Kubernetes on One Box, Part 4: Networking, Policy and Drains, Hands-On
Watch the new cluster work: Pods talking across nodes, Services and DNS, a Cilium-enforced NetworkPolicy, and draining a worker safely.
KASI’S RUMBLINGS / THE ENGINEERING NOTEBOOK
Under the hood.
Out of curiosity.
Notes from the terminal and beyond.
Exploring Go, Linux, networks, and the things that make them tick.
FIELD NOTES
✳ FROM THE NOTEBOOK
A closer look at
your Go tests.
Step through Go tests, set breakpoints, and inspect what your code is actually doing.
Debugging with Delve ↗All writing / 13
SMALL DISCOVERIES, WRITTEN DOWN.↗
Kubernetes on One Box, Part 3: kubeadm init, Cilium and Guard Rails
Create the cluster with a playbook that only runs when you mean it: kubeadm init once, Cilium via Helm, worker joins, and a private kubeconfig.
Kubernetes on One Box, Part 2: Preparing Debian Nodes for kubeadm
One idempotent Ansible playbook for kernel modules, sysctls, swap, time sync, containerd 2.x and held Kubernetes packages.
Kubernetes on One Box, Part 1: Decide Before You Install
Pin compatible versions, choose Pod and Service CIDRs, and give the API server a stable name before kubeadm ever runs.
Perf Cheat Sheet
A scratchpad for investigating network utilization with Linux perf.
How To Debug Golang Test Functions with Delve
Step through Go tests, set breakpoints, and inspect what your code is actually doing.
Embedding in Go
A short note on pointers and embedding in Go.
Go Builder Pattern
Building complex objects, one deliberate step at a time.
Go Design Patterns
SOLID principles in Go: small types, small interfaces, and depending on abstractions.
How To Add DHCP Static Map in Edgerouter
Give devices a predictable address with static DHCP mappings in EdgeOS.
Configuring DNS over TLS on EdgeRouter
Taking a closer look at DNS privacy, encrypted queries, and an EdgeRouter setup.
Adding a Debian repository on EdgeRouter
Getting Debian packages onto an EdgeRouter, and working around older repositories.
Getting started with EdgeRouter
A home-networking playground for routing, VPNs, VLANs, and a little experimentation.
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