How to Add an Additional IP to a Server

Last updated on February 1st, 2025 at 09:33 am

To add an additional IP to a server, follow these steps:

1. Login to your Server via SSH Terminal
2. Make sure you are logged in as the root user
3. Run the following command: cd/etc/sysconfig/network-scripts/
4. View current Network Adapters by running ls ifcfg*
5. Note that the servers’ primary IP displays as “ifcfg-eth0” and “ifcfg-lo”
6. Additional IPs on the server displays as “ifcfg-eth0:0”, “ifcfg-eth0:1”,
7. To add an additional IP please run the command cp ifcfg-eth0 ifcfg-eth0:0
8. Edit the ifcfg-eth0:0 configuration file by running vi ifcfg-eth0:0
9. On the configuration file edit to change the “IPADDR” value to the new IP address and the “DEVICE” value to eth0:0
10. Save the changes and exit the editor
11. For changes to take effect and the IP to be recognized within the network run the following command
12. /etc/init.d/network restart

 

Adding a Second and a Subsquent Additional Ip

– Just repeat the Processs

1. Run the command cp ifcfg-eth0 ifcfg-eth0:0
2. To open and edit the configuration file
3. Run the command vi ifcfg-eth0:0
4. On the configuration file edit to change the “IPADDR” value to the new IP address and the “DEVICE” value to eth0:0
5. Save the changes and exit the editor
6. For changes to take effect and the IP to be recognized within the network run the following command
7. /etc/init.d/network restart

Well done You Have now added additional IP to the Server