Docker网络的none和host（17）

一、none

1、新建容器test3连接到none

[code][root@localhost ~]# docker run -it -d --name test3 --network none python
465ba8498be7bdf88cfe77054c14b943a7895833051db2902c9e7dba9adc82f1

2、查看none，会发现容器test3没有任何IP地址，相当于是完全孤立

[code][root@localhost ~]# docker network inspect none
[
{
"Name": "none",
"Id": "7ed63a8db0963c5570ff468df94e0ef2b6f14e07c584bd544ab58b9b91114504",
"Created": "2019-02-14T01:53:32.909743191-05:00",
"Scope": "local",
"Driver": "null",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": []
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"465ba8498be7bdf88cfe77054c14b943a7895833051db2902c9e7dba9adc82f1": {
"Name": "test3",
"EndpointID": "c0d3b93a85193f1e63b54e6fbbca0a20c886a85e831f7c1de4382
d541f483081",                "MacAddress": "",
"IPv4Address": "",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]

3、

[code][root@localhost ~]# docker exec -it test3 /bin/sh
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default ql
en 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

二、host

1、新建容器test4连接到none

[code][root@localhost ~]# docker run -it -d --name test4 --network host python
17ad1fba02f30c446ff3fbe331e251efdd26ed3e46a4c47467a3e4825358db37

2、ip a，会发现容器test4是与宿主机共享网络的，这容易导致端口冲突

[code][root@localhost ~]# docker exec -it test4 /bin/sh
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default ql
en 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
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP grou
p default qlen 1000    link/ether 08:00:27:86:e3:e7 brd ff:ff:ff:ff:ff:ff
inet 192.168.13.220/21 brd 192.168.15.255 scope global dynamic enp0s3
valid_lft 22616sec preferred_lft 22616sec
inet6 fe80::f8da:1de:daac:3ce0/64 scope link
valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN gro
up default qlen 1000    link/ether 52:54:00:7f:90:e1 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state D
OWN group default qlen 1000    link/ether 52:54:00:7f:90:e1 brd ff:ff:ff:ff:ff:ff
5: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group
default     link/ether 02:42:80:45:7a:69 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:80ff:fe45:7a69/64 scope link
valid_lft forever preferred_lft forever
6: br-7d34e6c0f687: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state U
P group default     link/ether 02:42:4f:ee:0a:fb brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-7d34e6c0f687
valid_lft forever preferred_lft forever
inet6 fe80::42:4fff:feee:afb/64 scope link
valid_lft forever preferred_lft forever
10: vethf0c60b2@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master
br-7d34e6c0f687 state UP group default     link/ether c2:cb:5d:97:0a:36 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::c0cb:5dff:fe97:a36/64 scope link
valid_lft forever preferred_lft forever
12: vethdf15ebc@if11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue maste
r docker0 state UP group default     link/ether 56:c6:04:4b:19:5f brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::54c6:4ff:fe4b:195f/64 scope link
valid_lft forever preferred_lft forever
14: veth041aaa8@if13: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue maste
r br-7d34e6c0f687 state UP group default     link/ether fe:36:f9:f0:5e:e7 brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::fc36:f9ff:fef0:5ee7/64 scope link
valid_lft forever preferred_lft forever