Jenkins部署与基础配置
Jenkins是一款开源 CI&CD 软件，用于自动化各种任务，包括构建、测试和部署软件。
Jenkins 支持各种运行方式，可通过系统包、Docker 或者通过一个独立的 Java 程序
配置java环境并部署jenkins
安装jenkins
java环境配置
jenkins基于JAVA实现，安装jenkins前需要先安装 JDK
#安装openjdk
[root@ubuntu1804 ~]#apt update
[root@ubuntu1804 ~]#apt -y install openjdk-8-jdk
[root@ubuntu1804 ~]#java -version
openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-8u242-b08-0ubuntu3~18.04-b08)
OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)
#或者安装oracle的jdk
root@jenkins:/usr/local/src# tar xvf jdk-8u192-linux-x64.tar.gz
root@jenkins:/usr/local/src# ln -sv /usr/local/src/jdk1.8.0_192/ /usr/local/jdk
root@jenkins:/usr/local/src# ln -sv /usr/local/jdk/bin/java /usr/bin/ #java命令软连接
root@jenkins:/usr/local/src# vim /etc/profile
export JAVA_HOME=/usr/local/jdk
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar
root@jenkins:/usr/local/src# source /etc/profile
root@jenkins:/usr/local/src# java -version
java version "1.8.0_192"
Java(TM) SE Runtime Environment (build 1.8.0_192-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.192-b12, mixed mode)安装jenkins
[root@ubuntu1804 ~]#wget https://pkg.jenkins.io/debian-stable/binary/jenkins_2.204.4_all.deb
[root@ubuntu1804 ~]#apt install daemon
[root@ubuntu1804 ~]#dpkg -i jenkins_2.204.4_all.deb
[root@ubuntu1804 ~]#systemctl status jenkins
● jenkins.service - LSB: Start Jenkins at boot time
Loaded: loaded (/etc/init.d/jenkins; generated)
Active: active (exited) since Thu 2020-03-05 15:41:27 CST; 34s ago
Docs: man:systemd-sysv-generator(8)
Tasks: 0 (limit: 2293)
CGroup: /system.slice/jenkins.service
Mar 05 15:41:25 ubuntu1804.magedu.org systemd[1]: Starting LSB: Start Jenkins at boot time...
Mar 05 15:41:25 ubuntu1804.magedu.org jenkins[11662]: Correct java version found
Mar 05 15:41:25 ubuntu1804.magedu.org jenkins[11662]: * Starting Jenkins Automation Server jenkins
Mar 05 15:41:25 ubuntu1804.magedu.org su[11693]: Successful su for jenkins by root
Mar 05 15:41:25 ubuntu1804.magedu.org su[11693]: + ??? root:jenkins
Mar 05 15:41:26 ubuntu1804.magedu.org su[11693]: pam_unix(su:session): session opened for user jenkins by (uid
Mar 05 15:41:26 ubuntu1804.magedu.org su[11693]: pam_unix(su:session): session closed for user jenkins
Mar 05 15:41:27 ubuntu1804.magedu.org jenkins[11662]: ...done.
Mar 05 15:41:27 ubuntu1804.magedu.org systemd[1]: Started LSB: Start Jenkins at boot time.
