nova service cannot be started if 0640 root:nova /etc/nova/nova.conf if set 0644 root:nova ,there is no problem. mysql db username:nova OS: ubuntu 11.04 openstack version:2011.3 (2011.3-nova-milestone-tarball:tarmac-20110922115702-k9nkvxqzhj130av2) -- 非淡薄无以明志，非宁静无以致远 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20110923/60ebb936/attachment.html>