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Prometheus Support

Trickster fully supports accelerating Prometheus, which we consider our First Class backend provider. They work great together, so you should give it a try!

Most configuration options that affect Prometheus reside in the main Backend config, since they generally apply to all TSDB providers alike.

We offer one custom configuration for Prometheus, which is the ability to inject labels, on a per-backend basis to the Prometheus response before it is returned to the caller.

Injecting Labels

Here is the basic configuration for adding labels:

backends:
  prom-1a:
    provider: prometheus
    origin_url: http://prometheus-us-east-1a:9090
    prometheus:
      labels:
        datacenter: us-east-1a

  prom-1b:
    provider: prometheus
    origin_url: http://prometheus-us-east-1b:9090
    prometheus:
      labels:
        datacenter: us-east-1b

Interaction with ALB Merge Strategy

When using label injection with an ALB configured for Time Series Merge, injected labels are automatically stripped from responses before merging. This ensures that series from different backends are aggregated correctly, and the injected labels do not appear in the final response to the caller. See the ALB Merge Strategy documentation for details.