There is a denial connecting to mysqld:

type=AVC msg=audit(1339706457.635:1431): avc:  denied  { name_connect } for  pid=31822 comm="glance-registry" dest=3306 scontext=system_u:system_r:glance_registry_t:s0 tcontext=system_u:object_r:mysqld_port_t:s0 tclass=tcp_socket

Note mysql is on localhost.
Apparently this was addressed in selinux-policy-targeted-3.10.0-120.fc17.noarch,
but that only seemed to consider the unix socket connection, as it added:

  mysql_stream_connect(glance_registry_t)

It seems from the above that this is also needed?

  allow glance_registry_t mysqld_port_t:tcp_socket name_connect;