nginx-ingress默认文件传输大小为1M（类似nginx中client_max_body_size），因业务需要，配置为10M。配置方法为在需要大文件传输的ingress中配置注解（annotations）：nginx.ingress.kubernetes.io/proxy-body-size: "10m"

详细配置举例如下：

```yaml
kind: Ingress
apiVersion: networking.k8s.io/v1
metadata:
  name: test-server-ing
  namespace: test
  labels:
    app: test-server-ing
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: 10m
spec:
  ingressClassName: nginx
  rules:
    - host: test.test.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: test-server-svc
                port:
                  number: 80
```