流程概括
1、通过Docker管理Jenkins资源
2、通过Jenkins创建Docker镜像
整体流程：
构建与发布：
Jenkins执行编译>Docker中运行服务>操作可跟踪
环境要求：
一台提供Git服务的服务器，也可以直接使用Github
一台运行Jenkins服务的服务器（Tomcat）
一台或若干Docker宿主机服务器
Jenkins软件包及组件的安装
总体实验环境
| 服务 | IP | 说明 |
| Git | 172.16.1.8 | |
| Docker | 172.19.10.201 | |
| Jenkins | 172.19.10.232 | https://www.jenkins.io/ LTS2.32.3>2.73.3 |
创建tomcat的用户，并使用tomcat用户来进行操作；而对于docker则是使用root用户进行操作
apache-maven-3.3.3
jdk1.7.0_60
tomcat-7.0.34
将jenkins.war下载到 -P tomcat-7.0.34/webapps/
他这个目录下还有docs,examples,host-manager,manager,ROOT等目录
启动tocat-7.0.34/bin/catalina.sh start
查看日志输出tail -100f tomcat-7.0.34/logs/catalina.out 在日志中会生成一个admin的密码，同时，密码也保存到/home/tomcat/.jenkins/secrets/initialAdminPassword文件中
在浏览器中打开页面：172.19.10.232:8080/jenkins 进入后也会告诉密码的存放位置
选择要安装的插件：Git plugin/Git Parameter Plug-in/GitLab Plugin/Publish Over SSH/SSH plugin
创建管理员帐户
搭建Docker宿主机
修改主机名：hostnamectl set-hostname docker01
国内：get.daocloud.io
创建用户：useradd docker -d /home/docker -s /bin/bash
设置密码：echo "docker:docker" | chpasswd
创建目录：mkdir /data/dockerfiles/scripts -p
Docker脚本：vi /data/dockerfiles/scripts/deplay.sh
chmod +x /data/dockerfiles/scripts/deplay.sh
chown docker:docker /data/dockerfiles -R
用于在Jenkins中调用，通过脚本完成对工程的部署
service docker start
docker search tomcat 搜索镜像
docker pull tomcat
使用docker加速器，需要重启一下docker服务
Jenkins全局配置
系统管理>Global Tool Configuration
来自于more apache-maven-3.3.3/conf/settings.xml 记录本地仓库的路径/用户/密码等的配置信息
默认设置：
Maven Configuration:Setting file in filesystem
File Path:/home/tomcat/apache-maven-3.3.3/conf/setting.xml
全局设置：
Maven Configuration:Global setting file in filesystem
File Path:/home/tomcat/apache-maven-3.3.3/conf/setting.xml
JDK
别名：jdk1.7
JAVA_HOME:/home/tomcat/jdk1.7.0_60
Git
Name:Default
Path to Git executable:git
Maven
Name:maven
MAVEN_HOME:/home/tomcat/apache-maven-3.3.3
保存
系统管理>系统设置
Publish over SSH
SSH Servers:
Name:172.19.10.201_docker01
Hostname:172.19.10.201
Username:docker
Remote Directory:/data/dockerfiles
高级Password:docker
测试连接：Test Configuration
系统管理>管理插件
可选插件>Maven Integration plugin>安装
创建和配置发布任务
创建一个新的任务定义一个项目名称：Enter an item name>构建一个maven项目>OK
General:勾选丢弃旧的构建，保持构建的最大数设置为10个;勾选参数化构建过程，设置Git Parameter,Name:release_branck,Parameter Type:Branch;String Parameter:Name:project_name,默认值：first_docker_proj01
源码管理：选择Git,Repository URL:http://172.16.1.8/libingyang/hellp_docker.git，然后添加鉴权：用户名/密码方式，Branches to build:$release_branch
Build:Goals and options:clean package -DskipTests=true
构建后操作：Send build artifacts over SSH,
Transfers:Source files:target/*.war,Remove prefix:target/ 拿掉前缀，Remote directory:/war/$project_name,Exec command:/data/dockerfiles/scripts/deploy.sh $project_name hello_docker $release_branch 11000 8080 >保存
Build with Parameters:选择好参数后，开始构建
Jenkins实现工程的集群发布
配置刚创建的发布任务
Send build artifacts over SSH添加多台主机
附：脚本文件
#!/bin/bash
############################################
# this script function is :
# deploy new docker container
#
# USER YYYY-MM-DD - ACTION
# junsansi 2016-01-25 - CREATED
#
############################################
parasnum=5
# function
help_msg()
{
cat << help
+----------------------------------------------------+
+ Error Cause:
+ you enter $# parameters
+ the total paramenter number must be $parasnum
+ 1st :DOCKER_NAME
+ 2nd :PROJECT_NAME
+ 3rd :PROJECT_VERSION
+ 4th :SOURCE_PORT
+ 5th :DESTINATION_PORT
+----------------------------------------------------+
help
}
# ----------------------------------------------------
# Check parameter number
# ----------------------------------------------------
if [ $# -ne ${parasnum} ]
