Jenkins not starting

[Mai Waly]

Hi All,

Please advise what happen as Jenkins is no longer starting and showing error, there is no gui any more.

ay 10, 2020 7:48:13 AM hudson.util.BootFailure publish
SEVERE: Failed to initialize Jenkins
hudson.util.HudsonFailedToLoad: org.jvnet.hudson.reactor.ReactorException: java.io.IOException: Unable to read /jenkins/config.xml
        at hudson.WebAppMain$3.run(WebAppMain.java:244)
Caused by: org.jvnet.hudson.reactor.ReactorException: java.io.IOException: Unable to read /jenkins/config.xml
        at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:269)
        at jenkins.InitReactorRunner.run(InitReactorRunner.java:45)
        at jenkins.model.Jenkins.executeReactor(Jenkins.java:1009)
        at jenkins.model.Jenkins.<init>(Jenkins.java:877)
        at hudson.model.Hudson.<init>(Hudson.java:85)
        at hudson.model.Hudson.<init>(Hudson.java:81)
        at hudson.WebAppMain$3.run(WebAppMain.java:227)
Caused by: java.io.IOException: Unable to read /jenkins/config.xml
        at hudson.XmlFile.unmarshal(XmlFile.java:165)
        at jenkins.model.Jenkins.loadConfig(Jenkins.java:2785)
        at jenkins.model.Jenkins.access$700(Jenkins.java:324)
        at jenkins.model.Jenkins$16.run(Jenkins.java:2803)
        at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
        at jenkins.model.Jenkins$7.runTask(Jenkins.java:998)
        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: jenkins.util.xstream.CriticalXStreamException: hudson.security.ProjectMatrixAuthorizationStrategy : hudson.security.ProjectMatrixAuthorizationStrategy
---- Debugging information ----
message             : hudson.security.ProjectMatrixAuthorizationStrategy
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : hudson.security.ProjectMatrixAuthorizationStrategy
class               : hudson.model.Hudson
required-type       : hudson.model.Hudson
converter-type      : hudson.util.RobustReflectionConverter
path                : /hudson/authorizationStrategy
line number         : 8
version             : not available

Permission checked

Disk space is Ok

All what i see is that plugins folder is missing. Jpi files and the plugin folders are there

Like there is a folder for matrix-project and matrix-auth but no jpi files.

Please help.

Thanks,

Mai

[Mai Waly]

This is a duplicate issue, already a post open.