Unexpected keyword argument 'cache_cas' after upgrade keystone from Grizzly to Havana

[li,chen]

Hi list,

I'm working under CentOS 6.4.

I'm trying to upgrade my set-up from Grizzly to Havana, after I upgraded keystone, I get error:
        keystone user-list
        Authorization Failed: init() got an unexpected keyword argument 'cache_cas' (HTTP 400)

After change to token driver back to sql,
        [token]
        driver = keystone.token.backends.sql.Token
        # driver = keystone.token.backends.memcache.Token

It works normal again.

As the keystone.log pointed, the issue is caused by "keystone/token/backends/memcache.py":
        self._memcache_client = memcache.Client(memcache_servers, debug=0,
                                                cache_cas=True)

But, I checked my phython-memcached, I believe it is already the newest version:
        yum list | grep memcache
        memcached.x86_64 1.4.4-3.el6 @base
        python-memcached.noarch 1.43-6.el6 @base

Anyone know why this happen?

Thanks.
-chen

[Morgan Fainberg (mdrnstm)]

This is an issue with the version of the python-memcache library provided. The correct version is 1.48. I am working to get the test-requires.txt updated to reflect this change for havana as well. The bug has been filed with RedHat (in their bugzilla) to ensure the Havana RDO and RHOS have the right RPMs

https://bugzilla.redhat.com/show_bug.cgi?id=986423

[Pádraig Brady (p-draigbrady)]

python-memcached-1.53 is now available for RDO
Leaving this bug open to track the setting of the correct min version in keystone's test-requirements.txt
Should this be >= 1.48 or >= 1.53 ?

[Morgan Fainberg (mdrnstm)]

1.48 is correct and was set as the minimum value for both havana and beyond.