Symfony could not find driver using docker - docker

Question

I'm trying to create symfony 5 project using docker with a container for mysql, phpmyadmin, symfony and maildev.
Here is my configuration in the docker-compose.yml :
version: '3.7'
services:
db:
image: mysql:latest
container_name: ruakh_db
restart: always
volumes:
- db-data:/var/lib/mysql
environment:
MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
networks:
- dev
phpmyadmin:
image: phpmyadmin:latest
container_name: ruakh_phpmyadmin
restart: always
depends_on:
- db
ports:
- 8080:80
environment:
PMA_HOST: db
networks:
- dev
maildev:
image: maildev/maildev
container_name: ruakh_mail_dev
restart: always
command: bin/maildev --web 80 --smtp 25 --hide-exetensions STARTTLS
ports:
- 8081:80
networks:
- dev
apache:
build: php
container_name: ruakh_www
ports:
- 80:80
volumes:
- ./php/vhosts:/etc/apache2/sites-enabled
- ./:/var/www
restart: always
networks:
- dev
networks:
dev:
volumes:
db-data:
The Dockerfile configuration to create the server :
FROM php:8.0-apache
RUN echo "ServerName localhost" >> /etc/apache2/apache2.conf
RUN apt-get update \
&& apt-get install -y --no-install-recommends locales apt-utils git libicu-dev g++ libpng-dev libxml2-dev libzip-dev libonig-dev libxslt-dev;
RUN echo "en_US.UTF8 UTF8" > /etc/locale.gen && \
echo "fr_FR.UTF-8 UTF-8" >> /etc/locale.gen && \
locale-gen
RUN curl -sSk https://getcomposer.org/installer | php -- --disable-tls && \
mv composer.phar /usr/local/bin/composer
RUN docker-php-ext-configure intl
RUN docker-php-ext-install pdo pdo_mysql gd opcache intl zip calendar dom mbstring zip gd xsl
RUN pecl install apcu && docker-php-ext-enable apcu
WORKDIR /var/www/
The issue i'm struggling with is that whenever I want to run a php bin/console make:migration it throws me this error :
In AbstractMySQLDriver.php line 128: An exception occurred in driver: could not find driver
I assume that it has something to do with my .env and my server can't manage to connect to the database.
Here is the .env :
MAILER_DSN=smtp://ruakh_mail_dev:25?verify_peer=0
DATABASE_URL="mysql://root:#ruakh_db/ruakh?serverVersion=5.7"
How could I manage to resolve this error ?
I can run queries to the database and fetch data from a controller.
But I can't run php bin/console make migration but the php bin/console make:entity is working
here is the config/packages/doctrine :
doctrine:
dbal:
url: '%env(resolve:DATABASE_URL)%'
# IMPORTANT: You MUST configure your server version,
# either here or in the DATABASE_URL env var (see .env file)
#server_version: '13'
orm:
auto_generate_proxy_classes: true
naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
auto_mapping: true
mappings:
App:
is_bundle: false
type: annotation
dir: '%kernel.project_dir%/src/Entity'
prefix: 'App\Entity'
alias: App
EDIT
Today I just opened and tried again and it seems like the error had change here is the error I got now :
In AbstractMySQLDriver.php line 112:
An exception occurred in driver: SQLSTATE[HY000] [2002]
php_network_getaddresses: getaddrinfo failed: Temporary failure in name > resolution
I find a solution to avoid my problem. Whenever something is about the database I run the commands from the docker containereven if it's not what I was looking for. So I keep this post open in case someone have an answer.

Answer 1

A better understanding of docker will help you get why it's working inside the container and not from your machine.
When you declare services in docker-compose.yml each service will have a DNS name which is the container_name so when you are inside one of the containers ruakh_db is reachable, that's why your controllers are able to access the database.
But when you are outside the containers ruakh_db has no meaning as your machine will not be able to resolve the DNS name. That's why your command line wont work.
One solution is to configure your OS to make ruakh_db point at your localhost.
Doing so depends on the OS you are using, but generally it consists of adding this line to your hosts file:
127.0.0.1 ruakh_db
Follow this link for more information on how to change your hosts file depending on your OS: https://www.howtogeek.com/howto/27350/beginner-geek-how-to-edit-your-hosts-file/
You should then configure your MySQL container to expose an external port, so it's reachable from outside :
db:
image: mysql:latest
container_name: ruakh_db
restart: always
volumes:
- db-data:/var/lib/mysql
environment:
MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
networks:
- dev
ports:
- 3306:3306
You also should have mysql extension on your machinesphp-cli installed to be able to talk to your mysql database.