O Fedora tem provavelmente as melhores políticas de script , que cobrem a sua situação:
Why don't we....
- run 'chkconfig <service> on'?
If a service should be enabled by default, make this the default in the init script. Doing otherwise will cause the service to be turned on on upgrades if the user explicitly disabled it.
Note that the default for most network-listening scripts is off. This is done for better security. We have multiple tools that can enable services, including GUIs.
- start the service after installation?
Installations can be in changeroots, in an installer context, or in other situations where you don't want the services started.