home-ops-public

メンテナンス時間帯設計 / Maintenance Window Pattern

Public sanitized template for choosing safe maintenance windows in a home-lab.

自宅サーバーやNASを安全に更新するための、公開可能な時間帯設計テンプレートです。

ルール / Rule

Do not pick a maintenance window by intuition. First inventory scheduled work.

勘で時間を決めず、先に定期ジョブを棚卸しします。

確認 / Check

• cron / systemd timers
• Docker backup containers
• Home Assistant automatic backups
• external monitoring heartbeat
• cloud sync jobs
• router or VPN update jobs
• family usage patterns

避けること / Avoid

• backup windows
• VPN/Tailscale update windows
• monitoring heartbeat transition windows
• just before daily reports
• times when no one can recover manually

よい時間帯の形 / Good Window Shape

A good window has:

• recent backup before the change
• no backup job starting soon
• enough time before the next scheduled job
• a human available for rollback
• clear owner approval for reboot

承認テンプレート / Approval Template

Can I start maintenance at <time>?

Expected impact:
- ...

Avoided windows:
- backup: ...
- monitoring: ...
- VPN/network: ...

Preflight:
- backup: ok
- disk/load: ok
- containers: ok
- remote access: ok

Rollback:
- ...