NGINX 入口控制器在 60 秒后超时请求

Question

当一个请求需要超过 60 秒来响应时，入口控制器似乎会反弹

从我可以看到我们的 NGINX 入口控制器在处理一个请求超过 60 秒后返回 504 给客户端。我可以从 NGINX 日志中看到这一点：

2019/01/25 09:54:15 [error] 2878#2878: *4031130 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 10.244.0.1, server: myapplication.com, request: "POST /api/text HTTP/1.1", upstream: "http://10.244.0.39:45606/api/text", host: "myapplication.com"
10.244.0.1 - [10.244.0.1] - - [25/Jan/2019:09:54:15 +0000] "POST /api/text HTTP/1.1" 504 167 "-" "PostmanRuntime/7.1.6" 2940 60.002 [default-myapplication-service-80] 10.244.0.39:45606 0 60.000 504 bdc1e0571e34bf1223e6ed4f7c60e19d

第二个日志项显示上游响应时间和请求时间均为 60 秒（请参阅此处的 NGINX 日志格式）

但是我在入口配置中将所有超时值指定为 3 分钟：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: aks-ingress
  annotations:
    kubernetes.io/ingress.class: nginx
    certmanager.k8s.io/cluster-issuer: letsencrypt
    nginx.ingress.kubernetes.io/rewrite-target: /
    nginx.ingress.kubernetes.io/send_timeout: "3m"
    nginx.ingress.kubernetes.io/proxy-connect-timeout: "3m"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "3m"
    nginx.ingress.kubernetes.io/proxy-send-timeout: "3m"
spec:
  tls:
  - hosts:
    - myapplication.com
    secretName: tls-secret
  rules:
  - host: myapplication.com
    http:
      paths:
      - path: /
        backend:
          serviceName: myapplication-service
          servicePort: 80

我错过了什么？

我在 Azure (AKS) 上使用 nginx-ingress-1.1.0 和 k8s 1.9.11。

Answer 1

该问题已通过为这些注释提供的整数值（以秒为单位）得到解决：

nginx.ingress.kubernetes.io/proxy-connect-timeout: "180"
nginx.ingress.kubernetes.io/proxy-read-timeout: "180"
nginx.ingress.kubernetes.io/proxy-send-timeout: "180"

似乎NGINX 入口控制器的这种变体需要这样。