Setting up kubernets Ingress proxy-body-size based on request method - kubernetes

Question

I've been trying to set up a max body size in the Ingress controller based on the HTTP method of a given path.
Basically the POST method should allow 3m as max size and all the other methods should allow 1m.
Right now my main idea was to do something like:
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: ingress-custom-service
namespace: development
annotations:
nginx.ingress.kubernetes.io/ssl-redirect: "false"
nginx.ingress.kubernetes.io/force-ssl-redirect: "false"
kubernetes.io/ingress.class: "nginx-dev"
nginx.ingress.kubernetes.io/configuration-snippet: |
internal;
rewrite ^ $original_uri break;
nginx.ingress.kubernetes.io/server-snippet: |
location /api/v1/my-endpoint {
if ( $request_method = POST) {
set $target_destination '/_post';
client_max_body_size 3M;
}
if ( $request_method != POST) {
set $target_destination '/_not_post';
client_max_body_size 1M;
}
set $original_uri $uri;
rewrite ^ $target_destination last;
}
spec:
tls:
rules:
- host: my-host.com
http:
paths:
- path: /_post
backend:
serviceName: my-service
servicePort: 8080
- path: /_not_post
backend:
serviceName: my-service
servicePort: 8080
But then I'm getting the following error in the pod:
Is there any way I can correctly set-up the max body size via the ingress controller?

Answer 1

Try changing your annotations with the configuration-snippet
nginx.ingress.kubernetes.io/configuration-snippet: |
location /upload-path {
client_max_body_size 8M;
}
Read more at : https://github.com/kubernetes/ingress-nginx/blob/main/docs/user-guide/nginx-configuration/annotations.md#configuration-snippet