Installing and Configuring Jenkins Build Server

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**[[Jenkins>>http://jenkins-ci.org/]]** is an "extensible continuous integration server". It monitors repeated executions of jobs, such as building software projects, and can be used to build WebObjects applications and frameworks. Jenkins is an open source project and can be used at no cost. It is hosted on [[Github.com>>https://github.com/jenkinsci]].

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An introductory presentation on building WebObjects projects with Hudson (the predecessor to Jenkins) was given by Mike Schrag at WOWODC-West in 2009, and the video can be [[purchased from wocommunity.org>>http://www.wocommunity.org/apps/WebObjects/WOCommunity.woa/wa/recordings]].

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=== Upgrading from Hudson ===

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Switching from Hudson to Jenkins is straight-forward since Hudson was the foundation that Jenkins was forked from. jenkins-ci.org has a [[wiki entry>>https://wiki.jenkins-ci.org/display/JENKINS/Upgrading+from+Hudson+to+Jenkins]] to help with the change.

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=== Stand-Alone Mac OS X Setup ===

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1. Download the Jenkins Binary Installer from the [[Jenkins Website>>http://jenkins-ci.org/]].

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The direct link to get the latest installer is: [[http://mirrors.jenkins-ci.org/osx/latest]]. This will download a standard OS X Installer Package named ##jenkins-n.nnn.pkg##.

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1. Run the installer

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[[image:JenkinsInstaller.png]]

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1. Restart your computer

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This is required because the current version of Jenkins does not create the its directory until it launches after you restart you computer.

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1. Point your browser to: [[http://localhost:8080/]]

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1. Start setting up jobs (Instructions from WOWODC2011 Coming Soon)

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=== Stand-Alone CentOS/RedHat/Amazon Linux ===

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The easiest way to install Jenkins on a Fedora/RedHat/CentOS/Amazon Linux is by using [[Yum>>http://en.wikipedia.org/wiki/Yellow_dog_Updater,_Modified]]. The Jenkins project have a Yum repository and [[complete instructions>>https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins+on+RedHat+distributions]] on how to add the repository + install Jenkins the first time.

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You can also manually install Jenkins from a RPM. To do so:

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1. Download the Jenkins Binary Installer from the [[Jenkins Website>>http://pkg.jenkins-ci.org/redhat/]].

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1. If using the .rpm, install it with 

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rpm -install jenkins-VERSION-NUMBER.noarch.rpm

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1. To start Jenkins:

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service jenkins on

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1. Point your browser to: [[http://yourserver:8080]]

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1. The Jenkins data directory, where the jobs and config are, is : /var/lib/jenkins

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The starting script is at: /etc/init.d/jenkins

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Jenkins (the .war) is installed at: /usr/lib/jenkins/

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1. To upgrade Jenkins, do the same step as installation, but do -upgrade instead of -install:

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rpm -upgrade jenkins-VERSION-NUMBER.noarch.rpm

=== Using SSL ===

Setting up SSL for Jenkins is surprisingly easy. The following is originally from the [[SSL Setup Options>>http://jenkins.361315.n4.nabble.com/SSL-Setup-Options-td954261.html]] page on nabble.com:

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1. Create a selfsigned test SSL certificate. 

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keytool genkey keyalg RSA alias selfsigned keystore keystore.jks -storepass ToPSecRet321 dname "cn=localhost"

1. Launch Jenkins.

java -jar jenkins.war --httpPort=-1 --httpsPort=8080 --httpsKeyStore=keystore.jks --httpsKeyStorePassword=ToPSecRet321

1. Launch browser 

Open "https:~/~/localhost:8080" in browser. You might get a browser warning, because the certificate is not signed by a known certificate authority. Communication is SSL-encrypted nevertheless.

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The port has changed from the original instructions. That was required on Mac OS X because of permissions. Also, it's worth noting that the keytool asks for a second password for the private key of the ssl certificate. We are using the same password as the keystore password and everything works. It is unclear if that makes a difference.