[root@ubuntu1804 ~]#ps aux|grep jenkins
jenkins 11694 0.0 0.3 76620 7532 ? Ss 15:41 0:00 /lib/systemd/systemd --user
jenkins 11695 0.0 0.1 111980 2676 ? S 15:41 0:00 (sd-pam)
jenkins 11708 0.0 0.0 20388 184 ? S 15:41 0:00 /usr/bin/daemon --name=jenkins --inherit --env=JENKINS_HOME=/var/lib/jenkins --output=/var/log/jenkins/jenkins.log --pidfile=/var/run/jenkins/jenkins.pid -- /usr/bin/java -Djava.awt.headless=true -jar /usr/share/jenkins/jenkins.war --webroot=/var/cache/jenkins/war --httpPort=8080
jenkins 11709 28.2 11.4 2561460 231920 ? Sl 15:41 0:31 /usr/bin/java -Djava.awt.headless=true -jar /usr/share/jenkins/jenkins.war --webroot=/var/cache/jenkins/war --httpPort=8080
root 12465 0.0 0.0 14428 1156 pts/0 S+ 15:43 0:00 grep --color=auto jenkins
[root@ubuntu1804 ~]#ss -ntlp |grep java
LISTEN 0 50 *:8080 *:* users:(("java",pid=11709,fd=164))
#查看日志
[root@jenkins-ubunutu1804 ~]#cat /var/log/jenkins/jenkins.log修改jenkins 服务的用户
默认jenkins服务使用jenkins 帐号启动，将文件复制到生产服务器可能会遇到权限问题，因此修改为root用户
[root@jenkins-ubunutu1804 ~]#vim /etc/default/jenkins
JENKINS_USER=root
JENKINS_GROUP=root
[root@jenkins-ubunutu1804 ~]#systemctl restart jenkins
[root@jenkins-ubunutu1804 ~]#ps aux|grep jenkins
root 121354 0.0 0.0 20388 188 ? S 18:22 0:00 /usr/bin/daemon --name=jenkins --inherit --env=JENKINS_HOME=/var/lib/jenkins --output=/var/log/jenkins/jenkins.log --pidfile=/var/run/jenkins/jenkins.pid -- /usr/bin/java -Djava.awt.headless=true -jar /usr/share/jenkins/jenkins.war --webroot=/var/cache/jenkins/war --httpPort=8080
root 121355 3.2 20.0 3090932 403664 ? Sl 18:22 0:29 /usr/bin/java -Djava.awt.headless=true -jar /usr/share/jenkins/jenkins.war --webroot=/var/cache/jenkins/war --httpPort=8080
root 126740 0.0 0.0 14428 1040 pts/1 S+ 18:37 0:00 grep --color=auto jenkins
启动Jenkins
通过jar包直接启动jenkins
# java \
-Dcom.sun.management.jmxremote \
-Dcom.sun.management.jmxremote.port=12345 \
-Dcom.sun.management.jmxremote.authenticate=false \
-Dcom.sun.management.jmxremote.ssl=false \
-Djava.rmi.server.hostname="10.0.0.101 " \
-jar jenkins-2.138.3.war &rpm包安装jenkins配置
[root@s1 ~]# grep -v "#" /etc/sysconfig/jenkins | grep -v "^$"
JENKINS_HOME="/var/lib/jenkins"
JENKINS_JAVA_CMD=""
JENKINS_USER="jenkins"
JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true \
-Dcom.sun.management.jmxremote \
-Dcom.sun.management.jmxremote.port=12345 \
-Dcom.sun.management.jmxremote.authenticate=false \
-Dcom.sun.management.jmxremote.ssl=false \
-Djava.rmi.server.hostname="192.168.7.101" \"
JENKINS_PORT="8080"
JENKINS_LISTEN_ADDRESS=""
JENKINS_HTTPS_PORT=""
JENKINS_HTTPS_KEYSTORE=""
JENKINS_HTTPS_KEYSTORE_PASSWORD=""
JENKINS_HTTPS_LISTEN_ADDRESS=""
JENKINS_DEBUG_LEVEL="5"
JENKINS_ENABLE_ACCESS_LOG="no"
JENKINS_HANDLER_MAX="100"
JENKINS_HANDLER_IDLE="20"
JENKINS_ARGS=""
#可选启动参数：
JENKINS_JAVA_OPTIONS="-server -Xms1g -Xmx1g -Xss512k -Xmn1g
-XX:CMSInitiatingOccupancyFraction=65
-XX:+UseFastAccessorMethods
-XX:+AggressiveOpts -XX:+UseBiasedLocking
-XX:+DisableExplicitGC -XX:MaxTenuringThreshold=10
-XX:NewSize=2048M -XX:MaxNewSize=2048M -XX:NewRatio=2
-XX:PermSize=128m -XX:MaxPermSize=512m -XX:CMSFullGCsBeforeCompaction=5
-XX:+ExplicitGCInvokesConcurrent -XX:+UseConcMarkSweepGC -XX:+UseParNewGC
-XX:+CMSParallelRemarkEnabled -Djava.awt.headless=true
-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=12345
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
-Djava.rmi.server.hostname="192.168.7.104" "Jenkins 启动过程
访问jenkins 页面
用浏览器访问：http://10.0.0.101:8080/
[root@ubuntu1804 ~]#cat /var/lib/jenkins/secrets/initialAdminPassword
7d19df2dd74b48a9a48e9534456d0c92输入文件中的密码：
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