How to modify the IP for a docker container? - docker

Question

I'm new to docker. And currently faced one problem --
I've downloaded a sles11sp4 image from dockerhub -- https://hub.docker.com/r/darksheer/sles11sp4
And when I run it -- docker run -i -t darksheer/sles11sp4 /bin/bash -- I found there's a IP and MAC already set on it --
docker:~ # docker run -i -t darksheer/sles11sp4 /bin/bash
145636fbb570:/ # ifconfig
eth0 Link encap:Ethernet HWaddr 02:42:AC:11:00:02
inet addr:172.17.0.2 Bcast:172.17.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8 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:696 (696.0 b) TX bytes:0 (0.0 b)
Since this IP is not same LAN with the host( 192.168.95.66 ), I want to modify it to another IP( 192.168.95.75) to make this container visible on the network. So I tried to run it with "--ip xxxx" parameters , but failed --
docker:~ # docker run -i -t --ip 192.168.95.67 darksheer/sles11sp4 /bin/bash
29fda722cf70:/ # ifconfig
eth0 Link encap:Ethernet HWaddr 02:42:AC:11:00:02
inet addr:172.17.0.2 Bcast:172.17.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8 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:696 (696.0 b) TX bytes:0 (0.0 b)
Then I found there's no network card script on this image, so I can't modify it inside container --
29fda722cf70:/ # cd /etc/sysconfig/network/
29fda722cf70:/etc/sysconfig/network # ls
if-down.d if-up.d providers scripts
29fda722cf70:/etc/sysconfig/network # cd if-up.d/
29fda722cf70:/etc/sysconfig/network/if-up.d # ls
29fda722cf70:/etc/sysconfig/network/if-up.d # cd ..
29fda722cf70:/etc/sysconfig/network # cd scripts/
29fda722cf70:/etc/sysconfig/network/scripts # ls
29fda722cf70:/etc/sysconfig/network/scripts # cd ..
29fda722cf70:/etc/sysconfig/network # cd providers/
29fda722cf70:/etc/sysconfig/network/providers # ls
29fda722cf70://etc/sysconfig/network/providers # cd ../scripts/
29fda722cf70:/etc/sysconfig/network/scripts # ls
29fda722cf70:/etc/sysconfig/network/scripts #
29fda722cf70:/etc # cd /etc/udev/rules.d/
29fda722cf70:/etc/udev/rules.d # ls
Then I confused -- how to set a new IP to a container like this? Please kind help. Thanks
Regards
Eisen

Answer 1

I found the answer --
docker network create --subnet=192.168.97.0/24 net1
docker run --net net1 --ip 192.168.97.67 -i -t darksheer/sles11sp4 /bin/bash
6ced18aaeeb6:/ # ifconfig
eth0 Link encap:Ethernet HWaddr 02:42:C0:A8:61:43
inet addr:192.168.97.67 Bcast:192.168.97.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1