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kubernetes•May 20, 2026
Encrypt Kubernetes Traffic with cert-manager and Let's Encrypt
Most Kubernetes clusters do not encrypt pod-to-pod traffic and Ingress traffic by default. cert-manager solves this by automating certificate management and rotation. This article covers how to use cert-manager to encrypt Kubernetes traffic.
freecodecamp
Original source
Key summary
Learn how to encrypt Kubernetes traffic using cert-manager, Let's Encrypt, and internal TLS. Discover how to automate public Ingress TLS and set up an internal Certificate Authority for service-to-service encryption.
TL;DR
- Kubernetes clusters do not encrypt pod-to-pod traffic and Ingress traffic by default.
- cert-manager automates certificate management and rotation.
- Use cert-manager to encrypt Kubernetes traffic with Let's Encrypt and internal TLS.
- Automate public Ingress TLS using Let's Encrypt.
- Set up an internal Certificate Authority for service-to-service encryption.
- Understand how certificate rotation works to prevent outages caused by expired certificates.
- Use cert-manager's core model to manage certificates and automate rotation.
This content is automatically summarized using AI. For full context, always refer to the original article.
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