Can't connect PhpStorm with xdebug with Docker

Question

I have the following Dockerfile:

 FROM php:7.0-fpm-alpine

RUN  apk add --update --virtual build_deps gcc g++ autoconf make &&\
  docker-php-source extract &&\
  pecl install xdebug &&\
  echo "zend_extension=$(find /usr/local/lib/php/extensions/ -name xdebug.so)" > /usr/local/etc/php/conf.d/xdebug.ini \
  && echo "xdebug.remote_enable=1" >> /usr/local/etc/php/conf.d/xdebug.ini \
  && echo "xdebug.remote_autostart=0" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_connect_back=1" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_handler = dbgp" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_mode = req" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  docker-php-ext-enable xdebug &&\
  docker-php-source delete && \
  apk del build_deps && \
  rm -rf /var/cache/apk/* && \
  rm -rf /tmp/*

ENTRYPOINT ["php-fpm"]

And I run it with the following docker-compose.yml:

version: '2'
services:
  nginx_dev:
    image: nginx:alpine
    ports:
      - "5092:5092"
    links:
      - "my_symfony_www_dev"
    volumes:
      - './conf/nginx/nginx_dev.conf:/etc/nginx/nginx.conf:ro'
      - './logs/dev:/var/logs'
    volumes_from:
      - 'my_symfony_www_dev'

    my_symfony_www_dev:
      build:
        context: .
        dockerfile: Dockerfile_dev
      image: "myimage/my_symfony_app:dev_php"  
      volumes:
        - "$SOURCE_PATH:/var/www/html:Z"
      environment:
        - PHP_IDE_CONFIG= "serverName=my_symfony_www_dev"
        - XDEBUG_CONFIG="remote_host=10.254.254.254,remote_port=9080"
        - PHP_XDEBUG_ENABLED=1

Also as seen there I run:

sudo ip addr add 10.254.254.254/24 brd + dev enp4s0 label enp4s0:1

And configured the PhpStorm IDE like that:

Then in Firefox I press the button and in PhpStorm I press the button I set a breakpoint over the app_dev.php and nothing happens.

My system listens over the port 9080 via netstat -ntlp command where the PhpStorm listens to (PhpStorm is a server according to that answer).

tcp        0      0 0.0.0.0:9080            0.0.0.0:*               LISTEN      4773/java

Do you have any idea on why that happens and how to fix it?

Edit 1:

The phpinfo() shows:

I've also set de cocker-compose.yml as:

version: '2'
services:
  nginx_dev:
    image: nginx:alpine
    ports:
      - "5092:5092"
    links:
      - "my_symfony_www_dev"
    volumes:
      - './conf/nginx/nginx_dev.conf:/etc/nginx/nginx.conf:ro'
      - './logs/dev:/var/logs'
    volumes_from:
      - 'my_symfony_www_dev'

    my_symfony_www_dev:
      build:
        context: .
        dockerfile: Dockerfile_dev
      image: "myimage/my_symfony_app:dev_php"  
      volumes:
        - "$SOURCE_PATH:/var/www/html:Z"
      environment:
        - XDEBUG_CONFIG="remote_host=10.254.254.254,remote_port=9080"
        - PHP_XDEBUG_ENABLED=1

And my dockerfile is:

FROM php:7.0-fpm-alpine

RUN  apk add --update --virtual build_deps gcc g++ autoconf make &&\
  docker-php-source extract &&\
  pecl install xdebug &&\
  echo "zend_extension=$(find /usr/local/lib/php/extensions/ -name xdebug.so)" > /usr/local/etc/php/conf.d/xdebug.ini \
  && echo "xdebug.remote_enable=1" >> /usr/local/etc/php/conf.d/xdebug.ini \
  && echo "xdebug.remote_autostart=0" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_connect_back=0" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_handler = dbgp" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_mode = req" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  docker-php-ext-enable xdebug &&\
  docker-php-source delete && \
  apk del build_deps && \
  rm -rf /var/cache/apk/* && \
  rm -rf /tmp/*

ENTRYPOINT ["php-fpm"]

Still Same result.

