export otel metrics to "actuator/prometheus"

[xiangtianyu]

Due to some special reasons, our system will only expose one port 8080, so we want to export otel metrics to "actuator/prometheus", is there any solution for this?

[jaydeluca]

i'm not sure I 100% understand your question. I'm assuming you are already using the prometheus exporter? Do you want to change the prometheus server port to 8080 from the default 9464 or change the endpoint? Also, the agent doesn't have this functionality, I think you would need to configure the SDK directly https://opentelemetry.io/docs/languages/java/sdk/#metricexporter

You can do this with declarative file config but i don't see a way to change the endpoint from /metrics to /prometheus.

[xiangtianyu]

i'm not sure I 100% understand your question. I'm assuming you are already using the prometheus exporter? Do you want to change the prometheus server port to 8080 from the default 9464 or change the endpoint? Also, the agent doesn't have this functionality, I think you would need to configure the SDK directly https://opentelemetry.io/docs/languages/java/sdk/#metricexporter

You can do this with declarative file config but i don't see a way to change the endpoint from /metrics to /prometheus.

I know how to change port and config prometheus server. My problem is our env can only expose one port "8080" and it's our application port, so the prometheus server port "9464" will not expose, so i am seeking a way to reuse 8080 with prometheus exporter