Networker add CloudBoost failed

Have you tried the steps in the NetWorker manual for that error?

Troubleshooting CloudBoost device configuration issues This section provides information about error messages that might appear when you configure the NetWorker device on the CloudBoost appliance. Cannot retrieve the version of the CloudBoost appliance This error message appears when the NetWorker server cannot determine the version of NetWorker running on the CloudBoost appliance. To resolve this issue, ensure that: l The NetWorker daemon nsrexecd is started on the appliance. From an SSH terminal, type ps -ef | grep nsr, and confirm that the nsrexecd process appears. If the nsrexecd daemon does not appear, type sudo networker start to start the nsrexecd process on the appliance. l Forward and reverse name resolution is correctly configured for the CloudBoost appliance and the NetWorker server host.

I didn't find that I can access CloudBoost with any user to executing the command. so how can I sovle this problem? And if the CloudBoost have no the  nsrexecd process and the networker service didn't exist, how to sovle it?