I have installed MySQL on my Arch Linux server. I moved the data directory to a place under /home, where my RAID volume is mounted. I noticed that mysqld will not start in this configuration by default since the systemd unit contains the setting ProtectHome=true.
I want to override just this setting. I don't want to re-specify the ExecStart or similar commands, in case they change when the package is upgraded.
I tried making a simple file at /etc/systemd/system called mysqld.service and added only these lines:
[Service]
ProtectHome=false
This doesn't work as it looks like the service in /etc replaces, not overrides, the system service.
Is there a way to override settings in systemd unit files this way without directly modifying the files in /usr/lib/systemd/system? (which is what I have done for now as a temporary fix, although that will end up reverted if the package is updated)
You may override a systemd unit file using
systemctl edit mysqld.service
Any statements made in the override file will take priority.
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