Automated Renewal Verification
How CertificateGuardian validates local ACME, Certbot, or cert-manager automated renewals.
Automated renewal systems like Certbot, Let's Encrypt, or Kubernetes cert-manager run on local infrastructure to refresh certificates before expiration. However, these pipelines can fail silently due to DNS drifts, firewall modifications, or web server reload errors.
External Verification
CertificateGuardian acts as a verification safety net:- Daily Validation: We query your public-facing endpoints daily to check the certificate actively being served.
- Reload Mismatches: If your certificate is renewed on disk but the web server failed to reload, we identify the old certificate and alert you immediately.
- Grace Period Monitoring: Escalates notification rules as expiration dates approach.
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