How to configure a static IP address on Linux
IP addresses on Linux systems are often assigned automatically by Dynamic Host Configuration Protocol (DHCP) servers. These are referred to as "dynamic addresses" and may change any time the system is rebooted. When a system is a server or will be remotely administered, however, it is generally more convenient for these systems to have static addresses, providing stable and consistent connections with users and applications.
Fortunately, the steps required to change a Linux system's IP address from dynamic to static are fairly easy, though they will be a little different depending on the distribution you are using. In this post, we'll look at how this task is managed on both Red Hat (RHEL) and Ubuntu systems.