Linux network services 12--NFS Shared Services

Linux Network services -NFS Shared Services I. introduction to NFS

Port number: TCP,UDP 111 Ports

TheNFSNetwork File system, a Network File system protocol based on TCP/IP transmission, was originally Company Development. By using the NFS protocol, clients can access shared resources on a remote server as if they were accessing a local directory.

NFS does not have a user authentication mechanism, and the data is transmitted in clear text on the network, so the security is very poor, generally can only be used in the LAN. The implementation of the NFS service relies on the RPC(remoteprocess Call) remoting mechanism, To complete the remote-to-local mapping process.

in the The CentOS 6 system requires the installation of nfs-utils,rpcbind packages to provide NFS sharing Services, the former for NFS shared Publishing and access, which is used for RPC support.

ii. Publishing shared resources using NFS (server side)

Modify the Master profile /etc/exports(this file is an empty file)

RW: Read and write

RO: Read-only

Sync: Synchronous Write

No_root_squash: gives the local root permissionwhen the client is accessed as root (default is root_squash , will act as Nfsnobody user down Right treatment)

wildcard characters are allowed:? *

three , accessing in the client NFS shared resources

Modify the 192.168.1.108 machine /crushlinux/index.html file, refresh the browser to see if it is synchronized

Modify the/etc/fstab table to enable automatic mount on boot

Linux network services 12--NFS Shared Services