阿里云|通过 Ingress 进行灰度发布容器|docker|kubernetes

1、部署 Deployment V1 应用创建如下 YAML 文件(app-v1.yaml)

apiVersion: v1 kind: Service metadata: name: my-app-v1 labels: app: my-app spec: ports: - name: http port: 80 targetPort: http selector: app: my-app version: v1.0.0 --- apiVersion: apps/v1 kind: Deployment metadata: name: my-app-v1 labels: app: my-app spec: replicas: 1 selector: matchLabels: app: my-app version: v1.0.0 template: metadata: labels: app: my-app version: v1.0.0 annotations: prometheus.io/scrape: "true" prometheus.io/port: "9101" spec: containers: - name: my-app image: registry.cn-hangzhou.aliyuncs.com/containerdemo/containersol-k8s-deployment-strategies ports: - name: http containerPort: 8080 - name: probe containerPort: 8086 env: - name: VERSION value: v1.0.0 livenessProbe: httpGet: path: /live port: probe initialDelaySeconds: 5 periodSeconds: 5 readinessProbe: httpGet: path: /ready port: probe periodSeconds: 5

执行如下命令部署 Deployement V1 应用：

kubectl apply -f app-v1.yaml

创建如下 Ingress YAML文件(ingress-v1.yaml)

apiVersion: extensions/v1beta1 kind: Ingress metadata: name: my-app labels: app: my-app spec: rules: - host: my-app-22e6541b324bd1dfe04a48beb40046ea.ca2ef983cc3a64042a32c1a423d32021e.cn-shanghai.alicontainer.com http: paths: - backend: serviceName: my-app-v1 servicePort: 80 path: /

执行如下命令部署 Ingress 资源

kubectl apply -f ingress-v1.yaml

部署完成后通过 curl 命令进行测试：

curl my-app-22e6541b324bd1dfe04a48beb40046ea.ca2ef983cc3a64042a32c1a423d32021e.cn-shanghai.alicontainer.com

会看到如下返回：

Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0

2、部署 Deployment V2 应用创建如下 YAML 文件(app-v2.yaml)

apiVersion: v1 kind: Service metadata: name: my-app-v2 labels: app: my-app spec: ports: - name: http port: 80 targetPort: http selector: app: my-app version: v2.0.0 --- apiVersion: apps/v1 kind: Deployment metadata: name: my-app-v2 labels: app: my-app spec: replicas: 1 selector: matchLabels: app: my-app version: v2.0.0 template: metadata: labels: app: my-app version: v2.0.0 annotations: prometheus.io/scrape: "true" prometheus.io/port: "9101" spec: containers: - name: my-app image: registry.cn-hangzhou.aliyuncs.com/containerdemo/containersol-k8s-deployment-strategies ports: - name: http containerPort: 8080 - name: probe containerPort: 8086 env: - name: VERSION value: v2.0.0 livenessProbe: httpGet: path: /live port: probe initialDelaySeconds: 5 periodSeconds: 5 readinessProbe: httpGet: path: /ready port: probe periodSeconds: 5

执行如下命令部署 Deployement V2 应用：

kubectl apply -f app-v2.yaml

3、按照权重策略灰度到 Deployment V2 应用创建如下 Ingress YAML文件(ingress-v2-canary-weigth.yaml)

apiVersion: extensions/v1beta1 kind: Ingress metadata: name: my-app-canary labels: app: my-app annotations: # Enable canary and send 10% of traffic to version 2 nginx.ingress.kubernetes.io/canary: "true" nginx.ingress.kubernetes.io/canary-weight: "10" spec: rules: - host: my-app-22e6541b324bd1dfe04a48beb40046ea.ca2ef983cc3a64042a32c1a423d32021e.cn-shanghai.alicontainer.com http: paths: - backend: serviceName: my-app-v2 servicePort: 80 path: /

执行如下命令部署 Ingress 资源

kubectl apply -f ingress-v2-canary-weigth.yaml

执行如下命令进行测试：

while sleep 0.1; do curl my-app-22e6541b324bd1dfe04a48beb40046ea.ca2ef983cc3a64042a32c1a423d32021e.cn-shanghai.alicontainer.com; done

测试结果如下：

Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0 Host: my-app-v2-67c69b8857-g82gr, Version: v2.0.0 Host: my-app-v1-68bfcbb7cf-w4rpg, Version: v1.0.0

4、按照 Header 策略灰度到 Deployment V2 应用创建如下 Ingress YAML文件(ingress-v2-canary-header.yaml)

apiVersion: extensions/v1beta1 kind: Ingress metadata: name: my-app-canary labels: app: my-app annotations: # Enable canary and send traffic with headder x-app-canary to version 2 nginx.ingress.kubernetes.io/canary: "true" nginx.ingress.kubernetes.io/canary-by-header: "x-app-canary" nginx.ingress.kubernetes.io/canary-by-header-value: "true" spec: rules: - host: my-app-22e6541b324bd1dfe04a48beb40046ea.ca2ef983cc3a64042a32c1a423d32021e.cn-shanghai.alicontainer.com http: paths: - backend: serviceName: my-app-v2 servicePort: 80

执行如下命令部署 Ingress 资源