metrics.sr.ht/ssl_rules.yml

# vim: tw=2 sw=2 :
groups:
- name: ssl
  rules:
  - alert: SSL expiration
    expr: (certificate_expiration - time()) / 60 / 60 / 24 < 7
    for: 2m
    labels:
      severity: important
    annotations:
      summary: "{{ $labels.instance }} SSL certificate expires in < 1 week"