Riemann::Cassandra

Gem for sending Cassandra metrics to Riemann. To use it you will need an JMX enabled Cassandra and JRuby.

Metrics

• Throughput (writes|reads)
• Latency (writes|reads)
• Key cache hit rate
• Timeout exceptions (writes|reads)
• Unavailable exceptions (writes|reads)
• (TODO) Load
• (TODO) Total disk space used
• (TODO) Completed compaction tasks
• (TODO) Pending compaction tasks
• (TODO) ParNew garbage collections (count|time)
• (TODO) CMS garbage collections (count|time)
• (TODO) Exceptions
• (TODO) Pending tasks (per stage)
• (TODO) Currently blocked tasks

More:

• https://www.datadoghq.com/blog/how-to-monitor-cassandra-performance-metrics/
• https://www.datadoghq.com/blog/how-to-collect-cassandra-metrics/

Installation

1. Install JRuby
2. Run $ gem install riemann-cassandra

Usage

riemann-cassandra --host my.riemann.server --cassandra_jmx_host my.cassandra.server --cassandra_jmx_port 7199

License

The gem is available as open source under the terms of the MIT License.