[openstack-dev] mod_wsgi: what services are people using with it?

Kairat Kushaev kkushaev at mirantis.com
Mon Aug 22 09:44:29 UTC 2016


Just small note about mod_wsgi for Glance,
You need mod_wsgi v.4.4.0 or older to work with Glance in daemon mode.
Otherwise, glance should fail when uploading images.

Best regards,
Kairat Kushaev

On Sat, Aug 20, 2016 at 4:00 AM, Nick Papadonis <npapadonis at gmail.com>
wrote:

>
>
> On Fri, Aug 19, 2016 at 5:34 PM, John Dickinson <me at not.mn> wrote:
>
>>
>>
>> On 17 Aug 2016, at 15:27, Nick Papadonis wrote:
>>
>> > comments
>> >
>> > On Wed, Aug 17, 2016 at 4:53 PM, Matthew Thode <
>> prometheanfire at gentoo.org>
>> > wrote:
>> >
>> >> On 08/17/2016 03:52 PM, Nick Papadonis wrote:
>> >>
>> >>> Thanks for the quick response!
>> >>>
>> >>> Glance worked for me in Mitaka.  I had to specify 'chunked transfers'
>> >>> and increase the size limit to 5GB.  I had to pull some of the WSGI
>> >>> source from glance and alter it slightly to call from Apache.
>> >>>
>> >>> I saw that Nova claims mod_wsgi is 'experimental'.  Interested in it's
>> >>> really experimental or folks use it in production.
>> >>>
>> >>> Nick
>> >>
>> >> ya, cinder is experimental too (at least in my usage) as I'm using
>> >> python3 as well :D  For me it's a case of having to test the packages I
>> >> build.
>> >>
>> >>
>> > I converted Cinder to mod_wsgi because from what I recall, I found that
>> SSL
>> > support was removed from the Eventlet server.  Swift endpoint outputs a
>> log
>> > warning that Eventlet SSL is only for testing purposes, which is another
>> > reason why I turned to mod_wsgi for that.
>>
>> FWIW, most prod Swift deployments I know of use HAProxy or stud to
>> terminate TLS before forwarding the http stream to a proxy endpoint (local
>> or remote). Especially when combined with a server that has AES-NI, this
>> gives good performance.
>
>
> Thanks.  I'd be interested if anyone has done a performance comparison of
> HAProxy vs mod_wsgi to terminate.
>
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