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nova scheduler not work when create VMs using Heat ?

asked 2018-08-29 01:11:56 -0500

Carrot gravatar image

Env. Newton, Ubuntu 16.04 based

I created many VMs using Heat template , but some compute nodes's resource were exceed the RAM ! Besides nova-scheduler running and cpu_ratio & ram_ratio value is 1.5 / 1.0. I think nova scheduler not work when create VMs using Heat. Is that true ?

If true, how to use nova scheduler with Heat ?

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answered 2018-08-29 01:33:51 -0500

Bernd Bausch gravatar image

Heat issues Nova API requests, just like the CLI or the GUI. It can’t switch the scheduler on or off. It can influence scheduling decisions in exactly the same way as the CLI or the GUI. If you instances are too large or too many, or your overcommit is too small, you get scheduling errors, Heat or not Heat.

Do you have a different result when you launch precisely the same instances manually?

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Asked: 2018-08-29 01:11:56 -0500

Seen: 41 times

Last updated: Aug 29 '18

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