How to configure a static IP address on RHEL 8

To configure a static IP address on Red Hat Enterprise Linux (RHEL) 8, you will need to perform the following steps:

1. Open the network configuration file using your preferred text editor. For example:

sudo vi /etc/sysconfig/network-scripts/ifcfg-<interface>

2. Find the following lines in the configuration file and edit them to reflect your desired static IP address, netmask, and default gateway:

IPADDR=<static IP address>
NETMASK=<netmask>
GATEWAY=<default gateway>

3. Save the changes to the configuration file and exit the text editor.

4. Restart the network service to apply the changes:

sudo systemctl restart network

5. Verify that the static IP address has been correctly configured by using the ip command:

ip addr show <interface>

Alternatively, you can use the nmcli tool to configure a static IP address. To do so, follow these steps:

1. Run the nmcli command with the connection and modify options, and specify the interface and the new IP address:

nmcli connection modify <interface> ipv4.addresses <static IP address>/<netmask>

2. Set the default gateway:

nmcli connection modify <interface> ipv4.gateway <default gateway>

3. Save the changes:

nmcli connection modify <interface> ipv4.method manual

4. Restart the network service to apply the changes:

sudo systemctl restart network

5. Verify that the static IP address has been correctly configured by using the ip command:

ip addr show <interface>