050、创建overlay网络（2019-03-15 周五）
在host01中创建overlay网络 ov_net1
在下面的例子中可以看到，我们在host01上创建的overlay类型网络，会自动出现在host02上，该网络的name、id、IPAM都一样
这是因为host01将ov_net1的信息存到了consul中，host02从consul读取到了新创建的网络，自动同步到host02上
IPAM（IP Address Management）
root@host01:~# docker network create -d overlay ov_net1
609020e03ff4ac5fb1aad73e23bfb22bc288463663e5aba775ed06263077c242
root@host01:~# docker network ls
NETWORK ID NAME DRIVER SCOPE
5f1cb3e7ea16 bridge bridge local
a08d5e1df638 host host local
83f08e15caa8 none null local
609020e03ff4 ov_net1 overlay global
root@host01:~# docker network inspect ov_net1
[
{
"Name": "ov_net1",
"Id": "609020e03ff4ac5fb1aad73e23bfb22bc288463663e5aba775ed06263077c242",
"Created": "2019-03-15T08:52:44.452192114+08:00",
"Scope": "global",
"Driver": "overlay",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "10.0.0.0/24",
"Gateway": "10.0.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {},
"Options": {},
"Labels": {}
}
]
-----------------------------------------------------------------------------------------
root@host02:~# docker network ls
NETWORK ID NAME DRIVER SCOPE
6e2bde8f59ac bridge bridge local
54f47d6227e5 host host local
042431e6b445 none null local
609020e03ff4 ov_net1 overlay global
root@host02:~# docker network inspect ov_net1
[
{
"Name": "ov_net1",
"Id": "609020e03ff4ac5fb1aad73e23bfb22bc288463663e5aba775ed06263077c242",
"Created": "2019-03-15T08:52:44.452192114+08:00",
"Scope": "global",
"Driver": "overlay",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "10.0.0.0/24",
"Gateway": "10.0.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {},
"Options": {},
"Labels": {}
}
]
