Comment 5 for bug 1861792

Regular sudo commands in the container don't appear to make it happen. It appears to be only commands exec'd by the Neutron processes - some cgroup / process group connection.

I applied this patch from mnasiadka - https://review.opendev.org/#/c/707598/ - and it has stopped the resource leakage. What it does is restrict the mount of /var/run, so that there is no shared dbus connection between container and host.

I'm now checking if it has caused any side-effect issues.