jenkins自动打包生成docker镜像后自动发布并nginx代理访问

时间：2022-05-22 02:07:15

之前曾写过docker及jenkins基础使用  https://www.cnblogs.com/xiaochangwei/category/816943.html

现在搭建环境的功能为：

1.jenkins自动拉取代码打包

2.根据时间戳生成docker镜像

3. 启动生成的镜像

　　3.1.可以指定启动的名字和访问路径

　　3.2.可以指定端口

　　3.3.如果端口或名字已经被占用，则直接停掉之前启动的

4.访问的时候不要输入端口，直接为 测试环境ip/应用名字

根据要求，采用了下列步骤方法：

1.构建后动态生成Dockerfile

2.构建docker镜像

3.停掉端口或名称冲突的docker服务

4.启动新生成的镜像

5.更新nginx配置文件并重启nginx

为了简单方便且动态指定各项参数，直接采用了构建后shell操作

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jenkins自动打包生成docker镜像后自动发布并nginx代理访问

#参数设定

#1.映射端口，不指定则使用随机值

PORT=

#2.容器名字，不指定则使用打包tag号，如：jenkins-myapp-18

NAME=

#-----------------------下列内容请勿修改---------------------------------

#-----------------------下列内容请勿修改---------------------------------

#-----------------------下列内容请勿修改---------------------------------

if [ -z "$NAME" ]; then

    NAME=$JOB_NAME

fi

TAG=`date "+%Y%m%d%H%M%S"`

rm -f Dockerfile

cat > Dockerfile << EOF

FROM tomcat:8-jre8

MAINTAINER xiaochangwei <changw.xiao@qq.com>

LABEL app="testApp" version="0.0.1" by="xiaochangwei"

RUN rm -rf /usr/local/tomcat/webapps/ROOT

COPY ./target/*.war /usr/local/tomcat/webapps/$NAME.war

ENTRYPOINT ["/usr/local/tomcat/bin/catalina.sh","run"]

EOF

IMAGE=$JOB_NAME/$NAME:$TAG

docker build -t $IMAGE --rm=true .

#检查容器名称是否存在，存在则停止并删除

exsitContainer=`docker ps -a --filter name=$NAME |awk '{print $1}'|tail -n +2`

echo $exsitContainer

if [ -n "$exsitContainer" ]; then

    docker stop $exsitContainer

    docker rm $exsitContainer

fi

#如果指定了端口，则检查端口是否被占用，如被占用，直接停止对应容器

if [ -n "$PORT" ]; then

    containers=`docker ps -a --filter status=running|grep ':'$PORT |awk '{print $1}'`

    echo 'containers:'$containers

    if [ ${#containers[@]} -gt 0 ];then

      echo 'stop container:'$containers

      #docker stop $containers

        for container in $containers

          do

           docker stop $container

          done

    fi

    #根据指定端口启动容器

    docker run -d --privileged=true --env JAVA_OPTS=-Duser.timezone=GMT+08 -p $PORT:8080 --name $NAME $IMAGE

else

   #使用随机端口启动容器

   docker run -d -P --env JAVA_OPTS=-Duser.timezone=GMT+08 --name $NAME $IMAGE

fi

#调用脚本更新nginx代理配置

sh /docker/nginx/nginx_conf_update.sh

docker ps -a |grep $IMAGE

其中  /docker/nginx/nginx_conf_update.sh 逻辑为：通过docker ps 列出启动的镜像应用，然后动态生成nginx配置文件

[root@localhost nginx]# cat nginx_conf_update.sh

#!/bin/bash

path=/docker/nginx/conf.d/default.conf

echo "" > $path

echo "server {" >> $path

echo "listen       80;" >> $path

echo "client_max_body_size   200m;"  >> $path

echo "server_name   localhost;" >> $path

echo "fastcgi_buffers 18 128k;" >> $path

echo "send_timeout 300;" >> $path

#echo "fastcgi_connect_timeout 300s;" >> $path

#echo "fastcgi_send_timeout 300s;" >> $path

#echo "fastcgi_read_timeout 300s;" >> $path

#echo "proxy_connect_timeout 500s;" >> $path

#echo "proxy_read_timeout 500s;" >> $path

#echo "proxy_send_timeout 500s;" >> $path

echo "" >> $path

docker_ip(){

port=$(docker port $1 | grep 80 | cut -d':' -f2)

    if [  ${#port} -gt 0 ]; then

    #ip=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' $1)

    #ok=$(cat ../data/nginx/conf.d/default.conf |grep $1)

