failed to open stream: Cannot assign requested address

[muuvmuuv]

I have set up a docker-compose with a nginx:1.15.12 server and php:7.3-fpm-stretch.

docker-compose.yml

version: '3.7'

services:
  nginx:
    image: localhost-nginx
    build: ./docker/nginx
    container_name: localhost-nginx
    ports:
      - '80:80'
      - '443:443'
    volumes:
      - type: bind
        source: ./certs
        target: /etc/nginx/ssl
        read_only: true
      - type: bind
        source: ./www
        target: /var/www/localhost
        read_only: true
      - type: bind
        source: ./docker/nginx/components
        target: /etc/nginx/components
        read_only: true
      - type: bind
        source: ./docker/nginx/conf.d
        target: /etc/nginx/conf.d
        read_only: true
  php:
    image: localhost-php
    build: ./docker/php
    container_name: localhost-php
    volumes:
      - type: bind
        source: ./www
        target: /var/www/localhost
        read_only: true
      - type: bind
        source: ./docker/php/php.ini
        target: /usr/local/etc/php/php.ini
        read_only: true

  # MEMCACHED

  # MARIADB

docker/php/Dockerfile

FROM php:7.3-fpm-stretch

COPY share/entrypoint.sh    /usr/share/
COPY share/php-*.sh         /usr/share/
COPY php.ini                /usr/local/etc/php/php.ini
COPY conf.d/*               /usr/local/etc/php/conf.d/


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Install packages

ENV pkg_dev "libpng-dev libicu-dev libzip-dev libbz2-dev"
ENV pkg_php ""

RUN printf "\n\e[96m>\e[0m\033[1m Install packages \e[0m\n\n" \
  # && php -i \
  && apt-get update \
  && apt-get install -qqy $pkg_dev $pkg_php \
  && echo "---"


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Configure System

RUN printf "\n\e[96m>\e[0m\033[1m Configure System \e[0m\n\n" \
  && ln -fs /usr/share/zoneinfo/${TIMEZONE} /etc/localtime \
  && dpkg-reconfigure -f noninteractive tzdata \
  && chmod +x /usr/share/entrypoint.sh \
  && chmod +x /usr/share/php-*.sh \
  && pear config-set php_ini /usr/local/etc/php/php.ini \
  && pecl config-set php_ini /usr/local/etc/php/php.ini \
  && echo "---"


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Configure php-fpm

# TODO: replace ACPU with docker memcached
RUN printf "\n\e[96m>\e[0m\033[1m Configure php-fpm \e[0m\n\n" \
  && pecl install apcu \
  && pecl install xdebug \
  && docker-php-ext-enable opcache \
  && docker-php-ext-install gd \
  && docker-php-ext-install bz2 \
  && docker-php-ext-install intl \
  && docker-php-ext-install zip \
  && docker-php-ext-install mysqli \
  && echo "---"


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Cleaning

RUN printf "\n\e[96m>\e[0m\033[1m Cleaning \e[0m\n\n" \
  && apt-get purge -qqy $pkg_dev \
  && rm -rf /var/lib/apt/lists/* \
  && echo "---"

ENTRYPOINT ["/usr/share/entrypoint.sh"]

CMD ["php-fpm"]

docker/nginx/Dockerfile

FROM nginx:1.15.12

COPY share/entrypoint.sh    /usr/share/
COPY share/nginx-*.sh       /usr/share/

ENV TIMEZONE              Europe/Berlin
ENV NGINX_VERSION_SHORT   1.15.12


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Install packages

ENV pkg_common ""

RUN printf "\n\e[96m>\e[0m\033[1m Install packages \e[0m\n\n" \
  && apt-get update \
  && apt-get install -qqy $pkg_common \
  && echo "---"


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Configure System

RUN printf "\n\e[96m>\e[0m\033[1m Configure System \e[0m\n\n" \
  && ln -fs /usr/share/zoneinfo/${TIMEZONE} /etc/localtime \
  && dpkg-reconfigure -f noninteractive tzdata \
  && chmod +x /usr/share/entrypoint.sh \
  && chmod +x /usr/share/nginx-*.sh \
  && echo "---"


