Automatic upgrades with Debian packages
1. Prerequisites: Adding repositories, archives keys and backports
If you are running Debian Squeeze or Ubuntu Lucid (10.04) and above, you'll first need to go through steps 1 through 3 of Automatic install on Debian.
2. Regular update process
Note that you can upgrade Aegir in steps. Upgrading your backend to the Debian package should be as simple as running:
apt-get install aegir-provision
Upgrading the frontend to the Debian package works identically:
apt-get install aegir-hostmaster
If you want to upgrade all packages in one shot, use:
apt-get install aegir-provision aegir-hostmaster
As during install, you can use the DEBUG variable to run Drush in debugging mode:
env DEBUG=yes apt-get install aegir-hostmaster
3. Upgrading from non-Debian installs
The Debian package supports migrating from existing installs. You will need to move /var/aegir/.drush/provision out of the way before going ahead:
tar cfz /var/aegir/backups/provision.tgz /var/aegir/.drush/provision
rm -rf /var/aegir/.drush/provision
Then just install the package as if you were installing from scratch.
4. Custom distributions
If you have your own makefile, you can go ahead with the above process, but change the makefile to the one you want:
echo debconf aegir/makefile string /var/aegir/makefiles/aegir/aegir-koumbit.make | debconf-set-selections
apt-get install aegir
Usually no questions are asked when upgrading - this allows you to specify the makefile path for your custom distribution of Aegir, even if you're upgrading. It's also how you can switch distributions.
5. Rolling back the upgrade
If something went wrong with the upgrade, you can rollback by deleting the hostmaster site and redeploying on the older platform:
drush @hostmaster provision-delete
vi ~/.drush/hostmaster.alias.drushrc.php
...And edit the alias to make the following changes:
1. change the platform to point to the older platform alias
2. change the platform root path
3. change the site path
During the upgrade, a backup was done and you need to find which backup file it was in the backups directory. Use this backup to redeploy the older platform:
drush @hostmaster provision-deploy ~/backups/hostmaster.date.tgz
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#1
In the course of a normal update (adding php5-xsl) we were a little worried by the following messages:
The following extra packages will be installed:aegir-provision (..other php5 updates..)
The following packages will be REMOVED:
aegir aegir-hostmaster (..other php5 updates..)
I'd have liked to see a message on this wiki page saying "If you get this message, it's OK to say 'Yes' and everything will be replaced safely". If that is the case... It is worrying. Can this be clarified?