Red Hat Bugzilla – Bug 993561
"WARNING: Failed to broadcast over UDP" appears in jenkins.log when git push change to a jenkins app
Last modified: 2015-05-14 20:33:53 EDT
Description of problem: Create jenkins server, and touch any blank file under the repo. Git push the change. And check the jenkins.log via rhc tail. We can found in the jenkins.log: WARNING: Failed to broadcast over UDP java.net.BindException: Permission denied at java.net.PlainDatagramSocketImpl.bind0(Native Method) at java.net.AbstractPlainDatagramSocketImpl.bind(AbstractPlainDatagramSocketImpl.java:95) at java.net.DatagramSocket.bind(DatagramSocket.java:376) at java.net.MulticastSocket.<init>(MulticastSocket.java:172) at java.net.MulticastSocket.<init>(MulticastSocket.java:137) at hudson.UDPBroadcastThread.<init>(UDPBroadcastThread.java:69) at jenkins.model.Jenkins.<init>(Jenkins.java:822) at hudson.model.Hudson.<init>(Hudson.java:81) at hudson.model.Hudson.<init>(Hudson.java:77) at hudson.WebAppMain$2.run(WebAppMain.java:214) Version-Release number of selected component (if applicable): devenv_3616 How reproducible: always Steps to Reproduce: 1.Create jenkins server 2.Do some changes in the git repo and push them 3.Check the jenkins.log Actual results: Some warning message appears in the jenkins.log Expected results: No such warning meesages. Additional info: Since AWS is not allowed broadcast/multicast over UDP, we should disable such modules to avoid the warning/error messages.
It looks like this commit adds support to disable it by setting a Java system property: https://github.com/jenkinsci/jenkins/commit/19f34b54d6cd69f837552a21d8adb41f3b5fba91 I think this was first introduced in Jenkins 1.514
Waiting on testing of update to latest jenkins.
Commit pushed to master at https://github.com/openshift/origin-server https://github.com/openshift/origin-server/commit/48f66cdf01510560bbf4bfda1313813da405987a bug 993561: WARNING: Failed to broadcast over UDP appears in jenkins.log when git push change to a jenkins app
The fix for this is prepared but until we move up to jenkins 1.540+ we don't have all the pieces aligned to deliver it. The version of jenkins that supports disabling UDP also requires that the openshift-jenkins-plugin needs to pass "-jar-cache $OPENSHIFT_DATA_DIR/.jenkins/cache/jars" on the slave launch to avoid putting the jar-cache in a non-writeable directory.
https://github.com/openshift/origin-server/pull/5552
Checked on devenv_4932, with disable_jenkins_udp_broadcast present, the UDP broadcast error will not show anymore. Jul 02, 2014 6:11:53 AM jenkins.InitReactorRunner$1 onAttained INFO: Completed initialization Jul 02, 2014 6:11:54 AM org.springframework.web.context.support.StaticWebApplicationContext prepareRefresh INFO: Refreshing org.springframework.web.context.support.StaticWebApplicationContext@1a3dda2: display name [Root WebApplicationContext]; startup date [Wed Jul 02 06:11:54 EDT 2014]; root of context hierarchy Jul 02, 2014 6:11:54 AM org.springframework.web.context.support.StaticWebApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@1a3dda2]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1b1786 Jul 02, 2014 6:11:54 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1b1786: defining beans [authenticationManager]; root of factory hierarchy Jul 02, 2014 6:11:54 AM org.springframework.web.context.support.StaticWebApplicationContext prepareRefresh INFO: Refreshing org.springframework.web.context.support.StaticWebApplicationContext@f4821d: display name [Root WebApplicationContext]; startup date [Wed Jul 02 06:11:54 EDT 2014]; root of context hierarchy Jul 02, 2014 6:11:54 AM org.springframework.web.context.support.StaticWebApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@f4821d]: org.springframework.beans.factory.support.DefaultListableBeanFactory@a02f4f Jul 02, 2014 6:11:54 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@a02f4f: defining beans [filter,legacy]; root of factory hierarchy Jul 02, 2014 6:11:55 AM hudson.WebAppMain$3 run INFO: Jenkins is fully up and running