In FT DA environments you can:
- Use Proxy_Host:8581/odataquery to access the OpenAPI tool. It will redirect to the requests to the Active DA.
- Use Active_DA_Host:8581/odataquery to access the OpenAPI tool.
Note that if fail-over occurs until one DA is in an Active state the OpenAPI tool won't be available or provide a successful response from scripted Odata queries.
Broadcom recommendation is to always use the Proxy_Host for OpenAPI queries. Doing so makes it far easier to manage. Using the DA hosts directly will result in additional administrative overhead in the form of manage which DA is Active at the time to ensure the correct host is targeted for OpenAPI queries.