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网关/Ingress/通过Ingress实现金丝雀发布.md

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+> 本文作者：丁辉
+
+# 通过Ingress实现金丝雀发布
+
+**通过 Ingress 实现基于权重的金丝雀**
+
+部署测试示例 Nginx Deployment v1和v2
+
+1. 部署 v1 版本
+
+   ```bash
+   kubectl apply -f https://gitee.com/offends/Kubernetes/raw/main/File/Yaml/nginx-deployment-v1.yaml
+   ```
+
+2. 部署 v2 版本
+
+   ```bash
+   kubectl apply -f https://gitee.com/offends/Kubernetes/raw/main/File/Yaml/nginx-deployment-v2.yaml
+   ```
+
+3. 创建两个 Service
+
+   ```yaml
+   cat <<EOF | kubectl apply -f -
+   apiVersion: v1
+   kind: Service
+   metadata:
+     name: nginx-deployment-service-1
+     namespace: default
+   spec:
+     selector:
+       app: nginx
+       version: v1
+     ports:
+     - port: 80
+       targetPort: 80
+   ---
+   apiVersion: v1
+   kind: Service
+   metadata:
+     name: nginx-deployment-service-2
+     namespace: default
+   spec:
+     selector:
+       app: nginx
+       version: v2
+     ports:
+     - port: 80
+       targetPort: 80
+   EOF
+   ```
+
+4. 创建 Ingress 资源
+
+   ```yaml
+   cat <<EOF | kubectl apply -f -
+   # 金丝雀 Ingress 对象为 v1 版本
+   apiVersion: networking.k8s.io/v1
+   kind: Ingress
+   metadata:
+     name: nginx-ingress-1
+     namespace: default
+   spec:
+     rules:
+     - host: example.com # 替换为你的域名
+       http:
+         paths:
+         - path: /
+           pathType: Prefix
+           backend:
+             service:
+               name: nginx-deployment-service-1
+               port:
+                 number: 80
+     tls:
+       - hosts:
+         - example.com # 替换为你的域名
+         secretName: example-tls # 替换为你的证书
+   ---
+   # 金丝雀 Ingress 对象为 v2 版本
+   apiVersion: networking.k8s.io/v1
+   kind: Ingress
+   metadata:
+     name: nginx-ingress-2
+     namespace: default
+     annotations:
+       nginx.ingress.kubernetes.io/canary: "true"
+       nginx.ingress.kubernetes.io/canary-weight: "10" # 10%流量到金丝雀
+   spec:
+     rules:
+     - host: example.com # 替换为你的域名
+       http:
+         paths:
+         - path: /
+           pathType: Prefix
+           backend:
+             service:
+               name: nginx-deployment-service-2
+               port:
+                 number: 80
+     tls:
+       - hosts:
+         - example.com # 替换为你的域名
+         secretName: example-tls # 替换为你的证书
+   EOF
+   ```
+
+5. 慢慢调整 Nginx-Ingress-2 流量到 100%，即可完成更新
+