[openstack-dev] [heat] Deprecate/Remove deferred_auth_method=password config option

Rabi Mishra ramishra at redhat.com
Fri Jun 16 05:11:06 UTC 2017

Hi All,

As we know,  'deferred_auth_method=trusts' being the default, we use
trust_auth_plugin whenever a resource requires deferred_auth (any resource
derived from SignalResponder and StackResource). We also support
'deferred_auth_method=password' where  'X-Auth-User'/username and
'X-Auth-Key'/password is passed in the request header and we then store
them in 'user_creds' (rather than 'trust_id')  to create a 'password'
auth_plugin when loading the stack with stored context for signalling. I
assume for this very reason we've the '--include-pass' option in heat cli.

However, when using keystone session(which is the default), we don't have
the above implemented with SessionClient (i.e to pass the headers). There
is a bug[1] and patch[2]  to add this to SessionClient in the review queue.
Aslo, we don't have anything like '--include-pass' for osc.

I've noticed that 'deferred_auth_method=password' is broken and does not
work with keystone v3 at all. As we don't store the 'user_domain_id/name'
in 'user_creds', we can not even intialize the 'password' auth_plugin when
creating the StoredContext, as it would not be able to authenticate the
user without the user_domain[3].

I'm not sure whether this works with keystone v2 and anyone is using it or
not. Keeping in mind that heat-cli is deprecated and keystone v3 is now the
default, we've 2 options

1. Continue to support 'deferred_auth_method=passsword' option and fix all
the above issues.

2. Remove/deprecate the option in pike itlsef.

I would prefer option 2, but probably I miss some history and use cases for


[1] https://bugs.launchpad.net/python-heatclient/+bug/1665321

[2] https://review.openstack.org/435213


Rabi Mishra
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