Reaper: Easy Repair Management for Apache Cassandra

Reaper is a centralized, stateful, and highly configurable tool for running Apache Cassandra repairs for multi-site clusters.

Why Use Reaper?

Instead of manually managing crontabs and nodetool commands, Reaper provides:

Centralized Management: One place to manage repairs across all your Cassandra clusters
Intelligent Coordination: Prevents overlapping repairs that could impact cluster performance
Fault Tolerance: Built-in retry logic and state management for reliable repair execution
Granular Control: Schedule repairs at keyspace, table, or even token range level
Multi-Site Awareness: Coordinate repairs across datacenters intelligently

🔧 Intelligent Scheduling: Automatically schedules repairs to avoid putting too much load on your cluster
📊 Web Interface: Simple and intuitive web UI to schedule repairs as granularly as needed
💾 Multi-Backend Support: Store Reaper’s data in Cassandra itself for fault tolerance
🌍 Multi-Datacenter: Built for multi-site clusters with cross-datacenter repair coordination
📈 Monitoring & Metrics: Comprehensive metrics and monitoring integration
🔌 REST API: Full REST API for programmatic control and integration

docker run -p 8080:8080 thelastpickle/cassandra-reaper:latest

Clone the repository: git clone https://github.com/thelastpickle/cassandra-reaper.git
Build: mvn clean package
Run: java -jar target/cassandra-reaper-*.jar server src/main/resources/cassandra-reaper.yaml

Explore the documentation to learn how to:

Reaper is developed and maintained by The Last Pickle and the open source community.