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For resource management, how to scale Hosts Online ex: scale cpu, ram , disks , ...etc.

asked 2015-08-31 16:46:40 -0500

Eissa gravatar image

is it possible to scale VMs while it's running ex: scale CPU, RAM, Disk, ... Thanks

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answered 2015-09-01 09:44:36 -0500

sgordon gravatar image

By scale it sounds like you mean adding/removing CPUS, RAM, Disk, Network, etc. As it stands the only two of these resources that can easily be modified while the instance is running are disk and network (via Cinder volume attachment and Neutron network attachment respectively).

There is a proposal to implement a "hot" resize function in Nova that would take advantage of the fact that modern hypervisors (and their guests) allowing for adding/removing CPU and RAM while the guest is running but this remains unimplemented.

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answered 2015-09-01 01:25:21 -0500

kumar lakshman kumar gravatar image
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Asked: 2015-08-31 16:46:40 -0500

Seen: 77 times

Last updated: Sep 01 '15