© 2020 Build > meshctl wasm init addheader-filter --language rust > meshctl wasm build rust -t webassemblyhub.io/yuval/addheader-rust:v1 ./addheader-filter ABI: Application Binary Interface 13 13 | Copyright © 2020 > meshctl wasm push webassemblyhub.io/yuval/addheader-rust:v1 Build Store 14 | Copyright © 2020 Build Store WASM Artifact Image Specification 15 | Copyright © 2020 Build --deployment-name ratings-add-header --namespace bookinfo --image webassemblyhub.io/yuval/addheader-rust:v1 --cluster mgmt-cluster --labels app=ratings Extension Config Discovery Service EXTERNAL AUTH

● wazero is the only zero dependency WebAssembly runtime written in Go. ● Contribute to Go/TinyGo/Rust ● Using WasmPlugin API to extend Istio ● GitHub: tetratelabs/wazero Istio Security Scanner ● Make

○ 敏捷性：过滤器可以动态加载到正在运行的Envoy进程中，而无需停止或重新编译。 ○ 可维护性：不必更改Envoy自身基础代码库即可扩展其功能。 ○ 多样性：可以将流行的编程语言（例如C/C++和Rust）编译为WASM，因此开发人员可 以选择实现过滤器的编程语言。 ○ 可靠性和隔离性：过滤器会被部署到VM沙箱中，因此与Envoy进程本身是隔离的；即使 当WASM Filter出现问题导致崩溃时，它也不会影响Envoy进程。

curl \ iptables \ iproute2 \ iputils-ping \ knot-dnsutils \ netcat \ tcpdump \ net-tools \ lsof \ linux-tools-generic \ sudo \ ... Tools like tcpdump, sudo, and curl are designed for debugging purposes writer io.Writer) { var err error fmt.Fprintf(writer, "%s\n", url) switch runtime.GOOS { case "linux": err = exec.Command("xdg-open", url).Start() case "windows": err = exec.Command("rundll32", "url git checkout 7353c84b56 cd istio make istioctl ./out/linux_amd64/istioctl version To install Istio via istioctl, run the following command: ./out/linux_amd64/istioctl install --set profile=default --set

known security controls ■ Better isolation (of resources, fault domains etc.) ■ Compatibility (non-Linux, unikernels) ○ Business reasons ■ Legacy applications ■ Deterministic workloads with strong requirements services ○ Enterprise/Workshop applications ○ Hard to lift and shift ● Packaged software ○ Non-Linux ○ unikernels ● Domain specific workloads ○ Network Functions (NFV) #IstioCon Hybrid and Multi

开发Rules Rules。将数据交付给适配器。 定义了一个特定的 Instance 何时调用一个特定的 Handler插件编译和镜像打包 插件的编译 CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build - a -installsuffix cgo -o eventadapter 镜像制作的dockerfile FROM scratch ADD eventadapter

● Dedicated resources for it (the more the better) ● A good in-house knowledge of networking : Linux, Kubernetes and Envoy ● Be patient and resisting the temptations from users to open features too