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This article describes how to configure Drush site aliases that work with Drupal sites hosted on A2 Hosting accounts.
Drush site aliases enable you to set up SSH-based connections from a local computer to a remote Drupal site. (You can also configure site aliases for use with local Drupal sites, but this article focuses on remote Drupal sites only.) With correctly configured Drush site aliases, you can invoke Drush commands on your local computer that run on remote Drupal sites.
The command-line environment used by Drush opens up many possibilities for Drupal site management. For example, you could use Drush site aliases in a Bash script to update multiple remote Drupal sites all at once.
To define a Drush site alias, follow these steps:
Copy and paste the following sample configuration into the sitename.aliases.drushrc.php file. Replace sitename with the site name you used in the filename, replace username with your own A2 Hosting account username, and replace example.com with the domain name where the Drupal site is hosted. If you installed Drupal in a subdirectory beneath the public_html directory, add it to the root path value as well:
sitename'] = array( 'root' => '/home/username/public_html', 'remote-host' => 'example.com', 'remote-user' => 'username', 'ssh-options' => '-p 7822' ); ?>
This configuration shows only the essential settings for connecting to a remote Drupal site. There are many other options available for site alias configuration files.
After you configure a remote site alias, you can use it to manage Drupal sites on your A2 Hosting account. For example, to view the status of a remote Drupal site, type the following command. Replace sitename with the site name that you used to name the sitename.aliases.drushrc.php file:
drush @sitename status
Similarly, to update the remote site, type the following command:
drush @sitename up
You can run any drush command by prefixing it with @ and the site alias name.
To list the site alias files on your local computer, type the following command:
The site aliases are listed under the Drush alias files heading.