Prometheus

The Prometheus Check connects to the Prometheus host, performs the desired query, and displays the results.

prometheus.yaml
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: prometheus
spec:
  interval: 30
  prometheus:
    - url: https://prometheus.demo.aws.flanksource.com/
      name: prometheus-check
      query: kubernetes_build_info{job!~"kube-dns|coredns"}
      display:
        expr: results[0].git_version

Field	Description	Scheme
name*	Name of the check, must be unique within the canary	string
query*	PromQL query to execute	string
url*	Prometheus instance, if not specified in installation it is required	string
description	Description for the check	string
display	Expression to change the formatting of the display	Expression
icon	Icon for overwriting default icon on the dashboard	Icon
labels	Labels for check	map[string]string
metrics	Metrics to export from	[]Metrics
test	Evaluate whether a check is healthy	Expression
transform	Transform data from a check into multiple individual checks	Expression
connection	The connection to use, mutually exclusive with username and password	Connection
username		EnvVar
password		EnvVar

Result Variables

Name	Description	Scheme
value		float
firstValue	Number of rows returned	int
results	A list of results	[]map[string]interface