This post was originally released on 14th of January 2017.
DHCP is great but there usually comes a time when you need to make sure that your IP stays always the same. This post outlines the steps you can take to setup a static IP on Fedora, Centos and Oracle Linux.
Before you begin do these two steps in terminal:
yum -y install net-tools
After ip a, you will see something like this:
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether dc:4a:3e:43:dc:1c brd ff:ff:ff:ff:ff:ff
inet 220.127.116.11/24 brd 18.104.22.168 scope global dynamic eno1
valid_lft 68056sec preferred_lft 68056sec
inet6 fe80::593e:cf18:df4e:f815/64 scope link
valid_lft forever preferred_lft forever
Take note of your network adapter name(eno1).
Get your current IP (inet line)
Get your gateway details by typing route -n
It will show something like:
Change network adapter settings to static.
Now check your /etc/resolv.conf and verify that it has correct search lines and nameservers. Usually it should be something like this:
nameserver 22.214.171.124 -> Notice that this here is the same as our gateway.
nameserver 126.96.36.199 -> Google DNS1
nameserver 188.8.131.52 -> Google DNS2
Last steps are all about stopping NetworkManager and restarting the network:
systemctl stop NetworkManager
chkconfig NetworkManager off
service network restart
Your are done. Now your network configuration should have a static IP.
Test connectivity with ping: ping google.fi