Server Redstone Block

The block is crafted from a regular redstone block and a lever. It outputs 15 power in its default state, and server administrators can switch it to 1 power or 0 power to signal that a shutdown is coming. Contraptions that react to those power states can finish their work and settle before the server stops, which avoids the broken machines that restarts often leave behind, such as minecart-based and flying machines.

The block is meant for scheduled restarts. Server operators are advised to place automation that issues a warning about five minutes before a restart, then another roughly one to two minutes before, so contraptions have time to shut down gracefully. The block starts in its on state each time the server boots. Changing it requires permission level 4, and a player who uses the block sees the same behavior as a normal redstone block.

Fabric API is required on Fabric. The mod runs on client and server, so both the server and every player install it, and the server must be set up to trigger the state changes. It is open source under the GNU General Public License v3.0 or later, and files are published for Fabric, Forge, NeoForge and Quilt, covering 1.18.2 – 1.21.4 across ten release versions.