Comment 1 for bug 1930654

https://openstack-ci-reports.ubuntu.com/artifacts/8df/790554/12/check/bionic-train-ha/8df4e02/index.html

simplestreams uses the Keystone catalog to find endpoints.

The offending requests do come in through the haproxy running on the Glance unit so it's almost as if there is a mis-configuration there?

glance_0/var/log/haproxy.log:
Jun 2 22:53:27 juju-f2b745-zaza-531e4489bf5e-0 haproxy[15467]: 172.16.3.36:60054 [02/Jun/2021:22:53:27.815] tcp-in_glance_api glance_api_172.16.0.87/glance-0 1/0/7 622 -- 1/1/0/0/0 0/0
Jun 2 22:53:38 juju-f2b745-zaza-531e4489bf5e-0 haproxy[15467]: 172.16.3.36:60068 [02/Jun/2021:22:53:38.994] tcp-in_glance_api glance_api_172.16.0.87/glance-0 1/0/3 622 -- 1/1/0/0/0 0/0
Jun 2 22:53:49 juju-f2b745-zaza-531e4489bf5e-0 haproxy[15467]: 172.16.3.36:60082 [02/Jun/2021:22:53:49.689] tcp-in_glance_api glance_api_172.16.0.87/glance-0 1/0/7 622 -- 1/1/0/0/0 0/0

glance_0/var/log/apache2/other_vhosts_access.log:
172.16.0.87:443 172.16.0.87 - - [02/Jun/2021:22:53:27 +0000] "GET / HTTP/1.0" 400 0 "-" "-"
172.16.0.87:443 172.16.0.87 - - [02/Jun/2021:22:53:38 +0000] "GET / HTTP/1.0" 400 0 "-" "-"
172.16.0.87:443 172.16.0.87 - - [02/Jun/2021:22:53:49 +0000] "GET / HTTP/1.0" 400 0 "-" "-"

The crashdump does not contain the relevant configuration files, so it's hard to tell.