Package-based Upgrade

You can only use this upgrade method if you have previously installed the Content Engine as described in Package-based Installation. Otherwise you need to follow the method described in Old-style Upgrade.

All you need to do to upgrade your Content Engine (including any plug-ins that you have installed from apt / rpm packages) is:

Read the release notes for your planned upgrades (both Content Engine and plug-ins). Make a note of any special tasks that need to be carried out in connection with the upgrades. Some changes, for example, require you to run a database upgrade script after the upgrade.
Log in as root on your assembly-host and on each of your engine-hosts, and enter the following commands:
```
# apt-get update
# apt-get upgrade
```
Carry out any required upgrade tasks. For general information about how to carry out a database upgrade should that be necessary, see: Database Upgrades.