案例描述
（1）了解Mariadb服务的容器化部署。
（2）了解Redis服务的容器化部署。
（3）了解Pig服务的容器化部署。
（4）了解Nginx服务的容器化部署。
规划节点
节点规划，见表1。
表1 节点规划
| IP |
主机名 |
节点 |
| 10.24.2.17 |
master |
docker-compose节点 |
基础准备
Docker和Docker Compose已安装完成，将提供的软件包Pig.tar.gz上传至master节点/root目录下并解压。
案例实施
容器化部署MariaDB
编写Dockerfile
编写init.sh脚本：
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| [root@k8s-worker-node1 ~]# cd Pig/
[root@k8s-worker-node1 Pig]# cat mysql_init.sh
#!/bin/bash
mysql_install_db --user=root
mysqld_safe --user=root &
sleep 8
mysqladmin -u root password 'root'
mysql -uroot -proot -e "grant all on *.* to 'root'@'%' identified by 'root'; flush privileges;"
mysql -uroot -proot -e " source /opt/pig.sql;source /opt/pig_codegen.sql;source /opt/pig_config.sql; source /opt/pig_job.sql;"
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编写yum源：
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| [root@k8s-worker-node1 Pig]# cat local.repo
[pig]
name=pig
baseurl=file:///root/yum
gpgcheck=0
enabled=1
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编写Dockerfile文件：
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| [root@k8s-worker-node1 Pig]# cat Dockerfile-mariadb
FROM centos:centos7.9.2009
MAINTAINER Chinaskills
RUN rm -rf /etc/yum.repos.d/*
COPY local.repo /etc/yum.repos.d/
COPY yum /root/yum
ENV LC_ALL en_US.UTF-8
RUN yum -y install mariadb-server
COPY mysql /opt/
COPY mysql_init.sh /opt/
RUN bash /opt/mysql_init.sh
EXPOSE 3306
CMD ["mysqld_safe","--user=root"]
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构建镜像
构建镜像：
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| [root@k8s-worker-node1 Pig]# docker build -t pig-mysql:v1.0 -f Dockerfile-mariadb .
Sending build context to Docker daemon 890.9MB
Step 1/12 : FROM centos:centos7.9.2009
---> eeb6ee3f44bd
Step 2/12 : MAINTAINER Chinaskills
---> Using cache
---> 815a4a5f2242
Step 3/12 : RUN rm -rf /etc/yum.repos.d/*
---> Using cache
---> 6afa0315cb5b
Step 4/12 : COPY local.repo /etc/yum.repos.d/
---> Using cache
---> 4f07e082cc00
Step 5/12 : COPY yum /root/yum
---> Using cache
---> 7042f9e7f455
Step 6/12 : ENV LC_ALL en_US.UTF-8
---> Using cache
---> df0aa8985d61
Step 7/12 : RUN yum -y install mariadb-server
---> Using cache
---> 9ad09d62d373
Step 8/12 : COPY mysql /opt/
---> Using cache
---> 75adb0e3bbb0
Step 9/12 : COPY mysql_init.sh /opt/
---> Using cache
---> 3cc10e8ca0cc
Step 10/12 : RUN bash /opt/mysql_init.sh
---> Using cache
---> f7fe9f822cc3
Step 11/12 : EXPOSE 3306
---> Using cache
---> 70f2274acbeb
Step 12/12 : CMD ["mysqld_safe","--user=root"]
---> Using cache
---> f088fb18dedf
Successfully built f088fb18dedf
Successfully tagged pig-mysql:v1.0
|
容器化部署Redis
编写Dockerfile
编写Dockerfile文件：
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| [root@k8s-worker-node1 Pig]# cat Dockerfile-redis
FROM centos:centos7.9.2009
MAINTAINER Chinaskills
RUN rm -rf /etc/yum.repos.d/*
COPY local.repo /etc/yum.repos.d/
COPY yum /root/yum
RUN yum -y install redis
RUN sed -i 's/127.0.0.1/0.0.0.0/g' /etc/redis.conf && \
sed -i 's/protected-mode yes/protected-mode no/g' /etc/redis.conf
EXPOSE 6379
CMD ["/usr/bin/redis-server","/etc/redis.conf"]
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构建镜像
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| [root@k8s-worker-node1 Pig]# docker build -t pig-redis:v1.0 -f Dockerfile-redis .
