基于 docker-compose 实现对 Nginx+Tomcat Web 服务的单机编排
作者：忙着长大#
- 2022-11-13 北京
本文字数：8080 字
阅读完需：约 27 分钟
1、安装 docker-compose
在 github 搜索 compose，点击 releases，选择版本下载对应系统的包，下载下来是可执行的二进制文件，直接 cp 到某个路径就可以直接使用 docker-compose 命令了。
root@yt:~# lsdocker-compose-linux-x86_64_go-2.11.1root@yt:~# cp -a docker-compose-linux-x86_64_go-2.11.1 /usr/local/bin/docker-composeroot@yt:~# chmod 777 /usr/local/bin/docker-compose复制代码
2、使用 docker-compose 编排文件实现对 nginx 服务的单机编排。
一个 docker-compose 文件可以编排多个服务，如下对 nginx 和 redis 同时进行编排。
root@yt:~/case1# cat docker-compose.yaml version: '3.8'services: nginx-server: image: nginx:1.22.0-alpine container_name: nginx-web1 expose: - 80 - 443 ports: - "80:80" - "443:443" #profiles: #基于配置文件指定要操作的目的容器 # - frontend env_file: - test.env deploy: resources: #资源限制 limits: cpus: '0.50' memory: 1024M reservations: cpus: '0.5' memory: 512M restart: always healthcheck: #添加服务健康状态检查 test: ["CMD", "curl", "-f", "http://127.0.0.1:80/index.html"] interval: 5s #健康状态检查的间隔时间，默认为30s timeout: 5s #单次检查的失败超时时间，默认为30s retries: 3 #连续失败次数默认3次，当连续失败retries次数后将容器置为unhealthy状态 start_period: 60s #60s后每间隔interval的时间检查一次，连续retries次后才将容器置为unhealthy状态, 但是start_period时间内检查成功就认为是检查成功并装容器置于healthy状态
redis-server: image: redis:6.2.7-alpine3.16 container_name: redis1 expose: - 6379 ports: - "6379:6379" #profiles: # - backend复制代码
docker-compose 可以通过 "-f" 去指定根据哪个编排文件进行部署 "up -d" 标识后台启动
root@yt:~/case1# docker-compose -f docker-compose.yaml up -d[+] Running 14/14 ⠿ redis-server Pulled 21.8s ⠿ ca7dd9ec2225 Pull complete 6.2s ⠿ 83276aa4de36 Pull complete 6.2s ⠿ 731cc432e6da Pull complete 6.4s ⠿ 93b7a4c8b2d7 Pull complete 16.6s ⠿ 55da7c6d9efa Pull complete 16.6s ⠿ ce2599643e43 Pull complete 16.7s ⠿ nginx-server Pulled 34.7s ⠿ 213ec9aee27d Pull complete 22.7s ⠿ 1bfd2b69cf63 Pull complete 29.4s ⠿ a19f4cc2e029 Pull complete 29.4s ⠿ 4ae981811a6d Pull complete 29.5s ⠿ 7a662f439736 Pull complete 29.5s ⠿ a317c3c2c906 Pull complete 29.5s[+] Running 3/3 ⠿ Network case1_default Created 0.0s ⠿ Container redis1 Started 0.4s ⠿ Container nginx-web1 Started 0.5s复制代码
docker-compose 是根据目录名称去区分不同的 project ， 在不同的目录下执行 docker-compose 去执行"docker-compose ps" 会看到不同的 project 的服务信息，如果目录下不存在 docker-compose 编排文件会报错。
root@yt:~/case1# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESb5ffaad4c517 nginx:1.22.0-alpine "/docker-entrypoint.…" 8 minutes ago Up 8 minutes (healthy) 0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:443->443/tcp, :::443->443/tcp nginx-web13598379a0c63 redis:6.2.7-alpine3.16 "docker-entrypoint.s…" 8 minutes ago Up 8 minutes 0.0.0.0:6379->6379/tcp, :::6379->6379/tcp redis1root@yt:~/case1# pwd/root/case1复制代码
root@yt:~# docker-compose psno configuration file provided: not found复制代码
执行如下命令可以停止指定文件的所有服务，并删除容器
root@yt:~/case1# docker-compose -f docker-compose.yaml down[+] Running 3/3 ⠿ Container redis1 Removed 0.2s ⠿ Container nginx-web1 Removed 0.2s ⠿ Network case1_default Removed 0.1s复制代码
3、使用 docker-compose 实现对 nginx + tomcat 服务的单机编排部署。
