1.首先优化ingress-controller
通过 Helm 安装 Nginx Ingress 的默认关联配置映射实例名称为 nginx-ingress-controller，用户可以通过修改资源对象 Deployment/DaemonSet 实例 nginx-ingress-controller 中的参数 --configmap 自定义关联配置映射实例的名称。
于是参考nginx-ingress-controller的ConfigMap配置方法，这里配置了下：
$ kubectl -n kube-system edit configmap nginx-configuration ... apiVersion: v1 kind: ConfigMap data: allow-backend-server-header: ‘true‘ enable-underscores-in-headers: ‘true‘ generate-request-id: ‘true‘ ignore-invalid-headers: ‘true‘ keep-alive: ‘75‘ keep-alive-requests: ‘1000‘ max-worker-connections: ‘65536‘ proxy-body-size: 80m proxy-connect-timeout: ‘10‘ reuse-port: ‘true‘ server-tokens: ‘false‘ ssl-redirect: ‘false‘ upstream-keepalive-connections: ‘1000‘ upstream-keepalive-requests: ‘10000‘ upstream-keepalive-timeout: ‘60‘ worker-cpu-affinity: auto
2.参考ingress的Annotations配置方法，优化具体deployment.yml里的ingress 配置
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/proxy-connect-timeout: "20"
nginx.ingress.kubernetes.io/proxy-send-timeout: "20"
nginx.ingress.kubernetes.io/proxy-read-timeout: "20"
nginx.ingress.kubernetes.io/connection-proxy-header: "keep-alive"
nginx.ingress.kubernetes.io/proxy-http-version: "1.1"
nginx.ingress.kubernetes.io/proxy-body-size: 80m
参考:
https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/
http://www.weixueyuan.net/a/877.html
https://www.iyunw.cn/archives/ingress-nginx-keng-dian-chi-xu-geng-xin/
https://cloud.tencent.com/developer/article/1537695