SpringBoot Application & Istio route Practice

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将SpringBoot应用服务部署到Istio构建service-mesh, 并做一些路由实践

理论参考 https://istio.io/latest/zh/docs/concepts/traffic-management/

环境准备

docker & minikube & istio & jdk1.8 & maven

Getting Started

0. 环境准备

• minikube安装参考 https://minikube.sigs.k8s.io/docs/start/
• istio安装参考https://istio.io/latest/zh/docs/setup/install/istioctl/
• 开启istio sidecar自动注入(将k8s default命名空间标记为 istio-injection=enabled)

kubectl label namespace default istio-injection=enabled --overwrite

• clone

git clone https://github.com/wangyy2113/spring-istio-route-demo.git
cd spring-istio-route-demo

1. 启动minikube

minikube start

2. start demo

sh bootstrap.sh

3. 开启minikube tunnel便于外部请求访问服务

minikube tunnel

4. 检查服务运行状态, READY=2/2, STATUS=Running

kubectl get pod|grep istio-route-demo

5. HTTP请求路由验证

发送http请求访问gateway，gateway会将请求转发到client, client再构造HTTP请求访问server(server有两个版本server-v1 & server-v2)

curl '127.0.0.1:80/greet/http?featureTag=v2'
curl '127.0.0.1:80/greet/http?featureTag=v1'
curl '127.0.0.1:80/greet/http?featureTag=v3'
curl '127.0.0.1:80/greet/http?featureTag=v4'

• featureTag=v2的请求会打到server-v2, 其余的都会打到server-v1
• 即curl '127.0.0.1:80/greet/http?featureTag=v2' 会得到Response "Client receive Server msg: Http Greeting from server-v2"
• 其他请求会得到Response "Client receive Server msg: Http Greeting from server-v1"

6. 关闭服务

sh stopall.sh

对于minikube tunnel 命令行 control + C 即可

关闭minikube

minikube stop