How NFS works with Linux cloud computing operations learning

in the process of Linux learning, there are always people who will be confused, how does the work Flow Principle of NFS?

The process of requesting data is roughly the same when accessing files through the NFS client to the server:

1) The user accesses the website program, and the program makes a request to access NFS files on the NFS client, then the client's RPC service will issue the NFS file access request through the network to port 111 of the server-side RPC service.

2) After the server-side RPC service finds the corresponding registered NFS port, then notifies the NFS client of the RPC service

3) At this point the client obtains the correct port and accesses the data online with the NFS daemon

4) After the client has successfully accessed the data, it returns to the front-end access program, informing the user of the access results. Then, as a site user, a single access operation is completed.

Because all of the features of NFS need to be registered with the RPC service, only the RPC service can obtain the port number, PID, and IP that NFS listens to on the host for each function of the NFS service. NFS has the assistance of RPC service to successfully provide services to the outside. So to start the RPC service, the NFS service then starts, and the client does not need to start the NFS service, but it needs to start the RPC service.

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How NFS works with Linux cloud computing operations learning