docker network

network官方文档：https://docs.docker.com/engine/reference/commandline/network/

命令

docker network是管理网络。可以使用子命令创建、检查、列出、删除、修剪、连接和断开网络。

docker network COMMAND

命令	描述
docker network connect	将容器连接到网络
docker network create	创建网络
docker network disconnect	断开容器与网络的连接
docker network inspect	在一个或多个网络上显示详细信息
docker network ls	列表网络
docker network prune	删除所有未使用的网络
docker network rm	删除一个或多个网络

docker network ls：查看所有的docker网络

docker network ls

docker网络网络模式初始只有3种：bridge、host、none

[root@VM-0-3-centos pdx_haokai]# docker network ls
NETWORK ID     NAME      DRIVER    SCOPE
ed8612b1d525   bridge    bridge    local
efbd70fbac53   host      host      local
8b375c8baa85   none      null      local
[root@VM-0-3-centos pdx_haokai]#

docker network create：创建自定义网络

docker network create --driver bridge --subnet 192.168.0.0/16 --gateway 192.168.0.1 mynet

参数解析：
–driver bridge：是默认的，可以不写
–subnet：子网，最多支持65535个，配置/16就是，配置/24就是255
–gateway：网关，表示从哪里路由出去，一般为子网对应的0.1，路由器为0.1也是这个原理

运行输出：

[root@VM-0-3-centos pdx_haokai]# docker network create --driver bridge --subnet 192.168.0.0/16 --gateway 192.168.0.1 mynet
a8a455ea111c8b3458d0ae24e76dc47b8eb64c65ef42ccb7ef4412559ce78e69
[root@VM-0-3-centos pdx_haokai]# docker network ls
NETWORK ID     NAME      DRIVER    SCOPE
ed8612b1d525   bridge    bridge    local
efbd70fbac53   host      host      local
a8a455ea111c   mynet     bridge    local
8b375c8baa85   none      null      local
[root@VM-0-3-centos pdx_haokai]#

docker network inspect [NETWORK ID] ：根据NETWORK ID查看网络

[root@VM-0-3-centos pdx_haokai]# docker network inspect a8a455ea111c
[{"Name": "mynet","Id": "a8a455ea111c8b3458d0ae24e76dc47b8eb64c65ef42ccb7ef4412559ce78e69","Created": "2022-01-19T21:30:34.564255758+08:00","Scope": "local","Driver": "bridge","EnableIPv6": false,"IPAM": {"Driver": "default","Options": {},"Config": [{"Subnet": "192.168.0.0/16","Gateway": "192.168.0.1"}]},"Internal": false,"Attachable": false,"Ingress": false,"ConfigFrom": {"Network": ""},"ConfigOnly": false,"Containers": {},"Options": {},"Labels": {}}
]
[root@VM-0-3-centos pdx_haokai]#