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I try to set up Apache v2.4 + PHP-FPM + ProxyPassMatch using Unix socket.

Using Debian 9 Stretch, PHP v5.6.37, PHP v7.0.31, Apache v2.4.25.

My virtualhost setting is the following (000-default.conf):

<VirtualHost *:80> ServerAdmin webmaster@localhost ServerName local.lc DocumentRoot /var/www ProxyPassMatch "^/(.*\.php(/.*)?)$" "unix:/var/run/php5.6-fpm.sock|fcgi://localhost/var/www/" <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost>

I executed the following commands:

sudo apt-get install php7.0-cli php7.0-fpm php-pear libapache2-mod-fcgid sudo apt install software-properties-common # add repo to get PHP5 sudo apt-get -y install apt-transport-https lsb-release ca-certificates sudo curl https://packages.sury.org/php/apt.gpg | apt-key add - sudo wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg sudo echo 'deb https://packages.sury.org/php/ stretch main' > /etc/apt/sources.list.d/deb.sury.org.list sudo apt-get update sudo apt-get install php5.6-cli php5.6-fpm sudo apt-get install php7.0 php7.0-fpm sudo a2enconf php5.6-fpm sudo systemctl reload apache2 sudo a2dismod php5 php7 php5.6 php7.0 mpm_prefork sudo a2enmod actions alias proxy_fcgi mpm_worker sudo systemctl restart apache2 php5.6-fpm php7.0-fpm

Servers are restarted after changes using:

sudo systemctl restart apache2 php5.6-fpm php7.0-fpm

I get empty page, when I load the 

http://local.lc/

website on my Windows based development computer. The local.lc is in the "hosts" file.

I see the following in the log (/var/log/apache2/error.log):

[Tue Aug 28 23:24:26.685004 2018] [mpm_worker:notice] [pid 43104:tid 140487559849152] AH00295: caught SIGTERM, shutting down [Tue Aug 28 23:24:27.001054 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity for Apache/2.9.1 (http://www.modsecurity.org/) configured. [Tue Aug 28 23:24:27.001189 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: APR compiled version="1.5.2"; loaded version="1.5.2" [Tue Aug 28 23:24:27.001205 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: PCRE compiled version="8.39 "; loaded version="8.39 2016-06-14" [Tue Aug 28 23:24:27.001223 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: LUA compiled version="Lua 5.1" [Tue Aug 28 23:24:27.001236 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: YAJL compiled version="2.1.0" [Tue Aug 28 23:24:27.001248 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: LIBXML compiled version="2.9.4" [Tue Aug 28 23:24:27.001498 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: StatusEngine call: "2.9.1,Apache/2.4.25 (Debian),1.5.2/1.5.2,8.39/8.39 2016-06-14,Lua 5.1,2.9.4,cb" [Tue Aug 28 23:24:27.135554 2018] [:notice] [pid 43531:tid 139833116394688] ModSecurity: StatusEngine call successfully sent. For more information visit: http://status.modsecurity.org/ [Tue Aug 28 23:24:28.005175 2018] [mpm_worker:notice] [pid 43532:tid 139833116394688] AH00292: Apache/2.4.25 (Debian) OpenSSL/1.0.2l mod_fcgid/2.3.9 configured -- resuming normal operations [Tue Aug 28 23:24:28.005270 2018] [core:notice] [pid 43532:tid 139833116394688] AH00094: Command line: '/usr/sbin/apache2'

I don't see any helpful in the log.

Any idea what may be wrong?

Why the default page is not loading?

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    What is the default page? There's no obvious DirectoryIndex directive in your configuration which I'd expect to be set to index.php if you're using PHP-FPM. Commented Sep 2, 2018 at 21:13
  • Added "DirectoryIndex index.html index.php" so when calling local.lc or local.lc/index.html displays: "It works!". But when I execute local.lc/index.php or local.lc/test.php the error was the following: "Service Unavailable. The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later". Commented Sep 3, 2018 at 14:47
  • Looking at the error.log now I see the following error message: "No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/run/php5.6-fpm.sock (localhost) failed". Checking the /var/run/php5.6-fpm.sock path was not found, but the /var/run/php/php5.6-fpm.sock was found. So fixing the path in the vhost config file, then loading local.lc/index.php page, now displays : "It works!". Thanks for pushing me to the right direction! Commented Sep 3, 2018 at 14:48
  • Ok, that's good. I'll add it as an answer. Commented Sep 3, 2018 at 14:49

2 Answers 2

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+50

You're missing a DirectoryIndex directive in your configuration, so when requesting a URL like http://local.lc/ Apache doesn't know what file to look for on the disk and serve instead of just showing you the contents of the directory (which is probably not what you want).

Given you're using PHP-FPM, I'd expect you to set DirectoryIndex to something like index.php which should then be processed by PHP-FPM.

Testing PHP-FPM directly using something like the cgi-fcgi utility will allow you to bypass Apache in the case it still doesn't work.

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  • Well the path problem was discovered by me, so I keep the credits for it. Please remove the "assuming you've got the socket path set correctly" part from your solution, because it was not part of your original comment. You got the bounty because you pushed me to the right direction, so you deserve it. Commented Sep 3, 2018 at 15:02
  • You might upvote my answer, as it also added some info to the full resolution. Commented Sep 3, 2018 at 15:43
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Accessing http://local.lc/index.html did not result any page, nor an error in error.log.

After fixing this with DirectoryIndex directive suggested by @bodgit, and loaded http://local.lc/index.php now resulted error in error.log.

Looking at the error.log, now I saw the following error message: 

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

Checking the /var/run/php5.6-fpm.sock path was not found, but the /var/run/php/php5.6-fpm.sock was found.

The path was fixed in my virtualhost setting as the following (000-default.conf):

<VirtualHost *:80> ServerAdmin webmaster@localhost ServerName local.lc DocumentRoot /var/www ProxyPassMatch "^/(.*\.php(/.*)?)$" "unix:/var/run/php/php5.6-fpm.sock|fcgi://localhost/var/www/" <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost>

So fixing the path in the vhost config file, then loading http://local.lc/index.php page, now displays :

"It works!".

Problem fixed!

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