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  1. Jenkins
  2. JENKINS-63014

Agent connection error using nginx proxy with WebSocket

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    • Jenkins 2.248

      I'm using nginx in a proxy setup. One public/ingress with a single upstream Jenkins instance. The attached docker-compose file can be used to recreate the exact environment. My test docker is running on Windows 10. The domain "ingress" was added hosts file as "127.0.0.1 ingress" for convenience.

      Basic Jenkins setup steps, root URL is set to _http://ingress/jenkins/

      Agent is connecting via JNPL with WebSocket option enabled. The following error message is reported:

      C:\workdir\jenkins\http\agent-1>java -jar agent.jar -jnlpUrl http://ingress/jenkins/computer/agent-1/slave-agent.jnlp -secret 4068cc653d7d0ca16f72404ac6ad62d5fe19f5798f5b3f0807c6ecf50fba4353 -workDir "c:\workdir\jenkins\http\agent-1"
Jul 08, 2020 8:33:25 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using c:\workdir\jenkins\http\agent-1\remoting as a remoting work directory
Jul 08, 2020 8:33:26 PM org.jenkinsci.remoting.engine.WorkDirManager setupLogging
INFO: Both error and output logs will be printed to c:\workdir\jenkins\http\agent-1\remoting
JNLP file http://ingress/jenkins/computer/agent-1/slave-agent.jnlp?encrypt=true has invalid arguments: [4068cc653d7d0ca16f72404ac6ad62d5fe19f5798f5b3f0807c6ecf50fba4353, agent-1, -webSocket, -workDir, c:\workdir\jenkins\http\agent-1, -internalDir, remoting, -url, http://ingress/jenkins/, -url, http://jenkins:8080/jenkins/, -headless, -workDir, c:\workdir\jenkins\http\agent-1, -internalDir, remoting]
Most likely a configuration error in the master
-webSocket supports only a single -url

      There are 2 URLs in the parameter list which is rejected.

      I cannot rule out the possibility of nginx configuration issue, but I followed all the guidelines.

       

        1. jenkins.zip
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            jglick Jesse Glick
            balazs_varnai Balazs Varnai
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              Created:
              Updated:
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