How to set up Apache2 and PHP-FPM via unix socket? - php

Question

I try to set up Apache2 and PHP-FPM via unix socket but result is
(111)Connection refused: AH02454: FCGI: attempt to connect to Unix domain socket /run/php/php7.2-fpm.sock (*) failed
docker-compose.yml
version: "2"
services:
php:
build: "php:7.2-rc-alpine"
container_name: "php"
volumes:
- "./code:/usr/local/apache2/htdocs"
- "./php7.2-fpm.sock:/run/php/php7.2-fpm.sock"
apache2:
build: "httpd:2.4-alpine"
container_name: "apache2"
volumes:
- "./code:/usr/local/apache2/htdocs"
- "./php7.2-fpm.sock:/run/php/php7.2-fpm.sock"
ports:
- 80:80
links:
- php
www.conf
listen = /run/php/php7.2-fpm.sock
httpd-vhosts.conf
<FilesMatch \.php$>
SetHandler "proxy:unix:/run/php/php7.2-fpm.sock|fcgi://localhost/"
</FilesMatch>
But it's work when connect via TCP.
www.conf
listen = 127.0.0.1:9000
httpd-vhosts.conf
<FilesMatch \.php$>
SetHandler "proxy:fcgi://php:9000"
</FilesMatch>

Answer 1

Okie, so have the repo helped to fix the issue.
Issue #1 - www.conf being copied in apache container
You had below statement in your apache container Dockerfile
COPY ./www.conf /usr/local/etc/php-fpm.d/www.conf
This is actually intended for the php container which will be running php-fpm and not the apache container
Issue #2 - Socket was never being created
Your volume bind - "./php7.2-fpm.sock:/run/php/php7.2-fpm.sock" was creating the socket and they were not being created by php-fpm as such. So you created a blank file and trying to connect to it won't do anything
Issue #3 - No config in php to create socket
The docker container by default create listen to 0.0.0.0:9000 inside the fpm container. You needed to override the zz-docker.conf file inside the container to fix the issue.
zz-docker.conf
[global]
daemonize = no
[www]
listen = /run/php/php7.2-fpm.sock
listen.mode = 0666
Updated docker file
FROM php:7.2-rc-fpm-alpine
LABEL maintainer="Eakkapat Pattarathamrong (overbid#gmail.com)"
RUN docker-php-ext-install \
sockets
RUN set -x \
&& deluser www-data \
&& addgroup -g 500 -S www-data \
&& adduser -u 500 -D -S -G www-data www-data
COPY php-fpm.d /usr/local/etc/php-fpm.d/
Issue #4 - Sockets being shared as volumes to host
You should be sharing sockets using a named volume, so the socket should not be on host at all.
Updated docker-compose.yml
version: "2"
services:
php:
build: "./php"
container_name: "php"
volumes:
- "./code:/usr/local/apache2/htdocs"
- "phpsocket:/run/php"
apache2:
build: "./apache2"
container_name: "apache2"
volumes:
- "./code:/usr/local/apache2/htdocs"
- "phpsocket:/run/php"
ports:
- 7080:80
links:
- php
volumes:
phpsocket:
After fixing all the issues I was able to get the php page working