Docker 网络（四）——Docker 容器网络

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ubuntu@ubuntu:~$ ip -d link show1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 promiscuity 0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000    link/ether 08:00:27:4d:a8:3c brd ff:ff:ff:ff:ff:ff promiscuity 0 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000    link/ether 08:00:27:eb:24:7f brd ff:ff:ff:ff:ff:ff promiscuity 0 4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default     link/ether 02:42:da:dc:5d:c4 brd ff:ff:ff:ff:ff:ff promiscuity 0     bridge ubuntu@ubuntu:~$ ip addr show docker04: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default     link/ether 02:42:da:dc:5d:c4 brd ff:ff:ff:ff:ff:ff    inet 172.17.0.1/16 scope global docker0       valid_lft forever preferred_lft forever    inet6 fe80::42:daff:fedc:5dc4/64 scope link        valid_lft forever preferred_lft forever

安装完成docker 后自动生成网络 docker0
我们运行一个容器

ubuntu@ubuntu:~$  docker run -it --rm ubuntu:14.04 bashroot@ff4d3aec1c19:/# ip addr show eth073: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default     link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff    inet 172.17.0.2/16 scope global eth0       valid_lft forever preferred_lft forever    inet6 fe80::42:acff:fe11:2/64 scope link        valid_lft forever preferred_lft forever

容器与主机间基于网桥 docker0通信。

ubuntu@ubuntu:~$ ip -d link show4: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default     link/ether 02:42:da:dc:5d:c4 brd ff:ff:ff:ff:ff:ff promiscuity 0     bridge 78: veth6443df6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT group default     link/ether de:b1:a2:fb:6b:1d brd ff:ff:ff:ff:ff:ff promiscuity 1     veth ubuntu@ubuntu:~$ brctl  show bridge name bridge id    STP enabled    interfacesdocker0  8000.0242dadc5dc4  no   veth6443df6

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