Hi, You can enable debug mode to "True" in nova.conf and check log message in file compute.log, you will find some hint to continue investigation. hello i m new to openstack so need some help wen ever i try to launch an instance it gives me the error "*Error: * Failed to launch instance "nova_testing": Please try again later [Error: No valid host was found. ]. " i m even unable to find the log files. can any body help me on this thanks in advance _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack at lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140823/18328e83/attachment.html>