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=== Servlet Container Installation on Mac OS X (10.5, 10.6) ===

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1. Install Tomcat from [[http://www.macports.org]] with the command

sudo /opt/local/bin/port install tomcat6

1. Create an administrative user in ##/opt/local/share/java/tomcat6/conf/tomcat-users.xml##.

<?xml version='1.0' encoding='utf-8'?>

<tomcat-users>

</tomcat-users>

Don't forget to change the username and password after you have finished checking out the build server and start using it in production.

1. Start Tomcat.

sudo launchctl load -w /Library/LaunchDaemons/org.macports.tomcat6.plist

1. [[Download Jenkins>>http://mirrors.jenkins-ci.org/war/latest/jenkins.war]], saving ##jenkins.war## somewhere for later.

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1. Create a folder for Jenkins to work in: ##/opt/local/var/db/jenkins##

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1. Change ownership of that folder: ##chown www:_www /opt/local/var/db/jenkins##

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1. Add the following to ##/opt/local/share/java/tomcat6/conf/setenv.local##:

export JENKINS_HOME=/opt/local/var/db/jenkins

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export JAVA_OPTS=-Djava.awt.headless=true

1. Install Jenkins in Tomcat: go to [[http://localhost:8080]], login with the user and password that you have created in ##tomcat-users.xml##, and upload ##jenkins.war## to the Tomcat server.

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1. Goto [[http://localhost:8080/jenkins]] and you can start configuring your Jenkins build server.

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=== {{color value="#000000"}}{*}Servlet Container Installation on Mac OS X Server (10.6)*{{/color}} ===

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1. Tomcat is by default installed on Mac OS X Server.

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1. Create an administrative user in ##/Library/Tomcat/conf/tomcat-users.xml##.

<?xml version='1.0' encoding='utf-8'?>

<tomcat-users>

</tomcat-users>

{color:#000000}Don't forget to change the username and password after you have finished checking out the build server and start using it in production. {color}

1. The way to start it depends on the version. The current way is to go to the Web Settings in Server Admin, Settings, General, check the Tomcat checkbox. Restart the WebServer. 

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1. [[Download Jenkins>>http://mirrors.jenkins-ci.org/war/latest/jenkins.war]], saving ##jenkins.war## somewhere for later.

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1. Create a folder for Jenkins to work in: ##/Library/Jenkins##

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1. Change ownership of that folder: ##chown appserver:sys /Library/Jenkins##

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1. Add the following to ##/Library/Tomcat/bin/setenv.sh##:

export JENKINS_HOME=/Library/Jenkins

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export JAVA_OPTS=-Djava.awt.headless=true

1. Make sure that you are using UTF-8 in the Connector, by adding ##URIEncoding="UTF-8"## to the Connector in ##/Library/tomcat/conf/server.xml## as shown here:

<Connector port="8080" protocol="HTTP/1.1"

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connectionTimeout="20000"

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redirectPort="8443" URIEncoding="UTF-8"/>

1. Install Jenkins in Tomcat: go to [[http://localhost:8080]], login with the user and password that you have created in tomcat-users.xml, and upload jenkins.war to the Tomcat server.

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1. Goto [[http://localhost:8080/jenkins]] and you can start configuring your Jenkins build server.

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== Building WO Apps ==

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* Check out [[Installing and Configuring Jenkins Build Server^setupWorkspace.sh]]

== Jenkins ==

After Jenkins is installed and started, you will need to install at the very minimum two plugins: [[Multiple SCMs>>https://wiki.jenkins-ci.org/display/JENKINS/Multiple+SCMs+Plugin]] and [[Git>>https://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin]]. They are required if you need to build projects by using the WOJenkins templates. If your projects are under another SCM like Subversion or CVS, you also need to install Jenkins for it.

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== Building projects ==

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See [[WO:Configuring jobs in Jenkins]]

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