Ingress-nginx 配置 websocket 支持

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apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: api
  annotations:
    # 配置ingress 使用 nginx
    kubernetes.io/ingress.class: nginx
    # 配置websocket 需要的配置
    nginx.ingress.kubernetes.io/configuration-snippet: |
      proxy_set_header Upgrade "websocket";
      proxy_set_header Connection "Upgrade";
spec:
  rules:
  - host: api.xxx.com
    http:
      # webSocket config
      - path: /middle/(.*)/ws
        pathType: Prefix
        backend:
          service:
            name: prod-xxxxxx
            port:
              number: 80
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kubectl apply -f ingress-name.yaml