[ops] Where is the instance Action Log stored and how to externally access it and send to ELK?

Where is the instance Action Log stored (the one you can see on the Horizon dashboard if you select an instance) and how can it be externally accessed, either by CLI or HTTPS or in any other way? It doesn't seem to map to anything stored in the Nova logs in /var/log/nova, at least that I can see. We want to send instance Action Logs to an ELK stack for indexing and display, but are not yet able to figure out how to do so. John M. Linebarger, PhD, MBA Principal Member of Technical Staff Sandia National Laboratories (Work) 505-845-8282