2020-06-07 基于Docker构建企业Jenkins C

作者: 阿丧小威 | 来源:发表于2020-06-07 17:54 被阅读0次

1. CI/CD

持续集成（Continuous Integration，CI）：代码合并、构建、部署、测试都在一起，不断地执行这个过程，并对结果反馈。
持续部署（ContinuousDeployment，CD）：部署到测试环境、预生产环境、生产环境。
持续交付（ContinuousDelivery，CD）：将最终产品发布到生产环境，给用户使用。

CI/CD流程

CI流程

测试环境：
机器1：安装Jenkins和docker，IP：192.168.9.63
机器2：安装git和harbor，IP：192.168.9.64

2. 部署Jenkins和Docker

在机器1上操作，部署Jenkins：

[root@localhost ~]# ls    ---上传安装所需的包
anaconda-ks.cfg  apache-tomcat-8.0.46.tar.gz  jdk-8u45-linux-x64.tar.gz  jenkins.war
[root@localhost ~]# tar zxf jdk-8u45-linux-x64.tar.gz    ---解压jdk
[root@localhost ~]# tar zxf apache-tomcat-8.0.46.tar.gz    ---解压tomcat
[root@localhost ~]# mv jdk1.8.0_45 /usr/local/jdk    ---把jdk移动到/usr/local下
[root@localhost ~]# vi /etc/profile    ---添加以下两行
JAVA_HOME=/usr/local/jdk
PATH=$PATH:$JAVA_HOME/bin
[root@localhost ~]# source /etc/profile
[root@localhost ~]# java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
[root@localhost ~]# mv apache-tomcat-8.0.46 /usr/local/jenkins_tomcat
[root@localhost ~]# cd /usr/local/jenkins_tomcat/
[root@localhost jenkins_tomcat]# ls    ---tomcat的网站根目录为webapps
bin  conf  lib  LICENSE  logs  NOTICE  RELEASE-NOTES  RUNNING.txt  temp  webapps  work
[root@localhost jenkins_tomcat]# cd webapps/
[root@localhost webapps]# ls    ---默认的工程名是ROOT
docs  examples  host-manager  manager  ROOT
[root@localhost webapps]# rm -rf *    ---里面的东西用不到，删除掉
[root@localhost webapps]# ls
[root@localhost webapps]# mv /root/jenkins.war ./ROOT.war    ---这样就可以直接访问到Jenkins，不用加工程名
[root@localhost webapps]# ls
ROOT.war

[root@localhost webapps]# cd ../bin/
[root@localhost bin]# ./startup.sh 
Using CATALINA_BASE:   /usr/local/jenkins_tomcat
Using CATALINA_HOME:   /usr/local/jenkins_tomcat
Using CATALINA_TMPDIR: /usr/local/jenkins_tomcat/temp
Using JRE_HOME:        /usr/local/jdk
Using CLASSPATH:       /usr/local/jenkins_tomcat/bin/bootstrap.jar:/usr/local/jenkins_tomcat/bin/tomcat-juli.jar
Tomcat started.

[root@localhost ~]# vi /etc/docker/daemon.json    ---因为docker是在http上运行的，所以要配置可信任
{
        "registry-mirrors": ["http://f1361db2.m.daocloud.io"],
        "insecure-registries":["192.168.9.64"]    ---IP地址为仓库地址
}
[root@localhost ~]# systemctl restart docker

访问Jenkins，需要输入密码，密码在红框所在的文件下。

访问Jenkins

[root@localhost bin]# cat /root/.jenkins/secrets/initialAdminPassword    ---复制密码，登录
e41cfc8b278f437794a636cc80f6e38f

Jenkins显示离线，先跳过。

Jenkins显示离线，先跳过

输入帐号密码

下一步

安装成功

Jenkins主界面

创建项目

由于还没安装pipeline插件，所以没有相应按钮，返回首页

进入系统管理

进入插件管理

高级

拉到最下面，把https改成http，提交，检查

点击可用

输入pipeline查找

找到pipeline，安装

安装SCM

安装git

下一步，安装docker。

[root@localhost ~]# sudo yum install -y yum-utils \    ---安装依赖包
device-mapper-persistent-data \
lvm2
[root@localhost ~]# yum-config-manager \    ---安装yum源
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
[root@localhost ~]# yum install docker-ce -y    ---安装docker
[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl enable docker
[root@localhost ~]# curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://f1361db2.m.daocloud.io    ---配置后下载镜像会加快
[root@localhost ~]# systemctl restart docker

