Wasm-bpf: Streamlining eBPF Deployment in Cloud Environments with WebAssembly

TL;DR

Wasm-bpf is a lightweight WebAssembly-based runtime that simplifies cross-platform deployment and dynamic plugin management of eBPF programs in cloud environments, reducing overhead and compatibility issues.

Contribution

It introduces Wasm-bpf, a novel WebAssembly runtime that enhances portability, simplifies deployment, and supports dynamic plugin management for eBPF programs in cloud-native settings.

Findings

Wasm-bpf achieves minimal overhead compared to native eBPF.

It enables cross-platform compatibility for eBPF programs.

The system simplifies deployment within containerized cloud environments.

Abstract

The extended Berkeley Packet Filter (eBPF) is extensively utilized for observability and performance analysis in cloud-native environments. However, deploying eBPF programs across a heterogeneous cloud environment presents challenges, including compatibility issues across different kernel versions, operating systems, runtimes, and architectures. Traditional deployment methods, such as standalone containers or tightly integrated core applications, are cumbersome and inefficient, particularly when dynamic plugin management is required. To address these challenges, we introduce Wasm-bpf, a lightweight runtime on WebAssembly and the WebAssembly System Interface (WASI). Leveraging Wasm platform independence and WASI standardized system interface, with enhanced relocation for different architectures, Wasm-bpf ensures cross-platform compatibility for eBPF programs. It simplifies deployment by integrating with container toolchains, allowing eBPF programs to be packaged as Wasm modules that can be easily managed within cloud environments. Additionally, Wasm-bpf supports dynamic plugin management in WebAssembly. Our implementation and evaluation demonstrate that Wasm-bpf introduces minimal overhead compared to native eBPF implementations while simplifying the deployment process.