When creating a cell using the nova-manage cell create command, the transport_url generated in the database is url-encoded (i.e. '=' is changed to '%3D', etc.) That's propably the correct behavior, since the connection string is stored as URL.
However, nova-cells doesn't properly decode that string. So for transport_url credentials that contain url-encodable characters, nova-cells uses the url encoded string, rather than the actual correct credentials.
Steps to reproduce:
- Create a cell using nova-manage with credentials containing url-encodable characters:
nova-manage cell create --name=cell_02 --cell_type=child --username='the=user' --password='the=password' --hostname='hostname' --port=5672 --virtual_host=/ --woffset=1 --wscale=1
- nova.cells table now contains a url-encoded transport_url:
mysql> select * from cells \G
*************************** 1. row ***************************
created_at: 2014-12-30 17:30:41
updated_at: NULL
deleted_at: NULL
id: 3
api_url: NULL
weight_offset: 1
weight_scale: 1
name: cell_02
is_parent: 0
deleted: 0
transport_url: rabbit://the%3Duser:the%3Dpassword@hostname:5672//
1 row in set (0.00 sec)
- nova-cells uses the literal credentials 'the%3Duser' and 'the%3Dpassword' to connect to RMQ, rather than the correct 'the=user' and 'the=password' credentials.
usename and password are parsed by oslo.messaging here: https:/