Comment 4 for bug 1844929

Looking at logstash again this goes back to at least Sept 14 (or older, logstash only saves up to 10 days of logs).

Note that as of Sept 13 upper-constraints is using oslo.service 1.40.2:

https://github.com/openstack/requirements/commit/4d3c335b5cd37dee768927b5360debfe4db7f696

Which is important because it has restart changes in it for a long-standing bug with SIGHUP:

https://review.opendev.org/#/c/641907/ (actually that was released in 1.40.1)

We've been using oslo.service 1.40.1 since Sept 3 in upper-constraints:

https://github.com/openstack/requirements/commit/d09bde76d6aed2a5e26c2018acdfa6b4d43f5456

So that might just be a red herring.