1. 添加Jenkins的源（repository）:
$ sudo wget -O /etc/yum.repos.d/jenkins.repo http://jenkins-ci.org/redhat/jenkins.repo
$ sudo rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.key
2. 安装/检查JDK:
$ java --version
$ sudo yum install java-1.6.0-openjdk
3. 安装Jenkins：
$ sudo yum install jenkins
安装完成后，有如下相关目录：
（3.1）/usr/lib/jenkins/：jenkins安装目录，WAR包会放在这里。
$ cd /usr/lib/jenkins $ ll -rw-r--r-- 1 root root 52891723 Feb 27 00:13 jenkins.war
(3.2) /etc/sysconfig/jenkins：jenkins配置文件，“端口”，“JENKINS_HOME”等都可以在这里配置。内容如下：
## Path: Development/Jenkins ## Description: Configuration for the Jenkins continuous build server ## Type: string ## Default: "/var/lib/jenkins" ## ServiceRestart: jenkins # # Directory where Jenkins store its configuration and working # files (checkouts, build reports, artifacts, ...). # JENKINS_HOME="/var/lib/jenkins" ## Type: string ## Default: "" ## ServiceRestart: jenkins # # Java executable to run Jenkins # When left empty, we'll try to find the suitable Java. # JENKINS_JAVA_CMD="" ## Type: string ## Default: "jenkins" ## ServiceRestart: jenkins # # Unix user account that runs the Jenkins daemon # Be careful when you change this, as you need to update # permissions of $JENKINS_HOME and /var/log/jenkins. # JENKINS_USER="jenkins" ## Type: string ## Default: "-Djava.awt.headless=true" ## ServiceRestart: jenkins # # Options to pass to java when running Jenkins. # JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true" ## Type: integer(0:65535) ## Default: 8080 ## ServiceRestart: jenkins # # Port Jenkins is listening on. # Set to -1 to disable # JENKINS_PORT="8080" ## Type: integer(0:65535) ## Default: 8009 ## ServiceRestart: jenkins # # Ajp13 Port Jenkins is listening on. # Set to -1 to disable # JENKINS_AJP_PORT="8009" ## Type: integer(1:9) ## Default: 5 ## ServiceRestart: jenkins # # Debug level for logs -- the higher the value, the more verbose. # 5 is INFO. # JENKINS_DEBUG_LEVEL="5" ## Type: yesno ## Default: no ## ServiceRestart: jenkins # # Whether to enable access logging or not. # JENKINS_ENABLE_ACCESS_LOG="no" ## Type: integer ## Default: 100 ## ServiceRestart: jenkins # # Maximum number of HTTP worker threads. # JENKINS_HANDLER_MAX="100" ## Type: integer ## Default: 20 ## ServiceRestart: jenkins # # Maximum number of idle HTTP worker threads. # JENKINS_HANDLER_IDLE="20" ## Type: string ## Default: "" ## ServiceRestart: jenkins # # Pass arbitrary arguments to Jenkins. # Full option list: java -jar jenkins.war --help # JENKINS_ARGS=""
（3.3）/var/lib/jenkins/：默认的JENKINS_HOME。目录结构如下：
