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Cilium - eBPF-based Networking, Security, and Observability
Cilium is an open-source project providing networking, security, and observability for cloud native environments, built upon the revolutionary kernel technology eBPF. It enhances application security and simplifies operations.
Go
Added on 2025年6月1日21,719
Stars3,225
ForksGo
LanguageProject Introduction
Summary
Cilium is a cloud native solution leveraging eBPF to provide API-aware network security, network connectivity, and visibility for containers and Kubernetes workloads.
Problem Solved
Traditional networking and security solutions often lack context about modern application workloads (like containers and microservices), leading to complex configurations, limited visibility, and inadequate security enforcement based solely on IP addresses and ports. Cilium addresses this by providing identity-based security and deep visibility into network flows.
Core Features
Identity-based security
Enforces network policies based on application identities, independent of network addressing.
API-aware security
Provides visibility and policy enforcement at layer 7 (e.g., HTTP, gRPC), understanding application protocols.
Observable networking
Leverages eBPF to provide deep insights into network traffic and performance with tools like Hubble.
Efficient network connectivity
Implements CNI for Kubernetes with high performance and scalability.
Tech Stack
eBPF
Go
Kubernetes
Prometheus
Grafana
使用场景
Cilium is well-suited for cloud native environments running containers and orchestrators like Kubernetes, addressing needs across networking, security, and observability:
Scenario 1: Microservices Security
Details
Implement fine-grained network policies between microservices based on their identity, independent of network topology.
User Value
Enhances application security posture and simplifies policy management in dynamic environments.
Scenario 2: Network Observability
Details
Gain deep insights into network traffic flows, DNS requests, and application protocol visibility using tools like Hubble.
User Value
Faster troubleshooting, performance analysis, and understanding of application communication patterns.
Scenario 3: Secure Multi-Tenancy
Details
Strictly isolate network traffic between different tenants or applications within the same cluster.
User Value
Ensures compliance and prevents unauthorized cross-tenant communication.
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