    #if [ ${#ok} -gt 0 ];then

    #    echo "存在"

    #    sed -i '/\'$1'/,+3d' ../data/nginx/conf.d/default.conf

    #fi

        firewall-cmd --zone=public --add-port=$port/tcp --permanent

    sed -i '$i \

        \

    location '$1' {  \

        proxy_pass   http://172.17.0.1:'$port$1';  \

        proxy_set_header Host $host;  \

        proxy_connect_timeout 500s; \

        proxy_read_timeout 500s; \

        proxy_send_timeout 500s; \

    } ' $path

   fi

}

for i in $(docker inspect -f '{{.Name}}' $(docker ps -aq))

do

        docker_ip $i

done

echo "     location / {" >> $path

echo "         proxy_pass   http://172.17.0.1:13380/;" >> $path

echo "         proxy_set_header Host \$host; "  >> $path

echo "         client_max_body_size   200m;"  >> $path

echo "     } "  >> $path

echo "     location /jenkins {" >> $path

echo "         proxy_pass   http://172.17.0.1:8081/;" >> $path

echo "         proxy_set_header Host \$host; "  >> $path

echo "         client_max_body_size   200m;"  >> $path

echo "     } "  >> $path

echo "}" >> $path

firewall-cmd --reload

docker exec -i nginx nginx -s reload

[root@localhost nginx]#

在构建前需要先启动一个nginx

docker run -d -p 80:80 --name=nginx  --restart=always -v /etc/localtime:/etc/localtime -v /docker/nginx/conf.d:/etc/nginx/conf.d nginx

这样构建后就能直接通过 ip/应用名称 访问应用了  无需关心具体映射的端口

[[1;34mINFO[m] [1m------------------------------------------------------------------------[m

[[1;34mINFO[m] [1;32mBUILD SUCCESS[m

[[1;34mINFO[m] [1m------------------------------------------------------------------------[m

[[1;34mINFO[m] Total time: 20.770 s

[[1;34mINFO[m] Finished at: 2019-05-05T14:23:44+08:00

[[1;34mINFO[m] Final Memory: 39M/440M

[[1;34mINFO[m] [1m------------------------------------------------------------------------[m

[bdjc_ls_x] $ /bin/sh -xe /tmp/jenkins4101726310382471801.sh

+ PORT=

+ NAME=

+ '[' -z '' ']'

+ NAME=bdjc_ls_x

++ date +%Y%m%d%H%M%S

+ TAG=20190505142345

+ rm -f Dockerfile

+ cat

+ IMAGE=bdjc_ls_x/bdjc_ls_x:20190505142345

+ docker build -t bdjc_ls_x/bdjc_ls_x:20190505142345 --rm=true .

Sending build context to Docker daemon 176.9 MB

Step 1/6 : FROM tomcat:8-jre8

 ---> dd6ff929584a

Step 2/6 : MAINTAINER xiaochangwei <changw.xiao@qq.com>

 ---> Using cache

 ---> 3bbe1bdd60b1

Step 3/6 : LABEL app "testApp" version "0.0.1" by "xiaochangwei"

 ---> Using cache

 ---> fa190e40687a

Step 4/6 : RUN rm -rf /usr/local/tomcat/webapps/ROOT

 ---> Using cache

 ---> 75294c2b57d3

Step 5/6 : COPY ./target/*.war /usr/local/tomcat/webapps/bdjc_ls_x.war

 ---> ea3a50c66ed9

Removing intermediate container 5936210f7b50

Step 6/6 : ENTRYPOINT /usr/local/tomcat/bin/catalina.sh run

 ---> Running in 61ace663e5a4

 ---> 48f8683a1145

Removing intermediate container 61ace663e5a4

Successfully built 48f8683a1145

++ docker ps -a --filter name=bdjc_ls_x

++ awk '{print $1}'

++ tail -n +2

+ exsitContainer=

+ echo

+ '[' -n '' ']'

+ '[' -n '' ']'

+ docker run -d -P --env JAVA_OPTS=-Duser.timezone=GMT+08 --name bdjc_ls_x bdjc_ls_x/bdjc_ls_x:20190505142345

7e85e36db00dde78495608e81d8bfe35e93e08f13b1b4216c3961a460e121017

+ sh /docker/nginx/nginx_conf_update.sh

success

[91mWarning: ALREADY_ENABLED: 32822:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 32821:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 32814:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 80:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 88:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 9999:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 8080:tcp[00m

success

[91mWarning: ALREADY_ENABLED: 9099:tcp[00m

success

success

2019/05/05 14:24:04 [notice] 263#263: signal process started

+ grep bdjc_ls_x/bdjc_ls_x:20190505142345

+ docker ps -a

7e85e36db00d        bdjc_ls_x/bdjc_ls_x:20190505142345                       "/usr/local/tomcat..."   12 seconds ago      Up 11 seconds              0.0.0.0:32823->8080/tcp   bdjc_ls_x

Finished: SUCCESS

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