Is there any way that I can have single point of control to perform cluster activities such as rolling restart without logging into each specific node such and Management, API and restarting each one manually.
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This 'single point of control' would be the management server:
Run 'ndb_mgm' on the management server, or 'ndb_mgm --ndb-mgmd-host=' from another host.
To restart the management server: ndb_mgm> 1 restart
To restart the first node: ndb_mgm> 2 restart
To restart the second node: ndb_mgm> 3 restart
... and so on.
Note that i am assuming node#1 as the management server node, and data nodes starting with number 2. If you
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