[openstack-dev] [keystone] v3 token size exceeding eventlet header limit

Steve Baker sbaker at redhat.com
Thu Jun 13 23:20:24 UTC 2013


Enabling heat on an otherwise default devstack will increase the
keystone catalog so that the resulting v3 token header exceeds
eventlet.wsgi's limit [1] of 8192 bytes.

This is currently preventing Heat from being enabled in gating [2][3],
and others have hit this limit too [4].

The catalog-optional blueprint [5] might help, but it would probably
need to become the default fairly soon, since the current token size is
not far under the limit.

One possible (unverified) fix would be to patch every project's wsgi.py
to raise eventlet.wsgi. MAX_HEADER_LINE to provide some headroom (32768?
that leaves another 32768 for other headers)

Is there any objection to this? I can start with nova and keystone to
see if it fixes the failing tempest tests.

[1] https://github.com/eventlet/eventlet/blob/master/eventlet/wsgi.py#L19
[2] https://bugs.launchpad.net/keystone/+bug/1190149
[3] https://review.openstack.org/#/c/32002/
[4] https://bugs.launchpad.net/keystone/+bug/1186177
[5] https://blueprints.launchpad.net/keystone/+spec/catalog-optional
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