'How to get spring boot cloud/actuator to support prometheus Exemplars?
The Exemplars support essentially adds the trace-id to metrics that are being scraped. I found a tutorial on how would it work with GoLang[1] but cannot figure out how to do this with spring boot libraries/functionalities. I know that Prometheus Java Client supports it as described at [2] but not sure how to get it to work with Springboot.
Solution 1:[1]
Update: Exemplars are supported by Micrometer and Spring Cloud Sleuth.
I'm not 100% sure I get your question right: I'm assuming you are talking about the /actuator/prometheus endpoint.
The support for metrics in Spring is provided by Micrometer that also supports Prometheus and Spring Boot "just" sets up an actuator endpoint for it.
So the real question is: does Micrometer support exemplars? Right now it does not and we haven't had anyone asking for it so far (this issue is a little bit connected). So if you want this feature, please open an issue(Enhancement request) on GitHub.
Update: I opened an issue for this: https://github.com/micrometer-metrics/micrometer/issues/2672, please feel free to +1 or chime-in.
Adding exemplars support in Micrometer is not the end of the story, we need to add support for Spring Cloud Sleuth too and solve a few other potential issues.
Until this is implemented, I guess your best bet is using the prometheus client.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 |