Problem:
rcmd-executor service on Centos refuses to start:
[root@QA-VM-CentOS tmp]# /opt/NovaStor/DataCenter/rcmd-executor/rcmd-executor start 32334
2017-06-06 14:54:34+02:00 <DEBUG> [1470113600l] [tmpfile_manager_file_get] Created new tmp File /opt/NovaStor/DataCenter/rcmd-executor/tmp/4a53ea14-4ab7-01e7-b165-005056936e5a
...
Error creating textual authentication agent: Error opening current controlling terminal for the process (`/dev/tty'): No such device or address (polkit-error-quark, 0)
Failed to start rcmd-executor.service: Unit not found.
...
Solution:
Run
systemctl daemon-reload
and then repeat the rcmd-executor start command.