFO: Jenkins is fully up and running

jenkins_1  | Feb 20, 2019 12:22:08 PM jenkins.model.Jenkins$22 run

jenkins_1  | INFO: Restarting VM as requested by SYSTEM

jenkins_1  | Feb 20, 2019 12:22:08 PM jenkins.model.Jenkins cleanUp

jenkins_1  | INFO: Stopping Jenkins

jenkins_1  | Feb 20, 2019 12:22:08 PM jenkins.model.Jenkins$18 onAttained

jenkins_1  | INFO: Started termination

[...]

And it keeps restarting.

I've seen same issue before when updating plugins when JCasC was used - both via UI or plugins.txt, but not EVERY time

this is a serious instability issue with JCasC 

anyone experienced something like that?

HELP!

BR

Ewelina

[Ewelina Wilkosz]

At some point we were hoping to handle plugins installation via JCasC and someone (Oleg Nenashev was that you?) was implementing automatic restarts for when plugins versions were updated in jenkins.yaml - I am now wondering if that can be the reason...