Home/ Questions/Connect() failed (111: connection refused) while connecting to upstream - simple way to solve it
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Amos Murphy
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Asked: 2022-05-18T21:17:14+00:00 In:

Connect() failed (111: connection refused) while connecting to upstream – simple way to solve it

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Hi everyone, I’m learning about php. While working, I try check the nginx error log after updating nginx to version 1.19. As a result, I get the message:

2021/03/24 06:25:50 [error] 56837#56837: *7775 connect() failed (111: Connection refused) while connecting to upstream, client: 85.208.98.19, server: bienestarmutuo.org, request: "GET /ten-principles-of-the-new-education/ HTTP/1.1", upstream: "fastcgi://10.64.10.43:8050", host: "mutualwelfare.org"

What can I do about the “connect() failed (111: connection refused) while connecting to upstream” issue? Is there a better approach?

connect failed 111: connection refused
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2 Answers

  1. Best Answer
    Expert

    The cause: I think this error occurs because of the use of different port “name” in nginx and php.

    Solution:

    Access your php5-fpm by opening the following path.

    sudo nano /etc/php5/fpm/pool.d/www.conf

    or if you are the root administrator

    nano /etc/php5/fpm/pool.d/www.conf

    Then locate this line and remove the comment:

    listen.allowed_clients = 127.0.0.1

    With this fix, your vhost blocks will allow you to utilize  listen = 127.0.0.1:9000 

    like this: fastcgi_pass 127.0.0.1:9000;

    You only need to restart or reload Nginx and PHP5-fpm after making the changes.

    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
    • 0

  2. It took many hours to locate the root cause of the problem (many install, purge).

    Problem was for me the use of different port names in nginx or php.

    in php (/etc/php/8.0/fpm/pool.d/bienestarmutuo-org8050.conf) i have 

    listen = localhost:8050

    in nginx (/etc/nginx/sites-available/bienestarmutuo.org.conf) i have 

    fastcgi_pass 10.64.10.43:8050;

    This was modified to:

    In nginx 

    fastcgi_pass 127.0.0.1:8050;

    In php 

    listen = 127.0.0.1:8050

    All things work again after restarting php or nginx.

    Note: Use 127.0.0.1 instead localhost to save a DNS lookup

    I found the best solution was to use the same ipport reference in both PHP and nginx -> 127.0.0.1

    • 7

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