docker无法指定容器相连
docker配置:
root@ubuntu> ps -ef | grep docker
root xxxxx /usr/bin/dockerd -H fd:// -b=br0 --icc=false --iptables=true
先起一个web主机:
docker run -d --name web -p 8080:80 php-fpm:5.4
再起一个test主机测试连接:
docker run -dit --name test --link web:web blackhole/ubuntu:0.1 bash
查看iptables filter的表:
root@ubuntu> sudo iptables -L -n
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy DROP)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (0 references)
target prot opt source destination
ACCEPT tcp -- 0.0.0.0/0 192.168.100.2 tcp dpt:80
ACCEPT tcp -- 192.168.100.3 192.168.100.2 tcp dpt:80
ACCEPT tcp -- 192.168.100.2 192.168.100.3 tcp spt:80
ACCEPT tcp -- 192.168.100.3 192.168.100.2 tcp dpt:443
ACCEPT tcp -- 192.168.100.2 192.168.100.3 tcp spt:443
ACCEPT tcp -- 192.168.100.3 192.168.100.2 tcp dpt:22
ACCEPT tcp -- 192.168.100.2 192.168.100.3 tcp spt:22
进入test容器内部:
sudo docker exec -it test bash
root@00585b9efea8:/# cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
192.168.100.2 web 2cec3235f5fa
192.168.100.3 00585b9efea8
root@00585b9efea8:/# ping web
PING web (192.168.100.2): 56 data bytes
^C--- web ping statistics ---
12 packets transmitted, 0 packets received, 100% packet loss
root@00585b9efea8:/# ping 192.168.100.2
PING 192.168.100.2 (192.168.100.2): 56 data bytes
^C--- 192.168.100.2 ping statistics ---
12 packets transmitted, 0 packets received, 100% packet loss
root@00585b9efea8:/# curl web
^C
root@00585b9efea8:/# curl http://192.168.100.2:80
^C
指定容器相连的三个条件:--icc=fasle --iptables=true --link上面都已经满足了。为了防止意外,再第一步之前还执行了iptables -F清除
问题出在哪里呢?或者说可能出现在哪里呢