$ cd /var/lib/jenkins/ $ ls -lst total 216 4 -rw-r--r-- 1 jenkins jenkins 0 Mar 18 23:59 Fingerprint cleanup.log 4 -rw-r--r-- 1 jenkins jenkins 0 Mar 18 18:54 Workspace clean-up.log 8 drwxr-xr-x 180 jenkins jenkins 4096 Mar 18 17:04 fingerprints 8 -rw-r--r-- 1 jenkins jenkins 1636 Mar 18 16:41 config.xml 8 -rw-r--r-- 1 jenkins jenkins 903 Mar 18 16:41 hudson.maven.MavenModuleSet.xml 8 -rw-r--r-- 1 jenkins jenkins 1122 Mar 18 16:41 hudson.plugins.sonar.SonarPublisher.xml 8 -rw-r--r-- 1 jenkins jenkins 205 Mar 18 16:41 hudson.plugins.sonar.SonarRunnerInstallation.xml 8 -rw-r--r-- 1 jenkins jenkins 196 Mar 18 16:41 hudson.scm.CVSSCM.xml 8 -rw-r--r-- 1 jenkins jenkins 692 Mar 18 16:41 hudson.scm.SubversionSCM.xml 8 -rw-r--r-- 1 jenkins jenkins 145 Mar 18 16:41 hudson.tasks.Ant.xml 8 -rw-r--r-- 1 jenkins jenkins 187 Mar 18 16:41 hudson.tasks.Mailer.xml 8 -rw-r--r-- 1 jenkins jenkins 330 Mar 18 16:41 hudson.tasks.Maven.xml 8 -rw-r--r-- 1 jenkins jenkins 76 Mar 18 16:41 hudson.tasks.Shell.xml 8 -rw-r--r-- 1 jenkins jenkins 215 Mar 18 16:41 hudson.triggers.SCMTrigger.xml 8 -rw-r--r-- 1 jenkins jenkins 264 Mar 18 16:41 jenkins.model.JenkinsLocationConfiguration.xml 8 -rw-r--r-- 1 jenkins jenkins 907 Mar 18 16:29 nodeMonitors.xml 8 -rw-r--r-- 1 jenkins jenkins 159 Mar 18 16:29 hudson.model.UpdateCenter.xml 8 -rw-r--r-- 1 jenkins jenkins 46 Mar 18 16:29 queue.xml.bak 8 drwxr-xr-x 2 jenkins jenkins 4096 Mar 18 16:24 updates 4 -rw-r--r-- 1 jenkins jenkins 0 Mar 16 10:27 Connection Activity monitoring to slaves.log 8 drwxr-xr-x 6 jenkins jenkins 4096 Mar 13 18:24 workspace 8 drwxr-xr-x 13 jenkins jenkins 4096 Mar 13 17:59 jobs 8 drwx------ 2 jenkins jenkins 4096 Feb 28 11:16 secrets 8 -rw-r--r-- 1 jenkins jenkins 165 Feb 27 13:29 sonar.xml 8 drwxr-xr-x 14 jenkins jenkins 4096 Feb 27 13:29 plugins 8 -rw------- 1 jenkins jenkins 1679 Feb 27 12:12 identity.key 8 drwxr-xr-x 2 jenkins jenkins 4096 Feb 27 12:12 userContent 8 -rw-r--r-- 1 jenkins jenkins 64 Feb 27 12:12 secret.key 4 -rw-r--r-- 1 jenkins jenkins 0 Feb 27 12:12 secret.key.not-so-secret
（3.4）/var/log/jenkins/jenkins.log：Jenkins日志文件。
4. 启动Jenkins
$ sudo service jenkins start
有可能出现错误：“Starting Jenkins -bash: /usr/bin/java: No such file or directory”。表示找不到Jenkins找不到java。
这时就需要“vi /etc/init.d/jenkins”，把java路径加上：
64 # Search usable Java. We do this because various reports indicated
65 # that /usr/bin/java may not always point to Java 1.5
66 # see http://www.nabble.com/guinea-pigs-wanted-----Hudson-RPM-for-RedHat-Linux-td25673707.html
67 for candidate in /etc/alternatives/java /usr/lib/jvm/java-1.6.0/bin/java /usr/lib/jvm/jre-1.6.0/bin/java /usr/lib/jvm/java-1 .5.0/bin/java /usr/lib/jvm/jre-1.5.0/bin/java /usr/bin/java /usr/j2sdk/bin/java
68 do
69 [ -x "$JENKINS_JAVA_CMD" ] && break
70 JENKINS_JAVA_CMD="$candidate"
71 done
5. 登录Jenkins
如果没有特别配置端口，使用http://<ip address>:8080/登录Jenkins，并进行相关配置（插件安装、权限配置、View/Job创建等等）。
