Hi list: I want to use kolla-ansible to deploy openstack , but using external mysql. I am following these docs: https://docs.openstack.org/kolla-ansible/latest/user/quickstart.html https://docs.openstack.org/kolla-ansible/latest/reference/databases/external.... I have some questions: ################ ## Question 1 ## ################ According to the offical doc , if setting it in inventory file(multinode), kolla-ansible -i ./multinode deploy will throw out error: I guest when kolla-ansible running the playbook against myexternalmariadbloadbalancer.com , the """register: find_custom_fluentd_inputs""" in """TASK [common : Find custom fluentd input config files]""" maybe null . ################ ## Question 2 ## ################ According to the offical doc , If the MariaDB username is not root, set database_username in /etc/kolla/globals.yml file: But in kolla-ansible/ansible/roles/xxxxxx/tasks/bootstrap.yml , they use ''' login_user: "{{ database_user }}" ''' , for example : So at last , I took the following steps: 1. """not""" setting [mariadb] in inventory file(multinode) 2. set "database_user: openstack" for "privillegeduser" PS: My idea is that if using an external ready-to-use mysql (cluster), it is enough to tell kolla-ansible only the address/user/password of the external DB. i.e. setting them in the file /etc/kolla/globals.yml and passwords.yml , no need to add it into inventory file(multinode) Finally , it is successful to deploy openstack via kolla-ansible . So far I have not found any problems. Are the steps what I took good ( enough ) ? Thank you !