[HADOOP-8381] Substitute _HOST with hostname for HTTP principals

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.1
• Component/s: security
• Hadoop Flags: Reviewed
• Assignee: Benoy Antony
• Reporter: Benoy Antony
• Created: 10/May/12 00:46
• Updated: 05/Jun/12 09:07
• Resolved: 05/Jun/12 03:25

Description

SPNEGO based Web Authentication uses HTTP/fqdn@REALM as the kerberos principal for each host.
Since it is difficult to modify the config for each host, a substitution feature where _HOST gets replaced by fqdn is implemented.
The task is to provide similar feature for the kerberos principals used for SPNEGO principals