Reliable TLS for a Multi-Cluster Kubernetes Platform
Standardized TLS automation across AWS EKS environments with cert‑manager DNS‑01 and cross‑account DNS.
Challenge
A fast-growing SaaS company experienced frequent certificate outages due to failed HTTP‑01 challenges, cross‑account DNS complexity, and manual renewals.
Solution
- Implemented cert‑manager with DNS‑01 validation for wildcard certificates
- Configured IRSA roles for secure cross‑account Route 53 updates
- Standardized ingress via Helm and GitOps across clusters
- Added monitoring/alerts for proactive remediation
Impact
- Zero manual renewals post‑deployment
- 60% faster recovery in TLS‑related incidents
- Improved developer confidence and deployment flow