3. 部署代码仓库git和镜像仓库Harbor

使用机器2操作：
使用上面的方法安装docker，然后安装compose

[root@localhost ~]# curl -L https://github.com/docker/compose/releases/download/1.15.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
[root@localhost ~]# chmod +x /usr/local/bin/docker-compose

安装harbor

[root@localhost ~]# ls
anaconda-ks.cfg  harbor-offline-installer-v1.6.1.tgz
[root@localhost ~]# tar zxf harbor-offline-installer-v1.6.1.tgz
[root@localhost ~]# cd harbor
[root@localhost harbor]# ls
common                          docker-compose.yml    install.sh           prepare
docker-compose.chartmuseum.yml  ha                    LICENSE
docker-compose.clair.yml        harbor.cfg            NOTICE
docker-compose.notary.yml       harbor.v1.6.1.tar.gz  open_source_license
[root@localhost harbor]# vi harbor.cfg
hostname = 192.168.9.64    ---修改成当前机器IP
[root@localhost harbor]# ./prepare     ---执行准备工作
[root@localhost harbor]# ./install.sh    ---安装
[root@localhost harbor]# docker-compose ps    ---已启动
    Name              Command          Sta                      Ports                     
                                       te                                                 
-----------------------------------------------------------------------------------------
harbor-        /harbor/start.sh        Up                                                 
adminserver                                                                               
harbor-db      /entrypoint.sh          Up    5432/tcp                                     
               postgres                                                                   
harbor-        /harbor/start.sh        Up                                                 
jobservice                                                                                
harbor-log     /bin/sh -c              Up    127.0.0.1:1514->10514/tcp                    
               /usr/local/bin/ ...                                                        
harbor-ui      /harbor/start.sh        Up                                                 
nginx          nginx -g daemon off;    Up    0.0.0.0:443->443/tcp,                        
                                             0.0.0.0:4443->4443/tcp, 0.0.0.0:80->80/tcp   
redis          docker-entrypoint.sh    Up    6379/tcp                                     
               redis ...                                                                  
registry       /entrypoint.sh          Up    5000/tcp                                     
               /etc/regist ...

访问Harbor，默认密码为Harbor12345。

访问Harbor

安装git

[root@localhost ~]# useradd git    ---创建git用户和密码
[root@localhost ~]# passwd git
Changing password for user git.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@localhost ~]# yum install -y git    ---安装git
[root@localhost ~]# su - git    ---切换到git用户
[git@localhost ~]$ mkdir tomcat-java-demo.git    ---创建一个空目录
[git@localhost ~]$ cd tomcat-java-demo.git/
[git@localhost tomcat-java-demo.git]$ git --bare init    ---初始化为git仓库
Initialized empty Git repository in /home/git/tomcat-java-demo.git/
[git@localhost tomcat-java-demo.git]$ exit
logout
[root@localhost ~]# git clone https://github.com/lizhenliang/tomcat-java-demo    ---下载demo

把demo代码提交到git仓库：

[root@localhost ~]# cd tomcat-java-demo/
[root@localhost tomcat-java-demo]# ls
db  Dockerfile  LICENSE  pom.xml  README.md  src
[root@localhost tomcat-java-demo]# vi .git/config
[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
[remote "origin"]
        url = git@192.168.9.64:/home/git/tomcat-java-demo.git    ---把这里改成git私有仓库地址
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
        remote = origin
        merge = refs/heads/master

[root@localhost tomcat-java-demo]# git add .    ---添加本地文件到暂存区
[root@localhost tomcat-java-demo]# git commit -m 'all'    ---提交到本地
# On branch master
nothing to commit, working directory clean
[root@localhost tomcat-java-demo]# git push origin master    ---推送到远程仓库里
The authenticity of host '192.168.9.64 (192.168.9.64)' can't be established.
ECDSA key fingerprint is SHA256:9VmUJe/cRLjBYWdRBiCviJRhG/GwhKs/mKAqIeGydEg.
ECDSA key fingerprint is MD5:ae:93:94:50:3f:6d:63:cc:e8:42:25:92:f3:ef:3c:e9.
Are you sure you want to continue connecting (yes/no)? yes

