Static IP addresses can be a great way to ensure your devices always have the same IP address. This is especially helpful if you're running any type of server, such as web hosting, and need to keep your servers available on the same address no matter what. Luckily, static IPv4 configuration on CentOS 8 is easy!
Open Terminal
To get started with setting up your static IP address, open up your terminal
Edit network interface
Edit the network interface configuration file at:
/etc/sysconfig/network-scripts/ifcfg-eth0
Make sure to replace 'eth0' with whatever your actual network interface is called; you can find this by typing in terminal:
ip addr show
Once you've opened that file for editing, add these lines to the configuration:
BOOTPROTO=static
IPADDR=XXX.XXX.X.X (replace with your desired IP address)
NETMASK=255.255.255.0
GATEWAY=XXX.XXX.X.X (replace with your gateway IP address)
DNS1=8.8.8.8
DNS2=4.4 .4 .4 (optional, you can use any other DNS server of your choosing)
Save & Restart
Save and close the file, then restart the network services by typing:
systemctl restart network
Now, if you type in:
ip addr show
You should see that your static IP address has been successfully assigned to your device.
And that's it - congratulations, you've just set up a static IPv4 configuration on CentOS 8! Now you can rest assured knowing that your server is always available on the same address no matter what. Enjoy!
