Docker-Compose-file

发表于 更新于 分类于 Waline：

Compos file 版本3以上

Compos file v3官网

build

只支持单机运行

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version: "3" #指明版本3，docker stack需要版本3以上
services:
  webapp: 
    build:  #集群部署会忽略构建镜像，stack只支持提前构建好镜像
      context: ./dir #构建上下文路径
      dockerfile: Dockerfile-alternate  #构建文件
      args:  #构建参数
        buildno: 1

configs (swarm模式)

只支持集群模式运行，只需要在单机上引用，会自动在其他节点创建配置

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version: "3.3"
services:
  redis:
    image: redis:latest
    deploy:
      replicas: 1
    configs:
      - my_config
      - my_other_config
configs:
  my_config:
    file: ./my_config.txt
  my_other_config:
    external: true
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version: '3'
services:
  nginx:
    image: harbor.iexxk.dev/library/web-gate-id-v3:S3.2.1
    restart: unless-stopped
    ports:
      - "88:80"
#    volumes:
#      - ./config/default.conf:/etc/nginx/conf.d/default.conf     不支持集群使用configs代替 
    configs:
      - source: nginx_config
        target: /etc/nginx/conf.d/default.conf
    env_file:
      - ./config/nginx.env #env也支持集群    
configs:
  nginx_config:
    file: ./config/default.conf  #支持集群

command

会覆盖dockerfile里面的命令例如：

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command: bundle exec thin -p 3000 #docker-compose.yml覆盖dockerfile的命令
command: ["bundle", "exec", "thin", "-p", "3000"] #dockerfile等效于上面的命令

deploy(swarm模式)

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version: '3.2'
services:
  redis:
    image: redis:alpine
    labels: #容器上的标签
       com.example.description: " containers 上的标签"
    deploy:
      mode: global #可选global(全局模式，每台机一个)/replicated(多台)
      replicas: 6 #部署的总数量
      update_config:
        parallelism: 2
        delay: 10s
      restart_policy:
        condition: on-failure
      endpoint_mode: vip  #可选vip(默认)/dnsrr，主要是IP啥的
      labels: #服务器上的标签
        com.example.description: "This label will appear on the web service"
      placement: #指定部署的信息
        constraints:
          - node.role == manager #只在管理节点运行
          - engine.labels.operatingsystem == ubuntu 14.04
        preferences:
          - spread: node.labels.zone
      resources: #资源限制
        limits:
#cpu个数0.5指一个cpu的50%，2.00指2个cpu（猜测99%）其中docker stats命令可以查看cpu使用率和内存使用，其中cpu使用率是指单核的使用率，也就是如果cpus设置为2，使用率200%就代表2个核都使用达到了100%        
          cpus: '0.50'  
          memory: 50M
        reservations:
          cpus: '0.25'
          memory: 20M
      restart_policy: #重启策略
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s
      update_config: #更新配置策略
        parallelism: 2
        delay: 10s
        order: stop-first
    depends_on:  #依赖的服务模块，在db启动才启动服务，但是不能保证db启动完，如果要设置启动顺序见
    #https://docs.docker.com/compose/startup-order/
      - db
      - redis
    healthcheck: #健康检查
      test: ["CMD", "curl", "-f", "http://localhost"]
      interval: 1m30s
      timeout: 10s
      retries: 3
      start_period: 40s
    logging: #日志服务
      driver: syslog
      options:
        syslog-address: "tcp://192.168.0.42:123"
    volumes: #自定义挂在卷
      - type: volume
      source: mydata
      target: /data
      volume:
      nocopy: true
      - type: bind
      source: ./static
      target: /opt/app/static
    ports:  #自定义端口
      - target: 80
        published: 8080
        protocol: tcp
        mode: host

docker-compose 网络互相访问

让一个docker-compos里面的服务verse-web-admin-novel-1访问另一个gate-v3_defaul中的spring-gateway:8080

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#查看网络
[root@frts-p1 verse]# docker network ls
NETWORK ID     NAME              DRIVER    SCOPE
e8a9788c1674   bridge            bridge    local
305ea0a9d372   gate-v3_default   bridge    local
2770fd13abc4   host              host      local
0a9e80edc8d3   verse_default     bridge    local
#查看容器名
[root@frts-p1 verse]# docker ps
CONTAINER ID	IMAGE	COMMAND                CREATED       STATUS       PORTS       NAMES
db427829805e	web:1	"/docker-entrypoint.…" 2 minute ago	 Up 2 second  92->80/tcp  verse-web-admin-novel-1
69f449d6f2aa	gat:1 "sh -c 'java $JAVA_O…" 2 months ago  Up 2 months  8080/tcp    gate-v3-spring-gateway-1
#连接网络 docker network connect <目标网络名称> <容器ID或名称>
[root@frts-p1 verse]# docker network connect gate-v3_default verse-web-admin-novel-1

docker-compose配置verse文件：

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version: '3'
services:
  web-admin-novel:
    image: harbor.hcytech.dev/library/web-admin-novel:S1.3.1
    restart: unless-stopped
    ports:
      - "92:80"
    volumes:
      - ./config/web-admin.conf:/etc/nginx/conf.d/default.conf

web-admin.conf配置：

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# 后端接口代理地址
    upstream api_server {
      server spring-gateway:8080;
    }
    server {
      listen       80;
      server_name   localhost;
      underscores_in_headers on;
      client_max_body_size 256m;
      location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
        try_files $uri $uri/ /index.html =404;
      }
      location /api/ {
        rewrite ~/api/(.*)$ /$1 break;
        proxy_pass http://api_server/api/;
        proxy_set_header Host $host;
        proxy_pass_request_headers on;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_read_timeout 60000;
        proxy_send_timeout 60000;
        proxy_intercept_errors on;  # 开启拦截错误
        error_page 500 = /500handler;
        error_page 404 = /404handler;
      }      
    }

docker-compose配置gate-v3文件：

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version: '3'
services:
  spring-gateway:
    image: harbor.hcytech.dev/library/hcytech-gateway:S1.0.3
    volumes:
      - ./config/application.yaml:/home/application.yaml
    env_file:
      - ./config/gateway.env
      - ./config/redis.env

问题

错误services.nginx.ports.0 must be a string or number是因为自定义端口,只支持3.2以上

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version: '3.2' 
 ports:  #自定义端口
   - target: 80
     published: 8080
     protocol: tcp
     mode: host