Comment 2 for bug 1835519

When following this guide: https://docs.openstack.org/kolla-ansible/rocky/user/multinode.html
The second section, "Configure Docker on all nodes", configures the "insecure registries" option via /etc/docker/daemon.json (which, as far as I know, is the recommended docker way to do it).

The bootstrap-servers command configures the same option via the systemd unit ExecStart command (--insecure-registries flag).

Even though there is no mention of the command bootstrap-servers in said multinode guide, if one executes it (for it to take care of the rest of the bootstrapping tasks) after enabling the insecure registries via daemon.json, the docker daemon crashes (more details at https://docs.docker.com/config/daemon/#troubleshoot-conflicts-between-the-daemonjson-and-startup-scripts)