1) Collect `phpinfo()` output captured via browser (as you are trying to debug a web page) -- top header table + xdebug specific section. This is to confirm currently applied/active settings; 2) Enable and collect xdebug logs for such unsuccessful debug session; 3) You have `xdebug.remote_connect_back=1` in your Dockerfile -- with this option xdebug ignores value of `xdebug.remote_host`. So far it must be wrong IP issue -- xdebug must be trying to connect but to the wrong IP (could be because of #3 for example) — LazyOne, Nov 14 '17 at 12:17
4) You have specified `serverName=my_symfony_www_dev`. In such case Host field in `PHP | Servers` should also be using it -- that's how PhpStorm identifies what Server entry to use. — LazyOne, Nov 14 '17 at 12:20
I hope [this answer](https://stackoverflow.com/questions/45019201/phpstorm-debug-with-laravel-homestead-not-working/45019239#45019239) might help you — online Thomas, Nov 14 '17 at 12:49
1) Do not silently update the post -- nobody gets notified about that. 2) Where is xdebug log? 3) Your screenshot of xdebug info shows that your `XDEBUG_CONFIG` from docker_compose file is not getting applied, at very least in a way you were expecting it to be (port and remote_host are still using defaults). — LazyOne, Nov 14 '17 at 15:45
Instead of using a breakpoint inside phpstorm, you can also use this function in your code ````xdebug_break();````. If this triggers the debug function in phpstorm, there is probably something wrong with your path mapping — veelen, Nov 15 '17 at 13:27
In preferences>Languages&Frameworks>PHP clicking the block on the utter right of the CLI interpreters options triggers the CLI interpreters window. If xdebug is configured right, and phpstorm can detect is, the "General" section will show de debugger name and version number. Does this show ````Debugger: Xdebug {version}````? — veelen, Nov 15 '17 at 13:35

score 2 · Accepted Answer · answered Nov 23 '17 at 08:06

In the end I had to do put the following over my Dockerfile:

FROM php:7.0-fpm-alpine

VOLUME /var/log/xdebug

ARG XDEBUG_HOST="172.17.0.1"
ARG XDEBUG_PORT=9021

RUN  apk add --update --virtual build_deps gcc g++ autoconf make &&\
  docker-php-source extract &&\
  pecl install xdebug &&\
  docker-php-ext-enable xdebug &&\
  && echo "xdebug.remote_enable=1" >> /usr/local/etc/php/conf.d/xdebug.ini \
  && echo "xdebug.remote_autostart=0" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_connect_back=1" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_handler = dbgp" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_mode = req" >> /usr/local/etc/php/conf.d/xdebug.ini &&\
  echo "xdebug.remote_host=${XDEBUG_HOST}" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini &&\
  echo "xdebug.remote_port=${XDEBUG_PORT}" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini &&\
  docker-php-source delete && \
  apk del build_deps && \
  rm -rf /var/cache/apk/* && \
  rm -rf /tmp/*

ENTRYPOINT ["php-fpm"]

The XDEBUG_HOST build arg contains the ip of docker0 network interface over GNU/Linux systems (use ifconfig to find out).

And over my docker-compose.yml I provide the following:

version: '2'
services:
  nginx_dev:
    image: nginx:alpine
    ports:
      - "5092:5092"
    links:
      - "my_symfony_www_dev"
    volumes:
      - './conf/nginx/nginx_dev.conf:/etc/nginx/nginx.conf:ro'
      - './logs/dev:/var/logs'
    volumes_from:
      - 'my_symfony_www_dev'

    my_symfony_www_dev:
      build:
        context: .
        dockerfile: Dockerfile_dev
        args:
          XDEBUG_HOST: 172.17.0.1
          XDEBUG_PORT: 9021
      image: "myimage/my_symfony_app:dev_php"  
      volumes:
        - "$SOURCE_PATH:/var/www/html:Z"

Over the ./conf/nginx/nginx_dev.conf mapped over the volume I put the following setting on server section:

server_name 0.0.0.0;

Then on phpstorm use the following settings:

Then you are good to go!

Can't connect PhpStorm with xdebug with Docker

Edit 1:

1 Answers1

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