Jenkins on Amazon Linux(EC2 Instance)/CentOS
I have written a useful blog in very simple and understandable way to install the jenkins on Amazon Linux(EC2 Instance)/CentOS, below are the steps and command that need to install and run jenkins on above Linux flavor.
Step 1: Best practice to update Linux before installing the application but it is optional.
- sudo yum install epel-release
- sudo yum update
- sudo reboot
Step 2: Install Java 8 and make it in operation, if java 7 is there then jenkins would not work, java8 needs to be installed and java 7 need to be removed.
- sudo yum install -y java-1.8.0-openjdk.x86_64
- sudo /usr/sbin/alternatives --set java /usr/lib/jvm/jre-1.8.0-openjdk.x86_64/bin/java
- sudo /usr/sbin/alternatives --set javac /usr/lib/jvm/jre-1.8.0-openjdk.x86_64/bin/javac
- sudo yum remove java-1.7
Step 3: Set the Environment for JVM.
- sudo cp /etc/profile /etc/profile_backup
- echo 'export JAVA_HOME=/usr/lib/jvm/jre-1.8.0-openjdk' | sudo tee -a /etc/profile
- echo 'export JRE_HOME=/usr/lib/jvm/jre' | sudo tee -a /etc/profile
- source /etc/profile
Step 4: Verify Java version and Java environment.
- java -version
- echo $JAVA_HOME
- echo $JRE_HOME
Step 5: Install Jenkins on Amazon Linux/CentOS
- cd ~
- sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
- sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
- yum install jenkins
- sudo service jenkins enable
- sudo service jenkins start
- sudo service jenkins status
Step 6: Run your Jenkins via web browser.
- http://server_ip:8080
Step 7: Unlock jenkins by supplying password created during installation, To find the password "sudo cat /var/lib/jenkins/secrets/initialAdminPassword"
Step 8: Now all the steps done, just click on install suggested plugins to get started.
Now you have done the job, I want to give some more additional useful details here.
Command to run jenkins on different port rather than default: java -jar jenkins.war --httpPort=8081
Home directory for jenkins on Amazon Linux/Centos: /usr/lib/jenkins
Config file: /etc/sysconfig/jenkins
/var/lib/jenkins/
jenkins user config file path: /var/lib/jenkins/users/user_name
