After install plugin remote over GUI snapcenter host core service is unreachable

[GREGD]

Snapcenter 4.1.1.

Host is a Windows 2019 datacenter, i check and this should be supported.

I have one question i installed successfully remote plugin over GUI. All services are installed on host and running(2 plugin,core service) I can restart it.  I see also under instances th databases.

After installation i want to config the plugin but i canot do it. first services are running. after 5 minutes host ist down and i restart all 3 services on host. i also restart the snapcenter server . but still host is down. under details i see snapcenter host core service is unreachable.

Can someone help me?

[GREGD]

now i check the logs of plugin installation

SnapManagerWeb_164020.log ERROR 2020-04-23T18:41:10.5085362+02:00 ERROR SnapManagerWeb_164020 PID=[7016] TID=[39] Exception in RefreshPluginsOnHost: 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 192.168.100.64:8145 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 --- at System.Net.WebClient.UploadDataInternal(Uri address, String method, Byte[] data, WebRequest& request) at System.Net.WebClient.UploadString(Uri address, String method, String data) at SnapMgrHelper.RestAdapter.InvokeXML[TReq,TRes](TReq request, String methodType, String remoteURL, Boolean xmlSerializer, Boolean removeXMLNamespace, Boolean dataContractDeserializer, Boolean logRequest, Boolean logResponse) at SnapManager.SMSDAL.HostManageDAL.DiscoverPlugins(SmDiscoverPluginRequest drequest) at SnapManager.SMSDAL.HostManageDAL.RefreshPluginsOnHost(SmDiscoverPluginRequest request)

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SnapManagerWeb_164020.log ERROR 2020-04-23T18:41:10.5085362+02:00 ERROR SnapManagerWeb_164020 PID=[7016] TID=[39] 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 192.168.100.64:8145 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 --- at System.Net.WebClient.UploadDataInternal(Uri address, String method, Byte[] data, WebRequest& request) at System.Net.WebClient.UploadString(Uri address, String method, String data) at SnapMgrHelper.RestAdapter.InvokeXML[TReq,TRes](TReq request, String methodType, String remoteURL, Boolean xmlSerializer, Boolean removeXMLNamespace, Boolean dataContractDeserializer, Boolean logRequest, Boolean logResponse) : Detailed Exception Unable to connect to the remote server. No connection could be made because the target machine actively refused it 192.168.100.64:8145 : BaseException System.Net.Sockets.SocketException (0x80004005): No connection could be made because the target machine actively refused it 192.168.100.64:8145 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)

[mrahul · Accepted solution]

This is a known issue with SnapCenter 4.1.1/4.2 versions with Windows 2019 Server OS

Make sure you start the Microsoft ISCSI Initiator server service on the Plugin host.

TITLE: SnapCenter Server 4.1.1 reports Windows 2019 hosts as down or inaccessible with no plugins installed

DESCRIPTION: If SnapCenter Server 4.1.1 is installed on a Windows 2019 host, it will report that the host is down or inaccessible with no plugins installed. The overall status of the service is marked as Stopped.

WORKAROUND:
1. On SQL node/nodes: 

•  Open Windows Explorer
•  Navigate to folder "<sc_install_drive>:\Program Files\NetApp\SnapCenter Plug-in for Microsoft Windows"
•  Modify the file "SnapDriveService.exe.Config" and add the below line under <appsettings>:

<add key="usecmdletforinitiatordiscovery2019" value="false" />

2. Restart following services:

• "SnapCenter SMCore Service"
• "SnapCenter Plug-in for Windows Service"

3. From SnapCenter GUI refresh the assets:

• SnapCenter -> [Resources] -> [File Systems] -> [Refresh Resources]
• SnapCenter -> [Hosts]  -> <mark host xxxx> -> [Refresh VM]

Same goes for 

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Protection_and_Security/SnapCenter/SCSQL_verification_job_fails_to_discover_initiators_on_Window...