Cert Manager on Support Tools

Honeycomb Certificate Expiry Outage: 2.5-Hour Production Incident Analysis

Tue, 04 Aug 2026 00:00:00 -0500

On April 27, 2022, Honeycomb experienced a 2.5-hour production outage that affected their entire Kubernetes infrastructure. The root cause was deceptively simple: expired certificates for the Kubernetes API server. This incident highlights a critical blindspot in many production Kubernetes deployments—certificate lifecycle management. In this comprehensive analysis, we’ll examine the incident, its root causes, and implement production-ready solutions to prevent similar failures.

Enterprise Erlang Clustering in Kubernetes: Implementing Mutual TLS for Secure Distributed Systems

Sat, 27 Jun 2026 00:00:00 -0500

Building fault-tolerant distributed systems requires robust clustering mechanisms that can handle network partitions, node failures, and security threats. Erlang’s legendary clustering capabilities, combined with Kubernetes orchestration and modern certificate management, create a powerful foundation for enterprise-grade distributed applications. This comprehensive guide demonstrates how to implement secure Erlang clusters with mutual TLS authentication, automated certificate lifecycle management, and production-ready monitoring.

Enterprise PKI Management with cert-manager: Automated Certificate Lifecycle in Production Kubernetes

Wed, 24 Jun 2026 00:00:00 -0500

Managing digital certificates at scale across distributed Kubernetes environments presents significant operational challenges for enterprise organizations. cert-manager transforms certificate lifecycle management from a manual, error-prone process into an automated, policy-driven system that ensures security compliance and operational efficiency. This comprehensive guide demonstrates enterprise-grade PKI implementation patterns, advanced automation strategies, and production-ready security practices for mission-critical infrastructure.

Kubernetes Ingress Hack: Managing Domain Names and TLS for External Applications

Thu, 01 May 2025 00:00:00 -0500

Kubernetes excels at managing domains and TLS certificates for applications running inside the cluster, but what about your legacy applications, standalone Docker containers, or specialized hardware that lives outside Kubernetes? This practical guide demonstrates a clever technique to extend Kubernetes’ powerful Ingress capabilities to any external application.

Deep Dive into cert-manager and Cluster Issuers in Kubernetes

Tue, 11 Feb 2025 08:21:00 -0600

Learn how cert-manager automates certificate management in Kubernetes and how to effectively use Cluster Issuers for TLS certificate automation.

Cert Manager

Tue, 17 Dec 2024 00:00:00 -0500

This is the known good design for Cert Manager using Helm or ArgoCD.

Installing cert-manager on Kubernetes

Sat, 18 May 2024 19:26:00 -0500

Simplify certificate management on Kubernetes by installing cert-manager. This guide covers installation, configuration, and usage, helping you automate certificate issuance and management.

Resolving the Cert-manager Bug: Unexpected EOF Lockup Issue

Fri, 13 Oct 2023 23:15:00 -0500

Cert-manager has had the unfortunate luck of having a bug that causes it to lock up. This blog post will discuss how to resolve this issue and provide a workaround solution for those experiencing the problem.

GH Issue

Resolving the Cert-manager Bug: Unexpected EOF Lockup Issue

Cert-manager is a popular Kubernetes add-on that helps manage SSL certificates for your applications running on Kubernetes clusters. However, like any software, it’s not immune to bugs and issues. One such issue that users have encountered is GitHub issue #4685, which causes Cert-manager to lock up with the following error message: