If you run into the following errors attempting to start services via systemctl in centos-7 or other systemd based infrastructure containers:
# systemctl start httpd
Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xe" for details.
Create a directory
in this case, for httpd, that would be
Create a file named override.conf in that directory, i.e.:
Edit that file to contain
The service should now start properly.