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31 lines
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31 lines
1.8 KiB
Text
[#mapping-runlevels-to-targets]
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= Mapping runlevels to targets
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_Systemd_ targets serve a similar purpose to SysVinit runlevels but act a little differently. Each target has a name instead of a number and each serves a specific purpose. _Systemd_ implements some targets by inheriting all of the services of another target and adding additional services to it. Some _systemd_ targets mimic the common sysvinit runlevels, which means you can switch targets with the familiar `telinit RUNLEVEL` command. The runlevels assigned a specific purpose on vanilla Fedora installs (0, 1, 3, 5, and 6) have a 1:1 mapping with a specific _systemd_ target.
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However, this is not the case for user-defined runlevels 2 and 4. To make use of those runlevels, create a new named _systemd_ target such as `/etc/systemd/system/$YOURTARGET` that takes one of the existing runlevels as a base, make a directory `/etc/systemd/system/$YOURTARGET.wants`, and then symlink the additional services to enable into that directory.
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The following is a mapping of SysVinit runlevels to _systemd_ targets.
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[cols="2,5,5",options="header"]
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.Runlevel to target mapping
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|===
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|Sysvinit Runlevel |systemd Target |Notes
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|0 |runlevel0.target, poweroff.target |Halt the system.
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|1, s, single |runlevel1.target, rescue.target |Single user mode.
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|2, 4 |runlevel2.target, runlevel4.target, multi-user.target
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|User-defined/Site-specific runlevels. By default, identical to 3.
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|3 |runlevel3.target, multi-user.target |Multi-user, non-graphical.
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Users can usually login via multiple consoles or via the network.
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|5 |runlevel5.target, graphical.target |Multi-user, graphical. Usually
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has all the services of runlevel 3 plus a graphical login.
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|6 |runlevel6.target, reboot.target |Reboot
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|emergency |emergency.target |Emergency shell
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|===
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