Use Case

We have a security requirement that mandates certain headers be returned on HTTP responses. Currently there is no way to apply these for outputs.prometheus_client, although it appears other plugins have that capability. Ideally it'd be as simple as:

[[outputs.prometheus_client]]
  listen = ":9273"
  http_headers = {"X-Special-Header" = "Special-Value"}
[[inputs.system]]

Expected behavior

$ curl http://localhost:9273 -v |& grep X-Special-Header
< X-Special-Header: Special-Value

Actual behavior

2025-02-27T17:05:25Z E! [telegraf] Error running agent: error loading config file test.conf: plugin outputs.prometheus_client: line 3: configuration specified the fields ["http_headers"], but they weren't used

Additional info

No response