To set up a CentOS or Red Hat Linux DHCP client, you will need to install the dhclient package and configure the network interface to use DHCP.
DHCP (Dynamic Host Configuration Protocol) is a protocol that allows a server to automatically assign IP addresses, default gateways, and other network configuration settings to client devices on a network.
To install the dhclient package, use the yum command:
sudo yum install dhclient
Next, configure the network interface to use DHCP by editing the /etc/sysconfig/network-scripts/ifcfg-interface file and setting the BOOTPROTO option to dhcp. For example, to configure the eth0 interface to use DHCP, you can edit the /etc/sysconfig/network-scripts/ifcfg-eth0 file and set the BOOTPROTO option to dhcp:
BOOTPROTO=dhcp
Save the file and restart the network service to apply the changes:
sudo systemctl restart network
To obtain an IP address and other network settings using DHCP, you can use the dhclient command with the -v option to start a DHCP client and request an IP address:
sudo dhclient -v eth0