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How-to guides
Problem-oriented procedures. Each guide assumes you already know the platform basics and need a correct sequence under time pressure.
| Guide | When to use |
|---|---|
| Recover from a full outage | Host unreachable or everything down |
| Recover Nextcloud | cloud.cadenceworks.tech unhealthy |
| Restore Nextcloud PostgreSQL data | DB corruption / rollback |
| Recover n8n | Workflows UI/API down |
| Recover Radicale | CalDAV/CardDAV failures |
| Recover HeyPuter | puterN desktop 502 / crash loop |
| Recover Caddy | TLS or reverse proxy down |
| Recover host PostgreSQL | postgresql@16-main down |
| Respond to a security incident | Suspected break-in / abuse |
| Apply system updates | Patching Ubuntu |
| Update Docker containers | Planned image bumps |
| Change Caddy configuration | New vhost or proxy tweak |
| Back up with restic | Snapshot critical paths |
| Rotate SSH keys | Key loss, offboarding, hygiene |
| Perform routine maintenance checks | Daily/weekly operator pass |
Facts (ports, paths) live in Reference. Design background lives in Explanation.