Docker : Drupal container linked to mysql container can't connect to mysql during Drupal installation

问题

I'm fairly new to docker, and I've just been going through the CMS's to see how easy they are to configure. So far, Wordpress and Joomla check out.

When I run the drupal container linked to mysql, I get to the drupal installation screen and where it says to connect the DB, and I use my root credentials and db host being 'localhost', and receive errors trying to connect. I've attached an image to show you the output.drupal-config-db-output-error

The error I get :

Failed to connect to your database server. The server reports the following message: SQLSTATE[HY000] [2002] No such file or directory.

Any help on this would be great. I tried to see if I could access the physical the volume with the config files, but I couldn't find them using Kitematic.

Thank you!

回答1:

The following docker compose file will startup Drupal connected to another container running Mysql

db:
  image: mysql
  environment:
    - MYSQL_ROOT_PASSWORD=letmein
    - MYSQL_DATABASE=drupal
    - MYSQL_USER=drupal
    - MYSQL_PASSWORD=drupal
  volumes:
    - /var/lib/mysql
web:
  image: drupal
  links:
    - db:mysql
  ports:
    - "8080:80"
  volumes:
    - /var/www/html/sites
    - /var/www/private

Note that the drupal container uses docker links. This will create a /etc/hosts entry called "mysql". Use this instead of "localhost" when running the drupal install screens.

Note

The docker compose file syntax has changed since this answer was originally drafted.

Here is the updated syntax

version: '2'
services:
  mysql:
    image: mysql
    environment:
      - MYSQL_ROOT_PASSWORD=letmein
      - MYSQL_DATABASE=drupal
      - MYSQL_USER=drupal
      - MYSQL_PASSWORD=drupal
    volumes:
      - /var/lib/mysql
  web:
    image: drupal
    depends_on:
      - mysql
    ports:
      - "8080:80"
    volumes:
      - /var/www/html/sites
      - /var/www/private

回答2:

The trick for me was to add the service name of the database container in the Drupal connection settings (settings.local.php) instead of 'localhost' or '127.0.0.1', like:

$databases['default']['default'] = array(
'database' => 'database-name',
'username' => 'root',
'password' => 'root',
'host' => 'database-container-name',
'port' => '3306',
'driver' => 'mysql',
'prefix' => '',
);

来源：https://stackoverflow.com/questions/33422546/docker-drupal-container-linked-to-mysql-container-cant-connect-to-mysql-durin

标签

mysql

drupal

Docker