opsnotecloud~$ ls ./notes

All notes

Practical write-ups from building, breaking, and debugging systems.

  1. AWS VPC traffic flow diagram 001 Inside an AWS VPC: how public and private resources reach the internet Route tables, an Internet Gateway, a NAT Gateway, and an EC2 Instance Connect Endpoint - traced end to end with real commands. 2026.09.06 aws . networking . vpc
  2. AWK Linux log analysis illustration 002 The AWK playbook: turning millions of log lines into answers A practical mental model for fields, patterns, actions, and real Nginx log analysis from the command line. 2026.09.02 linux . nginx . awk