How to Host a Diosesmon Official PRO Server
Diosesmon Official PRO is the official companion modpack for the Diosesmon network — a feature-packed Cobblemon build for Fabric 1.21.1 that ties into that network's own ecosystem rather than standing alone as a generic Cobblemon pack. Getting it running cleanly means sizing RAM correctly, importing the pack properly instead of guessing from a client export, and confirming the first boot actually finishes before anyone logs in.
Diosesmon Official PRO's own recommended RAM floor is 8 GB — start your Fabric 1.21.1 server there rather than guessing from a generic Cobblemon pack's lower requirement; the network's extra companion content adds real memory overhead beyond vanilla Cobblemon.
Import the modpack through a proper CurseForge/Modrinth import flow rather than copying mods out of a client install — Diosesmon Official PRO ships specific companion-network configs and datapacks that a manual client export will often miss or scramble.
Watch the server logs through the full first boot: Fabric needs to finish loading Cobblemon's species and move data plus the Diosesmon network's companion systems before the world is actually stable, so don't judge the server ready until the log settles and TPS holds steady.
Only open the server to players after that first boot has completed cleanly with no mod-loading errors — inviting people in mid-load on a Cobblemon-based pack risks corrupted spawn data and broken starter encounters.
Take a backup before importing an existing world, updating the Fabric loader, or changing any Cobblemon or network config — a bad import on this pack can wipe captured Pokémon-style progress and companion-network unlocks that took hours to build.
Use a cleaner Diosesmon Official PRO path
CoalHost is built around modpack hosting, which makes Diosesmon Official PRO much less annoying to launch correctly.
Deploy Diosesmon Official PRO now →