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Fluent Bit: Fast and Lightweight Logs, Metrics and Traces processor for Linux, BSD, OSX and Windows
A high-performance, lightweight data collector and processor designed for logs, metrics, and traces, specifically optimized for low resource consumption. It runs on Linux, BSD, macOS, and Windows, making it ideal for distributed environments, cloud-native setups, and edge computing.
C
Added on 2025年6月28日7,003
Stars1,715
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LanguageProject Introduction
Summary
Fluent Bit is an open-source data processor and forwarder for logs, metrics and traces, compatible with the Fluentd ecosystem. It's designed to be fast, lightweight, and highly scalable, making it an excellent choice for cloud-native, edge, and embedded systems.
Problem Solved
Collecting, processing, and routing observability data (logs, metrics, traces) from diverse sources efficiently and reliably, especially in environments where resource usage is critical.
Core Features
Extremely Lightweight
Designed from the ground up for minimal CPU and memory usage, suitable for resource-constrained environments.
Pluggable Architecture
Supports a wide variety of inputs (e.g., files, systemd, Docker, Kubernetes), filters (e.g., parsing, enriching), and outputs (e.g., Elasticsearch, Kafka, S3, Stdout) via a flexible plugin system.
Data Reliability
Guarantees data delivery even under network issues or backend unavailability through robust buffering and retry mechanisms.
Unified Observability Data Collection
Native support for collecting logs, metrics, and traces (via OpenTelemetry integration), providing a unified agent for observability data.
Tech Stack
C
Linux
BSD
macOS
Windows
Plugin Architecture
Use Cases
Fluent Bit is widely used across various industries and environments for its efficiency and versatility in handling observability data.
Cloud-Native / Kubernetes Logging & Monitoring
Details
Deploy Fluent Bit as a DaemonSet in Kubernetes clusters to collect container logs and node metrics, forwarding them to a centralized logging or monitoring system.
User Value
Provides a standard, low-overhead way to collect all container logs and node metrics across the cluster.
Edge Computing and IoT Data Collection
Details
Install Fluent Bit on edge devices or gateways to collect system logs, application logs, and custom metrics, securely forwarding them to a remote server or cloud service.
User Value
Enables reliable data collection from potentially unstable or resource-limited edge environments.
Centralized Server Log Management
Details
Consolidate log collection from various Windows and Linux servers into a single stream for centralized analysis, filtering sensitive data before sending.
User Value
Simplifies log aggregation and management across heterogeneous server infrastructures.
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