Unable to connect the mimir ruler with the thanos query frontend (Unimplemented desc = unknown service httpgrpc.HTTP)

[sarthaktyagi-505]

Hey guys,

I am working on connecting the mimir ruler to thanos query frontend as part of federating queries for rules from mimir clusters but I run into following issue.

Unimplemented desc = unknown service httpgrpc.HTTP

My assumption was that mimir ruler would have directly connected to thanos query-frontend like the queriers did but seems like there is a missing implementation of the above service on thanos side. Can someone shed some light on how I can make this to work. Maybe a proxy between ruler and thanos query frontend which implements the Service and routes it to the downstream thanos federation layer or is there a way we can set the following property -ruler.query-frontend.address to connect to http endpoint of the thanos query frontend.

Thanks in advance.

[deniszh]

thanos query frontend can talk only to thanos, I'm afraid.
I had similar task in my mind, and my proposed solution is to make ruler talk to http intead of grpc. But I didn't look it up closely.

[sarthaktyagi-505]

I was able to get it working with a small proxy which exposes http and grpc port both, I talk to mimir using grpc and send the requests to thanos using http and vice versa. Thanks @deniszh