基于docker-compose编排部署微服务快速开发框架

1. 规划节点

节点规划，见表1。

表1 节点规划

IP	主机名	节点
10.24.2.10	master	docker-compose节点

2. 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

1. 基础环境准备

（1）导入软件包

下载并解压软件包：

[root@master ~]# wget http://mirrors.douxuedu.com/competition/Pig.tar.gz
[root@master ~]# tar -xf Pig.tar.gz
[root@master ~]# ll Pig
total 206752
-rw------- 1 root root 211696640 Jan 12 17:24 CentOS_7.9.2009.tar
drwxr-xr-x 2 root root        85 Jan  5 08:58 mysql
drwxr-xr-x 3 root root        37 Jan  5 08:56 nginx
drwxr-xr-x 2 root root        97 Jan  5 08:56 service
drwxr-xr-x 3 root root     12288 Jan  5 08:56 yum

导入CentOS:7.9.2009镜像：

[root@master ~]# docker load -i Pig/CentOS_7.9.2009.tar 
Loaded image: centos:centos7.9.2009

（2）启动Kubernetes集群

初始化Kubernetes集群：

[root@master ~]# init-cluster

查看集群状态：

[root@master ~]# kubectl cluster-info
Kubernetes control plane is running at https://apiserver.cluster.local:6443
CoreDNS is running at https://apiserver.cluster.local:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxyTo further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

2. 容器化部署MariaDB

（1）编写Dockerfile

编写init.sh脚本：

[root@master ~]# cd Pig/
[root@master Pig]# vi 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;"

编写yum源：

[root@master Pig]# vi local.repo
[pig]
name=pig
baseurl=file:///root/yum
gpgcheck=0
enabled=1

编写Dockerfile文件：

[root@master Pig]# vi 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"]

（2）构建镜像

构建镜像：

[root@master 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

3. 容器化部署Redis

（1）编写Dockerfile

编写Dockerfile文件：

[root@master Pig]# vi 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"]

（2）构建镜像

[root@master 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

4. 容器化部署Pig

（1）编写Dockerfile

编写启动脚本：

[root@master Pig]# vi pig_init.sh
#!/bin/bash
sleep 20
nohup java -jar /root/pig-register.jar  $JAVA_OPTS  >/dev/null 2>&1 &
sleep 20
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

编写Dockerfile文件：

[root@master Pig]# vi 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_init.sh /root
RUN chmod +x /root/pig_init.sh
EXPOSE 8848 9999 3000 4000
CMD ["/bin/bash","/root/pig_init.sh"]

（2）构建镜像

[root@master 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---> 24a91af3317f
Step 3/11 : COPY service /root---> Using cache---> d5fe8134b1ed
Step 4/11 : ADD yum /root/yum---> Using cache---> 41cc1285cd49
Step 5/11 : RUN rm -rfv /etc/yum.repos.d/*---> Using cache---> 2b8dc2f278e0
Step 6/11 : COPY local.repo /etc/yum.repos.d/local.repo---> Using cache---> a61d69862c5c
Step 7/11 : RUN yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel---> Using cache---> 92ccadeb64b6
Step 8/11 : COPY pig_init.sh /root---> Using cache---> 1ab999a18ce1
Step 9/11 : RUN chmod +x /root/pig_init.sh---> Using cache---> dff4a7c6bba7
Step 10/11 : EXPOSE 8848 9999 3000 4000---> Using cache---> d4e37e3952af
Step 11/11 : CMD ["/bin/bash","/root/pig_init.sh"]---> Using cache---> acb3d73b810a
Successfully built acb3d73b810a
Successfully tagged pig-service:v1.0

5. 容器化部署前端服务

（1）编写Dockerfile

编写Dockerfile：

[root@master Pig]# vi 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;"]

（2）构建镜像

构建镜像：

[root@master 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

6. 编排部署Pig快速开发平台

（1）编写docker-compose.yaml

编写docker-compose.yaml编排文件：

[root@master Pig]# vi docker-compose.yaml
version: '2'
services:pig-mysql:environment:MYSQL_ROOT_PASSWORD: rootrestart: alwayscontainer_name: pig-mysqlimage: pig-mysql:v1.0ports:- 3306:3306links:- pig-service:pig-registerpig-redis:image: pig-redis:v1.0ports:- 6379:6379restart: alwayscontainer_name: pig-redishostname: pig-redislinks:- pig-service:pig-registerpig-service:ports:- 8848:8848- 9999:9999restart: alwayscontainer_name: pig-servicehostname: pig-serviceimage: pig-service:v1.0extra_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:127.0.0.1stdin_open: truetty: trueprivileged: truepig-ui:restart: alwayscontainer_name: pig-uiimage: pig-ui:v1.0ports:- 8888:80links:- pig-service:pig-gateway

（2）部署服务

部署服务

[root@master 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

查看服务：

[root@master 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

等待3分钟左右，在浏览器上通过http://master_IP:8888访问Pig，如图所示：

图1

使用默认的账号和密码，输入验证码，点击登录。如图所示：