This is an FAQ. Solution is to disable AJP. See details in jira <https://issues.jenkins-ci.org/browse/JENKINS-33776>
Quote from above link for reference JENKINS_AJP_PORT="-1" in /etc/sysconfig/jenkins solved problem https://stackoverflow.com/questions/38157686/migrating-to-jenkins-2-1-ajp-support-is-removed-in-winstone-3-0-due-to-jetty-9/38157687#38157687?newreg=7aa149f6d35a4daba7b42a40dc52b935 在 2016年5月13日星期五 UTC+8下午6:21:37，Marcin Wieczorek写道： > > Ran into the same problem and finally found this: > https://issues.jenkins-ci.org/browse/JENKINS-33776 > > That solved it for me. > > Marcin > > On Thursday, May 12, 2016 at 2:48:45 AM UTC-7, David Aldrich wrote: >> >> Hi >> >> I have tried to upgrade our Jenkins test server from 1.656 to 2.3 by >> copying the 2.3 war to: >> >> /usr/lib/jenkins/ >> >> and restarting Jenkins using: >> >> sudo /etc/init.d/jenkins restart >> >> Now I cannot connect to Jenkins: >> >> "This site can't be reached >> jenkinstest.<snip> refused to connect." >> >> Any suggestions please? >> >> Best regards >> >> David >> >> -- 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/f710d409-474b-4708-84d4-8bec6ae8fee6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
