Centos
How to configure static ip address on CentOS 7
In this small tutorial i will explain how to configure static ip address on CentOS 7 minimal.
First, need to edit the set up for the ethernet. Let’s start with editing “/etc/sysconfig/network-scripts/ifcfg-enp0s3″ file:
vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
HWADDR=08:00:27:6C:FF:91 TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=no IPADDR=192.168.0.88 IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_FAILURE_FATAL=no NAME=enp0s3 UUID=ea68db6e-461e-427d-b9a8-bfcf6e1a4fc6 ONBOOT=yes
Save and exit.
vi /etc/sysconfig/network
And add following line:
NETWORKING=yes HOSTNAME=centos7 GATEWAY=10.1.1.253
Configure DNS Server
vi /etc/resolv.conf
add following line:
nameserver 8.8.8.8 nameserver 8.8.4.4
Now restart your network or rebooting system
/etc/init.d/network restart
Check your network:
ip addr
1: lo:mtu 65536 qdisc noqueue state UNKNOWN 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: enp0s3: mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 08:00:27:6c:ff:91 brd ff:ff:ff:ff:ff:ff inet 192.168.0.88/24 brd 192.168.0.255 scope global enp0s3 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe6c:ff91/64 scope link valid_lft forever preferred_lft forever
That is all.
I think you did not mention the subnet mask in the ifcfg file.
Yes, where can I configure the netmask?
PREFIX=24
Thank you so much! I was going through so many articles on how to do this and your did the trick. Excellent!!
Hi,
I have set the network configuration , All correct , But when i run ifconfig -a i get wrong Gateway IP address. How can i fix or where can i chagne or correct these settings. From the interface and /etc/sysconfig/network-scripts/ifcfg-em1 all seesm to br correctly set.
Try this
$ nmtui edit your_interface
Thanks nmtui helped me to change the hostname, But i still face issue with Default Gateway. i cannot ping to ouside network.
yes great job !! now tell me how to revert it. 🙂
facing issues though followed the step accordingly,
unable to ping my gateway even.
does the order of the sequence is to be followed strictly as mentioned ??