# nginx-ingress-controller: 413 Entity Too Large despite configuring 10g limits

**URL:** <https://discuss.kubernetes.io/t/nginx-ingress-controller-413-entity-too-large-despite-configuring-10g-limits/32764>\
**Category:** General Discussions\
**Tags:** development, network\
**Created:** [July 18, 2025, 11:14pm UTC](https://discuss.kubernetes.io/t/nginx-ingress-controller-413-entity-too-large-despite-configuring-10g-limits/32764 "2025-07-18T23:14:40Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![fasilwdr](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.kubernetes.io/fasilwdr/32/17495_2.png) [@fasilwdr](https://discuss.kubernetes.io/u/fasilwdr)\
**Post date:** [July 18, 2025, 11:14pm UTC](https://discuss.kubernetes.io/t/nginx-ingress-controller-413-entity-too-large-despite-configuring-10g-limits/32764/1 "2025-07-18T23:14:40Z")

</div>

I’m experiencing persistent 413 “Entity Too Large” errors when trying to upload files larger than 500MB through my Odoo 18.0 application running on Kubernetes with nginx-ingress-controller v1.8.1. Despite configuring both global ConfigMap settings and Ingress-specific annotations for 10GB uploads, the error persists.

### Cluster information:

**Kubernetes version:** 1.29+  
**Cloud being used:** Bare-metal (not on a public cloud)  
**Installation method:** kubeadm  
**Host OS:** Ubuntu 22.04 LTS  
**CNI and version:** Calico  
**CRI and version:** containerd

**Additional components:**

- nginx-ingress-controller v1.8.1
- MetalLB LoadBalancer
- cert-manager for TLS

### Problem Details

**Current Configuration:**

**1. ingress-nginx-controller ConfigMap:**

```yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: ingress-nginx-controller
  namespace: ingress-nginx
data:
  client-max-body-size: "10g"
  client-body-buffer-size: "8m"
  client-body-timeout: "1800"
  proxy-body-size: "10g"
  proxy-read-timeout: "7200"
  proxy-send-timeout: "7200"
  proxy-connect-timeout: "600"
  proxy-request-buffering: "off"

```

**2. Ingress Configuration:**

```yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: odoo-demo-18-ingress
  namespace: ns-demo-18
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: "10g"
    nginx.ingress.kubernetes.io/client-max-body-size: "10g"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "7200"
    nginx.ingress.kubernetes.io/proxy-send-timeout: "7200"
    nginx.ingress.kubernetes.io/proxy-request-buffering: "off"
    nginx.ingress.kubernetes.io/client-body-buffer-size: "8m"
    cert-manager.io/cluster-issuer: letsencrypt-prod
    nginx.ingress.kubernetes.io/ssl-redirect: "true"
spec:
  ingressClassName: nginx
  rules:
  - host: demo18.bytesraw.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: odoo-demo-18
            port:
              number: 8069

```

**What I’ve tried:**

1. Applied global ConfigMap settings with `client-max-body-size: "10g"`
2. Added Ingress annotations for body size limits
3. Restarted ingress-nginx-controller multiple times after configuration changes
4. Verified ConfigMap is applied correctly
5. Attempted server-snippet approach to force settings directly

**Current nginx config shows conflicting entries:**

```bash
kubectl exec -n ingress-nginx deployment/ingress-nginx-controller -- nginx -T | grep -i "client_max_body_size"

```

Results in:

- Some entries: `client_max_body_size 10g;` ✅
- Some entries: `client_max_body_size 0;` ❌
- One entry: `client_max_body_size 21M;` ❌

**Error Logs:**

```auto
# Ingress Controller Log:
10.244.0.1 - - [18/Jul/2025:18:52:59 +0000] "POST /odooupgrade/submit HTTP/2.0" 413 171

# Odoo Application Log:  
2025-07-18 18:52:59,935 33 INFO test werkzeug: 10.244.0.1 - - [18/Jul/2025 18:52:59] "POST /odooupgrade/submit HTTP/1.1" 413

```

**Questions:**

1. Why are there multiple conflicting `client_max_body_size` directives in the nginx config?
2. How can I ensure the 10g limit is applied consistently across all server blocks?
3. Could SSL termination or MetalLB be interfering with the body size limits?

**Expected:** Files up to 10GB should upload successfully  
**Actual:** Files over 500MB fail with 413 error immediately

Any help would be greatly appreciated!