Unable to start jenkins service in KKE jenkins level 1 task 1

[lalithv2211]

i am installing jenkins to VM using official document but looks like my 8080 port is being occupied, if i kill the process - my connection refreshes but 8080 doesn’t get free. Jenkins is running fine if i run it in another port but that won’t help me solve the task. Below is the error i am facing:

thor@jumphost ~$ sudo systemctl start jenkins.service
Job for jenkins.service failed because the control process exited with error code.
See “systemctl status jenkins.service” and “journalctl -xeu jenkins.service” for details.
thor@jumphost ~$ journalctl -xeu jenkins.service
Dec 07 16:50:52 host_link jenkins[9560]: Running from: /usr/share/java/jenkins.war
Dec 07 16:50:54 host_link jenkins[9560]: 2024-12-07 16:50:54.263+0000 [id=1] INFO winstone.Logger#logInternal: Beginning extraction from war file
Dec 07 16:50:55 host_link jenkins[9560]: 2024-12-07 16:50:55.783+0000 [id=1] WARNING o.e.j.ee9.nested.ContextHandler#setContextPath: Empty contextPath
Dec 07 16:50:55 host_link jenkins[9560]: 2024-12-07 16:50:55.961+0000 [id=1] INFO org.eclipse.jetty.server.Server#doStart: jetty-12.0.13; built: 2024-09-03T03:04:05.240Z; git: 816018a420329c1cacd4116799cda8c8c60a57cd; jvm 17.0.13+11-LTS
Dec 07 16:50:55 host_link jenkins[9560]: 2024-12-07 16:50:55.971+0000 [id=1] INFO org.eclipse.jetty.server.Server#doStop: Stopped oejs.Server@68df9280{STOPPING}[12.0.13,sto=0]
Dec 07 16:50:55 host_link jenkins[9560]: 2024-12-07 16:50:55.971+0000 [id=1] INFO winstone.Logger#logInternal: Jetty shutdown successfully
Dec 07 16:50:55 host_link jenkins[9560]: java.io.IOException: Failed to start Jetty
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//winstone.Launcher.(Launcher.java:194)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//winstone.Launcher.main(Launcher.java:490)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.lang.reflect.Method.invoke(Method.java:569)
Dec 07 16:50:55 host_link jenkins[9560]: at executable.Main.main(Main.java:335)
Dec 07 16:50:55 host_link jenkins[9560]: Caused by: java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:8080
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:349)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:313)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.Server.lambda$doStart$0(Server.java:552)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:992)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.Server.doStart(Server.java:548)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//winstone.Launcher.(Launcher.java:190)
Dec 07 16:50:55 host_link jenkins[9560]: … 6 more
Dec 07 16:50:55 host_link jenkins[9560]: Caused by: java.net.BindException: Address already in use
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.Net.bind0(Native Method)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.Net.bind(Net.java:555)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:337)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:294)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
Dec 07 16:50:55 host_link jenkins[9560]: … 21 more
Dec 07 16:50:55 host_link jenkins[9560]: 2024-12-07 16:50:55.972+0000 [id=1] SEVERE winstone.Logger#logInternal: Container startup failed
Dec 07 16:50:55 host_link jenkins[9560]: java.net.BindException: Address already in use
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.Net.bind0(Native Method)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.Net.bind(Net.java:555)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:337)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:294)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
Dec 07 16:50:55 host_link jenkins[9560]: Caused: java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:8080
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:349)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:313)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.Server.lambda$doStart$0(Server.java:552)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:992)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.server.Server.doStart(Server.java:548)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//winstone.Launcher.(Launcher.java:190)
Dec 07 16:50:55 host_link jenkins[9560]: Caused: java.io.IOException: Failed to start Jetty
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//winstone.Launcher.(Launcher.java:194)
Dec 07 16:50:55 host_link jenkins[9560]: at Jenkins Main ClassLoader//winstone.Launcher.main(Launcher.java:490)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Dec 07 16:50:55 host_link jenkins[9560]: at java.base/java.lang.reflect.Method.invoke(Method.java:569)
Dec 07 16:50:55 host_link jenkins[9560]: at executable.Main.main(Main.java:335)
Dec 07 16:50:56 host_link systemd[1]: Failed to start Jenkins Continuous Integration Server.
░░ Subject: A start job for unit jenkins.service has failed
░░ Defined-By: systemd
░░ Support: Red Hat Customer Experience & Engagement - Red Hat Customer Portal
░░
░░ A start job for unit jenkins.service has finished with a failure.
░░
░░ The job identifier is 794 and the job result is failed.

Please help me

[raymond.baoly]

Hi,

I’ve just checked it and it’s worked properly from my end. You can see the screenshot below.

Could you please try again and let me know if it persists?

[lalithv2211]

Thanks for the reply. I’m afraid, i am still facing the same issue. I tried all the steps mentioned in official documentation and also in this site How to Install Jenkins on CentOS or Rocky Linux. Can you pls share the steps and if possible commands u used please

[raymond.baoly]

sudo yum update -y
sudo yum install -y java-11-openjdk

sudo rpm --import https://pkg.jenkins.io/redhat/jenkins.io.key

sudo tee /etc/yum.repos.d/jenkins.repo <<EOF
[jenkins]
name=Jenkins-stable
baseurl=https://pkg.jenkins.io/redhat-stable/
gpgcheck=1
EOF

sudo yum install -y jenkins

Here is the command I used to install Jenkins.