README
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thanos-querier-prometheus-sd
A simple service to watch Kubernetes Prometheus custom resource instances and write the gathered targets to a service discovery file for the Thanos querier.
Overview
This service currently has a very simple, rudimentary implementation. It lists all services in its Kubernetes cluster
that contain a specific label key-value pairing (operated-prometheus=true), which is set by the Prometheus operator.
From each service it builds a DNSSRV record and adds that to a target list to be written out as a YAML file for
ingestion by a Thanos Querier. This service will then wait for a specified interval, after which it will relist and
rewrite the file.
The intended use case here is to run this as a sidecar container that writes out the result file to a shared volume with a Thanos Querier configured to read additional targets from the shared volume.
Usage
At present there are only two CLI flags that can be set: the wait interval duration, and the output file location.
| CLI Flag | Default | Description |
|---|---|---|
interval |
10000 |
The number of milliseconds to wait before regenerating the targets file. |
output-file |
/tmp/tqsd/result.yaml |
The filesystem location of the output targets file. |
Directories