From 30ec254b976c389ae87036e9ff9155b128c29011 Mon Sep 17 00:00:00 2001
From: Suriya <suriya@tenext.in>
Date: Wed, 29 Apr 2026 13:19:42 +0530
Subject: [PATCH] fix: increase nginx fastcgi buffers in nixpacks to fix 502
 bad gateway

---
 nginx.template.conf | 77 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 nginx.template.conf

diff --git a/nginx.template.conf b/nginx.template.conf
new file mode 100644
index 0000000..25fe421
--- /dev/null
+++ b/nginx.template.conf
@@ -0,0 +1,77 @@
+worker_processes 5;
+daemon off;
+
+worker_rlimit_nofile 8192;
+
+events {
+  worker_connections  4096;  # Default: 1024
+}
+
+http {
+    include    $!{nginx}/conf/mime.types;
+    index    index.html index.htm index.php;
+
+    default_type application/octet-stream;
+    log_format   main '$remote_addr - $remote_user [$time_local]  $status '
+        '"$request" $body_bytes_sent "$http_referer" '
+        '"$http_user_agent" "$http_x_forwarded_for"';
+    access_log /dev/stdout;
+    error_log /dev/stdout;
+    sendfile     on;
+    tcp_nopush   on;
+    server_names_hash_bucket_size 128; # this seems to be required for some vhosts
+
+    server {
+        listen ${PORT};
+        listen [::]:${PORT};
+        server_name localhost;
+
+        $if(NIXPACKS_PHP_ROOT_DIR) (
+            root ${NIXPACKS_PHP_ROOT_DIR};
+        ) else (
+            root /app;
+        )
+     
+        add_header X-Frame-Options "SAMEORIGIN";
+        add_header X-Content-Type-Options "nosniff";
+     
+        index index.php;
+     
+        charset utf-8;
+     
+        $if(IS_LARAVEL) (
+            location / {
+                try_files $uri $uri/ /index.php?$query_string;
+            }
+        ) else ()
+        
+        $if(NIXPACKS_PHP_FALLBACK_PATH) (
+          location / {
+            try_files $uri $uri/ ${NIXPACKS_PHP_FALLBACK_PATH}?$query_string;
+          }
+        ) else ()
+     
+        location = /favicon.ico { access_log off; log_not_found off; }
+        location = /robots.txt  { access_log off; log_not_found off; }
+     
+        $if(IS_LARAVEL) (
+            error_page 404 /index.php;
+        ) else ()
+     
+        location ~ \.php$ {
+            fastcgi_pass 127.0.0.1:9000;
+            fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
+            include $!{nginx}/conf/fastcgi_params;
+            include $!{nginx}/conf/fastcgi.conf;
+
+            # --- CUSTOM: INCREASE BUFFERS TO FIX 502 BAD GATEWAY ---
+            fastcgi_buffers 16 32k;
+            fastcgi_buffer_size 64k;
+            fastcgi_busy_buffers_size 64k;
+        }
+     
+        location ~ /\.(?!well-known).* {
+            deny all;
+        }
+    }
+}