Sending build context to Docker daemon 890.9MB
Step 1/9 : FROM centos:centos7.9.2009
---> eeb6ee3f44bd
Step 2/9 : MAINTAINER Chinaskills
---> Using cache
---> 815a4a5f2242
Step 3/9 : RUN rm -rf /etc/yum.repos.d/*
---> Using cache
---> 6afa0315cb5b
Step 4/9 : COPY local.repo /etc/yum.repos.d/
---> Using cache
---> 4f07e082cc00
Step 5/9 : COPY yum /root/yum
---> Using cache
---> 7042f9e7f455
Step 6/9 : RUN yum -y install redis
---> Using cache
---> 2d0b65ca48f0
Step 7/9 : RUN sed -i 's/127.0.0.1/0.0.0.0/g' /etc/redis.conf && sed -i 's/protected-mode yes/protected-mode no/g' /etc/redis.conf
---> Using cache
---> fcb84f12d0cf
Step 8/9 : EXPOSE 6379
---> Using cache
---> 37ac24f680d6
Step 9/9 : CMD ["/usr/bin/redis-server","/etc/redis.conf"]
---> Using cache
---> ee5f16785493
Successfully built ee5f16785493
Successfully tagged pig-redis:v1.0
|
容器化部署Pig
编写Dockerfile
编写启动脚本：
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| [root@k8s-worker-node1 Pig]# cat pig-start.sh
#!/bin/bash
sleep 60
nohup java -jar /root/pig-register.jar $JAVA_OPTS >/dev/null 2>&1 &
sleep 60
nohup java -jar /root/pig-gateway.jar $JAVA_OPTS >/dev/null 2>&1 &
sleep 20
nohup java -jar /root/pig-auth.jar $JAVA_OPTS >/dev/null 2>&1 &
sleep 20
nohup java -jar /root/pig-upms-biz.jar $JAVA_OPTS >/dev/null 2>&1 &
sleep 1h
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编写Dockerfile文件：
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| [root@k8s-worker-node1 Pig]# cat Dockerfile-pig
FROM centos:centos7.9.2009
MAINTAINER Chinaskills
COPY service /root
ADD yum /root/yum
RUN rm -rfv /etc/yum.repos.d/*
COPY local.repo /etc/yum.repos.d/local.repo
RUN yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
COPY pig-start.sh /root
RUN chmod +x /root/pig-start.sh
EXPOSE 8848 9999 3000 4000
CMD ["/bin/bash","/root/pig-start.sh"]
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构建镜像
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| [root@k8s-worker-node1 Pig]# docker build -t pig-service:v1.0 -f Dockerfile-pig .
Sending build context to Docker daemon 890.9MB
Step 1/11 : FROM centos:centos7.9.2009
---> eeb6ee3f44bd
Step 2/11 : MAINTAINER Chinaskills
---> Using cache
---> 815a4a5f2242
Step 3/11 : COPY service /root
---> Using cache
---> f0afce9f674f
Step 4/11 : ADD yum /root/yum
---> Using cache
---> e7af4c1e3ee4
Step 5/11 : RUN rm -rfv /etc/yum.repos.d/*
---> Using cache
---> 204b3a407438
Step 6/11 : COPY local.repo /etc/yum.repos.d/local.repo
---> Using cache
---> 601071e881c5
Step 7/11 : RUN yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
---> Using cache
---> d80f53c29912
Step 8/11 : COPY pig-start.sh /root
---> Using cache
---> cf9abaa6c27b
Step 9/11 : RUN chmod +x /root/pig-start.sh
---> Using cache
---> 7d8c3c7a3eaf
Step 10/11 : EXPOSE 8848 9999 3000 4000
---> Using cache
---> 172a68bf40ed
Step 11/11 : CMD ["/bin/bash","/root/pig-start.sh"]
---> Using cache
---> c890d15338b2
Successfully built c890d15338b2
Successfully tagged pig-service:v1.0
|
容器化部署前端服务
编写Dockerfile
编写Dockerfile：
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| [root@k8s-worker-node1 Pig]# cat Dockerfile-nginx
FROM centos:centos7.9.2009
MAINTAINER Chinaskills
RUN rm -rf /etc/yum.repos.d/*
COPY local.repo /etc/yum.repos.d/
COPY yum /root/yum
RUN yum -y install nginx
COPY nginx/dist /data
ADD nginx/pig-ui.conf /etc/nginx/conf.d/
RUN /bin/bash -c 'echo init ok'
EXPOSE 80
CMD ["nginx","-g","daemon off;"]
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构建镜像
构建镜像：
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| [root@k8s-worker-node1 Pig]# docker build -t pig-ui:v1.0 -f Dockerfile-nginx .
