Great, yeah we have also seen these issues with nova-api with keystonemiddle in
newton and ocata.
Thanks for the heads up as I was going to start digging deeper.
Cheers,
Sam
> On 31 Jul 2018, at 10:09 am, iain MacDonnell
> wrote:
>
>
> Following up on my own question, in case it's useful
Following up on my own question, in case it's useful to others
Turns out that keystonemiddleware uses eventlet, and, by default,
creates a connection to memcached from each green thread (and doesn't
clean them up), and the green threads are essentially unlimited.
There is a solution for
In diagnosing a situation where a Pike deployment was intermittently
slower (in general), I discovered that it was (sometimes) exceeding
memcached's maximum connection limit, which is set to 4096.
Looking closer, ~2750 of the connections are from 8 neutron-server
process. neutron-server is c
