Question: What Is Root Squash In NFS?

How does NFS work?

NFS, or Network File System, was designed in 1984 by Sun Microsystems.

This distributed file system protocol allows a user on a client computer to access files over a network in the same way they would access a local storage file.

Because it is an open standard, anyone can implement the protocol..

Which daemon is not required to run NFS service?

To support NFS file locking, the lockd and statd daemons are run on NFS clients and servers. However, unlike previous versions of NFS, in NFS version 4, the daemons lockd, statd, mountd, and nfslogd are not used.

What is an NFS client?

The computers that are accessing that file system are said to be clients. The NFS service enables any given computer to access any other computer’s file systems and, at the same time, to provide access to its own file systems. A computer can play the role of client, server, or both at any given time on a network.

How do I check NFS exports?

Viewing the Exported NFS and CIFS SharesTo view the list of exported NFS and CIFS shares on the 3DFS server, on the command line, enter the following command: # showmount -e.To view the list of exported NFS and CIFS shares on the NFS-Ganesha server, on the command line, enter the following command: # ganesha_mgr show_exports.

What is meaning of No_root_squash in NFS?

The option ‘no_root_squash’ basically allows the root user on the client to access/create files on the NFS server as root. Typically this is needed if you are hosting root filesystems on the NFS server (for diskless clients).

What is the purpose of the ETC exports file?

The file /etc/exports contains a table of local physical file systems on an NFS server that are accessible to NFS clients. The contents of the file are maintained by the server’s system administrator. Each file system in this table has a list of options and an access control list.

What port is NFS?

Allow TCP and UDP port 2049 for NFS. Allow TCP and UDP port 111 ( rpcbind / sunrpc ).

What are NFS mounts?

Network File System (NFS) is a distributed file system protocol that allows you to share remote directories over a network. … On Linux and UNIX operating systems, you can use the mount command to mount a shared NFS directory on a particular mount point in the local directory tree.

How do I view NFS exports?

Run the showmount command with the server name to check which NFS exports are available. In this example, localhost is the server name. The output shows the available exports and the IP which they are available from. The below example shows 3 exports available from the 10.10.

How do I modify etc exports?

StepsOpen the /etc/exports file in a text editor on an NFS client that has root access to the storage system.Make your changes.Save the file.

What is NFS export?

NFS is the most common protocol for sharing files between Unix systems over a network. NFS servers export directories from their local hard disks to NFS clients, which mount them so that they can be accessed like any other directory.

What is RPC and its role in NFS?

NFS uses Remote Procedure Calls (RPC) to route requests between clients and servers, meaning that the portmap service must be enabled and active at the proper runlevels for NFS communication to occur. … NFS file locking is now done by the kernel.