kolla-ansible/releasenotes/notes/fix-neutron-memcached-connection-issue-84f5affa217b4612.yaml
Pierre Riteau 5a52d8e4a0 Add workaround for keystonemiddleware/neutron memcached issue
There is an issue where keystonemiddleware connections to memcached from
neutron-server grow beyond configured values [1], eventually reaching
the maximum number of connections accepted by memcached servers. Other
services do not appear to be affected by this issue.

A workaround is to use the advanced memcached pool. Despite its
documentation claiming to only work with Python 2, it appears to work
fine on Python 3.

[1] https://bugs.launchpad.net/keystonemiddleware/+bug/1883659

Change-Id: Ifbbc2022839cbc575848d830600241c61603c80b
Closes-Bug: #1892210
2020-08-19 17:56:30 +02:00

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---
fixes:
- |
Fixes `LP#1892210
<https://bugs.launchpad.net/kolla-ansible/+bug/1892210>`__ where the number
of open connections to Memcached from ``neutron-server`` would grow over
time until reaching the maximum set by ``memcached_connection_limit`` (5000
by default), at which point the Memcached instance would stop working.