Fluentd

Let’s get started with Fluentd! Fluentd is a fully free and fully open-source log collector that instantly enables you to have a ‘Log Everything’ architecture with 125+ types of systems.Fluentd treats logs as JSON, a popular machine-readable format. It is written primarily in C with a thin-Ruby wrapper that gives users flexibility.Fluentd’s performance has been proven in the field: its largest user currently collects logs from 5000+ servers, 5 TB of daily data, handling 50,000 msgs/sec at peak time.