GitHub - flanksource/canary-checker: Kubernetes Native Health Check Platform

helm repo add flanksource https://flanksource.github.io/charts
helm repo update

helm install \
  canary-checker \
  flanksource/canary-checker \
  -n canary-checker \
  --create-namespace \
  --wait

apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: http-check
spec:
  schedule: "@every 30s"
  http:
    - name: basic-check
      url: https://httpbin.flanksource.com/status/200
    - name: failing-check
      url: https://httpbin.flanksource.com/status/500

wget  https://github.com/flanksource/canary-checker/releases/latest/download/canary-checker_linux_amd64 \
-O canary-checker &&  chmod +x canary-checker
./canary-checker run canary.yaml

kubectl apply -f canary.yaml

NAME         SCHEDULE      STATUS   LAST CHECK   UPTIME 1H        LATENCY 1H   LAST TRANSITIONED
http-check   @every 30s    Passed   13s          18/18 (100.0%)   480ms        13s

# Run a container that executes a playwright test, and then collect the
# JUnit formatted test results from the /tmp folder
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: playwright-junit
spec:
  schedule: "@every 2m"
  junit:
    - testResults: "/tmp/"
      name: playwright-junit
      spec:
        containers:
          - name: playwright
            image: ghcr.io/flanksource/canary-playwright:latest

# Deploy a temporary pod and service, wait for readiness, call the service, and then clean up.
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: kubernetes-resource-check
spec:
  schedule: "@every 5m"
  kubernetesResource:
    - name: service-accessibility
      namespace: default
      waitFor:
        expr: 'dyn(resources).all(r, k8s.isReady(r))'
        interval: 2s
        timeout: 2m
      resources:
        - apiVersion: v1
          kind: Pod
          metadata:
            name: httpbin-pod
            namespace: default
            labels:
              app: httpbin
          spec:
            containers:
              - name: httpbin
                image: kennethreitz/httpbin:latest
                ports:
                  - containerPort: 80
        - apiVersion: v1
          kind: Service
          metadata:
            name: httpbin
            namespace: default
          spec:
            selector:
              app: httpbin
            ports:
              - port: 80
                targetPort: 80
      checks:
        - http:
            - name: call-httpbin-service
              url: http://httpbin.default.svc/status/200
      checkRetries:
        delay: 2s
        interval: 3s
        timeout: 2m

# Checks that a recent DB backup has been uploaded
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: folder-check
spec:
  schedule: "0 22 * * *"
  folder:
    - path: s3://database-backups/prod
      name: prod-backup
      maxAge: 1d
      minSize: 10gb

apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: alertmanager-check
spec:
  schedule: "*/5 * * * *"
  alertmanager:
    - url: alertmanager.monitoring.svc
      alerts:
        - .*
      ignore:
        - KubeScheduler.*
        - Watchdog
      transform:
        # for each alert, transform it into a new check
        javascript: |
          var out = _.map(results, function(r) {
            return {
              name: r.name,
              labels: r.labels,
              icon: 'alert',
              message: r.message,
              description: r.message,
            }
          })
          JSON.stringify(out);

apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: exchange-rates
spec:
  schedule: "@every 1h"
  http:
    - name: exchange-rates
      url: https://api.frankfurter.app/latest?from=USD&to=GBP,EUR,ILS
      metrics:
        - name: exchange_rate
          type: gauge
          value: result.json.rates.GBP
          labels:
            - name: "from"
              value: "USD"
            - name: to
              value: GBP

apiVersion: v1
kind: Secret
metadata:
  name: basic-auth
stringData:
  user: john
  pass: doe
---
apiVersion: canaries.flanksource.com/v1
kind: Canary
metadata:
  name: http-basic-auth-secret
spec:
  http:
    - name: http-basic-auth
      url: https://httpbin.flanksource.com/basic-auth/john/doe
      username:
        valueFrom:
          secretKeyRef:
            name: basic-auth
            key: user
      password:
        valueFrom:
          secretKeyRef:
            name: basic-auth
            key: pass