Comment 2 for bug 1454255

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Pavel Kholkin (pkholkin) wrote : Re: Nova scheduler and conductor failed to start on one of the node with db error "DBConnectionError: (OperationalError) (1047, 'Unknown command') None None"

I don't think it is a nova problem. According to logs, mysql was down at that time:
http://paste.openstack.org/show/227140/

Please look at the file 10.109.20.2/var/log/docker-logs/remote/node-1.test.domain.local/haproxy.log in attached fuel-snapshot.
Thanks!