Docker 容器无法 ping 主机

Question

我正在关注本教程

https://docs.docker.com/articles/networking/#between-containers

我使用了以下命令

$ sudo brctl addbr bridge0
$ sudo ip addr add 192.168.0.160/24 dev bridge0
$ sudo ip link set dev bridge0 up

# Confirming that our bridge is up and running

$ ip addr show bridge0
4: bridge0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state UP group default
    link/ether 66:38:d0:0d:76:18 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.160/24 scope global bridge0
       valid_lft forever preferred_lft forever

# Tell Docker about it and restart (on Ubuntu)

$ echo 'DOCKER_OPTS="-b=bridge0"' >> /etc/default/docker
$ sudo service docker start

它看起来工作正常，因为我可以看到我的所有容器都在该范围内获得 ip。

现在因为我有 3 个容器

mysql 192.168.0.3
redis 192.168.0.5
webserver 192.168.0.6

现在，如果我从网络服务器 ping redis 它可以工作

但我 cma 无法 ping 主机192.168.0.160它说目标主机无法恢复

信息

vagrant@ubuntu-docker-base:/mydocker/containers$ brctl show
bridge name bridge id       STP enabled interfaces
bridge0  8000.7e8945d   no  veth1a8b959
                            veth404a3b2
                            veth7959157
docker0     8000.5689799    no

容器

root@286329032cd5:/# ip route
default via 192.168.0.160 dev eth0
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.5
root@286329032cd5:/# ping 192.168.0.3
PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
64 bytes from 192.168.0.3: icmp_seq=1 ttl=64 time=0.125 ms
64 bytes from 192.168.0.3: icmp_seq=2 ttl=64 time=0.130 ms
64 bytes from 192.168.0.3: icmp_seq=3 ttl=64 time=0.072 ms
^C
--- 192.168.0.3 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.072/0.109/0.130/0.026 ms
root@286329032cd5:/# ping 192.168.0.160
PING 192.168.0.160 (192.168.0.160) 56(84) bytes of data.
From 192.168.0.5 icmp_seq=1 Destination Host Unreachable
From 192.168.0.5 icmp_seq=2 Destination Host Unreachable
From 192.168.0.5 icmp_seq=3 Destination Host Unreachable
^C
--- 192.168.0.160 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5032ms
pipe 3
root@286329032cd5:/#

Answer 1

从你的手册中：

如果您已经启动并运行了 Docker，并且仍配置了旧的 docker0，那么您可能需要首先停止服务并删除接口：

# Stopping Docker and removing docker0

$ sudo service docker stop
$ sudo ip link set dev docker0 down
$ sudo brctl delbr docker0