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The knowledge of this article "how to build a NFS server under the Linux server" is not understood by most people, so the editor summarizes the following, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "how to build a NFS server under a Linux server" article.

First, install and configure nfs server

1 > for the nfs server to provide services, you must start inet, portmap,nfs, and mount

These four daemons are kept running in the background.

2 > Plan the partition or directory to be shared

3 > define parameters for the client

4 > configure nfs main configuration file: / etc/exports

5 > restart the nfs service

1. Syntax of the configuration / etc/exports file

# vi / etc/exports

/ sharedir-maproot=daemon host2

/ sharedir2-ro-network 192.168.1.0

Or use the following format

/ sharedir host3 (option)

/ sharedir 192.168.1.12 Compact 24 (option)

The first paragraph: for a shared directory, be sure to have an absolute path.

The second paragraph: some parameters, such as:-maproot=daemon indicates that if the visitor is a root user, it will be converted to a daemon user;-ro: indicates read-only permission.

The third paragraph: indicates that the client allowed to access can be a host, such as host2; or a network segment. The host can be represented by a domain name or ip. The domain name supports wildcards but does not include dots. For example, * .example.net, it can mean e1.example.net or e2.example.net, etc., but not s1.e1.example.net.

The third format means that those read-write, read-only and other parameters can be written in parentheses and separated by commas.

2. Activate services portmap and nfsd

After portmap is activated, a sunrpc service with port number 111will appear

# service portmap restart

# service nfs restart

3. Client configuration

3.1 enable portmap service

3.2 Mount a shared directory using the mount command

Mount-t type-o option device dir

# mount-t nfs-o hard 192.168.1.22:/sharedir / tmp/

In addition to using the mount command, users can also mount it using / etc/fstab or autofs.

II. Nfs server configuration example

Nfs server-side configuration:

1. First check whether the following software packages are installed on the server side

# rpm-qa | grep nfs

Nfs-utils-1.0.9-16.e15

Nfs-utils-lib-1.0.8-7.2

two。 Configure nfs server-side configuration file: / etc/exports

/ sharedir: is a shared directory with permissions restricted by share permissions (rw) and local permissions.

192.168.1.22 Compact 24: allow all machines in the 192.168.1.0 network segment to access

# vim / etc/exports

# cat / etc/exports

/ sharedir 192.168.1.22 Compact 24 (rw)

3. Restart the nfs service

# service nfs restart

Nfs client configuration:

1. Confirm the installation of the portmap package

# rpm-qa | grep portmap

Portmap-4.0-65.2.2.1

two。 Enable the portmap service

# service portmap restart

3. View a nfs server shared directory

192.168.1.22: the ip address of the nfs server

# showmount-e 192.168.1.22

Export list for 192.168.1.22:

/ sharedir 192.168.1.22/24

4. Mount the shared directory of the server

-t nfs: indicates the file system format of the mounted file, or it can be omitted

# mount-t nfs 192.168.1.22:/sharedir / mnt/

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