在机器1上操作，把镜像推到Harbor仓库上：

[root@localhost ~]# docker pull lizhenliang/tomcat    ---拉取tomcat镜像
[root@localhost ~]# docker login 192.168.9.64    ---登录Harbor仓库
Username: admin
Password: 
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
[root@localhost ~]# docker tag lizhenliang/tomcat 192.168.9.64/library/tomcat:latest    ---推送前先打标签
[root@localhost ~]# docker push 192.168.9.64/library/tomcat:latest    ---推上去

推送成功

4. Jenkins配置Pipeline并构建Java项目测试

创建新项目

输入项目名称，选择流水线，确定

把事先写好的Pipeline脚本粘贴上去

Pipeline脚本：

node { 
   // 拉取代码
   stage('Git Checkout') { 
         checkout([$class: 'GitSCM', branches: [[name: '${branch}']], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: 'a2db6b77-03d9-402a-8cbf-0307a638cb6c', url: 'git@192.168.9.64:/home/git/tomcat-java-demo.git']]])   }
   // 代码编译
   stage('Maven Build') {
        sh '''
        export JAVA_HOME=/usr/local/jdk
        /usr/local/maven/bin/mvn clean package -Dmaven.test.skip=true
        '''
   }
   // 项目打包到镜像并推送到镜像仓库
   stage('Build and Push Image') {
sh '''
REPOSITORY=192.168.9.64/library/tomcat-java-demo:${branch}
cat > Dockerfile << EOF
FROM 192.168.9.64/library/tomcat
MAINTAINER www.ctnrs.com
RUN rm -rf /usr/local/tomcat/webapps/*
ADD target/*.war /usr/local/tomcat/webapps/ROOT.war
EOF
docker build -t $REPOSITORY .
docker login 192.168.9.64 -u admin -p Harbor12345
docker push $REPOSITORY
'''
   }
   // 部署到Docker主机
   stage('Deploy to Docker') {
        sh '''
        REPOSITORY=192.168.9.64/library/tomcat-java-demo:${branch}
        docker rm -f tomcat-java-demo |true
        docker pull $REPOSITORY
        docker container run -d --name tomcat-java-demo -p 88:8080 $REPOSITORY
        '''
   }
}

由于Jenkins需要访问git仓库，所以需要配置通过密钥访问。

[root@localhost ~]# ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:Ja5osJeknx1cCDoqBeyKWzCkK9RNBvqzUMKna381SwQ root@localhost.localdomain
The key's randomart image is:
+---[RSA 2048]----+
|   .             |
|o . .E           |
|.* o.o. . .      |
|+.B.+. + o       |
|+==+..o S        |
|+*o*o+ *         |
|Bo+.= * o        |
|+o.+ + o         |
|.  .+ .          |
+----[SHA256]-----+
[root@localhost ~]# ls .ssh/
id_rsa  id_rsa.pub
[root@localhost ~]# ssh-copy-id git@192.168.9.64
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.9.64 (192.168.9.64)' can't be established.
ECDSA key fingerprint is SHA256:9VmUJe/cRLjBYWdRBiCviJRhG/GwhKs/mKAqIeGydEg.
ECDSA key fingerprint is MD5:ae:93:94:50:3f:6d:63:cc:e8:42:25:92:f3:ef:3c:e9.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
git@192.168.9.64's password: 
Number of key(s) added: 1
Now try logging into the machine, with:   "ssh 'git@192.168.9.64'"
and check to make sure that only the key(s) you wanted were added.

[root@localhost ~]# ls .ssh/
id_rsa  id_rsa.pub  known_hosts
[root@localhost ~]# cat .ssh/id_rsa    ---查看私钥
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

新打开一个Jenkins页面

选择凭据

选择全局凭据

添加凭据

更新

复制ID

把ID粘贴到Pipeline指定位置

在机器1上操作，配置maven和git环境：

[root@localhost ~]# tar zxf apache-maven-3.5.0-bin.tar.gz
[root@localhost ~]# mv apache-maven-3.5.0 /usr/local/maven
[root@localhost ~]# git clone git@192.168.9.64:/home/git/tomcat-java-demo.git