1.10. Finding the systemd service dependencies

Provides

Specifies the boot facility name of the service, that can be referenced in other init scripts (with the "$" prefix). This is no longer needed as unit files refer to other units by their file names.

-

Required-Start

Contains boot facility names of required services. This is translated as an ordering dependency, boot facility names are replaced with unit file names of corresponding services or targets they belong to. For example, in case of postfix, the Required-Start dependency on $network was translated to the After dependency on network.target.

After, Before

Should-Start

Constitutes weaker dependencies than Required-Start. Failed Should-Start dependencies do not affect the service startup.

After, Before

Required-Stop, Should-Stop

Constitute negative dependencies.

Conflicts