Infrastructure Software

Hello guys. I am pretty new to Oracle, and I am trying to learn it the best I can

So what I'm trying to do is I am trying to create a cluster in Oracle VM Manager. I have installed Oracle Linux 7.5 and OVS 3.4 (both on Virtual Box) and now what I am trying to do is I am trying to create a NFS on my Oracle Linux 7.5. So what I did was I followed some tutorials (because I have no idea what to do) and what they said is to create for example 1 directory /public and 2 directories inside of it for example nfs1 and nfs2. Then you add them to /etc/exports as /public *(rw,sync) and restart the rpcbind and nfs services. But when I try to add File Server in the Oracle VM Manager it gives me this error on Refresh file server:

Message: OVMAPI_B000E Storage plugin command [storage_plugin_listFileSystems] failed for storage server [0004fb0000090000c4785e7010446003] failed with [com.oracle.ovm.mgr.api.exception.FailedOperationException: OVMAPI_4010E Attempt to send command: storage_plugin_listFileSystems to server: oracle.example.com failed. OVMAPI_4004E Sync command failed on server: 172.16.0.1. Command: storage_plugin_listFileSystems, Server error: <class 'OSCPlugin.OperationFailedEx'>:'Unable to access file system at 172.16.0.5: clnt_create: RPC: Port mapper failure - Unable to receive: errno 113 (No route to host)\n' [Sat Jun 02 18:22:07 CEST 2018]] OVMAPI_4010E Attempt to send command: storage_plugin_listFileSystems to server: oracle.example.com failed. OVMAPI_4004E Sync command failed on server: 172.16.0.1. Command: storage_plugin_listFileSystems, Server error: org.apache.xmlrpc.XmlRpcException: <class 'OSCPlugin.OperationFailedEx'>:'Unable to access file system at 172.16.0.5: clnt_create: RPC: Port mapper failure - Unable to receive: errno 113 (No route to host)\n' [Sat Jun 02 18:22:07 CEST 2018]

Description:	Refresh File Server: nfsserver