I am playing with docker. Now I want to assign IP to container from the same IPs range as my host OS has.
My Host has IP address 192.168.1.50 (192.168.1.0/24 network). And I want to use for example 192.168.1.51 from the same network for Docker container.
For this I`ve installed bridge-utils (I am using Ubuntu 14.04) and reconfigured my interfaces:
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address 192.168.1.50
network 192.168.1.0
netmask 255.255.255.0
broadcast 192.168.0.255
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4
bridge_ports eth0
bridge_stp off
bridge_fd 0
bridge_maxwait 0
Now I have such configuration:
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
link/ether 08:00:27:a5:22:5d brd ff:ff:ff:ff:ff:ff
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 56:84:7a:fe:97:99 brd ff:ff:ff:ff:ff:ff
inet 172.17.42.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::5484:7aff:fefe:9799/64 scope link
valid_lft forever preferred_lft forever
4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 08:00:27:a5:22:5d brd ff:ff:ff:ff:ff:ff
inet 192.168.1.50/24 brd 192.168.0.255 scope global br0
valid_lft forever preferred_lft forever
inet6 fe80::a00:27ff:fea5:225d/64 scope link
valid_lft forever preferred_lft forever
How to create every new dockers with IPs from the same IP-range 192.168.1.0/24 as Host machine? How to specify for every new docker container to use br0 interface?
Docker can't do that. It can set IPs only by own decision.