CervLogger
Block logging, lookup, rollback and restore for NeoForge 1.21.1 servers.
CervLogger records player activity in a local database and lets staff inspect block history, search the logs and roll back grief in seconds — with no client-side installation required. Vanilla and modded clients can join freely.
✨ Features
- 📝 Comprehensive logging — block place/break, explosions, fire, container transactions, signs, buckets, interactions (doors, levers, buttons…), entity kills, chat, commands and login/logout sessions
- 🔍 Inspector mode (
/cl i) — click any block to instantly see who placed, broke or changed it and when - ⏪ Rollback & restore — undo grief filtered by player, time, radius,
action and block types (
/cl rollback u:Player t:2h r:20) - 🗄️ Flexible storage — SQLite works out of the box with zero setup; MySQL supported for larger servers (both drivers bundled)
- 🖥️ Server-side only — nothing to install on clients
📋 Commands
| Command | Description | Permission |
|---|---|---|
/cl inspect (/cl i) |
Toggle the inspector | everyone |
/cl lookup <params> |
Search the logs | op |
/cl rollback <params> |
Roll back changes | op |
/cl restore <params> |
Re-apply rolled back changes | op |
/cl near [radius] |
Lookup around you | op |
/cl structures |
List loaded Create/Sable structures | op |
/cl purge t:<time> |
Delete old log data | op |
Parameters: u:<player> t:<time> r:<radius|#global> a:<action>
b:<blocks> e:<exclude> w:<world> p:<page>
Example: /cl rollback u:Notch t:2h r:20 a:-block
⚙️ Configuration
Everything is created on first run at config/cervlogger/config.properties:
per-category logging toggles, radius limits, page size, extra interact block
IDs, and MySQL credentials if you set storage-type=mysql.
🤝 Compatibility
Rollbacks run on the main server thread — safe alongside c2me, Lithium and other optimization mods. Blocks moving inside Create contraptions or Sable sub-levels bypass standard block events and are not logged while in motion.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as cervlogger-1.0.0.jar — drop this file into the mods folder
- Download size: 15.8 MB
- Download link checked 14 Sept 2026 — working
These come from our own check of the pack file, not from the source page.