I am learning more about systemd which command correctly picks up changes to a service unit configuration made under systemd ?
systemctl daemon-restart systemctl reboot systemctl daemon-reload systemctl daemon-reexec 1 Answer
systemctl daemon-reload Is the one you want to use. It will reload the systemd manager configuration. This will rerun all generators, reload all unit files, and recreate the entire dependency tree.
systemctl daemon-reexec Will reexecute the systemd manager. This will serialize the manager state, reexecute the process and deserialize the state again. This command is of little use except for debugging and package upgrades. Sometimes, it might be helpful as a heavy-weight daemon-reload.
systemctl reboot Will reboot the system and as a result, changes to services configuration will be picked up after the reboot.
systemctl daemon-restart
Will not work. daemon-restart is not a valid argument for systemctl
