CentOS 7 下Jenkins installation and deployment tutorial

One, foreword

1. What is Jenkins?

Jenkins is an open source platform that supports automated build, deployment, and other tasks. It is basically an indispensable tool for continuous integration (CI) and continuous publishing (CD).

Liverpoolfc.tv: Jenkins. IO /

2. Environmental information of this article

3. Preparation

• Install the JDK

Reference: juejin. Cn/post / 684490…

After deployment, the JDK root directory is /usr/java/jdk1.8.0_181/

Two, Jenkins installation

1. Yum install

• Yum source import

# add Yum source
sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo

# import key
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
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• The installation

sudo yum install jenkins
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2. Open ports

The default listening port for the Jenkins site is 8080

sudo firewall-cmd --add-port=8080/tcp --permanent
sudo firewall-cmd --reload
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Method 2 vim /etc/sysconfig/jenkins# monitor port
JENKINS_PORT="8080"Copy the code

To avoid all sorts of permissions issues, use root directly here

Example Change the user name to root

vim /etc/sysconfig/jenkins

# change configuration
$JENKINS_USER="root"Copy the code

Modifying Directory Permissions

chown -R root:root /var/lib/jenkins
chown -R root:root /var/cache/jenkins
chown -R root:root /var/log/jenkinsCopy the code

restart

service jenkins restart
ps -ef | grep jenkins

Reload all modified configuration files
sudo systemctl daemon-reload
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3. Configure optional Java paths

Because the Jenkins default Java optional path does not contain the JDK path we deployed, it is necessary to configure it here, otherwise the Jenkins service will fail to start

# Change the Jenkins startup script
sudo vi /etc/init.d/jenkins

/usr/ Java /jdk1.8.0_181/bin/ Java
candidates="/ etc/alternatives/Java/usr/lib/JVM/Java - 1.8.0 comes with/bin/Java/usr/lib/JVM/jre - 1.8.0 comes with/bin/Java /usr/lib/jv/jre-1.7.0 /bin/java /usr/lib/jv/jre-1.7.0 /bin/java /usr/bin/java /usr/jv/jdk1.8.0_181 /bin/java"
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4. Start Jenkins and set Jenkins to boot

# Reload service (due to previous changes to Jenkins startup script)
sudo systemctl daemon-reload

# Start Jenkins service
sudo systemctl start jenkins

Set Jenkins service to boot
# Since Jenkins is not a Native Service, use the chkconfig command instead of the systemctl command
sudo /sbin/chkconfig jenkins on
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Enter http://< IP address>:8080 in your browser to access Jenkins

4. Jenkins initialization

1. Unlock Jenkins

Querying the default password of User root……