What is the version of the LDAP plugin you are using?

Also why 2.401.1 specifically (https://www.jenkins.io/changelog-stable/#v2.401.1)

• It's not the latest patch in this LTS line (at least use 2.401.3)
• It's 18 months old: you might want to use the latest LTS instead (eventually the previous one if you are still using JDK11 for running it)

=> I strongly suggest you take a backup of your JENKINS_HOME, upgrade all your plugins and upgrade Jenkins core to https://www.jenkins.io/changelog-stable/#v2.479.1 if you can use JDK17 or https://www.jenkins.io/changelog-stable/#v2.462.3 if you are stuck to JDK11

Thanks damien for the reply.

yes, i backup JENKINS_HOME and i still try upgrade jenkins in my UAT environment. jenkins is running via docker.

ldap plugin version 701.vf8619de9160a_

i'll try upgrade to version 2.414.3 and will be inform you the result.

juned56 upgrading LTS by LTS when you are running an old version is a waste of your time. You should go directly to the latest LTS line conform to your restrictions (check my previous message: either 2.462.3 or 2.479.1), along with plugins.

The rationale is that you will most probably hit edge cases which are solved by later plugins versions.

Plugins have a "minimum Jenkins Core version" baseline which can be upgraded over their life.
There are no "general" rule of thumb here as each plugin could break in different (and creative way) with incompatible or really old Core baseline. Except:

• Having a "staging' environment in which you can test some of your pipelines => you already have this with your UAT
• Taking backups => you already do that
• Upgrade frequently (once a month is a minimum) both Core and all plugins

The idea is to consider plugins to be "go to latest available for your Core version" and core to be "upgrade as soon as possible when available).

Hi dduportal , 

Before upgrade jenkins, i'm upgrade ldap plugins version 725.v3cb_b_711b_1a_ef 
then upgrade jenkins to version 2.462.3 but there is some issues :
1. ldap config is gone.

there is no error in logs. Any other suggestion dduportal ?

I appreciate for your help 
Thanks

This is Jenkins docker image that i used:
registry.redhat.io/ocp-tools-4/jenkins-rhel8:v4.13.0-1730208487

• The combination of 2.462.3 Core and 725.v3cb_b_711b_1a_ef LDAP plugin looks good!
• The Docker image `registry.redhat.io/ocp-tools-4/jenkins-rhel8:v4.13.0-1730208487` is unknown to me and is not supported officially by the Jenkins project. Only https://hub.docker.com/r/jenkins/jenkins is officially supported. If the problem comes from the image, it will be hard to help you. But worth checking other elements.

-> What is the JDK version used by Jenkins inside this image?
-> You need to check the container logs. There will be message(s) helping you and us to understand.