Error log:

Installing new version of config file /etc/init/glance-api.conf ...
Installing new version of config file /etc/init/glance-registry.conf ...
Traceback (most recent call last):
  File "/usr/bin/glance-manage", line 144, in <module>
    main()
  File "/usr/bin/glance-manage", line 140, in main
    dispatch_cmd(options, args)
  File "/usr/bin/glance-manage", line 112, in dispatch_cmd
    cmd_func(options, args)
  File "/usr/bin/glance-manage", line 100, in do_db_sync
    glance.registry.db.migration.db_sync(options, version=db_version)
  File "/usr/lib/python2.7/dist-packages/glance/registry/db/migration.py", line 123, in db_sync
    upgrade(options, version=version)
  File "/usr/lib/python2.7/dist-packages/glance/registry/db/migration.py", line 66, in upgrade
    return versioning_api.upgrade(sql_connection, repo_path, version)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/api.py", line 186, in upgrade
    return _migrate(url, repository, version, upgrade=True, err=err, **opts)
  File "<string>", line 2, in _migrate
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/util/__init__.py", line 159, in with_engine
    return f(*a, **kw)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/api.py", line 365, in _migrate
    schema.runchange(ver, change, changeset.step)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/schema.py", line 91, in runchange
    change.run(self.engine, step)
  File "/usr/lib/python2.7/dist-packages/migrate/versioning/script/py.py", line 145, in run
    script_func(engine)
  File "/usr/lib/python2.7/dist-packages/glance/registry/db/migrate_repo/versions/001_add_images_table.py", line 49, in upgrade
    create_tables(tables)
  File "/usr/lib/python2.7/dist-packages/glance/registry/db/migrate_repo/schema.py", line 97, in create_tables
    table.create()
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/schema.py", line 477, in create
    bind.create(self, checkfirst=checkfirst)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1698, in create
    connection=connection, **kwargs)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1740, in _run_visitor
    **kwargs).traverse_single(element)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/sql/visitors.py", line 86, in traverse_single
    return meth(obj, **kw)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/ddl.py", line 58, in visit_table
    self.connection.execute(schema.CreateTable(table))
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1191, in execute
    params)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1244, in _execute_ddl
    return self.__execute_context(context)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1302, in __execute_context
    context.parameters[0], context=context)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1401, in _cursor_execute
    context)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1394, in _cursor_execute
    context)
  File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/default.py", line 299, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.OperationalError: (OperationalError) table images already exists u'\nCREATE TABLE images (\n\tid INTEGER NOT NULL, \n\tname VARCHAR(255), \n\ttype VARCHAR(30), \n\tsize INTEGER, \n\tstatus VARCHAR(30) NOT NULL, \n\tis_public BOOLEAN NOT NULL, \n\tlocation TEXT, \n\tcreated_at DATETIME NOT NULL, \n\tupdated_at DATETIME, \n\tdeleted_at DATETIME, \n\tdeleted BOOLEAN NOT NULL, \n\tPRIMARY KEY (id), \n\tCHECK (deleted IN (0, 1)), \n\tCHECK (is_public IN (0, 1))\n)\n\n' ()
dpkg: error processing glance (--configure):
 subprocess installed post-installation script returned error exit status 1