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Why do compute nodes need to be in the same subnet for migration to work?

asked 2013-06-12 06:53:40 -0600

kpostrup gravatar image

updated 2013-06-12 15:39:16 -0600

smaffulli gravatar image

Why do compute nodes need to be in the same IP subnet for live or block migration to work?

As transport is TCP/IP I can't see why it cannot be routed, can anyone shed some light on this for me?

Thank you.

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Hi, Where is this information from? I agree - in theory it could be possible.

fifieldt gravatar imagefifieldt ( 2013-06-30 18:54:41 -0600 )edit

If you have a floating ip associated with your VM, then i dont think you would require the compute nodes to be in the same subnet, need to test this though.

kanaderohan gravatar imagekanaderohan ( 2013-10-28 08:20:47 -0600 )edit

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answered 2013-07-01 02:59:18 -0600

kpostrup gravatar image

updated 2013-07-01 02:59:25 -0600

I believe this may be due to the fact that the IP of the VM needs to be the same during migration, otherwise it wouldn't be "live" in a network reachability sense.

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Asked: 2013-06-12 06:53:40 -0600

Seen: 137 times

Last updated: Jun 12 '13