keystone does not support postgres database

[koolhead17]

I am using ubuntu 12.04 and tried to use postgres as my databases back end but keystone-manage db_sync fails with error below

keystone-manage db_sync
Traceback (most recent call last):
  File "/usr/bin/keystone-manage", line 28, in <module>
    cli.main(argv=sys.argv, config_files=config_files)
  File "/usr/lib/python2.7/dist-packages/keystone/cli.py", line 148, in main
    return run(cmd, (args[:1] + args[2:]))
  File "/usr/lib/python2.7/dist-packages/keystone/cli.py", line 134, in run
    return CMDS[cmd](argv=args).run()
  File "/usr/lib/python2.7/dist-packages/keystone/cli.py", line 36, in run
    return self.main()
  File "/usr/lib/python2.7/dist-packages/keystone/cli.py", line 57, in main
    driver.db_sync()
  File "/usr/lib/python2.7/dist-packages/keystone/identity/backends/sql.py", line 135, in db_sync
    migration.db_sync()
  File "/usr/lib/python2.7/dist-packages/keystone/common/sql/migration.py", line 50, in db_sync
    current_version = db_version()
  File "/usr/lib/python2.7/dist-packages/keystone/common/sql/migration.py", line 64, in db_version
    CONF.sql.connection, repo_path)
  File "<string>", line 2, in db_version
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/util/__init__.py", line 155, in with_engine
    engine = construct_engine(url, **kw)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/util/__init__.py", line 116, in construct_engine
    raise ValueError("you need to pass either an existing engine or a database uri")
ValueError: you need to pass either an existing engine or a database uri

this is how my keystone.conf looks like http://paste.ubuntu.com/989906/

[Alan Pevec (apevec)]

> this is how my keystone.conf looks like http://paste.ubuntu.com/989906/

sql_connection = postgresql://keystone:keystone@192.168.1.3/keystone

This should be connection = ...
https://github.com/openstack/keystone/blob/master/etc/keystone.conf.sample#L53