"Unable to connect to Home Assistant" via nginx reverse proxy

Configuration
59

Try this… (same post here: Ingress with support for websocket - #2 by nikos445)

Configuration YAML:

http:
  server_port: 80
  use_x_forwarded_for: true
  trusted_proxies:
  - 192.168.200.100

Ingress:

kind: Ingress
metadata:
  name: home-assistant-ingress
  namespace: default
  annotations: 
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
    nginx.ingress.kubernetes.io/server-snippets: |
      location /api/websocket {
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
        }
spec:
  ingressClassName: nginx
  tls:
  - hosts:
    - example.com
    secretName: home-assistant-cert
  rules:
    - host: example.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: haas
                port:
                  # number: 80
                  name: haas