Can you put systemd units under a custom path?

There are a few ways to do this. From the documentation you linked:

When the variable $SYSTEMD_UNIT_PATH is set, the contents of this variable overrides the unit load path.

Option 1: Edit that environment variable to something like /home/me/custom-units:. The trailing colon indicates the usual load paths should also be used, with a lower priority.

Moreover, additional units might be loaded into systemd from directories not on the unit load path by creating a symlink pointing to a unit file in the directories. You can use systemctl link for this...

Option 2: Use this command. An example invocation is systemctl link /home/me/custom-units/my-custom-unit.service. This would link a single unit file into systemd so it can be started with systemctl start my-custom-unit. If there are other units in the same directory, those will need to be linked as well. Links persist until systemctl disable is run on them.

Unit files are loaded from a set of paths determined during compilation

Option 3: Compile your own systemd and change the paths in systemd.pc.in. Not for the faint of heart.

posted 5 days ago

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