Build Linux NFS Server for the enterprise on the road

nfs:network File System (Network filesystem)

file system works in user space

Rpc:remote Procedure Call (remote procedure calls)

Linux: Programs that provide RPC services

Portmap

tcp/111

udp/111

Data Interchange format between RPC:

Binary/Text

NFS: Developed by Sun

NFSV1------for use inside sun

NFSv2, NFSv3 (mainstream in rhel5.x series)

NFSV3 supports both UDP and TCP

NFSV4------Mainstream in rhel6.x series

NFSv2 and NFSv3 are stateless.

(incompatible with each version of NFS)

NFS server-side components: nfs-utils

NFS Boot:

tcp/111, udp/111------portmap start------NFS Boot

NFS Process:

NFSD------Master Service (monitor tcp/2049 and udp/2049)

MOUNTD----Accept Client mount requests (Port randomization)

Quotad----Limit Local disk quotas (port randomization)

NFS configuration file

Vim/etc/exports

/path/dir x.x.x.x/xx (permissions, attributes)

Note: Multiple clients are separated by white space characters, and each client must be followed by a parenthesis that defines the client's access attributes (such as access permissions, etc.)

such as:

/var/shaw 172.24.10.0/24 (Rw,async) 192.168.10.0/24 (Ro,sync)

Showmount-e Nfs_server Viewing the nfs_server exported file system

Showmount-a nfs_server Viewing the list of clients for mounted file systems

showmount-d nfs_server Displays the list of file systems that are mounted by the client in all exported file systems on the NFS server

Client Mount:

Mount-t NFS Nfs_server:/path/dir/path/dir

Exportfs

-A general and-R or-u use simultaneously: means to mount all file systems again or to cancel exporting all

-R Re-export

-U Cancel Export

-V Show More information

File System Export Properties:

RO Read Only

RW Read/write

Sync Synchronization

Async Async

Root_squash to map the root user to a Guest account

No_root_squash

All_squash Mapping All users to Guest accounts

Anonuid,anongid Specifies the UID and GID of the mapped guest account

such as;

Vim/etc/exports

/var/shared 172.24.10.0/24 (ro,all_squash,anonuid=510,anongid=510)

Boot Automatically mounts NFS:

Vim/etc/fstab

172.24.10.21:/var/shared/mnt/nfsNFSdefaults,_rnetdev 0 0

This article is from the "Ops Sky-opsky" blog, make sure to keep this source http://opsky.blog.51cto.com/9265055/1546393

Build Linux NFS Server for the enterprise on the road