References

References

Where the answers actually come from.

OpenStack

• DevStack install and local.conf
• OpenStack client every command
• clouds.yaml format
• Neutron networks and security groups
• Kolla-Ansible production deployment

Terraform

• OpenStack provider
• azurerm provider

Ansible

• Documentation
• Becoming an unprivileged user explains why the acl package is installed on the target

Azure

• Virtual machines sizes and nested virtualization
• Azure CLI

The rest

• k3s
• cloud-init
• Ubuntu cloud images

What no document told us

Half of what this lab hit is in none of the pages above:

• The subscription policy came from the error message, which listed the allowed sizes
• The password breaking RabbitMQ came from a Python traceback buried in stack.sh.log
• The unreachable service catalog came from running openstack catalog list and reading the URLs

Reading a log and forming a hypothesis matters more than knowing the documentation by heart. See Troubleshooting for the full list.