Thanks Ivan for your response, I'm running Jenkins in a standalone mode, without any web server such as Apache / Nginx in front of it, Jenkins is configured for TSL 8080, and I've configured the inbound agents fixed 8081 port, so I'm not following what kind of port negotiation should be happening?
All relevant ports are open both on the Jenkins side, and on the slave side, and I do not see any hints other then those I posted herein. Where can I find more clues regarding the issue? How would you troubleshoot it? Many Thanks! Vitaliy On Sunday, November 1, 2020 at 8:16:55 PM UTC+2 [email protected] wrote: > The inbound agents negotiate the connection calling a HTTP/S URL, because > of that your fixed inbound does not apear in the URL you see in the UI. The > URL you see there, it is generated with the setting Jenkins URL you have in > Manage Jenkins/System Configuration,. Because you see an HTTP URL and you > said that you have an HTTPS connection probably you have a warning on > Manage Jenkins about that you do not have your Jenkins URL well configured. > So if you have a Apache or Nginx in front Jenkins to configure the HTTPS > you have to set the Jenkins URL to the effective URL that should use all > clients/agents, it is the URL exposed by Apace/Nginx, then your URL to > connect you will see in the UI wil be the correct and the negotiation of > the inbound port will work. > One last thing, take care that the agent can reach the HTTP/S and inbound > ports. > > El sábado, 31 de octubre de 2020 a las 21:27:09 UTC+1, [email protected] > escribió: > >> Hi, >> >> I'm trying to configure inbound agent (slave). >> For this purpose I've defined in Jenkin's Global security setting >> >> TCP port for inbound agents: Fixed: 8081, and created a new node. >> >> *The node settings page suggests the following command to be run on the >> agent:* >> java -jar agent.jar <https://ci.adam-cogtec.com:8080/jnlpJars/agent.jar> >> -jnlpUrl http://ip:8080/computer/NODE/slave-agent.jnlp -secret SECRET >> -workDir "/home/pi/jenkins" >> This is strange, as I configured the TCP Port for inbound connections to >> be 8081, not 8080. >> Moreover, the server itself is secuted with TLS, however jenkins suggests >> to use HTTP. >> >> *Running the command produces the following error:* >> Failed to obtain >> http://ip:8080/computer/NODE/slave-agent.jnlp?encrypt=true >> java.net.SocketException: Unexpected end of file from server >> at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:851) >> at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:678) >> at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:848) >> at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:678) >> at >> sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1593) >> at >> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498) >> at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) >> at hudson.remoting.Launcher.parseJnlpArguments(Launcher.java:517) >> at hudson.remoting.Launcher.run(Launcher.java:347) >> at hudson.remoting.Launcher.main(Launcher.java:298) >> Waiting 10 seconds before retry >> >> *Trying to change port to 8081 produces:* >> Failed to obtain >> http://ip:8081/computer/NODE/slave-agent.jnlp?encrypt=true >> java.io.IOException: Failed to load >> http://ci.adam-cogtec.com:8081/computer/VitaliysAutoPi/slave-agent.jnlp?encrypt=true: >> >> 404 Not Found >> at hudson.remoting.Launcher.parseJnlpArguments(Launcher.java:519) >> at hudson.remoting.Launcher.run(Launcher.java:347) >> at hudson.remoting.Launcher.main(Launcher.java:298) >> Waiting 10 seconds before retry >> >> *Changing the URL to https & port 8081 hangs for a long time.* >> >> >> *Changing the URL to https & port 8080 produces the following error:* >> Oct 31, 2020 7:23:14 PM hudson.remoting.jnlp.Main$CuiListener error >> SEVERE: Handshake response not received. >> io.jenkins.remoting.shaded.javax.websocket.DeploymentException: Handshake >> response not received. >> at >> io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager$3$1.run(ClientManager.java:694) >> at >> io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager$3.run(ClientManager.java:712) >> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) >> at java.util.concurrent.FutureTask.run(FutureTask.java:266) >> at >> io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager$SameThreadExecutorService.execute(ClientManager.java:866) >> at >> java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112) >> at >> io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:511) >> at >> io.jenkins.remoting.shaded.org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:355) >> at hudson.remoting.Engine.runWebSocket(Engine.java:628) >> at hudson.remoting.Engine.run(Engine.java:470) >> >> *So which URL should be the right URL, and how would you troubleshoot >> this issue?* >> >> Many Thanks! >> Vitaliy >> > -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. 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