If PAM is configured properly, a ticket is created automatically when you log in, and you need not do anything special to obtain a ticket. However, you might need to create a ticket if your ticket expires. Also, you might need to use a different principal besides your default principal, for example, if you use ssh -l to log in to a system as someone else.
To create a ticket, use the kinit command.
The kinit command prompts you for your password. For the full syntax of the kinit command, see the kinit(1) man page.Example 6-1 Creating a Kerberos Ticket
This example shows a user, kdoe, creating a ticket on her own system.
% kinit Password for kdoe@CORP.EXAMPLE.COM: xxxxxxxx
In this example, the user kdoe creates a ticket that is valid for three hours with the –l option.
% kinit -l 3h kdoe@EXAMPLE.ORG Password for kdoe@EXAMPLE.ORG: xxxxxxxx