Hello, [Following up a previous unfinished case/task with an enhanced network] I am trying to build a minimum usable production-level cloud with OpenStack Ansible following online reference. (https://docs.openstack.org/project-deploy-guide/openstack-ansible/2025.1/) openstack-ansible version: stable/2025.1 4 servers as target hosts, all with Ubuntu 24.04LTS. Each server has two Ethernet ports enp11s0f0, enp11s0f1. All servers’ enp11s0f1 ports has a fixed public IP (10.2.46.XX/24) and has access to Internet. All servers’ enp11s0f0 ports are intended to be used for OpenStack traffic. They are assigned IP range in 172.29.XX.XX for internal use. The idea of design: 1) Infra1: Controller 1 + networking 1 2) Infra2: Controller 2 + networking 2 3) Compute 1: Compute 1 + networking 3 + storage 1 4) Compute 2: Compute 2 + networking 4 + storage 2 Reference: The network topology and the deployment configuration (including user_variables.yml and openstack_user_config.yml) for a trial run can be found: https://github.com/holywi/git-tutorial/tree/master While, with this setting the deployment always failed by reporting errors seems to be related to HAproxy. I am wondering it is related to network design and services assignment. It would be grateful if anyone can provide some comments, suggestions or some common practices for the similar case. Some questions have popped up in my mind: 1) Does it make sense to make each host to access Internet on its own? It seems possible since each server has dedicated port and Openstack can support local routers? If not, how can these servers access Internet? 2) Is it good to make all 4 hosts the HAproxy server? 3) If using an FQDN for internal_lb_vip_address (it seems to be the case in the reference config) where the DNS server is located and how to make it happen? I don't see any setting which is related to DNS and DHCP which seems to be useful as well. Highly appreciate for any feedback as a new comer for Openstack.