centos installation jenkins

Table of contents

1. Install jdk

2. Install maven

3. Install jenkins

Official website address: Jenkins

Installed paths in the jenkins server: jdk, git, maven

1. Install jdk

First retrieve the list containing java

yum list java*   

Retrieve the list for 1.8

yum list java-1.8* 

Install all files for 1.8.0

yum install java-1.8.0-openjdk* -y

Use the command to check whether the installation is successful

java -version

2. Install maven

1. download

wget https://archive.apache.org/dist/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz

2. Unzip

tar -zxvf apache-maven-3.6.3-bin.tar.gz

3. Configuration variable environment

Edit vim /etc/profile and enter the following:

export MAVEN_HOME=/root/data/apache-maven-3.6.3 
export MAVEN_HOME 
export PATH=$PATH:$MAVEN_HOME/bin

4. Make the configuration effective

source /etc/profile

5. Check the version information to see if the installation is successful. The success is as follows:

mvn -v

6. Configure maven local warehouse path

Enter the conf directory of the decompressed apache-maven-3.6.3 and edit the settings.xml configuration file:

cd apache-maven-3.6.3/conf

7. Edit the settings.xml file:

vim settings.xml

8. Configure the Alibaba Cloud image download address

Find the mirrors tag and add the Alibaba Cloud mirror download address:

<mirror> 
	<id>alimaven</id> 
	<name>aliyun maven</name> 
	<url>http://maven.aliyun.com/nexus/content/groups/public/</url> 
	<mirrorOf>central</mirrorOf> 
</mirror>

Save and exit settings.xml

wq!

3. Install Git

yum -y install git

default path

/usr/bin/git

4. Install jenkins

Official website address: Jenkins

1. Use the wget command to download the Jenkins rpm file:

wget https://repo.huaweicloud.com/jenkins/redhat-stable/jenkins-2.190.3-1.1.noarch.rpm

2. Install jenkins using rpm -ivh command

rpm -ivh jenkins-2.190.3-1.1.noarch.rpm

3. Start the jenkins service

systemctl start jenkins

4. Check jenkins status

systemctl status jenkins

Precautions

如果启动成功不能访问，查看防火墙或者云服务器安全组开放对应端口

1. Check the firewall status:

systemctl status firewalld

Note: You can see "active (running)" below, which means the firewall has been turned on.

2. Turn off firewall

systemctl stop firewalld

3. Check the firewall status:

Note: If you see "inactive (dead)" below, it means that the firewall has been turned off.

4. Enter ip+8080 in the browser to visit:

View password:

systemctl stop firewalld

Jenkins start

#systemctl start jenkins

Restart

systemctl restart jenkins

stop

systemctl stop jenkins

View jenkins process

ps -ef|grep jenkins

jenkins port modification

The degree should not be less than 2000

vim /usr/lib/systemd/system/jenkins.service
 
# 修改为想要的端口
Environment="JENKINS_PORT=8989"
 
# 重新加载配置文件
systemctl daemon-reload

Modify jenkins memory

vi /etc/sysconfig/jenkins

turn upJENKINS_JAVA_OPTIONS="-Djava.awt.headless"

changed to

JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true -Xms256m -Xmx512m -XX:MaxNewSize=256m -XX:MaxPermSize=256m"