Centos installation Java (JDK) and Jenkins

One

Download JDK

Http://www.oracle.com/technetwork/java/javase/downloads/index.html

I chose the tar package to install

Jdk-8u25-linux-x64.gz

Upload the JDK installation package to the server

Unzip to get folder Jdk1.8.0_25

MV JDK1.8.0_25/USR/LOCAL/JDK

(Put Java in the/usr/local/directory and rename the JDK.) Personal habits)

Then add the environment variable

Vim/etc/profile

Add at the end of the file

Export JAVA_HOME=/USR/LOCAL/JDK

Export classpath=.: $JAVA _home/jre/lib/rt.jar: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

Export path= $PATH: $JAVA _home/bin

Save exit

Source/etc/profile

Re-loaded into force.

Two

Add yum sources to your website

sudo wget-o/etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.reposudo rpm--import/http Pkg.jenkins-ci.org/redhat/jenkins-ci.org.key

Then direct yum installation

Yum Install Jenkins

or download Jenkins ' rpm package directly

http://pkg.jenkins-ci.org/redhat/

Uploading the server, performing the installation

RPM-IVH jenkins-1.589-1.1.noarch.rpm

After the default installation.

The relevant directory for Jenkins

[[email protected]/]# find. -name Jenkins

./usr/lib/jenkins

./etc/logrotate.d/jenkins

./etc/sysconfig/jenkins

./etc/rc.d/init.d/jenkins

./var/lib/jenkins

./var/log/jenkins

./var/cache/jenkins

Configuration modifications

Add the path to Java in/etc/rc.d/init.d/jenkins (or modify/etc/init.d/jenkins This is the previous soft connection)

Vim/etc/rc.d/init.d/jenkins

Add the previously installed JDK path in the candidates option

Candidates= "

/usr/lib/jvm/jre-1.8.0/bin/java

/usr/bin/java

/usr/local/jdk/bin/java

"

Start with service Jenkins start

If you need to modify the configuration, you can modify it in the/etc/sysconfig/jenkins file. Restart takes effect

Centos installation Java (JDK) and Jenkins