FTB Skies is a skyblock modpack focusing on exploration, questing, and technological progression. This guide covers server installation and optimization.

Download FTB Skies Server Files

Get the official server files for FTB Skies:

Download Sources:

Official FTB: feed-the-beast.com
CurseForge: Search for "FTB Skies" in modpacks
ATLauncher: Available in modpack list

Server Requirements:

Minecraft Version: 1.19.2
Forge Version: 43.2.0 or higher
Java Version: Java 17 (required)
RAM: Minimum 6GB, recommended 8-10GB
Storage: 5-10GB for modpack + worlds

Extract and Set Up Server Files

Prepare the server environment:

Create server directory: Make a new folder for FTB Skies
Extract files: Unzip the server pack to your directory
Verify contents: Check for modpack files and scripts
Install Java 17: Ensure correct Java version is available
Set permissions: Make startup scripts executable (Linux/Mac)

Expected server structure:

ftb-skies-server/
├── mods/                    # Modpack mods (200+ mods)
├── config/                  # Configuration files
├── scripts/                 # CraftTweaker scripts
├── defaultconfigs/          # Default configurations
├── kubejs/                  # KubeJS scripts
├── start.sh                 # Linux/Mac startup
├── start.bat               # Windows startup
├── forge-installer.jar     # Forge installer
└── server.properties       # Server configuration

Install Forge Server

Set up the Forge server for FTB Skies:

Run Forge installer: Execute the included installer
Accept EULA: Edit eula.txt and set eula=true
First startup: Run server once to generate initial files
Stop server: Allow it to fully initialize
Verify installation: Check that forge-server.jar was created

Forge installation command:

# Install Forge server
java -jar forge-*-installer.jar --installServer

# First startup (will generate world and stop)
java -Xms6G -Xmx8G -jar forge-*-server.jar nogui

Configure Server Properties

Optimize server settings for FTB Skies:

Essential server.properties Settings:

# Basic settings
level-name=world
gamemode=survival
difficulty=normal
hardcore=false

# World generation (skyblock)
level-type=skylands
generate-structures=true
level-seed=

# Performance settings
view-distance=10
simulation-distance=6
max-players=20
spawn-protection=16

# Network optimization
network-compression-threshold=256
max-packet-rate=500

FTB Skies World Configuration:

Uses custom skyblock world generation
Includes FTB Chunks for chunk claiming
Features FTB Quests progression system
Integrated FTB Teams for multiplayer cooperation

Verify Mod Installation

Ensure all FTB Skies mods are working correctly:

Key Mods to Verify:

FTB Quests: Quest progression system
FTB Chunks: Chunk claiming and loading
Ex Nihilo: Skyblock resource generation
Applied Energistics 2: Storage and automation
Thermal Expansion: Tech progression
Botania: Magic and nature automation

Startup Verification:

Start server and monitor console output
Check for mod loading errors
Verify no missing dependencies
Join server and check mod functionality
Test quest book access (/ftbquests open_book)

FTB Skies contains 200+ mods. Server startup may take 5-10 minutes depending on hardware. Be patient during first startup.

Configure Memory Settings

Optimize JVM settings for FTB Skies performance:

Recommended JVM Arguments:

# start.sh/start.bat optimized arguments
java -Xms6G -Xmx8G \
-XX:+UseG1GC \
-XX:+ParallelRefProcEnabled \
-XX:MaxGCPauseMillis=200 \
-XX:+UnlockExperimentalVMOptions \
-XX:+DisableExplicitGC \
-XX:+AlwaysPreTouch \
-XX:G1NewSizePercent=30 \
-XX:G1MaxNewSizePercent=40 \
-XX:G1HeapRegionSize=8M \
-XX:G1ReservePercent=20 \
-XX:G1HeapWastePercent=5 \
-XX:G1MixedGCCountTarget=4 \
-XX:InitiatingHeapOccupancyPercent=15 \
-XX:G1MixedGCLiveThresholdPercent=90 \
-XX:G1RSetUpdatingPauseTimePercent=5 \
-XX:SurvivorRatio=32 \
-XX:+PerfDisableSharedMem \
-XX:MaxTenuringThreshold=1 \
-Dfml.readTimeout=180 \
-jar forge-*-server.jar nogui

Memory Requirements by Player Count:

1-5 players: 6-8GB RAM
6-15 players: 8-10GB RAM
16-25 players: 10-12GB RAM
25+ players: 12GB+ RAM

Set Up Player Teams

Configure FTB Teams for multiplayer cooperation:

FTB Teams Features:

Shared progression and resources
Team-based chunk claiming
Collaborative quest completion
Shared FTB Money economy

Team Management Commands:

# Player commands
/ftbteams create TeamName    # Create new team
/ftbteams invite PlayerName  # Invite player to team
/ftbteams accept            # Accept team invitation
/ftbteams leave             # Leave current team
/ftbteams gui               # Open team management GUI

# Admin commands
/ftbteams admin info TeamName     # Get team information
/ftbteams admin delete TeamName   # Delete a team

Configure FTB Chunks

Set up chunk claiming and loading system:

Chunk System Configuration:

# config/ftbchunks/ftbchunks-server.toml
[chunks]
max_claimed_chunks = 500
max_force_loaded_chunks = 25
chunk_load_offline = true

[claiming]
claim_cost = 0
force_load_cost = 1000

[protection]
block_edit_mode = "ALLIES"
block_interact_mode = "ALLIES"

Chunk Commands:

# Chunk claiming
/ftbchunks admin claim     # Claim current chunk
/ftbchunks admin unclaim   # Unclaim current chunk
/ftbchunks admin load      # Force load chunk
/ftbchunks admin unload    # Unload chunk

# Chunk map
/ftbchunks admin map       # Open chunk map interface

Test and Optimize Performance

Verify server performance and make final adjustments:

Performance testing: Monitor TPS with /forge tps
Quest functionality: Test quest book and progression
Mod interactions: Verify cross-mod recipes work
Chunk loading: Test claimed chunk persistence
Memory monitoring: Watch for memory leaks
Player limits: Test with expected player count

Performance monitoring commands:

/forge tps              # Check server TPS
/ftbchunks admin list    # List claimed chunks
/ftbquests admin reset   # Reset quest progress (if needed)
/memory                  # Check memory usage (if available)

Your FTB Skies server is now ready! Players can start their skyblock adventure with quests, technology progression, and team-based gameplay. Monitor performance as players advance through the modpack.

FTB Skies Server Installation Guide