blackbox-exporter-values.yaml

config:
  modules:
    http_2xx:
      prober: http
      timeout: 30s
      http:
        valid_http_versions: ["HTTP/1.1", "HTTP/2"]
        no_follow_redirects: true
        preferred_ip_protocol: "ip4"

serviceMonitor:
  enabled: true
  defaults:
    labels:
      release: prometheus
    interval: 30s
    scrapeTimeout: 30s
  targets:
    - url: https://test.cablespaghetti.dev
      name: test.cablespaghetti.dev

prometheusRule:
  enabled: true
  additionalLabels:
    app: kube-prometheus-stack
    release: prometheus
  rules:
    - alert: UrlDown
      annotations:
        message: The status code of {{"{{ $labels.target }}"}} is 4xx or 5xx, or some other failure occurred such as a timeout (60 seconds) for the last 5 minutes.
      expr: probe_http_status_code >= 400 or probe_http_status_code == 0
      for: 2m
      labels:
        severity: critical
    - alert: SSLCertExpiry
      annotations:
        message: The SSL certificate for {{"{{ $labels.target }}"}} is going to expire in less than 2 weeks.
      expr: probe_ssl_earliest_cert_expiry - time() < 1209600
      for: 1m
      labels:
        severity: warning
    - alert: SSLCertExpiry
      annotations:
        message: The SSL certificate for {{"{{ $labels.target }}"}} is going to expire in less than 7 days.
      expr: probe_ssl_earliest_cert_expiry - time() < 604800
      for: 1m
      labels:
        severity: critical
    - alert: SlowResponseTime
      annotations:
        message: The response time for {{"{{ $labels.target }}"}} has been greater than 30 seconds for 5 minutes.
      expr: probe_duration_seconds > 30
      for: 5m
      labels:
        severity: warning