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Is it possible to change the hypervisor settings in devstack?

asked 2014-03-04 09:56:18 -0500

moee gravatar image

updated 2014-04-09 02:54:12 -0500

smaffulli gravatar image

I installed devstack on a machine with 4 cores and 8 GB RAM. Everything worked fined, except that I can only launch nano instances. Launching larger instances fails with a "NoValidHost" error message. As I understand it this message occurs because there no hypervisors with enough resources are available.

If I open the administration panel in horizon and click on Admin > Hypervisors it shows me

  • CPU Usage: Used 1 of 4
  • Memory Usage: Used 1GB of 7GB

The hypervisor type is QEMU. My question is: Why are not all available cores utilized? Is it possible to change these settings so that I can launch larger instances?

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Are you trying this with 32 bit system on vm or vm is 32 bit ?

dheeru gravatar imagedheeru ( 2014-03-04 11:37:11 -0500 )edit

@dheeru devstack runs on a physical host with a 64 bit architecture, the image i want to launch is 32 bit

moee gravatar imagemoee ( 2014-03-04 11:52:48 -0500 )edit

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answered 2014-04-09 01:48:31 -0500

If you need to change the hypervisor to KVM, add this line to localrc file;


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Asked: 2014-03-04 09:56:18 -0500

Seen: 1,420 times

Last updated: Apr 09 '14