使用docker compose部署服务【转】

来自：http://blog.csdn.net/yl_1314/article/details/53761049

谈到微服务的话题，技术上我们往往会涉及到多服务、多容器的部署与管理。  Docker 有三个主要的作用：Build, Ship和Run。使用docker compose我们可以在Run的层面解决很多实际问题，如：通过创建compose(基于YUML语法)文件，在这个文件上面描述应用的架构，如使用什么镜像、数据卷、网络、绑定服务端口等等，然后再用一条命令就可以管理所有的服务（如启动、停止、重启、日志监控等等）。  本文通过发布3个APP(App1,App2,App3），来演示Docker在服务发布、网络、共享分区以及信息隔离与连通方面的工作：  1.安装Compose:

[root@docker ~]# curl -L "https://github.com/docker/compose/releases/download/1.9.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose [root@docker ~]# docker-compose version docker-compose version 1.9.0, build 2585387 docker-py version: 1.10.6 CPython version: 2.7.9 OpenSSL version: OpenSSL 1.0.1t 3 May 2016 123456 123456

2.服务物理框架 

说明：  a.Container1和2共在一个network namespace（netName1)内，Container3独立network namespace(netName2)  b.Container1挂载了一个系统卷（/opt/conf)到/mnt  c.Container3挂载了一个系统卷（./app/web)到/usr/share/nginx/html  c.Container1,2,3 nginx监听端口分别为:8080,8081,8082

3.docker-compose.yml 内容

[root@docker compose]# more docker-compose.yml version: '2' services: App1: image: nginx ports: - "8080:80" networks: - "netName1" volumes: - /opt/conf/:/mnt App2: image: nginx ports: - "8081:80" networks: - "netName1" volumes: - /opt/conf/:/mnt App3: image: nginx ports: - "8082:80" networks: - "netName2" networks: netName1: driver: bridge netName2: driver: bridge 123456789101112131415161718192021222324252627282930 123456789101112131415161718192021222324252627282930

4.运行

[root@docker compose]# docker-compose up Creating network "compose_netName1" with driver "bridge" Creating network "compose_netName2" with driver "bridge" Creating volume "compose_vol1" with local driver Creating compose_App2_1 Creating compose_App1_1 Creating compose_App3_1 1234567 1234567

在后台运行：[root@docker compose]# docker-compose up -d

5.查看容器运行状态

[root@docker compose]# docker-compose ps Name Command State Ports ----------------------------------------------------------------------------- compose_App1_1 nginx -g daemon off; Up 443/tcp, 0.0.0.0:8080->80/tcp compose_App2_1 nginx -g daemon off; Up 443/tcp, 0.0.0.0:8081->80/tcp compose_App3_1 nginx -g daemon off; Up 443/tcp, 0.0.0.0:8082->80/tcp 123456 123456

其他命令：

[root@docker compose]# docker-compose restart #重启所有容器 [root@docker compose]# docker-compose restart App1 #重启App1 [root@docker compose]# docker-compose stop #停止所有容器 [root@docker compose]# docker-compose stop App1 #停止App1 1234 1234

6.验证网络隔离：  a.到App1 ping App2

[root@docker compose]# docker-compose exec App1 bash root@dd01fa7315ae:/# ping App2 PING App2 (172.18.0.3): 56 data bytes 64 bytes from 172.18.0.3: icmp_seq=0 ttl=64 time=0.059 ms 64 bytes from 172.18.0.3: icmp_seq=1 ttl=64 time=0.108 ms 64 bytes from 172.18.0.3: icmp_seq=2 ttl=64 time=0.062 ms 64 bytes from 172.18.0.3: icmp_seq=3 ttl=64 time=0.062 ms 1234567 1234567

成功ping通  b.到App2 ping App1和App3

[root@docker compose]# docker-compose exec App2 bash root@1905b2a875e3:/# ping App1 PING App1 (172.18.0.2): 56 data bytes 64 bytes from 172.18.0.2: icmp_seq=0 ttl=64 time=0.043 ms 64 bytes from 172.18.0.2: icmp_seq=1 ttl=64 time=0.089 ms 64 bytes from 172.18.0.2: icmp_seq=2 ttl=64 time=0.085 ms 123456 123456

App2 to App3-成功

[root@docker compose]# docker-compose exec App3 bash root@595f744e8634:/# ping App1 PING App1 (172.31.213.13): 56 data bytes ....#App3 to App1失败 root@595f744e8634:/# ping App2 PING App2 (172.31.213.13): 56 data bytes ....#App3 to App2失败 1234567 1234567

7.验证共享卷  a. 在host /opt/conf/ 目录下新建nginx.conf 文件

[root@docker conf]# pwd /opt/conf [root@docker conf]# touch nginx.conf 123 123

b.登录到App1 和App2查看

[root@docker compose]# docker-compose exec App1 bash root@49d702fc8606:/# cd /mmt root@49d702fc8606:/mnt# ls nginx.conf#成功挂载 [root@docker compose]# docker-compose exec App2 bash root@1d161428d4dd:/# cd /mnt root@1d161428d4dd:/mnt# ls nginx.conf#成功挂载 12345678 12345678

c. 在App3中挂载文件到nginx  修改docker-compose.yml App3:

App3: image: nginx volumes: - ./app/web/:/usr/share/nginx/html ports: - "8082:80" networks: - "netName2" 12345678 12345678

在host ./app/web 中添加 app3.html

[root@docker web]# app3.html [root@docker web]# ls app3.html [root@docker web]# more app3.html <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Welcome to leonyan's home, this is app3</title> </head> <body> Welcome to leonyan's home, this is app3! </body> </html> [root@docker compose]# cd app/web/ 12345678910111213141516 12345678910111213141516

访问App3 nginx： 

8.总结  本文演示了通过 Docker Compose进行多容器创建，以及容器间服务的管理，如网络隔离、卷数据共享。以及对容器的日常管理。