033、如何自定义容器网络(2019-02-20 周三)

 
docker 网络除了 none、host、bridge这三个自动创建的网络,用户也可以根据业务需求创建 user-defined 网络
 
docker 提供了三种user-defined 网络驱动:bridge、overlay和macvlan。overlay和macvlan用于创建跨主机的网络,将在后面的章节进行学习。
 
创建自定义bridge网络
 
root@docker-lab:~# docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
b41bf72cd691        bridge              bridge              local
e5cb8d603efd        host                host                local
f9dc6032baba        none                null                local
root@docker-lab:~# brctl show
bridge name    bridge id        STP enabled    interfaces
docker0        8000.02420e6cb404    no        
root@docker-lab:~# docker network create --driver bridge my_net01
b4372dfaff116af33202d3c4d8ce887da85a08870a4b77811882f8cdd69a19bf
root@docker-lab:~# docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
b41bf72cd691        bridge              bridge              local
e5cb8d603efd        host                host                local
b4372dfaff11        my_net01            bridge              local
f9dc6032baba        none                null                local
root@docker-lab:~# brctl show
bridge name    bridge id        STP enabled    interfaces
br-b4372dfaff11        8000.02427eb674da    no        
docker0        8000.02420e6cb404    no        
root@docker-lab:~# docker network inspect my_net01
[
    {
        "Name": "my_net01",
        "Id": "b4372dfaff116af33202d3c4d8ce887da85a08870a4b77811882f8cdd69a19bf",
        "Created": "2019-02-20T09:03:12.025450041+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16",
                    "Gateway": "172.18.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {},
        "Options": {},
        "Labels": {}
    }
]
root@docker-lab:~# ifconfig
br-b4372dfaff11 Link encap:Ethernet  HWaddr 02:42:7e:b6:74:da  
          inet addr:172.18.0.1  Bcast:172.18.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
 
 
 
在创建网络的时候会自动分配一段ip地址,我们也可以在创建网络的时候指定
 
在创建容器的时候,我们还可以给容器指定IP,但必须是使用 --subnet 参数创建的网络才可以
 
root@docker-lab:~# docker network create --driver bridge --subnet 192.168.0.0/16 --gateway  192.168.0.1 my_net02
9b5a95b43caef588095b39b4a5ddfd48ed008985f6e4b364db8239eeee18d5ba
root@docker-lab:~# ifconfig
br-9b5a95b43cae Link encap:Ethernet  HWaddr 02:42:ee:8c:e8:3f  
          inet addr:192.168.0.1  Bcast:192.168.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
root@docker-lab:~# docker network inspect my_net02
[
    {
        "Name": "my_net02",
        "Id": "9b5a95b43caef588095b39b4a5ddfd48ed008985f6e4b364db8239eeee18d5ba",
        "Created": "2019-02-20T09:10:31.02951614+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@docker-lab:~# docker run -it --network=my_net02 busybox
/ # ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
5496: eth0@if5497: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
    link/ether 02:42:c0:a8:00:02 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.2/16 brd 192.168.255.255 scope global eth0
       valid_lft forever preferred_lft forever
 
root@docker-lab:~# docker run -it --network=my_net02 --ip 192.168.9.9 busybox
/ # ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
5498: eth0@if5499: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
    link/ether 02:42:c0:a8:09:09 brd ff:ff:ff:ff:ff:ff
    inet 192.168.9.9/16 brd 192.168.255.255 scope global eth0
       valid_lft forever preferred_lft forever
/ #
 

 

posted @ 2019-02-20 09:22  三角形  阅读(151)  评论(0编辑  收藏  举报