caoyadong-ops

Incremental rsync snapshots, restic wrapper, MySQL/Postgres dump rotation, restore runbook.

Nginx reverse proxy + SSL templates, Certbot notes and a Python site generator.

Python TLS certificate expiry checker: CSV, JSON, and Nagios exit codes, stdlib only.

Server racking and delivery acceptance checklist: dock to rack, with nothing left unrecorded.

Postmortem and change request templates with rollback steps, ready to copy into your wiki.

Data center UPS/power inspection forms and a capacity register for facilities rounds.

Kubernetes troubleshooting cheatsheet: the first ten minutes of an incident, Pending to PVC.

Four importable n8n workflows: disk, TLS expiry, HTTP checks and a daily digest.

Linux hardening checklist plus a read-only audit script that scores a host without changing it.

Shift handover report auto-generator template: written-down handovers, with tests included.

Bilingual 40-item VPS go-live checklist, bootstrap plan script and symlink-based release rollback.

Eight complete nginx.conf files: microcache, rate tiers, PHP-FPM, SPA+API, maintenance, canary, with EN/ZH notes.

Thirty original Prometheus alerts for five exporters, with bilingual annotations, runbooks, and promtool tests.

Three bilingual symptom-to-fix sheets for systemd, networking and disk incidents, plus a lookup script.

n8n workflow plus a stdlib status agent: Telegram /status /disk /ack /help for on-call.