CentOS 7 Detailed explanation of Jenkins installation process

Installing Jenkins through Yum

Step 1 Install

# yum  Source import 
wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
#  Import key 
rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
#  Installation 
yum install -y jenkins

2. Open the port

#  Ports can be found in the  /etc/sysconfig/jenkins  Modified in the file, the default is  8080
firewall-cmd --add-port=8080/tcp --permanent
firewall-cmd --reload

3. Configure the Java path

#  Modify  jenkins  Startup script 
vim /etc/init.d/jenkins

#  Modify  candidates  Increase  java  Optional path: /usr/java/jdk1.8.0_181/bin/java
candidates="
/etc/alternatives/java
/usr/lib/jvm/java-1.8.0/bin/java
/usr/lib/jvm/jre-1.8.0/bin/java
/usr/lib/jvm/java-1.7.0/bin/java
/usr/lib/jvm/jre-1.7.0/bin/java
/usr/bin/java
/usr/java/jdk1.8.0_181/bin/java
"

4. Start Jenkins and set up boot

# Overloaded service (due to the previous modification  Jenkins  Startup script) 
systemctl daemon-reload

# Start  Jenkins  Services 
systemctl start jenkins

# Will  Jenkins  The service is set to boot 
# Due to  Jenkins  No  Native Service , so you need to use  chkconfig  Orders instead of  systemctl  Command 
/sbin/chkconfig jenkins on

5. Jenkins initialization

Use cat /var/lib/jenkins/secrets/initialAdminPassword Check the password, enter it in Jenkins management page to unlock it, and then you can visualize it!

The first boot may encounter page 1 showing "Please wait while Jenkins is getting ready to work...", edit /var/lib/jenkins/hudson.model.UpdateCenter.xml Document, amend "https://updates. jenkins. io/update-center. json" to "http://mirror.xmission.com/jenkins/updates/update-center.json".

6. Others

6.1 Set the time zone of Jenkins to Beijing time

Open System Administration- > "Script Command Line" runs the following command

System.setProperty('org.apache.commons.jelly.tags.fmt.timeZone', 'Asia/Shanghai')