Posts
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Prometheus + Grafana on Docker: Know When Your Server Is Crying Before It Dies
Set up a self-hosted Prometheus and Grafana monitoring stack with Docker Compose. Stop flying blind, get metrics, dashboards, and alerts in under 30 minutes.
8 min read -
LangGraph vs CrewAI vs AutoGen: AI Agent Frameworks for Mere Mortals
Compare LangGraph, CrewAI, and AutoGen with real Python examples, local-LLM wiring for each, and a no-nonsense breakdown of which one to actually use.
· Updated:11 min read -
tcpdump Basics: Capture Traffic Without Wireshark
You don't need a GUI to see network packets. Learn tcpdump filters, flags, and pcap capture to debug servers from the command line, no Wireshark needed.
5 min read -
AppArmor vs SELinux: Mandatory Access Control Without the Existential Dread
AppArmor vs SELinux: what mandatory access control actually does, writing AppArmor profiles with aa-genprof, SELinux labels and audit2allow, and when to use each.
10 min read -
Your Server Doesn't Know What Random Means (And That's a Problem)
Your freshly booted VM just generated SSH keys instantly, and that's not a good sign. Linux entropy pools explained: haveged, virtio-rng, and hardware RNG fixes.
· Updated:8 min read -
Restic vs Borg vs Kopia: Backup Tools for People Who've Lost Data Before
Restic, Borg, and Kopia all deduplicate and encrypt, but differ on backends, compression, and UI. Pick the right backup tool for your Linux home lab.
· Updated:9 min read -
Docker Logging: From "Where Did My Logs Go?" to Centralized Bliss
Learn Docker logging from basics to centralized stacks. Master docker logs, logging drivers, log rotation, Loki+Grafana, and Fluentd setup with practical examples.
· Updated:16 min read -
Self-Hosted Email Is Probably a Bad Idea
Self-hosted email with Mailcow or Stalwart means daily SPF, DKIM, DMARC, and IP blacklist battles. Here's the honest case against running your own mail server.
· Updated:5 min read -
NocoDB: Because Airtable Doesn't Need to Know Your Business
NocoDB self-hosted: connect to existing Postgres/MySQL, build spreadsheet views, auto-generate APIs, and skip the Airtable subscription forever.
· Updated:9 min read -
TCP Keepalives: Why Connections Die and How to Fix It
Long-lived connections dropping randomly? Your OS is killing them. Here's why keepalives matter and how to tune them.
6 min read -
Caddy Advanced: Automatic HTTPS, Plugins, and Config That Doesn't Make You Cry
Advanced Caddy server configuration: wildcard certs, Caddyfile matchers, Docker label integration, rate limiting, forward auth with Authelia, and the JSON API.
· Updated:9 min read -
Auditd & Audit Logging: Know Exactly Who Touched What on Your Server
Set up auditd to log every sudo command and file change on Linux: auditctl rules, ausearch, aureport, and shipping logs to Loki or Elasticsearch for compliance.
· Updated:9 min read
