Simple setup for NFS in Linux

NFS is a good shared storage system, but performance is not as good under high load conditions.
This is a long time ago to write something, there is nothing wrong hope everyone correct:)
10.0.0.1-nfs Server
10.0.0.2-nfs Client
On NFS server:
===============
Shared directory:/nfspool
NFS Running User: Nfsnobody
# Mkdir/nfspool
# Vi/etc/exports
/nfspool 10.0.0.2 (rw,async,anonuid=65534,anongid=65534)
# mkdir-p/nfspool
# chown Nfsnobody:nfsnobody/nfspool
# Chown-r nfsnobody:nfsnobody/nfspool/.
# service Portmap Start
# service Nfslock Start
# Service NFS Start
On the NFS client:
===============
Remote NFS shared directory mount point:/usr/local/nfs
# service Portmap Start
# Mkdir/usr/local/nfs
# chown Nfsnobody:nfsnobody/usr/local/nfs
# chmod 777/usr/local/nfs
# mount-t Nfs-o soft,intr,bg,timeo=50 10.0.0.1:/nfspool/usr/local/nfs
# Vi/etc/fstab
10.0.0.1:/nfspool/usr/local/nfs NFS soft,intr,bg,timeo=50 0 0
Notes & Notes
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1. Exports parameter description
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RW: Read/write mode;
Async: Asynchronous disk read and write;
Anonu (g) ID: Specifies the anonymous user that NFS uses when it operates Uid/gid
2. NFS Management Commands
---------------
SHOWMOUNT-E perform this command on NFS server to display all shared volumes on NFS server;
SHOWMOUNT-E 10.0.0.1 Perform this command on the NFS client to display all shared volumes on NFS server;
EXPORT-AV Export all volumes according to/etc/exports;
EXPORT-RV re-export all volumes, add new items in/etc/exports, delete non-existent items, update changed items;
3. NFS-related files
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/etc/exports
is one of the most basic configuration files for NFS server, which lists the shared file systems and the hosts that allow access to those file systems.
/proc/fs/nfs/exports
The kernel view of the exported file list, including the exported parameters.
/var/lib/nfs/etab
The status file, which lists the current advanced list. This file contains all of the items in the same format in/etc/exports, along with the items that were imported manually by Exportfs-i.
/var/lib/nfs/rmtab
A status file that lists the remote client list for the attached export file.
/var/lib/nfs/xtab
Status file, the current bottom-level export manifest.
4. The writing rules of client in/etc/exports
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(1) Single host
You can use a short name and a fully qualified name, or use an IP address, such as student01, student01.flying.com.cn, or 192.168.10.1, to be a valid host name.
(2) Net-group
You can list the entire set of hosts that are defined in the/etc/netgroup file or in the NFS Subnet group map. The net group name begins with @.
(3) Wildcard host
*.discuz.net *.*.comsenz.com
(4) Mask
192.168.1.0/255.255.255.0
5. Order of starting and stopping
-----------
Start:
Portmap
Nfslock
Nfs
Stop it:
Nfslock
Nfs
Portmap
6. Security
---------
portmap:111
nfs:2049
Prevents the use of IP spoofing and RPC redirection techniques to attack through the LO Loopback and to qualify the authorized host:
Iptables-a input-p udp-d 127.0.0.1--dport 111-j DROP
Iptables-a input-p udp-d 127.0.0.1--dport 2049-j DROP
Iptables-a input-p udp-s 10.0.0.2--dport 111-j ACCEPT
Iptables-a input-p udp-s 10.0.0.2--dport 2049-j ACCEPT

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Optimized for NFS

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