RabbitMQ annoying disconnections [kolla-ansible, rabbitmq]

Ben Nemec openstack at nemebean.com
Wed Sep 22 19:33:00 UTC 2021

On 9/22/21 2:05 PM, Sean Mooney wrote:
> On Wed, 2021-09-22 at 11:22 -0500, Ben Nemec wrote:
>> On 9/21/21 2:44 AM, bkslash wrote:
>>> So there are two questions:
>>> 1. Why heartbeat_in_pthread didn’t change situation? And if it’s
>>> deprecated it was kind of risky to use it long term (after upgrade to
>>> wallaby it would stop working anyway?)
>> It's deprecated because it became the default behavior in subsequent
>> releases. The functionality is not going away, just the ability to turn
>> it off.
>> The only reason it was ever configurable was that we had concerns about
>> mixing pthreads and greenthreads and wanted the people affected by the
>> original bug to test the combination for a couple of releases before we
>> turned it on for everyone.
> actully the ablity to trun it off is not going away either
> turing it on can break the nova comptue agent by breaking eventlet.
> https://bugs.launchpad.net/oslo.messaging/+bug/1934937
> here is the patch to undeprecate it https://review.opendev.org/c/openstack/oslo.messaging/+/800621
> based on the bug above this looke like it should be turned off unless you runing under mod_wsgi or uwsgi
> where the pthread is needed to escape there treadign lifecycle.

Ah, okay. I thought I remembered seeing some discussion about that but I 
missed the patch. +2.

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