k8s解决java服务下载超时问题

问题描述：

我们在走ingress的java程序的时候，往往会有导出数据的功能，这个时候就会有因网络慢、后台处理时间过长导致下载超时，也有因下载文件太大，导致下载失败，综合解决办法如下

编辑ingress

metadata:
  annotations:
    nginx.ingress.kubernetes.io/fastcgi-buffer-size: 128k
    nginx.ingress.kubernetes.io/fastcgi-buffers: 4 128k
    nginx.ingress.kubernetes.io/fastcgi-busy-buffers-size: 256k
    nginx.ingress.kubernetes.io/fastcgi-temp-file-write-size: 256k
    nginx.ingress.kubernetes.io/proxy-buffering: 'on'
    nginx.ingress.kubernetes.io/proxy-connect-timeout: '600'
    nginx.ingress.kubernetes.io/proxy-read-timeout: '600'
    nginx.ingress.kubernetes.io/proxy-send-timeout: '600'

其中
1）更改反向代理超时时间

    nginx.ingress.kubernetes.io/proxy-buffering: 'on'
    nginx.ingress.kubernetes.io/proxy-connect-timeout: '600'
    nginx.ingress.kubernetes.io/proxy-read-timeout: '600'
    nginx.ingress.kubernetes.io/proxy-send-timeout: '600'

2）更改缓存大小

    nginx.ingress.kubernetes.io/fastcgi-buffer-size: 128k
    nginx.ingress.kubernetes.io/fastcgi-buffers: 4 128k
    nginx.ingress.kubernetes.io/fastcgi-busy-buffers-size: 256k
    nginx.ingress.kubernetes.io/fastcgi-temp-file-write-size: 256k
    nginx.ingress.kubernetes.io/proxy-buffering: 'on'