[discussion] Can Ozhera separate the log collection module and deploy it separately?

Issue Description:
OzHera is an great Observable Platform，it integrates metrics monitoring, link tracing, logging, and alerts. But my application is relatively lightweight, with only a few servers, and some applications even have only one server. OzHera is too heavy for me. I don't need link tracing. What I want more is the log collection.

**Can the log collection module be separated and deployed separately?**