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Will a weak cloud controller node slow down the compute node?

asked 2013-12-19 11:06:41 -0500

Leonard gravatar image

updated 2014-01-22 15:12:53 -0500

Evgeny gravatar image

My understanding, please correct me if I'm wrong, is that the cloud controller basically hosts Openstack functionality and VPS images to build off of. So, for the VPS end user, a weak cloud controller would only result in slower installation of VPSes from those images, and maybe a slower Havana control panel experience? For example, is it advisable to use this setup:

Cloud: e3 1230v3 2x2tb 7.2krpm

Compute: l55369 (12 cores) 4x512gb SSD

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answered 2013-12-19 11:30:19 -0500

larsks gravatar image

You are correct that a slow "controller" would generally impact the user experience through slower performance of the web GUI and potentially slower delivery of images to compute nodes. It would not impact the performance of instances once they have booted no your compute nodes.

It's not really possible for us to comment on your selection of hardware because we don't know what your requirements are in terms of number of instances, size of instances, and so forth. I will say that system memory is often the resource in greatest demand, although this is not necessarily true in your environment.

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How much disk space does the cloud controller node take? By that, I mean all services other than compute. that'd help me gauge what kind of disks I need to use

Leonard gravatar imageLeonard ( 2013-12-19 12:35:54 -0500 )edit

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Asked: 2013-12-19 11:06:41 -0500

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Last updated: Dec 19 '13