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Configure NGINX

RUN printf "\n\e[96m>\e[0m\033[1m Configure NGINX \e[0m\n\n" \
  && unlink /var/log/nginx/access.log \
  && unlink /var/log/nginx/error.log \
  && touch /var/log/nginx/access.log \
  && touch /var/log/nginx/error.log \
  && chown nginx /var/log/nginx/*log \
  && chmod 644 /var/log/nginx/*log \
  && touch /var/run/nginx.pid \
  && chown -R 991:991 /var/run/nginx.pid \
  && echo "---"


# ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
# Cleaning

RUN printf "\n\e[96m>\e[0m\033[1m Cleaning \e[0m\n\n" \
  && apt-get purge -qqy $pkg_common \
  && rm -rf /var/lib/apt/lists/* \
  && echo "---"


COPY conf.d/        /etc/nginx/conf.d/
COPY components/    /etc/nginx/components/
COPY nginx.conf     /etc/nginx/nginx.conf
COPY modules/*      /usr/lib/nginx/modules/

ENTRYPOINT ["/usr/share/entrypoint.sh"]

CMD ["nginx", "-g", "daemon off;"]

The server is running fine and also all plugin, no errors, but when I call file_get_contents in PHP I get this error:

Warning: file_get_contents(https://localhost/data/nav.json): failed to open stream: Cannot assign requested address in /var/www/localhost/partials/header.php on line 3
string(31) "https://localhost/data/nav.json" bool(false)

• https://localhost/data/nav.json: does not work
• /data/nav.json: does not work
• data/nav.json: work but only on pages where data is available

EDIT

Project can be found here: https://github.com/muuvmuuv/webserver

[wglambert]

Might be something with the nginx configuration, using wordpress to setup a server FROM php:7.3-apache I can file_get_contents on http://localhost and https on available url's

 docker run -d --rm --name wordpress wordpress
c57cf8d00f9ed25689cced825061a38deb6b7dd2057bbf3a22122806f85675b4

$ docker exec -it wordpress bash

root@c57cf8d00f9e:/var/www/html# echo works > test.txt

root@c57cf8d00f9e:/var/www/html# php -a
Interactive shell

php > echo file_get_contents("http://localhost/test.txt");
works

php > echo file_get_contents("https://google.com");
(works) . . .

php > exit

root@c57cf8d00f9e:/var/www/html# php -i | grep fopen
allow_url_fopen => On => On

$ docker run -it --rm php:7.3-fpm bash

root@53b2b1ea347e:/var/www/html# php -a
Interactive shell

php > echo file_get_contents("https://google.com");
(works) . . .

[muuvmuuv]

Hey @wglambert,

I read here that pm.max_children = 1 should be increased in fpm conf. I tried to COPY my own zz-www.conf into /usr/local/etc/php-fpm.d but it seems this directory is not included in /usr/local/etc/php-fpm.conf. Maybe I got something wrong but shouldn't it be include=php-fpm.d/*.conf?

I don't know if this fixes my problem but just wanted to let you know in case this is wrong, otherwise correct me.

[muuvmuuv]

Ah ok, no I was wrong. But still getting the error. Is there a way to check which conf is loaded/resolved by fpm? I would like to check if my zz-www.conf is really loaded and pm.max_children = 24 is passed.

[muuvmuuv]

Uploaded the project here: https://github.com/muuvmuuv/webserver

[wglambert]

$ cat zz-www.conf 
pm.max_children = 24

$ docker run -it --rm -v "$PWD"/zz-www.conf:/usr/local/etc/php-fpm.d/zz-www.conf php:fpm bash
root@b30874ac0a3b:/var/www/html# php-fpm -tt 2>&1 | grep max_children
[11-Jun-2019 16:30:36] NOTICE:  pm.max_children = 24
[11-Jun-2019 16:30:36] NOTICE:  pm.max_children = 24

You could also try asking the Docker Community Forums, the Docker Community Slack, or Stack Overflow to help you troubleshoot

[muuvmuuv]

Opened a Stack Overflow question here: https://stackoverflow.com/questions/56542929/docker-nginx-php-fpm-file-get-contents-not-working?noredirect=1#comment99674278_56542929

I'll try to find some help on Slack now.