Examine Management Instances (mgmtExamine)

The mgmtExamine command examines the management instances and recommends any necessary corrective action. Run the suggested commands.

ttGridAdmin mgmtExamine

Examples

This example shows output when both management instances are up. Aside from the opening note that they are both up, the output is the same as for the mgmtStatus command. See Display Status of Management Instances (mgmtStatus) for descriptions of the columns. (For brevity, the Message column, which had no entries, is not shown in this example.)

% ttGridAdmin mgmtExamine
Both active and standby management instances are up. No action required.
 
Host        Instance  Reachable RepRole(Self) Role(Self) Seq RepAgent RepActive
----------- --------- --------- ------------- ---------- --- -------- ---------
mysys1host  gridmgmt1 Yes       Active        Active     554 Up       Yes
mysys2host  gridmgmt1 Yes       Standby       Standby    554 Up       No

This example shows output when the active management instance is down, including recommended actions and commands to run:

% ttGridAdmin mgmtExamine
Standby management instance is up, but active is down
Promote the standby to active

Host        Instance  Reachable RepRole(Self) Role(Self) Seq RepAgent RepActive Message
----------- --------- --------- ------------- ---------- --- -------- --------- -------------------
----------------
mysys1host  gridmgmt1 No        Unknown       Unknown        Down     No        Management database 
is not available
mysys2host  gridmgmt1 Yes       Standby       Standby    557 Up       No            
Recommended commands:
ssh -o StrictHostKeyChecking=yes -o PasswordAuthentication=no -x host1.example.com 
/sw/tten/gridsetup/ttinstances/gridmgmt1/bin/ttenv ttGridAdmin mgmtActiveSwitch

Notes

One use case is if both management instances fail, and you are not certain which one was the active. Run this command to examine them both and determine which one is "current" or "most recent", then start that one as the active management instance.