I am facing the same issue today. For Jenkins agent : TCP port for inbound agent. - fixed 8020 port I used the same like below:
docker run jenkinsci/jnlp-slave -url http://jenkins-master.test:8020 -workDir=/home/jenkins/agent pkRUdAH07VFHhSWb9RAQCRFdWP7j0eIx9jfhRhj5 jenkins-agent but still seeing issue: Feb 17, 2020 2:45:58 PM hudson.remoting.jnlp.Main$CuiListener error SEVERE: http://jenkins-master.test:8020/tcpSlaveAgentListener/ is invalid: 404 Not Found java.io.IOException: http://jenkins-master.test:8020/tcpSlaveAgentListener/ is invalid: 404 Not Found Can you let me know how to fix this, thanks. On Wednesday, April 11, 2018 at 4:12:23 PM UTC+1, john.peterson wrote: > > Legacy systems (3+ years) running 2.111 > > http://jenkins_1:8080/tcpSlaveAgentListener takes us to a page that > simply says Jenkins. This system works. > http://jenkins_2:8080/tcpSlaveAgentListener takes us to a page that > simply says Jenkins. This system works. > http://jenkins_3:8080/tcpSlaveAgentListener takes us to a page that > simply says Jenkins. This system works. > > New system running 2.107 > http://jenkins_4:8080/tcpSlaveAgentListener says Page Not Found > > This is the first time I've had trouble getting a slave to connect. > > I've checked to make sure all of the plugins are there and the same as on > the other systems. > > My VM is a clone from System2. I updated my "slave launch" batch file from > > javaws http://jenkins_2:8080/computer/VM01_Win7x64/slave-agent.jnlp > to > javaws http://jenkins_4:8080/computer/VM01_Win7x64/slave-agent.jnlp > > When I run that command on the slave I get: > > Apr 11, 2018 10:13:33 AM hudson.remoting.jnlp.GuiListener$2 run > SEVERE: http://jenkins_4:8080/tcpSlaveAgentListener/ is invalid: 404 Not > Found > java.io.IOException: http://jenkins_4:8080/tcpSlaveAgentListener/ is > invalid: 404 Not Found > at > org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:204) > at hudson.remoting.Engine.innerRun(Engine.java:518) > at hudson.remoting.Engine.run(Engine.java:469) > > I am the one that set up all 4 systems. Doing side-by-side comparisons, > everything seems the same. I have entered firewall exceptions (or turned > off). I have the same JAVA on all. I have added exceptions in JAVA as > appropriate. > > The only diagnostics I can find is from CloudBees and only semi-applies to > what I am trying to diagnose. > -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/c8dde335-05be-4c94-a365-beea095be132%40googlegroups.com.
