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Is Scaling Up possible without losing session data?

asked 2014-08-26 09:26:21 -0600

my_openstack_username gravatar image

If you change flavor of an instance (using 'nova resize), that has active processes on it the processes are lost after the operation. I want to know if there is a way to change the flavor and have the processes remain after the operation is complete?

Additionally, the instance appears to be unreachable through SSH during the operation. Is there a way to change flavor with no or minimal downtime?

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answered 2014-08-26 09:55:38 -0600

SamYaple gravatar image

The resize operation is actually stopping and recreating the instance. If you have multiple nodes (and you do not have allow_resize_to_same_host=True in the conf), the instance will exist on a different node.

The is no way to change the flavor without stopping the instance and getting some down time.

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Asked: 2014-08-26 09:26:21 -0600

Seen: 345 times

Last updated: Aug 26 '14