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drupal-settings.md

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Drupal settings

DB connection settings

Containers do not have static IP addresses assigned. DB connection settings can be obtained from the environment variables.

Below are sample settings for Drupal 7 and Drupal8.
If you change the DB node name in docker-compose.yml (e.g. mysql instead of db) then this has to be updated, since variable names will change as well.

Drupal 7

$databases = array (
  'default' => 
  array (
    'default' => 
    array (
      'database' => getenv('DB_1_ENV_MYSQL_DATABASE'),
      'username' => getenv('DB_1_ENV_MYSQL_USER'),
      'password' => getenv('DB_1_ENV_MYSQL_PASSWORD'),
      'host' => getenv('DB_1_PORT_3306_TCP_ADDR'),
      'port' => '',
      'driver' => 'mysql',
      'prefix' => '',
    ),
  ),
);

Drupal 8

$databases['default']['default'] = array (
  'database' => getenv('DB_1_ENV_MYSQL_DATABASE'),
  'username' => getenv('DB_1_ENV_MYSQL_USER'),
  'password' => getenv('DB_1_ENV_MYSQL_PASSWORD'),
  'prefix' => '',
  'host' => getenv('DB_1_PORT_3306_TCP_ADDR'),
  'port' => '3306',
  'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
  'driver' => 'mysql',
);

File permissions fix

With NFS mounts Drupal may complain about files directory not being writable. This is a "false-negative" however can be annoying and break certain things. For a workaround add the following to your setting.php file.

Drupal 7

# Workaround for permission issues with NFS shares in Vagrant
$conf['file_chmod_directory'] = 0777;
$conf['file_chmod_file'] = 0666;

You may also have to reset permissions on the existing files folder. The following command will recursively set folders to 777 (rwx) and files to 666 (rw)

chmod -R +rwX files

Memcache settings

  1. Uncomment the memcached service definition section in docker-compose.yml to start using memcached.

  2. Add the following lines to settings.php to point Drupal to the memcached node. Replace </path/to/memcache-module> with path to memcache module in your project. E.g. sites/all/modules/contrib/memcache

// Memcache
$conf['cache_backends'][] = '</path/to/memcache-module>/memcache.inc';
$conf['cache_default_class'] = 'MemCacheDrupal';
$conf['cache_class_cache_form'] = 'DrupalDatabaseCache';
$conf['memcache_servers'] = array(
  'memcached:11211' => 'default',
);