1. Navigate to “vi /etc/hosts”

Add the below line  to the file, first the IP address followed by the ESX host name as shown below.

192.168.145.141 ESX002

2. Navigate to  “vi /etc/sysconfig/network” and update ESX host name in the second line of the file as shown below.

NETWORKING=yes

HOSTNAME=ESX002

IPV6_AUTOCONF=no

NETWORKING_IPV6=no

You would need to restart the network service to implement the change, by issuing the below command.

service network restart