| I can reproduce it every time. I just access the Jenkins URL with "/safeRestart", confirm restart and keep reloading the page every second. It shows the error approximately after 5 to 10 reloads. It's interesting that I don't see any stack trace in the console log. Jenkins 2.182 in a Docker container. 2019-06-28 21:20:09.963+0000 [id=318] INFO jenkins.model.Jenkins$23#run: Restart in 10 seconds 2019-06-28 21:20:19.964+0000 [id=318] INFO jenkins.model.Jenkins$23#run: Restarting VM as requested by roskinp 2019-06-28 21:20:19.965+0000 [id=318] INFO jenkins.model.Jenkins#cleanUp: Stopping Jenkins 2019-06-28 21:20:19.983+0000 [id=318] INFO jenkins.model.Jenkins$18#onAttained: Started termination 2019-06-28 21:20:19.993+0000 [id=318] INFO jenkins.model.Jenkins$18#onAttained: Completed termination 2019-06-28 21:20:19.993+0000 [id=318] INFO jenkins.model.Jenkins#_cleanUpDisconnectComputers: Starting node disconnection 2019-06-28 21:20:21.011+0000 [id=318] INFO jenkins.model.Jenkins#_cleanUpShutdownPluginManager: Stopping plugin manager 2019-06-28 21:20:21.026+0000 [id=318] INFO jenkins.model.Jenkins#_cleanUpPersistQueue: Persisting build queue 2019-06-28 21:20:21.028+0000 [id=318] INFO jenkins.model.Jenkins#_cleanUpAwaitDisconnects: Waiting for node disconnection completion 2019-06-28 21:20:21.033+0000 [id=318] INFO jenkins.model.Jenkins#cleanUp: Jenkins stopped Running from: /usr/share/jenkins/jenkins-stable.war webroot: EnvVars.masterEnvVars.get("JENKINS_HOME") 2019-06-28 21:20:23.482+0000 [id=1] INFO org.eclipse.jetty.util.log.Log#initialized: Logging initialized @595ms to org.eclipse.jetty.util.log.JavaUtilLog 2019-06-28 21:20:23.606+0000 [id=1] INFO winstone.Logger#logInternal: Beginning extraction from war file 2019-06-28 21:20:23.642+0000 [id=1] WARNING o.e.j.s.handler.ContextHandler#setContextPath: Empty contextPath 2019-06-28 21:20:23.704+0000 [id=1] INFO org.eclipse.jetty.server.Server#doStart: jetty-9.4.z-SNAPSHOT; built: 2019-05-02T00:04:53.875Z; git: e1bc35120a6617ee3df052294e433f3a25ce7097; jvm 1.8.0_181-8u181-b13-2~deb9u1-b13 2019-06-28 21:20:24.033+0000 [id=1] INFO o.e.j.w.StandardDescriptorProcessor#visitServlet: NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspServlet 2019-06-28 21:20:24.087+0000 [id=1] INFO o.e.j.s.s.DefaultSessionIdManager#doStart: DefaultSessionIdManager workerName=node0 2019-06-28 21:20:24.088+0000 [id=1] INFO o.e.j.s.s.DefaultSessionIdManager#doStart: No SessionScavenger set, using defaults 2019-06-28 21:20:24.091+0000 [id=1] INFO o.e.j.server.session.HouseKeeper#startScavenging: node0 Scavenging every 660000ms Jenkins home directory: /var/jenkins_home found at: EnvVars.masterEnvVars.get("JENKINS_HOME") Here's what I see on the page. The same Jenkins container. |