AWS Lambda + Python: Handle S3 Events and Errors Like a Pro
Learn how to trigger an AWS Lambda function from S3 uploads using Python, with real error handling that won't leave you guessing at 2am.
Helm Chart Environment Overrides for Staging and Production Deployments
Managing Helm values across environments requires a disciplined layering strategy, not duplicated charts. This tutorial walks through structuring base and override files so staging and production deployments stay consistent, traceable, and easy to audit.
Docker Compose Game Server Monitoring for Rust and Arma 3
Build a complete Docker Compose monitoring stack for Rust and Arma 3 dedicated servers using a custom Python A2S exporter, Prometheus, and Grafana — with working code you can run in under ten minutes.
Cloudflare WAF Custom Rules for WordPress Origin Server Protection
Direct-IP attacks and bot-driven credential stuffing bypass Cloudflare entirely when your origin server is left unguarded. This tutorial walks through a layered WAF custom rule strategy — from authenticated-origin pull validation to scanner User-Agent filtering — implemented with Terraform and verified through Cloudflare Security Analytics.
Nightly Backup Automation with Bash, Cron, and Log Parsing
Build a production-ready Bash script that runs nightly via cron, backs up your server to S3, rotates old archives, and writes structured JSON logs you can query with jq — every command tested in real environments.
Blocking Sensitive Dotfiles in nginx-proxy for Dockerized WordPress
Exposed dotfiles like .env, .git, and .htpasswd are among the most exploited attack vectors in containerized WordPress deployments. This tutorial walks through writing a targeted nginx location rule, mounting it into nginxproxy/nginx-proxy without rebuilding the image, and verifying the block is active — without breaking Let's Encrypt ACME challenges.
Grafana Alerting Rules for Docker Host and Container Metrics
A practical walkthrough for wiring Prometheus alerting rules, Alertmanager notification channels, and Grafana-native alert rules into a single monitoring pipeline for Docker host and container metrics. Covers PromQL expressions for CPU throttling, memory pressure, and container restarts — with validation steps at each stage.
AWS Lambda for parsing ALB logs stored in S3 after CloudWatch Alert triggered
This article documents a Lambda-based ALB log parsing workflow triggered by CloudWatch alerts, focused on actionable parsing and operational visibility.
Terraform S3 Backend Setup with DynamoDB State Locking for Team Workflows
Storing Terraform state locally works fine in isolation, but it breaks down the moment a second engineer joins the project. This tutorial walks through provisioning an S3 backend with DynamoDB locking and wiring it into your Terraform project correctly.
Bash script for checking Function URL in AWS Lambda
A Bash-based AWS Lambda Function URL audit script that identifies public endpoints where AuthType is NONE and writes findings to a report file.
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