## GCN ## 通过Golang + eBPF实现无侵入应用可观测  张海彬 阿里云 应用可观测技术专家  eBPF简介 01 eBPF在云原生场景下的应用 02 微服务可观测的挑战 03 Golang + eBPF实现数据采集 04 构建完整的应用可观测系统 05 ## 第一部分 ## eBPF简介 ## eBPF简介 ## eBPF = extended Berkeley Packet Filter Dynamically program 07af07a8a0036272e9f1cb2f68/p13_1.jpg) 应用性能监控（APM） Kubernetes监控 无法自顶向下端到端串联导致棘手问题频发。 第四部分 ## Golang + eBPF实现数据采集 ## eBPF在可观测领域的优势 ![Image](/uploads/documents/d/0/2/8/d028cc07af07a8a0036272e9f1cb2f68/p15_1

N/A (OS-specific)go [https://golang.org/dl/]1.12.17N/A (OS-specific)dep [https://github.com/golang/dep/]>= v0.4.1curl https://raw space violations Run make to build your changes. This will also run go fmt and error out on any golang formatting errors. See Unit Testing on how to run unit tests. See End-To-End Testing Framework run the end to end integration tests ## Unit Testing Cilium uses the standard go test [https://golang.org/pkg/testing/] framework in combination with gocheck [http://labix.org/gocheck] for richer testing

Development Setup Requirements Vagrant Setup Local Development in Vagrant Box Making Changes Add/update a golang dependency Debugging Building Container Images Developer images Official release images Update cilium-builder Blog posts Books Talks Further Documents API Reference Introduction How to access the API CLI Client Golang Package Compatibility Guarantees API Reference Reference Command Cheatsheet Command utilities: Command / where is a value that can be parsed with ParseDuration() [https://golang.org/pkg/time/#ParseDuration]. The supported units are: ns, us, ms, s, m, h. Examples: rate-limit:10/2m

Development Setup Requirements Vagrant Setup Local Development in Vagrant Box Making Changes Add/update a golang dependency Optional: Docker and IPv6 Debugging Building Container Images Developer images Official Blog posts Books Talks Further Documents API Reference Introduction How to access the API CLI Client Golang Package Compatibility Guarantees API Reference Hubble internals Hubble Architecture Hubble server / where is a value that can be parsed with ParseDuration() [https://golang.org/pkg/time/#ParseDuration]. The supported units are: ns, us, ms, s, m, h. Examples: rate-limit:10/2m

Development Setup Requirements Vagrant Setup Local Development in Vagrant Box Making Changes Add/update a golang dependency Add/update a new Kubernetes version Optional: Docker and IPv6 Debugging Building Container Blog posts Books Talks Further Documents API Reference Introduction How to access the API CLI Client Golang Package Compatibility Guarantees API Reference Hubble internals Hubble Architecture Hubble server / where is a value that can be parsed with ParseDuration() [https://golang.org/pkg/time/#ParseDuration]. The supported units are: ns, us, ms, s, m, h. Examples: rate-limit:10/2m

Development Setup Requirements Vagrant Setup Local Development in Vagrant Box Making Changes Add/update a golang dependency Add/update a new Kubernetes version Optional: Docker and IPv6 Debugging Building Container Blog posts Books Talks Further Documents API Reference Introduction How to access the API CLI Client Golang Package Compatibility Guarantees API Reference Internals Hubble internals Hubble Architecture Cilium / where is a value that can be parsed with ParseDuration() [https://golang.org/pkg/time/#ParseDuration]. The supported units are: ns, us, ms, s, m, h. Examples: rate-limit:10/2m

Vagrant Setup ■ Local Development in Vagrant Box ■ Making Changes ■ Add/update a golang dependency ■ Add/update a new Kubernetes version ■ Optional: Docker and IPv6 ■ ■ Further Documents ## • API Reference Introduction How to access the API ■ CLI Client ■ Golang Package • Compatibility Guarantees ○ API Reference • Internals ○ Hubble internals ■ Hubble / where is a value that can be parsed with ParseDuration(). [https://golang.org/pkg/time/#ParseDuration]. The supported units are: ns, us, ms, s, m, h. ## Examples: • rate-limit:10/2m

(OS-specific)| |go|1.12.17|N/A (OS-specific)| |dep|>= v0.4.1|curl https://raw.githubusercontent.com/golang/dep/master/install.sh \| sh| |go-bindata|a0ff2567cfb|go get -u github.com/cilium/go-bindata/...| space violations 6. Run make to build your changes. This will also run go fmt and error out on any golang formatting errors. 7. See Unit Testing on how to run unit tests. 8. See End-To-End Testing Framework run the end to end integration tests ## Unit Testing Cilium uses the standard go test [https://golang.org/pkg/testing/] framework in combination with gocheck [http://labix.org/gocheck] for richer testing

header: $ dpkg -s rclone | grep Built-Using Built-Using: go-md2man-v2 (= 2.0.1+ds1-1), golang-1.18 (= 1.18-1ubuntu1), golang-bazil-fuse (= 0.0~git20160811.0.371fbbd-3), ... Ok, this time we have a lot of information line). If we look at the full output carefully, we can see that rclone was built statically using the golang-go.crypto package, and documentation about that package and its crypto implementations is what we the Build-Depends list shows us the golang-golang-x-crypto-dev build dependency, whose source package is golang-go.crypto as expected: $ apt-cache show golang-golang-x-crypto-dev | grep ^Source: ## NOTE

6/8/c2685e538663cd9a7d78ad4c88be227b/p27_1.jpg) eBPF now has a variety of libraries written in Golang, Rust, C++, and others that help loading, compiling, and debugging eBPF programs across both user