move systemd files to /etc

[snubba]

To be able to install prometheus from package with systemd file, move the systemd file generated with puppet to /etc
So we can install from a package and be able to customize the systemd file via puppet.

see https://www.freedesktop.org/software/systemd/man/systemd.unit.html#Unit%20File%20Load%20Path

[brutus333]

From some point of view seems the right thing to do especially when not installing from package; however, I do not know if it will not bring some confusion to have two files for same configuration (I should test even the functionality).
Don't you think is better to change the package contained file in place (after installing the package, of course)?

[snubba]

The replacement of the file in place needs a puppet run to change it back. If you update the package via a different method, you will run on an default config.
If there is an file in /etc, the file in /lib will be ignored, so you can manage the package separate from puppet.

[ntnn]

@brutus333

The service files under /etc/systemd/system are for user-placed files, the files under /lib/systemd/system are for packaged service files. Hence changing the packaged service file goes against what these locations are for. Nevermind that - misunderstood your sentence.

Anyhow - the files under /lib are not meant for the user to change, e.g. to be updated by packages at will. This means that a packaged service file in /lib should also overwrite the changes a user made to the file in /lib.

[brutus333]

It will be incorporated in #27

[brutus333]

Changes included in #27