Magento – How to enable Magento 2 developer mode with just Nginx directives

developer-modemagento-2.1magento2

I am using Nginx with 2 websites on.
The first Server Config I have is:

server {
   listen 80;
   server_name "sh.dev";
   access_log /var/log/nginx/sh-access.log;
   error_log /var/log/nginx/sh-error.log;
   include /var/www/sh/project/nginx.conf;
   set $MAGE_ROOT "/var/www/sh/project";
   set $MAGE_MODE "developer";
}

upstream fastcgi_backend {
   server unix:/var/run/php/php7.0-fpm.sock;
}

And it is in developer mode, the second site uses a direct name for upstream:

server {
   listen 80;
   server_name "magento2.dev";
   access_log /var/log/nginx/magento2-access.log;
   error_log /var/log/nginx/magento2-error.log;
   include /var/www/magento2-test/magento2/nginx.conf.sample;
   set $MAGE_ROOT "/var/www/magento2-test/magento2";
   set $MAGE_MODE "developer";
}

upstream fast_backend {
   server unix:/var/run/php/php7.0-fpm.sock;
}

But I had to manually change the mode with: 

bin/magento deploy:mode:set developer

Then if you throw an exception is Magento/Framework/App/Bootstrap.php:

public function run(AppInterface $application)
{

   throw new Exception('Break this thing');

    try {
        try {
            \Magento\Framework\Profiler::start('magento');
            $this->initErrorHandler();
            $this->initObjectManager();
            $this->assertMaintenance();
            $this->assertInstalled();
            $response = $application->launch();
            $response->sendResponse();
            \Magento\Framework\Profiler::stop('magento');
        } catch (\Exception $e) {
            \Magento\Framework\Profiler::stop('magento');
            if (!$application->catchException($this, $e)) {
                throw $e;
            }
        }
    } catch (\Exception $e) {
        $this->terminate($e);
    }
}

It should show the error on the front, but it does not.

Best Answer

Depends on whether you're using FPM or FastCGI.

For FPM: env[MAGE_MODE] = developer

For FastCGI: fastcgi_param MAGE_MODE developer;

I'm not very experienced with NGINX, so let me know how you get on.

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