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I was trying to print an order collection array (\Magento\Sales\Model\ResourceModel\Order\CollectionFactory), but it never gets printed, I know the reason.

Now when I reload my browser, I get a 503 Service Temporarily Unavailable everywhere, frontend and backend.

There is no maintenance.flag or even .maintenance.flag anywhere in var/ folder.

Mode - developer, Hosted on NGINX, plesk (other sites on same server working). I tried deleting cache, indexing, static contents deploy everything.

The error in /var/log/nginx/error.log is:

2018/02/22 11:36:56 [notice] 9870#0: signal process started 2018/02/22 11:36:56 [error] 9870#0: open() "/var/run/nginx.pid" failed (2: No such file or directory)

Kindly help!

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  • Did you try looking in the Apache/Nginx error logs? – Ethan Yehuda Feb 22 '18 at 13:10
  • Any recent changes? Are you using Apache or NginX? – Greg Feb 22 '18 at 13:11
  • I am using nginx – Kumar A. Feb 22 '18 at 13:22
  • @EthanYehuda i have updated my question – Kumar A. Feb 22 '18 at 13:29
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    @KumarA. I have posted the answer, that should solve your problem. – Greg Feb 22 '18 at 15:49
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Reload your NginX configuration:

If your system has systemctl

sudo systemctl reload nginx

If your system supports service (using debian/ubuntu) try this

sudo service nginx reload

If not (using centos/fedora/etc) you can try the init script

sudo /etc/init.d/nginx reload

Please make sure that you reload and not restart.

  • Reloading keeps the server running while re-reading any configuration file updates.

  • Reloading is safer than restarting because if a syntax error is noticed in a config file, it will not proceed with the reload and your server remains running.

  • If there is a syntax error in a config file and you restart, it's possible the server will not restart correctly.

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  • easy to run just nginx -t .many times seen it will restart/reload without any messages... this is not magento issue anyway. then afterall you must check if pid is running ps aux | grep nginx – MagenX Feb 22 '18 at 22:16
  • Sorry for my late response, but restarting nginx worked. However, i cannot manage to get any solution to core reason of this, but for now i am ready to move ahead. Thanks – Kumar A. Feb 28 '18 at 14:48
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FOR AN NGINX / PHPFPM / VARNISH SETUP

I grappled with this for a while this worked for me :

service php7.1-fpm restart

NB You will need to find the relevant php service for your environment : sudo service --status-all and see which phpfpm is in your list

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