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SnapCenter Linux plug-in installation fails to start SPL on RHEL 8.4 and higher

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Applies to

  • SnapCenter Plug-in for Oracle (SCO) on Linux 4.5
  • SnapCenter Plug-in for SAP HANA (SCHANA) on Linux
  • SnapCenter Plug-in for Creator (SCC) on Linux
  • RedHat Enterprise Linux (RHEL) 8.4

Issue

After the installation of the plug-in on Linux runs through without any errors, the post-installation check, accessing the SPL to check, fails with:
ERROR SnapManagerWeb_<JOB> PID=[3772] TID=[225] WebException caught while invoking https://<RHEL-HOST-FQDN>:8145...DiscoverPlugin
ERROR SnapManagerWeb_<JOB> PID=[3772] TID=[225] WebException Encountered, Response null
ERROR SnapManagerWeb_<JOB> PID=[3772] TID=[225] Exception in method: InvokeXML.
 System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it <RHEL-HOST-IP-ADDRESS>:8145
 at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
 at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
 --- End of inner exception stack trace ---
DEBUG SnapManagerWeb_<JOB> PID=[3772] TID=[225] Unable to discover plugins from remote host
DEBUG SnapManagerWeb_<JOB> PID=[3772] TID=[225] Plugin services are not running with gMSA account, remove mapping if exists.
INFO  SnapManagerWeb_<JOB> PID=[3772] TID=[225] Enter RemoveHostTogMSAMapping
DEBUG SnapManagerWeb_<JOB> PID=[3772] TID=[225] No gMSA mapping exists for host : <RHEL-HOST-FQDN>
INFO  SnapManagerWeb_<JOB> PID=[3772] TID=[225] Exit RemoveHostTogMSAMapping
INFO  SnapManagerWeb_<JOB> PID=[3772] TID=[225] Exit plug-in discover on host refresh.
 
Note: this happens also when no Plug-in has been installed yet, so the first instance of this error in the log, before uploading and running the installer, is normal!

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