ideally, on both sides, make it on one side usually is enough. El miércoles, 30 de septiembre de 2020 a las 3:22:00 UTC+2, [email protected] escribió:
> Thanks, are these setting to be applied on master side or slave or both? > > On Wednesday, September 30, 2020 at 12:15:23 AM UTC+8 [email protected] > wrote: > >> >> - Why does agent tries to connect to master when its already >> connected? >> >> That suggests half-closed connections, it means that the agent loses the >> connection with the Jenkins instance but the FIN notification never arrived >> to the Jenkins instance so the connection is open in the Jenkins instance >> side. It could be related to networks equipment and the policies that have >> for open connections, the recommendation is to tune the TCP stack to keep >> those connections open with traffic see >> https://support.cloudbees.com/hc/en-us/articles/115001416548#7tcpretransmissiontimeoutossperhapsincrease >> >> El martes, 29 de septiembre de 2020 a las 10:47:22 UTC+2, >> [email protected] escribió: >> >>> Hi Team, We are using JNLP to connect Mac agent to Linux master node. >>> >>> Jenkins agent keeps disconnecting frequently, and we are getting below >>> logs in master. >>> >>> Can you please suggest how to resolve this? What are the steps to >>> further triage the same. >>> >>> Some of the questions we are trying to answer is: >>> >>> - What is EOFException? >>> - Why does agent tries to connect to master when its already >>> connected? >>> - Why does eventually the ping / connection fails? >>> >>> We keep seeing this pattern in logs too often and too frequently. Any >>> help would be appreciated. >>> >>> Results are same even if we try any of the below options: >>> >>> - Connected using *Launch agent from Browser* >>> - Connected by *starting automator* in Mac which runs shell/zsh to >>> run agent.jar >>> - Connected by running *plist* in Mac >>> >>> * Jenkins environment:* >>> >>> - Jenkins: 2.249.1 >>> - Master Node: Linux RHEL 8.1 >>> - Master Java Version: 1.8.0_242 >>> - Slave System: macOS Catalina, Version 10.15.6 >>> - Slave Java Version: 1.8.0_261 >>> >>> *Connection #xxx failed: java.io.EOFException Sep 29, 2020 2:45:21 AM >>> INFO hudson.TcpSlaveAgentListener$ConnectionHandler run Accepted >>> JNLP4-connect connection #xxx from x.x.x.x/x.x.x.x:57215 Sep 29, 2020 >>> 2:45:21 AM >>> INFO org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer on >>> Recv[JNLP4-connect connection from x.x.x.x/x.x.x.x:57215] Refusing headers >>> from remote: <agent_name> is already connected to this master. Rejecting >>> this connection.Sep 29, 2020 2:45:31 AM >>> INFO hudson.TcpSlaveAgentListener$ConnectionHandler runConnection #xxx >>> failed: java.io.EOFException Sep 29, 2020 2:45:31 >>> AM INFO hudson.TcpSlaveAgentListener$ConnectionHandler runAccepted >>> JNLP4-connect connection #xxx from x.x.x.x/x.x.x.x:57218 Sep 29, 2020 >>> 2:45:32 AM >>> INFO org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer >>> onRecv[JNLP4-connect connection from x.x.x.x/x.x.x.x] Refusing headers from >>> remote: <agent_name> is already connected to this master. Rejecting this >>> connection.Sep 29, 2020 2:45:32 AM INFO hudson.slaves.ChannelPinger$1 >>> onDeadPing failed. Terminating the channel JNLP4-connect connection from >>> x.x.x.x/x.x.x.x:57015. java.util.concurrent.TimeoutException: Ping started >>> at 1601318492966 hasn't completed by 1601318732966 at >>> hudson.remoting.PingThread.ping(PingThread.java:134) at >>> hudson.remoting.PingThread.run(PingThread.java:90) * >>> >>> >>> >>> TIA >>> >>> >>> >> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/c0005418-b120-4bb8-939f-f12f064847dbn%40googlegroups.com.
