Step-by-Step Instructions:

For CentOS 7 Servers:

CentOS 7 typically uses the traditional network-scripts system.

1. Access the server via SSH.
2. Open your network interface configuration file:

sudo nano /etc/sysconfig/network-scripts/ifcfg-eth0

(If your interface is named differently, adjust accordingly — check with ip a.)

1. Update or add the following lines:

IPADDR=YourNewIP

GATEWAY=YourNewGateway

Example:

IPADDR=104.160.9.50

GATEWAY=104.160.9.1

1. Save and exit the file:

• Press Ctrl+X, then Y, then Enter

1. Restart the network service:

sudo systemctl restart network

For CentOS 8 and CentOS Stream Servers:

CentOS 8 may use either network-scripts or NetworkManager (nmcli).

If network-scripts exist (common on hosting setups):

• Follow the CentOS 7 steps above (same commands).

If your server uses NetworkManager, follow these steps:

1. Access the server via SSH.
2. List the active connections:

nmcli connection show

1. Edit your network connection:

nmcli connection edit YourConnectionName

1. Set the new static IP:

set ipv4.addresses 104.160.9.50/24

set ipv4.gateway 104.160.9.1

set ipv4.dns 8.8.8.8,8.8.4.4

set ipv4.method manual

save

quit

1. Restart networking:

sudo systemctl restart NetworkManager

Important Reminders:

• Ensure you enter IP addresses and gateways correctly to avoid disconnection.
• Always keep a console (IPMI/KVM) access ready if available, in case network access is lost.
• If unsure, contact your hosting support for confirmation before applying changes.

Need Assistance?

If you face any issues while updating the IP, feel free to open a support ticket via your client portal — we are here to help!

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