Jenkins Errors due to AD

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Veera Mani

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Jun 21, 2019, 10:27:16 AM6/21/19
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Hi,

I am running  jenkins-2.150.3-1.1.noarch 


But  after  Integrating with AD  , one fine day  the jenkins denied login for the AD users.
On  restart , we found the error on the  jenkins console instead of login menu.

Below is the best snippets which is a known error in jenkins.

Jun 18, 2019 12:02:12 PM jenkins.InitReactorRunner$1 onTaskFailed
SEVERE: Failed Loading global config
java.io.IOException: Unable to read /var/lib/jenkins/config.xml
        at hudson.XmlFile.unmarshal(XmlFile.java:181)
        at hudson.XmlFile.unmarshal(XmlFile.java:161)
        at jenkins.model.Jenkins.loadConfig(Jenkins.java:3025)
        at jenkins.model.Jenkins.access$1300(Jenkins.java:309)
        at jenkins.model.Jenkins$13.run(Jenkins.java:3124)
        at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
        at jenkins.model.Jenkins$5.runTask(Jenkins.java:1083)
        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
        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)
Caused by: jenkins.util.xstream.CriticalXStreamException: hudson.plugins.active_directory.ActiveDirectorySecurityRealm : hudson.plugins.active_directory.ActiveDirectorySecurityRealm
---- Debugging information ----
message             : hudson.plugins.active_directory.ActiveDirectorySecurityRealm
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : hudson.plugins.active_directory.ActiveDirectorySecurityRealm
class               : hudson.model.Hudson
required-type       : hudson.model.Hudson
converter-type      : hudson.util.RobustReflectionConverter
path                : /hudson/securityRealm
line number         : 17
version             : not available
-------------------------------

I used the below  article to remove the security and restore the  login's . 



<useSecurity>false</useSecurity>
<authorizationStrategy class="hudson.security.AuthorizationStrategy$Unsecured"/>
<securityRealm class="hudson.security.SecurityRealm$None"/>



 After  re-joining the AD  it works fine for a day  but it breaks the AD  integration again with the same old error.
Do we have a stable version of  Jenkins ?
Is there any backup policy I can configure to restore the  best working configuration of jenkins?

Thanks 



Slide

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Jun 21, 2019, 1:27:23 PM6/21/19
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What version of the Active Directory plugin do you have? Is it the latest?

Regards,

Alex

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Veera Mani

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Jun 21, 2019, 4:50:20 PM6/21/19
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The Version of Active Directory  is  2.16 and updated  to the  latest available.



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