A comprehensive guide to troubleshooting worker node failures in Kubernetes, with practical examples and strategies relevant to the Certified Kubernetes Administrator (CKA) exam.

An in-depth guide to troubleshooting Kubernetes cluster component failures, with a focus on techniques relevant to the Certified Kubernetes Administrator (CKA) exam.

A comprehensive guide to troubleshooting application failures in Kubernetes, focusing on techniques and strategies relevant to the Certified Kubernetes Administrator (CKA) exam.

A comprehensive guide to implementing monitoring and logging in Kubernetes clusters, including the installation of Metrics Server and best practices for observability.

A comprehensive guide to backing up and restoring ETCD in Kubernetes clusters, including step-by-step instructions and best practices for disaster recovery.

A step-by-step guide to safely upgrading a multi-node Kubernetes cluster using kubeadm, including best practices and troubleshooting tips.

A comprehensive guide on generating, managing, and working with TLS certificates in Kubernetes, including creating CSRs, approving them, and retrieving certificates.

A comprehensive guide to deploying applications, creating services, and exposing them to the external world using Kubernetes Ingress, with practical examples and best practices.

A comprehensive exploration of Kubernetes networking concepts, Container Network Interface (CNI), and practical demonstrations of network namespaces and veth pairs.

An in-depth exploration of CoreDNS in Kubernetes, its role in service discovery, and how it enhances cluster networking capabilities.

This is a follow-up to [Running nanoGPT on a MacBook M2 to generate terrible Shakespeare](https://til.simonwillison.net/llms/nanogpt-shakespeare-m2).

I found a useful pattern today for automating more complex AWS processes as pastable command line snippets, using [Boto3](https://aws.amazon.com/sd...

An in-depth exploration of how SSL/TLS works, with custom diagrams and animations to illustrate the handshake process and encryption mechanisms.

A comprehensive guide to implementing and understanding ConfigMaps and Secrets in Kubernetes, with practical examples of injecting configuration and sensitive data into pods.

A comprehensive guide to implementing and understanding health probes in Kubernetes, with practical examples of liveness and readiness probes.

A comprehensive, hands-on guide to implementing and understanding Horizontal Pod Autoscaling (HPA) in Kubernetes, with practical examples and key insights.

A hands-on guide to implementing and understanding resource requests and limits in Kubernetes, with step-by-step instructions and practical examples.

A hands-on guide to implementing and understanding Node Affinity in Kubernetes, with step-by-step instructions and real-world examples.

A comprehensive, hands-on guide to understanding and implementing taints and tolerations in Kubernetes, with step-by-step instructions and practical examples.

A practical guide to manually scheduling pods, working with static pods, and using labels and selectors in Kubernetes, with step-by-step instructions and examples.

A comprehensive guide to understanding and implementing DaemonSets and CronJobs in Kubernetes, with practical examples and clear explanations.

A comprehensive guide to creating multi-container pods and working with environment variables in Kubernetes, with practical examples and clear explanations.

A comprehensive guide to Kubernetes Namespaces, including practical exercises on creating resources, networking between namespaces, and DNS resolution.

A comprehensive guide to implementing a secure internal PKI infrastructure using HashiCorp Vault as a certificate authority with root and intermediate CAs, integrated with CoreDNS for service discovery and Nginx for HTTPS services.