tl;dr: We should have a cross discussion concerning the replacement of Eventlet.wsgi and we want to invite you to join the discussion and hence help us to define a standardized approach in a collaborative way. The Eventlet WSGI module can be used for 2 things: 1. as a WSGI server to serve any kind of web framework (flask, routes, etc...) [1] 2. and in some cases as a framework for web applications [2] Some OpenStack deliverables are using it in one way or another. Some deliverables like Glance already have credible migrations opportunities. But some of you may still be wondering what is your option to replace the Eventlet WSGI features? That's a good question. Now that the specs defining the removal of Eventlet from oslo.service are merged we have to define the way we want to proceed for the WSGI features. Indeed, we decided to drop the WSGI support from oslo.service. That means that we have to define, at least, a "default" way to replace it. If we want to avoid having multiple ways to manage things, we have to provide some guidance and standardizations. For this reason, after the PTG, we encouraged the creation of the HTTP SGI Working Group [4]. This working group aim to answer which (W|A)SGI servers are needed or credible alternatives. Which framework we have/want/need to use in parallel with the SGI server. The outcomes created by this group will serve as "a default" to guide the community through the replacement of the WSGI features of Eventlet. We prepared comparisons of the available alternatives for each layer: - https://wiki.openstack.org/wiki/SGI-servers-comparison - https://wiki.openstack.org/wiki/web-frameworks-comparison - https://wiki.openstack.org/wiki/Http-libraries-comparison Feel free to comment and to put your pros and cons on the given related etherpads (see the links in the comparison). This topic will be discussed at each irc meeting on the #openstack-eventlet-removal channel [5], until we find a default official option. Next meeting date is: 2024 December 3rd [6]. It would be good to reach an official consensus before the Milestone 3 of Epoxy. The goal is simply to ensure that our community looks in the same direction and that everyone is on the same page. We want to ensure that nobody is left behind. Feel free to reply to this thread or to put your comments directly on the various etherpads [6][7][8][9]. Thanks for reading. [1] https://eventlet.readthedocs.io/en/latest/reference/api/eventlet.html#module... [2] https://eventlet.readthedocs.io/en/latest/modules/wsgi.html [3] https://review.opendev.org/c/openstack/oslo-specs/+/927503 [4] https://wiki.openstack.org/wiki/Eventlet-removal#The_HTTP_SGI_Working_Group [5] https://meetings.opendev.org/meetings/openstack_eventlet_removal/ [6] https://etherpad.opendev.org/p/epoxy-eventlet-tracking [7] https://etherpad.opendev.org/p/eventlet-removal-SGI-servers-comparison [8] https://etherpad.opendev.org/p/eventlet-removal-web-frameworks-comparison [9] https://etherpad.opendev.org/p/eventlet-removal-http-libraries-comparison -- Hervé Beraud Senior Software Engineer at Red Hat irc: hberaud https://github.com/4383/