To update the mappings while running, use `docker exec mc-router /mc-router --mapping <new-mapping string>`
## Before Starting a Server
Check the following server.properties values:
| Parameter | Value | Why |
|:--:|:--:|:--:|
| `allow-flight` | true | Many modded features trigger Minecraft's flight detection. Allow flight to prevent wrongful bans.
| `enable-rcon` | true | This overrides any rcon settings in the compose file. Enable rcon to interact with the server's command line |
| `max-tick-time` | 600 normally, 120000 when pre-genning chunks | Increase the max tick time to prevent the hang watchdog from killing the server when pregenning chunks |
| `rcon.password` | `thanksitzg` | Set a simple password to protect the rcon port |
| `rcon.port` | `25575` | Set this to what itzg's rcon-cli expects as default |
| `view-distance` | 10 for lightweight servers, 6 for heavy servers | View distance has great impact on server load |
## Pregenerating Chunks
Make sure that the [Chunk Pregenerator](https://www.curseforge.com/minecraft/mc-mods/chunkpregenerator) mod is installed. It is compatible with most Minecraft versions between 1.7.2 and 1.16.5.
To pregen chunks, first connect to the server's RCON CLI. Then, run the following,
`pregen start gen radius Pregen SQUARE 0 0 100`
This should take about half an hour and will generate about 40,000 chunks (2r^2).
For a job closer to 8 hours, run
`pregen start gen radius Pregen SQUARE 0 0 500`
Which will generate about 500,000 chunks.
A Ryzen 7 5800X generates chunks at about 1.35 chunks per tick (27 chunks per second @ 20 TPS).
