Certificate Expiry Monitor vs helm-secrets: Side-by-Side Comparison (2026)

DevOps and platform teams running Kubernetes will get immediate value from Certificate Expiry Monitor because it catches certificate expirations before they cause outages, not after; the Prometheus integration means alerts land in the monitoring stack you already have rather than spawning another tool. The Docker-based deployment and native ingress discovery eliminate the manual certificate tracking spreadsheets that miss renewals across distributed environments. Skip this if you need centralized certificate lifecycle management with automated renewal workflows; Certificate Expiry Monitor is a monitor, not a manager, and works best paired with your existing provisioning process.