[AMBARI-24320] SET_KEYTABS is preformed twice per host during Kerberos operations

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.7.1
• Component/s: ambari-server
• Labels: pull-request-available
• Assignee: Sandor Molnar
• Reporter: Sandor Molnar
• Created: 20/Jul/18 08:28
• Updated: 25/Jul/18 06:06
• Resolved: 25/Jul/18 06:06

Description

STR

• Enable Kerberos and check the DB after the 'Test Kerberos' step, or
• Regenerate keytabs on a secure cluster with the option 'Only regenerate keytabs for missing hosts and components' enabled (this is important, otherwise the issue is not reproducible)

Result:

SELECT hrc.task_id, hrc.request_id, hrc.host_id, hrc.stage_id, st.request_context, hrc.status, hrc.role, hrc.role_command, hrc.custom_command_name FROM host_role_command hrc, stage st WHERE hrc.stage_id = st.stage_id AND hrc.request_id = st.request_id AND hrc.custom_command_name = 'SET_KEYTAB' ORDER BY request_id, host_id, stage_id;

task_id	request_id	host_id	stage_id	request_context	status	role	role_command	custom_command_name
63	17	1	1	Checking keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
68	17	1	4	Distribute Keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
64	17	2	1	Checking keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
69	17	2	4	Distribute Keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
65	17	3	1	Checking keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
70	17	3	4	Distribute Keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
83	19	1	1	Checking keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
88	19	1	4	Distribute Keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
84	19	2	1	Checking keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
89	19	2	4	Distribute Keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
85	19	3	1	Checking keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB
90	19	3	4	Distribute Keytabs	COMPLETED	KERBEROS_CLIENT	CUSTOM_COMMAND	SET_KEYTAB

Expected result:
only one SET_KEYTAB command should be recorded

Issue Links

• links to: GitHub Pull Request #1817
• links to: GitHub Pull Request #1834