11 Fluent Bit Examples, Tips & Tricks for Log Forwarding with Couchbase

Couchbase has improved its log forwarding and audit log management capabilities by integrating Fluent Bit, a lightweight, open-source log processor, for both Couchbase Autonomous Operator and on-prem Couchbase Server deployments. Fluent Bit was chosen due to its support for dynamic configurations, industry-standard status, and minimal overhead, making it ideal for Couchbase's needs. The article provides practical advice on using Fluent Bit, including debugging tips, multi-line parsing, filtering techniques, and how to engage with the open-source community for support and advancements. It emphasizes the importance of testing configurations and provides strategies for efficient log processing, such as using the record_modifier filter for optional information, employing aliases for clarity, and leveraging Lua filters for specific tasks like data redaction. The guide also outlines the benefits of separating configuration files for ease of use and testing, and discusses the importance of maintaining consistency in log levels for better integration with tools like Grafana. Lastly, it highlights how Couchbase has adapted Fluent Bit for use with Red Hat OpenShift by building it from source to meet certification requirements.