[Lxc-users] lxc container not visible from host, but host visible inside container

[Li, Zeyang]

Hi,

I ran into a problem where I cannot ssh to containers but I could do
the reverse and ssh to the host from inside containers.
I'm doing this on ubuntu 12.04 and followed official tutorial. It
looks like it should be rather painless and I should be able to access
container through hostname or ip after booting it.

Here is my container network setup, hostname "budda1"

ubuntu at budda1:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3e:8b:af:ba
          inet addr:10.0.3.195  Bcast:10.0.3.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe8b:afba/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:44 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6963 (6.9 KB)  TX bytes:3248 (3.2 KB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lxcbr0    Link encap:Ethernet  HWaddr 1a:cf:ac:d0:2e:b0
          inet addr:10.0.3.1  Bcast:10.0.3.255  Mask:255.255.255.0
          inet6 addr: fe80::18cf:acff:fed0:2eb0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:554 (554.0 B)


Here is my host network setup.

eth1      Link encap:Ethernet  HWaddr 00:0b:e0:f0:00:ed
          inet addr:192.168.0.187  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20b:e0ff:fef0:ed/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3774669 errors:0 dropped:0 overruns:0 frame:0
          TX packets:19871338 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:325045419 (325.0 MB)  TX bytes:28140974879 (28.1 GB)
          Interrupt:42 Base address:0xc000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:9002 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9002 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:895944 (895.9 KB)  TX bytes:895944 (895.9 KB)

lxcbr0    Link encap:Ethernet  HWaddr 42:41:2f:06:48:54
          inet addr:10.0.3.1  Bcast:10.0.3.255  Mask:255.255.255.0
          inet6 addr: fe80::4041:2fff:fe06:4854/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:967 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4742 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:265702 (265.7 KB)  TX bytes:362339 (362.3 KB)

vethDRRJNv Link encap:Ethernet  HWaddr ea:a8:65:4e:bc:af
          inet6 addr: fe80::e8a8:65ff:fe4e:bcaf/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:25 errors:0 dropped:0 overruns:0 frame:0
          TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3506 (3.5 KB)  TX bytes:8848 (8.8 KB)

vethNoOhWO Link encap:Ethernet  HWaddr 42:41:2f:06:48:54
          inet6 addr: fe80::4041:2fff:fe06:4854/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:169 errors:0 dropped:0 overruns:0 frame:0
          TX packets:817 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:29672 (29.6 KB)  TX bytes:91511 (91.5 KB)

vethmo7HuT Link encap:Ethernet  HWaddr ca:34:1b:41:93:74
          inet6 addr: fe80::c834:1bff:fe41:9374/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:228 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1114 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:45992 (45.9 KB)  TX bytes:110286 (110.2 KB)

virbr0    Link encap:Ethernet  HWaddr 8e:24:41:13:de:9a
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0

Thanks,
Zeyang