Add OCI Service Discovery

[sw-samuraj]

Proposal

Add OCI Service Discovery support

Oracle Service Infrastructure (OCI) is a cloud IaaS, similar to EC2, GCE, or OpenStack which already have support for Prometheus service discovery. It would be suitable to have OCI service discovery as well.

I've already forked Prometheus and implemented the first version of OCI service discovery (branch oci-service-discovery), therefore after some polishing, I could provide a pull request.

We are currently building a solution build on OCI infrastructure where Prometheus monitoring is an important component - as such, we are developing and testing OCI service discovery in a real OCI environment (I'm mentioning this because it's probably not so straightforward to have OCI access).

[krasi-georgiev]

Thanks for the suggestion. Unfortunately, we are currently not accepting new integrations.

We can only provide the stability and performance we want to provide if we can properly maintain the codebase. This includes, test integrations in an automated and scalable fashion. For this reason, we are suggesting people to integrate via file SD and here is a very good example to show this in practise. We would be more than happy to list this on our integrations page.

Even if existing integrations can not be tested in an automated fashion, we will not remove them for reasons of compatibility. This also means that any additions we take on, or any changes to existing integrations we make or accept, will mean maintaining and testing these until at least the next major version, realistically even beyond that.

Feel free to question this answer on our developer mailing list, but be aware it's unlikely that you will get a different answer.

[sw-samuraj]

I've posted a question to the developer mailing list: Is it a service discovery via file_sd efficient enough to handle hundreds of instances.