root@yt:~/case2# cat docker-compose.yaml version: '3.8'services: nginx-server: image: nginx:1.22.0-alpine container_name: nginx-web1# network_mode: bridge #网络1，使用docker安装后的默认网桥 expose: - 80 - 443 ports: - "80:80" - "443:443" networks: #网络2，使用自定义的网络，如果网络不存在则会自动创建该网络并分配子网,并且容器会有两块网卡 - front - backend links: - tomcat-server
tomcat-server: #image: tomcat:7.0.93-alpine image: registry.cn-hangzhou.aliyuncs.com/zhangshijie/tomcat-myapp:v1 container_name: tomcat-app1 ##network_mode: bridge #网络1，使用docker安装后的默认网桥 #expose: # - 8080 #ports: # - "8080:8080" networks: #网络2，使用自定义的网络，如果网络不存在则会自动创建该网络并分配子网,并且容器会有一块网卡 - backend links: - mysql-server
mysql-server: image: mysql:5.6.48 container_name: mysql-container# network_mode: bridge #网络1，使用docker安装后的默认网桥 volumes: - /data/mysql:/var/lib/mysql #- /etc/mysql/conf/my.cnf:/etc/my.cnf:ro environment: - "MYSQL_ROOT_PASSWORD=12345678" - "TZ=Asia/Shanghai" expose: - 3306 ports: - "3306:3306" networks: #网络2，使用自定义的网络，如果网络不存在则会自动创建该网络并分配子网,并且容器会有一块网卡 - backend
networks: front: #自定义前端服务网络,需要docker-compose创建 driver: bridge backend: #自定义后端服务的网络,要docker-compose创建 driver: bridge default: #使用已经存在的docker0默认172.17.0.1/16的网络 external: name: bridge复制代码
root@yt:~/case2# docker-compose -f docker-compose.yaml up -d WARN[0000] network default: network.external.name is deprecated in favor of network.name [+] Running 27/27 ⠿ tomcat-server Pulled 602.0s ⠿ 2d473b07cdd5 Pull complete 272.6s ⠿ 880042ad5e39 Pull complete 272.8s ⠿ 7aa7ec8f962d Pull complete 513.4s ⠿ 8cd93c3763ca Pull complete 600.5s ⠿ d845e6db193e Pull complete 600.5s ⠿ 8e23c1c5d21b Pull complete 600.5s ⠿ c0f600ab4693 Pull complete 600.6s ⠿ 1b56f533d5b9 Pull complete 600.7s ⠿ 2c6fc468c4a5 Pull complete 600.9s ⠿ 3ca7cd0a550d Pull complete 600.9s ⠿ 333255a680d8 Pull complete 600.9s ⠿ b5ef3a8dbd15 Pull complete 600.9s ⠿ b816ffee4fae Pull complete 601.0s ⠿ 0fee8bb38f0b Pull complete 601.1s ⠿ mysql-server Pulled 484.5s ⠿ 7d2977b12acb Pull complete 341.0s ⠿ 5fb8400e7f07 Pull complete 342.7s ⠿ 234877fbb165 Pull complete 350.9s ⠿ 6fe1021f12f3 Pull complete 354.9s ⠿ 7e36fe6b53f0 Pull complete 356.9s ⠿ 996ec709c11b Pull complete 372.5s ⠿ 5198b7523387 Pull complete 374.4s ⠿ cc9bdad4dcc0 Pull complete 376.4s ⠿ 380cd37ad979 Pull complete 476.1s ⠿ d64465acf034 Pull complete 477.1s ⠿ d4ee6606b3ab Pull complete 479.1s[+] Running 5/5 ⠿ Network case2_backend Created 0.0s ⠿ Network case2_front Created 0.0s ⠿ Container mysql-container Started 0.6s ⠿ Container tomcat-app1 Started 0.6s ⠿ Container nginx-web1 Started 1.1s复制代码
root@yt:~/case2# docker-compose psWARN[0000] network default: network.external.name is deprecated in favor of network.name NAME COMMAND SERVICE STATUS PORTSmysql-container "docker-entrypoint.s…" mysql-server running 0.0.0.0:3306->3306/tcp, :::3306->3306/tcpnginx-web1 "/docker-entrypoint.…" nginx-server running 0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:443->443/tcp, :::443->443/tcptomcat-app1 "/apps/tomcat/bin/do…" tomcat-server running 8080/tcp, 8443/tcp复制代码
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