cert-manager
Automated TLS certificate management for Kubernetes
cert-manager is an open-source CNCF project that automates the issuance and renewal of TLS certificates in Kubernetes. It integrates with Let's Encrypt and other issuers for self-hosted clusters.
Key features
- Automatic certificate renewal
- ACME and CA issuers
- Kubernetes native
- DNS and HTTP challenges
Strengths
- Released under the Apache-2.0 license
- Kubernetes-ready with Helm charts available
- Mature project with 14k GitHub stars
- Written in Go
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