I installed Docker on Centos 7. Below is the output of ifconfig command
# ifconfig
docker0: flags=4099 mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
ether 02:42:ea:cd:a1:19 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33: flags=4163 mtu 1500
inet 192.168.149.5 netmask 255.255.255.0 broadcast 192.168.149.255
inet6 fe80::c494:6514:b641:e046 prefixlen 64 scopeid 0x20
ether 00:0c:29:57:00:09 txqueuelen 1000 (Ethernet)
RX packets 42800 bytes 26241065 (25.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 31687 bytes 4228571 (4.0 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73 mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1 (Local Loopback)
RX packets 302 bytes 29477 (28.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 302 bytes 29477 (28.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099 mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:ce:2f:27 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
I tried to change IP address of docker0 172.17.0.1 to 192.168.149.5, the IP address of ens33. I searched many ref site, but I can't make it. How can I set the ip address of docker0 on CentOS 7?
First, the position of docker configuration file depends on the docker version. If some newer docker you used, its configuration will be in /etc/docker/daemon.json. Put the following code into the configuration file and restart the docker daemon, the IP of docker bridge will be updated.
Hope helps.
Control and configure Docker with systemd
Daemon configuration file
This is my process to change ip address of docker container.
The problem is there is no such a file (/etc/default/docker). And i generated docker file, but it does not work.