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Bug
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Resolution: Not A Defect
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Minor
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None
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Debian Wheezy amd64
jenkins 1.580.2 from http://pkg.jenkins-ci.org/debian-stable
% java -version
java version "1.7.0_79"
OpenJDK Runtime Environment (IcedTea 2.5.6) (7u79-2.5.6-1~deb7u1)
OpenJDK 64-Bit Server VM (build 24.79-b02, mixed mode)
Some commenters in
https://wiki.jenkins-ci.org/display/JENKINS/Jenkins+says+my+reverse+proxy+setup+is+broken
complain that when using mod_jk and no reverse proxy, the reverse proxy check does not work correctly. I am experiencing this too.
I ran the test suggested on that page and got these results
% curl -iL -e http://jenkins.example.com/manage http://jenkins.example.com/administrativeMonitor/hudson.diagnosis.ReverseProxySetupMonitor/test HTTP/1.1 302 Found Date: Thu, 08 Oct 2015 00:32:40 GMT Server: Apache Location: http://jenkins.example.com/administrativeMonitor/hudson.diagnosis.ReverseProxySetupMonitor/testForReverseProxySetup/http%3A%2F%2Fjenkins.example.com%2Fmanage/ Content-Length: 0 HTTP/1.1 404 http://jenkins.example.com/manage vs. http:%2F%2Fjenkins.example.com%2Fmanage Date: Thu, 08 Oct 2015 00:32:40 GMT Server: Apache Cache-Control: must-revalidate,no-cache,no-store Content-Length: 1646 Content-Type: text/html;charset=ISO-8859-1 <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/> <title>Error 404 http://jenkins.example.com/manage vs. http:%2F%2Fjenkins.example.com%2Fmanage</title> </head> <body><h2>HTTP ERROR 404</h2> <p>Problem accessing /administrativeMonitor/hudson.diagnosis.ReverseProxySetupMonitor/testForReverseProxySetup/http:%252F%252Fjenkins.example.com%252Fmanage/. Reason: <pre> http://jenkins.example.com/manage vs. http:%2F%2Fjenkins.example.com%2Fmanage</pre></p><hr /><i><small>Powered by Jetty://</small></i><br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> </body> </html> With this configuration
The config is
/etc/libapache2-mod-jk/workers.properties:
workers.tomcat_home=/var/lib/tomcat7
workers.java_home=/usr/lib/jvm/java-1.7.0-openjdk-amd64
ps=/
worker.list=jenkins_worker
worker.jenkins_worker.port=9009
worker.jenkins_worker.host=jenkins.example.com
worker.jenkins_worker.type=ajp13
/etc/apache2/sites-enabled/jenkins.example.com:
<VirtualHost *:80>
ServerName jenkins.example.com
ServerAlias jenkins-int.example.com
ServerAdmin web@example.com
ServerSignature Off
AllowEncodedSlashes NoDecode
JkMount /* jenkins_worker
JkLogLevel info
JkRequestLogFormat "%w %V %T"
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
JkLogFile /var/log/apache2/vhosts/jenkins.example.com/mod_jk.log
LogLevel warn
CustomLog /var/log/apache2/vhosts/jenkins.example.com/access.log backend_vhost
ErrorLog /var/log/apache2/vhosts/jenkins.example.com/error.log
</VirtualHost>
/etc/apache2/mods-enabled/jk.conf:
<IfModule jk_module>
JkWorkersFile /etc/libapache2-mod-jk/workers.properties
JkLogFile /var/log/apache2/mod_jk.log
JkLogLevel info
JkShmFile /var/log/apache2/jk-runtime-status
JkWatchdogInterval 60
<Location /jk-status>
JkMount jk-status
Order deny,allow
Deny from all
Allow from 127.0.0.1
</Location>
<Location /jk-manager>
JkMount jk-manager
Order deny,allow
Deny from all
Allow from 127.0.0.1
</Location>
</IfModule>
/etc/default/jenkins:
NAME=jenkins
JAVA=/usr/bin/java
JAVA_ARGS="-Djava.awt.headless=true" # Allow graphs etc. to work even when an X server is present
JAVA_ARGS="$JAVA_ARGS -Dhudson.DNSMultiCast.disabled=true"
PIDFILE=/var/run/jenkins/jenkins.pid
JENKINS_USER=jenkins
JENKINS_GROUP=jenkins
JENKINS_WAR=/usr/share/jenkins/jenkins.war
JENKINS_HOME=/var/lib/jenkins
RUN_STANDALONE=true
JENKINS_LOG=/var/log/jenkins/$NAME.log
MAXOPENFILES=8192
HTTP_PORT=-1
AJP_PORT=9009
PREFIX=/jenkins
HTTP_ADDR=127.0.0.1
JENKINS_ARGS="--webroot=/var/cache/jenkins/war -httpListenAddress=$HTTP_ADDR --httpPort=$HTTP_PORT --ajp13Port=$AJP_PORT"
In the jenkins /configure page, the URL is http://jenkins.example.com/