when I add a new compute node to OpenStack-ansible everything seems ok but any instance can't create on it
NoValidHost: No valid host was found. There are not enough hosts available. : NoValidHost_Remote: No valid host was found. There are not enough hosts available. 2019-09-02 07:33:22.273 192 WARNING nova.scheduler.utils [req-f85f9433-9585-407d-902a-108e90d8aa7a 4831a71d258444ffb7a51491f45dfe05 4e537668e9eb44639c1075f6013e367d - default default] [instance: 56160be3-4f0c-48b2-bd24-0c2ac2331372] Setting instance to ERROR state.: NoValidHost_Remote: No valid host was found. There are not enough hosts available.
I have checked my Iaas but unfortunately, my compoute server was down so I try to install it again then my problem is fixed it