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Minecraft Server (Java)

Minecraft dedicated server for Java platform hosts a world for multiplayer game. Players can join the server using the Java client on Desktops.

Not yet tested games Based on TrueNAS app v1.15.29 (Minecraft Server (Java) 2026.9.2-java21)
Project website TrueNAS app source Script on GitHub Report a problem
  1. 1
    Copy the script below
  2. 2
    In HexOS, open Apps, find Minecraft Server (Java) and choose Custom Install
  3. 3
    Paste, then press Install — full guide with screenshots
minecraft.json
Download 
1{
12  "version": 5,
23  "script": {
4    "version": "0.1.0",
5    "changeLog": "Auto-generated draft from TrueNAS minecraft 1.15.29"
6  },
7  "requirements": {
38    "locations": ["ApplicationsPerformance"],
49    "specifications": ["2CORE"],
510    "permissions": ["READ_WRITE_LOCATIONS"],
611    "ports": [25535, 25575]
12  },
713  "ensure_directories_exists": [
14    {"path": "$LOCATION(ApplicationsPerformance)"},
15    {"path": "$LOCATION(ApplicationsPerformance)/minecraft"},
16    {
17      "path": "$LOCATION(ApplicationsPerformance)/minecraft/data",
18      "snapshot": {"id": "data"}
19    }
20  ],
21  "app_values": {
22    "storage": {
823      "data": "$HOST_PATH($LOCATION(ApplicationsPerformance)/minecraft/data)"
24    },
25    "network": {
926      "server_port": {"bind_mode": "published", "port_number": 25535},
1027      "rcon_port": {"bind_mode": "published", "port_number": 25575}
28    },
1129    "resources": {"limits": {"cpus": 2, "memory": "$MEMORY(10%, 4096)"}}
30  }
31}

What this script does

Hover or tap a box to see the lines it explains.

  1. Script format

    Tells HexOS this is a version 5 install script, so it knows how to read the rest.

    Line 2

  2. Script revision

    This copy of the script is revision 0.1.0. Latest change: “Auto-generated draft from TrueNAS minecraft 1.15.29”.

    Lines 3–6

  3. Storage locations it needs

    The app uses these HexOS storage locations: App storage (fast). If one isn't set up yet, HexOS will ask you to pick a place for it.

    Line 8

  4. Minimum hardware

    Recommended minimum: 2 CPU cores.

    Line 9

  5. Permission to use your folders

    Allows the app to read and write files inside the storage locations listed above — and nowhere else.

    Line 10

  6. Network ports

    The app needs ports 25535 and 25575 to be free on your server. A port is like an apartment number for your server's address.

    Line 11

  7. Folders created on install

    Creates the folders the app needs before it starts: App storage (fast) › minecraft and App storage (fast) › minecraft › data. Folders marked “snapshot” are included in HexOS snapshots, so you can roll them back.

    Lines 13–20

  8. Where the app's main data is saved

    Where the app's main data is saved on your server: App storage (fast) › minecraft › data.

    Line 23

  9. Server port: 25535

    Publishes the app's server port as 25535.

    Line 26

  10. Rcon port: 25575

    Publishes the app's rcon port as 25575.

    Line 27

  11. Resource limits

    Caps how much of your server the app can use: 2 CPU cores and 10% of your server's memory, but never more than 4 GB. This keeps one busy app from slowing everything else down.

    Line 29