1 网络通信

容器与容器的交互
docker0 网桥, 相当于交换机, 不同容器的数据通信通过它交换,
vetchx 一段固定容器的虚拟网卡, 一段固定在docker0. 每个容器有一个
[root@izwz97j0sus9exlvpgweqpz ~]# ifconfig
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
ether 02:42:fd:b5:e3:6b txqueuelen 0 (Ethernet)
RX packets 28766 bytes 14584874 (13.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 28408 bytes 6915699 (6.5 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.250 netmask 255.255.255.0 broadcast 192.168.1.255
ether 00:16:3e:04:a1:55 txqueuelen 1000 (Ethernet)
RX packets 17713096 bytes 3710239255 (3.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 15783439 bytes 5332758803 (4.9 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
vetha91557d: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 7e:8d:64:f7:24:6a txqueuelen 0 (Ethernet)
RX packets 782 bytes 116368 (113.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1029 bytes 153360 (149.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethee6ce6c: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether fa:fe:74:84:92:fe txqueuelen 0 (Ethernet)
RX packets 1025 bytes 110190 (107.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1308 bytes 98128 (95.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

容器网络访问通过NAT实现
2 网络模式修改

3 网络隔离