Jenkins流水線項目發布流程

CI/CD代碼發布流程

1. 開發者開發代碼
2. 提交至git倉庫
3. jenkins從倉庫拉取代碼
4. jenkins通過maven（ant，gradle等）構建項目推到docker倉庫
5. 生成一個在tomcat運行的項目的docker容器
6. 測試人員測試

流水線項目創建

本次環境為：

主機名	IP地址	安裝的應用	系統版本
jenkins	192.168.100.1	tomcat jenkins	RedHat 8
client	192.168.100.2	tomcat	RedHat 8

tomcat、jenkins安裝配置詳細請見：Jenkins配置

准備工作：

#jenkins
//關閉防火牆
[root@jenkins ~]# systemctl disable --now firewalld
[root@jenkins ~]# sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
[root@jenkins ~]# setenforce 0

//安裝jdk環境
[root@jenkins ~]# yum -y install java-1.8.0-openjdk java-1.8.0-openjdk-devel

//安裝git和maven
[root@jenkins ~]# yum -y install git maven

//安裝tomcat
[root@jenkins ~]# cd /usr/src/
[root@jenkins src]# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.46/bin/apache-tomcat-9.0.46.tar.gz
[root@jenkins src]# ls
apache-tomcat-9.0.46.tar.gz  debug  kernels
[root@jenkins src]# tar xf apache-tomcat-9.0.46.tar.gz -C /usr/local/
[root@jenkins src]# cd /usr/local/
[root@jenkins local]# ln -s apache-tomcat-9.0.46/ tomcat

//部署jenkins
[root@jenkins ~]# cd /usr/src/
[root@jenkins src]# wget http://mirrors.jenkins-ci.org/war/2.293/jenkins.war
[root@jenkins src]# cp jenkins.war /usr/local/tomcat/webapps
[root@jenkins src]# /usr/local/tomcat/bin/catalina.sh start
[root@jenkins src]# ls /usr/local/tomcat/webapps/
docs  examples  host-manager  jenkins  jenkins.war  manager  ROOT

//SSH免密登錄
[root@jenkins ~]# ssh-keygen -t rsa
[root@jenkins ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.100.2

#client
//關閉防火牆
[root@client ~]# systemctl disable --now firewalld
[root@client ~]# sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
[root@client ~]# setenforce 0

//安裝jdk環境
[root@client ~]# yum -y install java-1.8.0-openjdk java-1.8.0-openjdk-devel

//安裝tomcat
[root@client ~]# cd /usr/src
[root@client src]# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.46/bin/apache-tomcat-9.0.46.tar.gz
[root@client src]# tar xf apache-tomcat-9.0.46.tar.gz -C /usr/local/
[root@client src]# cd /usr/local/
[root@client local]# ln -s apache-tomcat-9.0.46/ tomcat

管理Jenkins

登錄192.168.100.1:8080/jenkins

安裝Pipeline、Git插件

創建流水線項目

定義變量

勾選 參數化構建過程 —— 添加參數

配置流水線

流水線腳本詳情如下

pipeline {
    agent any
    
    stages {
        stage('pull code') {
            steps {
                git '${Git_repo}'
            }
        }

        stage('package') {
            steps {
                sh """
                mvn clean
                mvn package
                """
            }
        }
        
        stage('deploy') {
            steps {
                sh """
                scp target/${Project_name}.war root@${Client}:${Tomcat_dir}/webapps/
                ssh root@${Client} '${Tomcat_dir}/bin/shutdown.sh && ${Tomcat_dir}/bin/startup.sh'
                """
            }
        }
        
    }
}

立即構建

本次構建變量參數如下

構建成功

構建成功后驗證

#client
//查看tomcat是否啟動
[root@client ~]# ss -antl
State     Recv-Q    Send-Q            Local Address:Port       Peer Address:Port    
LISTEN    0         128                     0.0.0.0:22              0.0.0.0:*       
LISTEN    0         1            [::ffff:127.0.0.1]:8005                  *:*       
LISTEN    0         100                           *:8080                  *:*       
LISTEN    0         128                        [::]:22                 [::]:*  

//查看項目名稱
[root@client ~]# ls /usr/local/tomcat/webapps/
docs          ly-simple-tomcat-0.0.1-SNAPSHOT      ROOT
examples      ly-simple-tomcat-0.0.1-SNAPSHOT.war
host-manager  manager

訪問 http://192.168.100.2:8080/ly-simple-tomcat-0.0.1-SNAPSHOT/

訪問成功！大功告成!