Recent versions of NUT have a *nut.target* unit that collects all of the NUT-related services. Enabling any of the services individually does effectively nothing, as it only adds the service as a `Wants` dependency for *nut.target*, and that unit already has dependencies for all of them. Thus, in order for the service to start at boot, *nut.target* has to be enabled instead. In situations where only *nut-monitor* should be enabled, enabling *nut.target* is inappropriate, since that enables *nut-driver* and *nut-server* as well. It's not clear why upstream made this change (it was part of a [HUGE pull request][0]), but restoring the desired behavior is easy enough by clearing the dependencies from *nut.target*. Services that we want to start automatically can still be enabled individually, and will start as long as *nut.target* is enabled. [0]: https://github.com/networkupstools/nut/pull/330 |
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