Sending build context to Docker daemon 890.9MB
Step 1/11 : FROM centos:centos7.9.2009
---> eeb6ee3f44bd
Step 2/11 : MAINTAINER Chinaskills
---> Using cache
---> 815a4a5f2242
Step 3/11 : RUN rm -rf /etc/yum.repos.d/*
---> Using cache
---> 6afa0315cb5b
Step 4/11 : COPY local.repo /etc/yum.repos.d/
---> Using cache
---> 4f07e082cc00
Step 5/11 : COPY yum /root/yum
---> Using cache
---> 7042f9e7f455
Step 6/11 : RUN yum -y install nginx
---> Using cache
---> b6ee699b51ed
Step 7/11 : COPY nginx/dist /data
---> Using cache
---> 04b6d05ba642
Step 8/11 : ADD nginx/pig-ui.conf /etc/nginx/conf.d/
---> Using cache
---> 661b56e2cff6
Step 9/11 : RUN /bin/bash -c 'echo init ok'
---> Using cache
---> 0d98b6d8a81c
Step 10/11 : EXPOSE 80
---> Using cache
---> b1f5ecafc494
Step 11/11 : CMD ["nginx","-g","daemon off;"]
---> Using cache
---> c20fc29b9daa
Successfully built c20fc29b9daa
Successfully tagged pig-ui:v1.0
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编排部署pig
编写docker-compose.yaml
编写docker-compose.yaml编排文件：
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| version: '2'
services:
pig-mysql:
environment:
MYSQL_ROOT_PASSWORD: root
restart: always
container_name: pig-mysql
image: pig-mysql:v1.0
ports:
- 3306:3306
links:
- pig-service:pig-register
pig-redis:
image: pig-redis:v1.0
ports:
- 6379:6379
restart: always
container_name: pig-redis
hostname: pig-redis
links:
- pig-service:pig-register
pig-service:
ports:
- 8848:8848
- 9999:9999
restart: always
container_name: pig-service
hostname: pig-service
image: pig-service:v1.0
extra_hosts:
- pig-register:127.0.0.1
- pig-upms:127.0.0.1
- pig-gateway:127.0.0.1
- pig-auth:127.0.0.1
- pig-hou:127.0.0.1
stdin_open: true
tty: true
privileged: true
pig-ui:
restart: always
container_name: pig-ui
image: pig-ui:v1.0
ports:
- 8888:80
links:
- pig-service:pig-gateway
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部署服务
部署服务：
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| [root@k8s-worker-node1 Pig]# docker-compose up -d
[+] Running 5/5
⠿ Network pig_default Created 0.1s
⠿ Container pig-service Started 0.7s
⠿ Container pig-mysql Started 1.5s
⠿ Container pig-redis Started 1.7s
⠿ Container pig-ui Started 1.8s
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查看服务：
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| [root@k8s-worker-node1 Pig]# docker-compose ps
NAME COMMAND SERVICE STATUS PORTS
pig-mysql "mysqld_safe --user=…" pig-mysql running 0.0.0.0:3306->3306/tcp, :::3306->3306/tcp
pig-redis "/usr/bin/redis-serv…" pig-redis running 0.0.0.0:6379->6379/tcp, :::6379->6379/tcp
pig-service "/bin/bash /root/pig…" pig-service running 0.0.0.0:8848->8848/tcp, 0.0.0.0:9999->9999/tcp, :::8848->8848/tcp, :::9999->9999/tcp
pig-ui "nginx -g 'daemon of…" pig-ui running 0.0.0.0:8888->80/tcp, :::8888->80/tcp
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等待3分钟左右，在浏览器上通过http://IP:8888访问Pig，如图所示：
图1
账号和密码默认，输入验证码，点击登录。如图所示：
图2
