Management interfaces are down, controller is up, 504 gateway timeout in Red Hat OpenStack Platform
Issue
Due to an outage on specific NICs, a controller's management interfaces are down. While the controller is still up, it cannot be reached for management. Since this happened, it seems that the controller is blackholing traffic that is routed towards it via haproxy.
Environment
Red Hat OpenStack Platform 10
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.