Feature Request: Prometheus Endpoint for Large Scale Monitoring

[liskl]

I'd love to see a Prometheus Endpoint for Eth Miner hosted on the microhttpd interface maybe

/metrics route

that can give us more time based stats for the service using just a reqular http plain/text based output page.

examples of howto display the text so prometheus can pull it easily
https://prometheus.io/docs/instrumenting/exposition_formats/

would be willing to pitch a few Etherium to whoever just gets the following instrumented on the http://0.0.0.0:3333/metrics route

# TYPE hashes_Per_Second Gauge
hashes_Per_Second 24770000
shares_Accepted_Total_Since_Start 200```

[smurfy]

@chfast
Wanted to start working on a remote monitoring but i ran into various things.

• libjsonrpccpp has no http_server enabled (missing microhttpd)
• libjsonrpccpp tcp socket server fails to compile on windows
• microhttpd not yet a hunter module (i saw you are working on that)

Also not sure if we should use prometheus "protocol".
My idea would be, a claymore api compatible. there is already a monitor tool for that.

[chfast]

Yes, I'm working on bringing libmicrohttpd to Hunter, but it is not top priority. Do you need JSON RPC for this?

[smurfy]

Not necessarily, but libmicrohttpd would probably help in most cases.
Will maybe do some more tests with the tcp socket server. i'm new to cmake and hunter.

[emily-pesce]

This would be HUGE! I'd love to be able to use Ethminer in AwesomeMiner with claymore-level monitoring!!!

[smurfy]

I will create a PR in the next 24h with basic stats support. (Works with ethmon from claymore)
The PR will be a Work in progress. More information in the PR description once created.

[liskl]

Still would love the Prometheus http /metrics endpoint. For me that would be way more scalable in large infrastructure and homelabs.

[smurfy]

@liskl I hear you, the plan is to extend the api to support different protocols in the future. (like prometheus). I think it depends a bit on libmicrohttpd or similiar library supported by hunter.

[jean-m-cyr]

I think it depends a bit on libmicrohttpd or similiar library supported by hunter.

Why not just boost::network::http ?

[DeadManWalkingTO]

Now it's better.
Try latest version and feedback please.
Thank you!

[AndreaLanfranchi]

Easy to implement now with new API server.
Need specs about metrics

[8-Lambda-8]

#2398
I Implemented it into the API Server

[8-Lambda-8]

Grafana dashboard with data from Prometheus: