上传大文件nginx报413 Request Entity Too Large

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先说明一下请求的流程

报错的是程序客户端上传不了大视频（10m以上）到微服务的应用里边

请求流程如下

客户端------》外网nginx入口------》k8s的nginx ingress-----》java微服务应用

开始以为是外网的nginx服务器限定了文件上传的大小，设置了外网nginx的client_max_body_size=100m （上传最大为100m）发现怎么重启还是报同样的错误

于是便怀疑是nginx ingress的问题，里面的nginx ingress controler也有一段代理到backend的默认nginx配置

于是改了配置nginx ingress的configmap 的 client-body-size 为100m

[lishiwei@test-k8s-01 nginx-ingress]$ cat 01-configmap.yaml 
---
# https://github.com/nginxinc/kubernetes-ingress/tree/master/examples/customization
kind: ConfigMap
apiVersion: v1
metadata:
  name: nginx-ingress-configuration
  namespace: kube-system
  labels:
    k8s-app: nginx-ingress
data:
  client-max-body-size: "100m"
  proxy-body-size: "100m"  
---
kind: ConfigMap
apiVersion: v1
metadata:
  name: nginx-ingress-tcp-services
  namespace: kube-system

---
kind: ConfigMap
apiVersion: v1
metadata:
  name: nginx-ingress-udp-services
  namespace: kube-system

然后

[lishiwei@test-k8s-01 nginx-ingress]$ kubectl apply -f 01-configmap.yaml 
configmap "nginx-ingress-configuration" configured
configmap "nginx-ingress-tcp-services" unchanged
configmap "nginx-ingress-udp-services" unchanged

就可以上传成功了

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