"Heat just forwards what Nova sends it, it seems it should be fixed in Nova instead."
So I change the prohect to be nova. ** Project changed: heat => nova ** Changed in: nova Status: Invalid => New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1301830 Title: Add more detailed error log for why No valid host was found Status in OpenStack Compute (Nova): New Bug description: I tried to use heat template to initiate a few VMs, but failed, error log is as below-- 2014-04-03 09:38:17.855 64268 TRACE heat.engine.resource Error: Creation of server cSDMstack-fe-0-0-2-skqk5g44somv failed: No valid host was found. (500) This is not very efficient to debug for why no valid host was found. I tried several times to debug and then found that the resource is not enough for initiating this VM, then I adjusted the flavor used by the VM, then the heat initiation succeeded. Hope the error log specifies more details so that user can debug and then fix the issue. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1301830/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp