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No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/run/php/php5.6-fpm.sock (*) failed – Apache

I have such virtual host settings

 <VirtualHost *:80>
            ServerAdmin webmaster@localhost
            DocumentRoot /var/www/html
    <FilesMatch .php$>
    SetHandler "proxy:unix:/var/run/php/php5.6-fpm.sock|fcgi://localhost/"
    </FilesMatch>
            ErrorLog ${APACHE_LOG_DIR}/error.log
            CustomLog ${APACHE_LOG_DIR}/access.log combined
    </VirtualHost>

phpinfo() shows that my site has a version of php 5.6. All right!

Now I am trying to restrict the rights with Mod_Ruid2. I added the following to my virtual host

RDocumentChRoot /var /www/html
<Directory "/www/html/">
        Require all granted
        RMode config
        RUidGid admin0 admin0
</Directory>

after trying to get to the site I see an error in the logs

[Sun Oct 13 16:09:02.492117 2019] [proxy:error] [pid 13571] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/run/php/php5.6-fpm.sock (*) failed
[Sun Oct 13 16:09:02.492194 2019] [proxy_fcgi:error] [pid 13571] [client 192.168.0.110:47622] AH01079: failed to make connection to backend: httpd-UDS

Tell me, what am I doing wrong?

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5

Answers


  1. 0

    I’ve just faced the same issue while trying to run apache(2.4) + php(7.2) over CentOS 8.

    [Thu Jan 09 06:59:10.420499 2020] [proxy:error] [pid 121:tid 139846433412864] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /run/php-fpm/www.sock (*) failed
[Thu Jan 09 06:59:10.420535 2020] [proxy_fcgi:error] [pid 121:tid 139846433412864] [client 127.0.0.1:55580] AH01079: failed to make connection to backend: httpd-UDS

    To solve this, I had to launch a service called “php-fpm” (sudo systemctl enable –now php-fpm), that led me to another error:

    [09-Jan-2020 07:07:09] ERROR: unable to bind listening socket for address '/run/php-fpm/www.sock': No such file or directory (2)
[09-Jan-2020 07:07:09] ERROR: FPM initialization failed

    That was caused by the folder /run/php-fpm not existing.

    mkdir -p /run/php-fpm/

    After that, just launched again php-fpm, this time without errors and apache+php worked like a charm.

    Note that there is a small difference between your error and mine, the paths are a bit different. Instead of “/run/php-fpm/” you should create “/var/run/php/”.

    Hope this helps

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  2. 0

    i had same issue on CentOS 8 and Apache 2.4.37 and after many hour research in internet , i can’t found any solution for unix domain proxy.

    i don’t know this is a bug or bad document?

    for resolve this problem only you must be replace proxy:unix:/YOUR_PATH with proxy:unix://YOUR_PATH.

    <FilesMatch .php$>
  SetHandler "proxy:unix:///var/run/php/php5.6-fpm.sock|fcgi://localhost/"
</FilesMatch>

    notice : ...|fcgi://localhost/ must be exists.

    after your change this setting the new problem appears :

    File not found.

    this error is good because we were able connected to php-fpm from apache.

    i think this problem is bug. please see this link.

    https://bugs.php.net/bug.php?id=55322

    for resolve this problem you must be implement this structure :

    httpd.conf

    <VirtualHost *:80>
  ServerName www.example.com
  DocumentRoot /var/www/example.com/public_html
  #your configs ....
</VirtualHost>

    /etc/php-fpm.d/example.com.conf

    [example.com]
;your configs...

chroot = /
access.log = /var/www/$pool/logs/phpfpm-access-$pool.log
php_admin_value[open_basedir] = /var/www/$pool/public_html

;your configs...
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  3. 0

    I faced the same issue, in my case I could fix it by restarting PHP fpm service, by running code:

    sudo service phpx.x-fpm restart

    OS: centos
    Webserver: nginx

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  4. 0

    I’ve just faced the same issue, I commented this part of code in my drupal.con (could be another one for you)

    #<FilesMatch .php$>
#    SetHandler proxy:unix:/run/php-fpm/www.sock|fcgi://localhost/
#</FilesMatch>

    And the website just show up. Apparently I did not need it on this serveur (redhat 7), but I needed it in my CentOS for the same project.

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  5. 0

    Please note I had this come up today and I found the solution on serverfault. pfrenssen’s answer specifically. Note the field name tripped me up for an hour as listen.group and group both exist. I then needed to comment a line listen.acl_users out which was uncommented by default. It important to note that the www-data user I am using is the user I have predefined (non-default) apache user. I believe this to be the underlying cause. Below is my one liner to change these values. Use cp /etc/php-fpm.d/www.conf /etc/php-fpm.d/www.conf.default first to help test as sed modifies the file in place.

    sed -i  -e 's/user = apache/user = www-data/g' 
        -e 's/group = apache/group = www-data/g' 
        -e 's/;listen.owner = nobody/listen.owner = www-data/g' 
        -e 's/;listen.group = nobody/listen.group = www-data/g' 
        -e 's/;listen.mode = 0660/listen.mode = 0660/g' 
        -e 's/listen.acl_users = apache,nginx/;listen.acl_users = apache,nginx/g' /etc/php-fpm.d/www.conf
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