SkyFactory 42026-10-10 · 7 min read

How to Host a SkyFactory 4 Server

Hosting SkyFactory 4 cleanly is less about some hidden command and more about doing the obvious things in the right order: enough RAM, a proper modpack flow, a clean first boot and backups before anyone pushes their automated island further than it's been tested.

1

Start with 5 GB unless this is a very small server — SkyFactory 4's own recommended floor.

2

Use a proper modpack import flow instead of guessing from a client export.

3

Watch the first boot logs until the server finishes loading on Forge 1.12.2 and the starter island generates cleanly.

4

Invite players only after the first clean startup.

5

Take a backup before world imports, updates or config changes — rebuilding an automated island from scratch is a bad night.

Use a cleaner SkyFactory 4 path

CoalHost is built around modpack hosting, which makes SkyFactory 4 much less annoying to launch correctly.

Deploy SkyFactory 4 now →