Possible to have the script update too?

[BrianGilbert]

it would be awesome if it was possible for the script to update php mariadb nginx aegir and hostmaster components

[BrianGilbert]

Example of commands to update hostmaster:
export OLD_AEGIR_DIR=/var/aegir/hostmaster-6.x-1.7
export AEGIR_VERSION=6.x-1.8
export AEGIR_DOMAIN=aegir.ld
cd $OLD_AEGIR_DIR
drush hostmaster-migrate $AEGIR_DOMAIN /var/aegir/hostmaster-$AEGIR_VERSION