jenkins.war arguments not respected?

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jenkins.war arguments not respected?

Juan Eiros

Hello,

I am not sure if this is the right forum to raise this question. Please redirect as appropriate.

I want to run Jenkins running the WAR file directly (https://www.jenkins.io/doc/book/installing/#war-file) as a daemonized process.

I see that there are some arguments that allow to change the port the web app is running on, as well as the prefix. These are, --httpPort and --prefix, respectively. I can see this running: java -jar jenkins.war --help

--httpPort               = set the http listening port. -1 to disable, Default is 8080

--prefix                 = add this prefix to all URLs (eg http://localhost:8080/prefix/resource). Default is none

--daemon                 = fork into background and run as daemon (Unix only)

So this is the command I ran:

java -jar jenkins.war --httpPort=16644 --prefix=jenkins-7521 --daemon

I can see this is running:

$ ps -ef | grep jenkins
username  3690     1  1 06:55 ?        00:00:14 java -Dcom.sun.akuma.Daemon=daemonized -jar jenkins.war --httpPort=16644 --prefix=jenkins-7521 --daemon

However, I get a 404 when trying to access the application both from a browser and using curl.404_jenkins.PNG

$ curl http://10.51.20.222:16644/jenkins-7521/login
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Error 404 Not Found</title>
</head>
<body><h2>HTTP ERROR 404 Not Found</h2>
<table>
<tr><th>URI:</th><td>/jenkins-7521/login</td></tr>
<tr><th>STATUS:</th><td>404</td></tr>
<tr><th>MESSAGE:</th><td>Not Found</td></tr>
<tr><th>SERVLET:</th><td>-</td></tr>
</table>
<hr><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.4.30.v20200611</a><hr/>

</body>
</html>


I've seen a mention in this thread (https://stackoverflow.com/questions/9685782/can-not-access-jenkins-by-prefix-value-even-if-prefix-is-set) to altering the JENKINS_ARGS and alter the prefix, however I think this only applies when running the Jenkins application through yum (Jenkins is run as a service). I can't find a mention to JENKINS_ARGS in the .jenkins subfolder made in the $HOME of the user that runs the java command:

$ pwd
/home/username/.jenkins
$ grep -R 'JENKINS_ARGS'

$



Any ideas on what's going on?

Version details

jenkins.war is 2.249.1 LTS

$ java -version
openjdk version "1.8.0_161"
OpenJDK Runtime Environment (build 1.8.0_161-b14)
OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)
$ uname -a
Linux ab-rhel 3.10.0-862.el7.x86_64 #1 SMP Wed Mar 21 18:14:51 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux



Thanks,


Juan Eiros


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