Proxy_buffer_size : 502 bad gateway error

[weltonrodrigo]

@Frostbourn

 location / {
      proxy_buffer_size   128k;
      proxy_buffers   4 256k;
      proxy_busy_buffers_size   256k;
    }

The equivalent annotations in ingress-nginx are:

• nginx.ingress.kubernetes.io/proxy-buffer-size: "256k"
  https://github.com/kubernetes/ingress-nginx/blob/main/docs/user-guide/nginx-configuration/annotations.md#proxy-buffer-size
• nginx.ingress.kubernetes.io/proxy-buffers-number: "4"
  https://github.com/kubernetes/ingress-nginx/blob/main/docs/user-guide/nginx-configuration/annotations.md#proxy-buffers-number

It is unclear if there is an equivalent annotation for proxy_busy_buffers_size .

In my experience, only the following annotation is needed. The other has sensible defaults:

nginx.ingress.kubernetes.io/proxy-buffer-size: “256k”

Here is an example of how to use this annotation in an Ingress resource:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: my-keycloak-ingress
  annotations:
    nginx.ingress.kubernetes.io/proxy-buffer-size: “256k”
    # Other annotations
spec:
  rules:
  #(…)