docker-compose自定义网络，固定容器ip地址

首先明确两点：

1只有自定义网络，才能手工指定每个容器的ip。默认的bridge是不行的！

2 手工设定了网段比如172.19.0.0   不影响docker在host装的网卡docker0 的172.17.0.1

  容器内的172.19.0.XX  还是可以通过172.17.0.1访问到主机。

 

docker-compose.yml  参考官网 https://docs.docker.com/compose/compose-file/#network-configuration-reference

version: '3.7'
services:
   x1:
      image: XXX
      restart: always
      tty: true
      networks:
         mynet1:
            ipv4_address: 172.19.0.2
 
networks:
   mynet1:
      ipam:
         config:
         - subnet: 172.19.0.0/16

说明：
#gateway是网关地址
subnet是网络号段
mynet1是自定义的网络名称

 

几点说明：

1 2以前，可以在ipam里指定gateway  3以后不许了；

2 静态指定ip，则每个容器都要静态指定，添加networks 部分

3 运行docker-compose up 首先会创建network 注意之前如果已经运行过多个不同工程的docker-compose 可能已经自动创建了很多network

  这样如果IP网段已经分配过了，就会失败:

ERROR: Pool overlaps with other one on this address space

类似地，此外如果已经创建了network mynet1的网段 为 172.28.0.0，但是想改成172.19.0.1，也会说失败

  这样都需要清理一下无效的network

  清除各种不用的docker相关东西 参考  https://blog.csdn.net/wennuanddianbo/article/details/78453325

docker network prune

 4 3以后无法指定IP地址类型。只能是ipV6，在node里

const requestIp = require('request-ip');
...
app.use(requestIp.mw())
...
req.clientIp

 

得到的都是ipv6地址，都在ipv4地址前都补上了::fff:

形如

::ffff:172.19.0.10

 

 

docker-compose ps

docker-compose -f docker-compose.yml down

---------------------

version: '3.6'
services:
mysql:
image: harbor.xjgreat.com:8084/davinci/mysql:1.0
restart: always
environment:
- MYSQL_ROOT_PASSWORD=abc123123
- MYSQL_DATABASE=davinci
ports:
- 63306:3306
volumes:
- mysql_data:/var/lib/mysql
- davinci_initdb:/docker-entrypoint-initdb.d:ro
networks:
mynet1:
ipv4_address: 192.1.0.2

davinci:
environment:
- MYSQL_CONN=jdbc:mysql://mysql:3306/davinci?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
- DB_USER=root
- DB_PWD=abc123123
- MAIL_HOST=smtp.exmail.qq.com
- MAIL_PORT=465
- MAIL_STMP_SSL=true
- MAIL_USER=pingtaiceshi@xjgreat.com
- MAIL_PWD=Platform123
- MAIL_NICKNAME=davinci
image: "harbor.xjgreat.com:8084/davinci/davinci:1.0"
ports:
- 8083:8080
command: ["./bin/start.sh", "mysql:3306", "--", "start-server.sh"]
restart: always
volumes:
- davinci_logs:/opt/davinci/logs
- davinci_userfiles:/opt/davinci/userfiles
- davinci_initdb:/initdb
networks:
mynet1:
ipv4_address: 192.1.0.3

davinci_skin:
environment:
- MYSQL_CONN=jdbc:mysql://mysql:3306/davinci_skin?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
- DB_USER=root
- DB_PWD=abc123123
image: "harbor.xjgreat.com:8084/davinci/davinci_skin:1.0"
ports:
- 8082:8080
restart: always
networks:
mynet1:
ipv4_address: 192.1.0.4

networks:
mynet1:
ipam:
config:
- subnet: 192.1.0.0/16

volumes:
davinci_userfiles:
davinci_logs:
davinci_initdb:
mysql_data:

 

docker-compose -f docker-compose.yml config

docker-compose -f docker-compose.yml up -d -t 120

docker-compose ps