nginx websocket 的配置

通常，我们在 nginx 上配置 websocket 长连接一般会有如下配置：

   proxy_http_version 1.1;
   proxy_set_header Upgrade "websocket";
   proxy_set_header Connection "Upgrade";

ingress-nginx 的配置

但，ingress-nginx 配置可不是这样，它只需要添加以下 annotations 即可：

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  annotations:
    nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"

线上的配置示例

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# See: https://v1-17.docs.kubernetes.io/docs/concepts/services-networking/ingress/
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: liverpool
  namespace: **live-dev
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/rewrite-target: /
    nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
spec:
  rules:
  - host: dev-gw.**tech.com
    http:
      paths:
      - path: /ws
        backend:
          serviceName: liverpool
          servicePort: 9633

再次申明不需要手动添加以上的配置，详见：https://github.com/kubernetes/ingress-nginx/issues/4771#issuecomment-558279646

可以通过查看 ingress-nginx 自动生成的配置来证明这一点。

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kubectl ingress-nginx conf -n ingress-nginx | less

就是这么神奇，我也是被惊呆了~

kubectl ingress-nginx 命令？

kubectl ingress-nginx 命令不存在？

按如下方式进行安装这个 kubectl plugins

安装 krew https://krew.sigs.k8s.io/docs/user-guide/setup/install/

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(
  set -x; cd "$(mktemp -d)" &&
  curl -fsSLO "https://github.com/kubernetes-sigs/krew/releases/latest/download/krew.tar.gz" &&
  tar zxvf krew.tar.gz &&
  KREW=./krew-"$(uname | tr '[:upper:]' '[:lower:]')_amd64" &&
  "$KREW" install krew
)
export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
kubectl krew

安装 ingress-nginx 这个kubectl-plugins

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kubectl krew install ingress-nginx
kubectl ingress-nginx --help

查看自动生成的配置

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kubectl ingress-nginx conf -n ingress-nginx | less