yahoo-eng-team team mailing list archive

[melanie witt <1995028@xxxxxxxxxxxxxxxxxx>]

Hi, running nova-api or nova-metadata-api using the eventlet server was
deprecated in the Rocky release [1] and is no longer supported.

API services can and should be run using WSGI servers such as uwsgi or
mod_wsgi:

https://docs.openstack.org/nova/latest/user/wsgi.html

If you encounter issues running under one of these servers, please feel
free to re-open this bug or open a new bug and we will take a look.


[1] https://docs.openstack.org/releasenotes/nova/rocky.html#deprecation-notes

** Changed in: nova
       Status: New => Won't Fix

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1995028

Title:
  list os-service causing reconnects to memcached all the time

Status in OpenStack Compute (nova):
  Won't Fix

Bug description:
  Description
  ===========

  we are running a victoria openstack cluster (python3). and I observe
  that everytime when an openstack compute service list executed, nova-
  api will create a new connection to memcache. Actually there are
  several reasons to cause this behavior

  1. when running natively with eventlet's wsgi server, everytime a new coroutine is created to host web request and this causes keystonemiddle auth_token which uses python-memcached to reconnect to memcahced all the time
  2. os-services will trigger nova.availability_zones.set_availability_zones and it will update cache every time, since cellv2 is enabled, this method is running in an co-routine as well
  3. python-memcached's Client is inheriting from threading.local which will be monkey_patched to use eventlet's implementation and thus for every co-routine context it will create a new connection

  Steps to reproduce
  ==================

  1. Patch def _get_socket and print connection
  2. execute openstack compute service list

  Expected result
  ===============

  Maintain stable connections to memcached

  Actual result
  =============

  Reconnects

  Environment
  ===========

  1. devstack victoria openstack

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1995028/+subscriptions