Docker命令3：docker network(管理网络)

> 以下命令中，若有对 **NETWORK** 操作时，可以写 NETWORK ID 或者 NAME
NAME 不可简写，可以写几个字母后使用`tab`键自动补全，
NETWORK ID 可以简写，简写至可以唯一确定即可，简写规则同容器简写规则

### create 创建一个网络

```bash
docker network create [OPTIONS] NETWORK

Options:
      --attachable           Enable manual container attachment
      --aux-address map      Auxiliary IPv4 or IPv6 addresses used by Network driver (default map[])
      --config-from string   The network from which copying the configuration
      --config-only          Create a configuration only network
  -d, --driver string        Driver to manage the Network (default "bridge") # 管理网络的驱动程序(默认 bridge ) 可选值：bridge ipvlan macvlan overlay
      --gateway strings      IPv4 or IPv6 Gateway for the master subnet
      --ingress              Create swarm routing-mesh network
      --internal             Restrict external access to the network
      --ip-range strings     Allocate container ip from a sub-range
      --ipam-driver string   IP Address Management Driver (default "default")
      --ipam-opt map         Set IPAM driver specific options (default map[])
      --ipv6                 Enable IPv6 networking
      --label list           Set metadata on a network
  -o, --opt map              Set driver specific options (default map[])
      --scope string         Control the network's scope
      --subnet strings       Subnet in CIDR format that represents a network segment
```

```bash
# 创建一个网络，指定驱动为 bridge
docker network create -d bridge mybridge
```

### ls 网络列表

```bash
docker network ls [OPTIONS]

Options:
  -f, --filter filter   Provide filter values (e.g. 'driver=bridge')
      --format string   Pretty-print networks using a Go template
      --no-trunc        Do not truncate the output
  -q, --quiet           Only display network IDs
```

```bash
# 网络列表
docker network ls
# 列出driver为bridge的网络
docker network ls -f driver=bridge
```

列 | 说明 | 注
---|---|---
NETWORK ID | ID | --no-trunc 显示完整ID
NAME | 名称 |
DRIVER | 驱动 |
SCOPE | 范围 |

### inspect 显示一个或多个网络上的详细信息

```bash
docker network inspect [OPTIONS] NETWORK [NETWORK...]
# 此命令可以简写如下命令，但是 docker inspect 不仅仅可以查看 NETWORK
docker inspect [OPTIONS] NAME|ID [NAME|ID...]

Options:
  -f, --format string   Format the output using the given Go template
  -v, --verbose         Verbose output for diagnostics
```

```bash
# 显示bridge网络详细信息
docker network inspect bridge
```

> inspect详细内容后期整理

### rm 删除一个或多个网络

```bash
docker network rm NETWORK [NETWORK...]
```

```bash
# 移除自己创建的网络
# docker创建好后默认创建的 bridge host none 网络无法移除
docker network rm mybridge
```

### prune 删除所有未使用的网络

```bash
docker network prune [OPTIONS]

Options:
      --filter filter   Provide filter values (e.g. 'until=<timestamp>')
  -f, --force           Do not prompt for confirmation # 不提示确认
```

```bash
# 移除所有未使用的网络（-f 不提示确认）
docker network prune -f
```

### connect 将容器连接到网络

```bash
docker network connect [OPTIONS] NETWORK CONTAINER

Options:
      --alias strings           Add network-scoped alias for the container
      --driver-opt strings      driver options for the network
      --ip string               IPv4 address (e.g., 172.30.100.104)
      --ip6 string              IPv6 address (e.g., 2001:db8::33)
      --link list               Add link to another container
      --link-local-ip strings   Add a link-local address for the container
```

```bash
# 将test1容器连接到自己创建的mybridge网络
docker network connect mybridge test1
```

### disconnect 断开容器与网络的连接

```bash
docker network disconnect [OPTIONS] NETWORK CONTAINER

Options:
  -f, --force   Force the container to disconnect from a network # 强制容器断开与网络的连接
```

```bash
# 将test1容器与默认网络断开连接
docker network disconnect bridge test1
```