I have a service name
serviceA in ubuntu16 and at the same time, it's a daemon.
So when I do
systemctl daemon-reload does it includes the action of
systemctl restart serviceA ?
man systemctl (perhaps the longest man page in the world):
Manager Lifecycle Commands daemon-reload Reload the systemd manager configuration. This will rerun all generators (see systemd.generator(7)), reload all unit files, and recreate the entire dependency tree. While the daemon is being reloaded, all sockets systemd listens on behalf of user configuration will stay accessible. This command should not be confused with the reload command.
There is a distinction between
Unit Commands reload PATTERN... Asks all units listed on the command line to reload their configuration. Note that this will reload the service-specific configuration, not the unit configuration file of systemd. If you want systemd to reload the configuration file of a unit, use the daemon-reload command. In other words: for the example case of Apache, this will reload Apache's httpd.conf in the web server, not the apache.service systemd unit file. This command should not be confused with the daemon-reload command. restart PATTERN... Restart one or more units specified on the command line. If the units are not running yet, they will be started.