- Table of contents
- Installing Drush for working with Drupal 6-8 and Backdrop
- Install Drush 6, 7 and 8 for all users
- Install Drush on May First/People Link (MFPL) and other shared hosting environments
- Install and update Drush Backdrop commands
- Create script to automatically switch Drush versions based on git configuration setting
- Set drush.version git variable on a per-project basis
- Update Drush remote site aliases to use correct Drush scripts
- Additional resources
Installing Drush for working with Drupal 6-8 and Backdrop¶
Palante has a few reasons to run different versions of Drush:
- We're currently supporting or building Drupal 6, 7, 8 and Backdrop sites.
- We've fallen victim to the weird gotcha where Drush destroys your git repo and other non-Drupal files that seems to happen more often with Drush 8 than other versions.
- Some of our clients' servers don't support anything newer than Drush 6; if we run remote commands against those servers, like
drush sql-sync, we need to use Drush 6 locally, too.
Below is a solution that allows us to use Drush 6, 7 and 8 in the same environment.
Install Drush 6, 7 and 8 for all users¶
I've followed the "To install for all users on the server" instructions under "Composer - One Drush for all Projects" in the Drush 7 installation documentation, adapted for different versions of Drush.
TODO: Update the instructions below to indicate that running
composer install as root is a security risk, give alternative approach.
Some of our clients' servers aren't capable of running anything newer than Drush 6. If you need to run commands like
drush sql-sync against those servers from your local or dev environment, you'll need Drush 6 installed. Run the following commands as root or using
git clone https://github.com/drush-ops/drush.git -b 6.6.0 /usr/local/src/drush6 cd /usr/local/src/drush6 composer install ln -s /usr/local/src/drush6/drush /usr/bin/drush6
To install Drush 7, run the following commands as root or using
git clone https://github.com/drush-ops/drush.git -b 7.4.0 /usr/local/src/drush7 cd /usr/local/src/drush7 composer install ln -s /usr/local/src/drush7/drush /usr/bin/drush7
Replace "7.4.0" with the tag of the most recent stable 7.x release (see https://github.com/drush-ops/drush/releases).
Then install Drush 8, again running these commands as root or using
git clone https://github.com/drush-ops/drush.git -b 8.1.18 /usr/local/src/drush8 cd /usr/local/src/drush8 composer install ln -s /usr/local/src/drush8/drush /usr/bin/drush8
Replace "8.1.18" (last updated in this documentation on 2/4/19) with the tag of the most recent stable 8.x release (see https://github.com/drush-ops/drush/releases)
You can now use the
drush8 commands to run each specific version of Drush.
Updating Drush when installed this way¶
To update a Drush installation installed in this manner, run the following commands within the
git fetch git checkout tags/<new version> -b <new version> composer install
<new version> with the most recent stable release of the Drush version you're updating.
Install Drush on May First/People Link (MFPL) and other shared hosting environments¶
Primarily drawn from this MFPL ticket; thanks Ivan!
First, install Composer following these instructions.
Then to install Drush:
echo 'export PATH="$HOME/.composer/vendor/bin:$PATH"' >> ~/.bashrc source ~/.bashrc cd ~/<organization.org>/bin php composer.phar global require drush/drush:7.4.0 which drush
Note that sometimes
cgi-bin is present on MFPL sites instead of
If using Drush aliases, you may need to specify the new Drush installation in the shared
aliases.drushrc.php file or a local aliases file. Here's an example:
$aliases['organization'] = array( 'remote-host' => 'organization.org', 'remote-user' => 'organization', 'root' => '/home/members/organization/sites/organization.org/web', 'uri' => 'organization.org', 'path-aliases' => array( '%drush-script' => '/home/members/organization/sites/organization.org/users/organization/.composer/vendor/bin/drush', '%dump-dir' => '~/drush-backups', '%files' => '/home/members/organization/sites/organization.org/web/sites/default/files',), );
Install and update Drush Backdrop commands¶
In order for Drush to work with Backdrop, you must install the Drush Backdrop commands within the Drush 8 installation itself.
Assuming that Drush 8 is installed in
/usr/local/src/drush8, as specified above:
git clone https://github.com/backdrop-contrib/drush.git /usr/local/src/drush8/commands/backdrop
To update Drush Backdrop commands later, run
git pull origin from within the
Create script to automatically switch Drush versions based on git configuration setting¶
As per this excellent guide from Marc van Gend of Triquanta, I've set up a script to let us switch between versions of Drush on a project-by-project basis using git configuration settings.
The script, which lives at
/usr/bin/drush and is therefore called whenever someone runs the
#!/bin/bash version=$(git config --get drush.version) if [ "$version" = '8' ]; then drush8 "$@" elif [ "$version" = '6' ]; then drush6 "$@" else drush7 "$@" fi
Set drush.version git variable on a per-project basis¶
In this configuration, Drush 7 is the default version of Drush. For the script above to automatically switch to a non-default version of Drush for a given project, set the
drush.version value in the git repo for the project by running
git config drush.version <version>. For example:
$ drush --version Drush Version : 7.2.0 $ git config drush.version 8 $ drush --version Drush Version : 8.0.5
Update Drush remote site aliases to use correct Drush scripts¶
If you've got Drush site aliases set up for remote sites on servers where multiple versions of Drush are available, update your
aliases.drushrc.php file to include the specific drush script that should be used on the remote site. See the example.aliases.drushrc.php file if you need help creating your
aliases.drushrc.php file or learning about
aliases.drushrc.php file with
$aliases['drupal8'] = array( 'remote-host' => 'fake-dev-server.palantetech.coop', 'remote-user' => 'jack', 'root' => '/var/www/dev/drupal8', 'uri' => 'drupal8.palantetech.coop', 'path-aliases' => array( '%drush-script' => '/usr/bin/drush8', ) ); $aliases['drupal7'] = array( 'remote-host' => 'fake-dev-server.palantetech.coop', 'remote-user' => 'jack', 'root' => '/var/www/dev/drupal7', 'uri' => 'drupal7.palantetech.coop', 'path-aliases' => array( '%drush-script' => '/usr/bin/drush7', ) );