then
help_msg
exit
fi
# ----------------------------------------------------
# Initialize the parameter.
# ----------------------------------------------------
DOCKER_NAME=$1
PROJECT_NAME=$2
PROJ_VERSION=$3
SPORT=$4
DPORT=$5
PROJ_VERSION=${PROJ_VERSION/"origin/"/""}
DOCKER_FILE="/data/dockerfiles/${DOCKER_NAME}/Dockerfile"
DOCKER_FILE_DIR=/data/dockerfiles/${DOCKER_NAME}
if [ ! -d ${DOCKER_FILE_DIR} ]; then
mkdir -p ${DOCKER_FILE_DIR}
fi
# ----------------------------------------------------
# check docker images
# ----------------------------------------------------
DOCKER_IMAGE=`/usr/bin/docker images | grep ${DOCKER_NAME} | awk -F ' ' '{print $3}'`
if [ -n "${DOCKER_IMAGE}" ]; then
# check docker container
for dc in `/usr/bin/docker ps -a | grep ${DOCKER_NAME} | awk -F " " '{print $1}'`
do
echo "Stop container: ${dc}"
/usr/bin/docker stop ${dc}
# delete while docker container was exists
echo "##Delete exists Container_Id: "${dc}
/usr/bin/docker rm ${dc}
done
# delete while docker image was exists
echo "##Delete exists Image: "${DOCKER_IMAGE}
/usr/bin/docker rmi ${DOCKER_IMAGE}
fi
echo ""
# ----------------------------------------------------
# Init dockerfile
# ----------------------------------------------------
echo "**Init dockerfile start: "${DOCKER_FILE}
echo "FROM tomcat" > ${DOCKER_FILE}
echo 'MAINTAINER junsansi "junsansi@sina.com"' >> ${DOCKER_FILE}
echo "ADD *.war /usr/local/tomcat/webapps/${PROJECT_NAME}.war" >> ${DOCKER_FILE}
echo "EXPOSE 8080" >> ${DOCKER_FILE}
echo "CMD /usr/local/tomcat/bin/startup.sh && tail -f /usr/local/tomcat/logs/catalina.out" >> ${DOCKER_FILE}
cat ${DOCKER_FILE}
echo "**Init dockerfile end."
# ----------------------------------------------------
# Build dockerfile
# ----------------------------------------------------
cd ${DOCKER_FILE_DIR}
rm *.war -rf
mv /data/dockerfiles/war/${DOCKER_NAME}/*.war ./
echo ""
echo "##Build dockerfile for "${DOCKER_NAME}
/usr/bin/docker build -t ${DOCKER_NAME}:${PROJ_VERSION} .
# ----------------------------------------------------
# Run docker container
# ----------------------------------------------------
echo ""
echo "##Running docker container: "${DOCKER_NAME}
/usr/bin/docker run --name ${DOCKER_NAME}_d1 -d -p ${SPORT}:${DPORT} ${DOCKER_NAME}:${PROJ_VERSION}
#/usr/bin/docker run ${cmd}
echo ""
参考资料：