Any Metric

A go application that generates "fake" metrics on prom format. Perfect on early stages infrastructure building to test prometheus metric-scrapping before actual workloads are deployed.

Features

• Supports gauge and counter metric types.
• Metrics can be tailored as to its name, frequency and increment.
• Metrics are updated automatically based on the given frequency and increment.
• Exposes metrics on /metrics path.
• Typically uses (4+N) goroutines, where N is the number of metrics being generated.

Typical utilization

Any metric accepts any number of the metric flag: The flag format is: --metric:<name>:<frequency>:<increment>:<type>:

• <name>: Metric's name. Must be along https://prometheus.io/docs/practices/naming guidelines .
• <frequency>: How often the metric is increased. Accepts times using a fraction of value and a time prefix (e.g. 1ms, 2s, 3h). Please refer to https://pkg.go.dev/time#ParseDuration for further detail.
• <increment>: By how much the metric is increased. Accepts a 64-bit float.
• <type>: Type of the metric. Supports counter and gauge.

Locally from the terminal

• ./any-metric --metric=potatoWeight:3s:0.4:gauge --metric=tomatoesInTheBag:1s:0.2:counter
• docker run ghcr.io/luizfnunesmarques/any-metric:latest --metric=airplanesInTheSky:1s:0.5:gauge

Standalone pod

• Please refer to the examples/standalone-pod.yaml file.

Using the helm chart

A helm chart to help deploying the app is available at github.com/luizfnunesmarques/helm-charts.

• Add the repo: helm repo add luizmarques https://luizfnunesmarques.github.io/helm-charts
• Install the chart: helm install any-metric luizmarques/any-metric. The metrics can be passed along through the values file.