I am using Ingress NGINX in my Kubernetes cluster: https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/

Since Ingress NGINX supports Fast CGI as direct backend, I run a container with a Laravel app serving through php-fpm on port 9000. Now I tried to use Ingress NGINX as proxy with FCGI as backend, but I am not able to configure it.

According to the Laravel documentation, a nginx configuration should look like this (https://laravel.com/docs/8.x/deployment):

server {
    listen 80;
    server_name example.com;
    root /srv/example.com/public;

    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";

    index index.php;

    charset utf-8;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    error_page 404 /index.php;

    location ~ \.php$ {
        fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        include fastcgi_params;
    }

    location ~ /\.(?!well-known).* {
        deny all;
    }
}

Unfortunately, it looks like not able to create the locations for / and for ~ \.php$ since Ingress NGINX does reserve the location / without any reason.

My configuration looks like this:

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: ingress-fastcgi
  namespace: default
  annotations:
    kubernetes.io/ingress.class: "nginx"
    kubernetes.io/ingress.allow-http: "false"
    cert-manager.io/cluster-issuer: "letsencrypt-production"
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
    nginx.ingress.kubernetes.io/backend-protocol: "FCGI"
    nginx.ingress.kubernetes.io/fastcgi-index: "index.php"
spec:
  tls:
    - hosts:
        - api.abcxyz.cloud
      secretName: api-cert-secret
  rules:
    - host: api.abcxyz.cloud
      http:
        paths:
          - path: /
            backend:
              serviceName: laravel
              servicePort: 9000

How can I handle the requirements coming from Laravel with Ingress NGINX and FCGI?