nginx: connect() failed (111: Connection refused) while connecting to upstream - php

Question

Trying to deploy my first portal .
I am getting 502 gateway timeout error in browser when i was sending the request through browser
when i checked the logs , i got this error
2014/02/03 09:00:32 [error] 16607#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 14.159.131.19, server: foo.com, request: "GET HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "22.11.180.154"
is there any problem related to permissions

Answer 1

I don't think that solution would work anyways because you will see some error message in your error log file.
The solution was a lot easier than what I thought.
simply, open the following path to your php5-fpm
sudo nano /etc/php5/fpm/pool.d/www.conf
or if you're the admin 'root'
nano /etc/php5/fpm/pool.d/www.conf
Then find this line and uncomment it:
listen.allowed_clients = 127.0.0.1
This solution will make you be able to use listen = 127.0.0.1:9000 in your vhost blocks
like this: fastcgi_pass 127.0.0.1:9000;
after you make the modifications, all you need is to restart or reload both Nginx and Php5-fpm
Php5-fpm
sudo service php5-fpm restart
or
sudo service php5-fpm reload
Nginx
sudo service nginx restart
or
sudo service nginx reload
From the comments:
Also comment
;listen = /var/run/php5-fpm.sock
and add
listen = 9000

Answer 2

I had the same problem when I wrote two upstreams in NGINX conf
upstream php_upstream {
server unix:/var/run/php/my.site.sock;
server 127.0.0.1:9000;
}
...
fastcgi_pass php_upstream;
but in /etc/php/7.3/fpm/pool.d/www.conf I listened the socket only
listen = /var/run/php/my.site.sock
So I need just socket, no any 127.0.0.1:9000, and I just removed IP+port upstream
upstream php_upstream {
server unix:/var/run/php/my.site.sock;
}
This could be rewritten without an upstream
fastcgi_pass unix:/var/run/php/my.site.sock;

Answer 3

I faced the same issue in Centos 8.
In this file /etc/nginx/default.d/php.conf I just replaced the below line, and it works perfectly.
#orignal line
fastcgi_pass 127.0.0.1:9000;
#replaced with
fastcgi_pass unix:/run/php-fpm/www.sock;

Answer 4

This may be useful for someone:
If you have multiple versions of PHP installed e.g 8.0 and 7.4 on your mac, and you have tried several options and still gets a 502 Gateway error, trying check how your valet connects with your PHP version and Nginx.
from terminal run valet use php#7.4 if that's the version you use.
The current version will be unlinked and the new version linked then Nginx and php#7.4 will be restarted.