NFS for the Linux file service

NFS--------Network File system

NFS Plots

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Role: Data sharing between Linux servers

Software:

Nfs-utils

Rpcbind

[Email protected] ~]# rpm-q Rpcbind

Rpcbind-0.2.0-32.el7.x86_64

[Email protected] ~]# rpm-q nfs-utils

Nfs-utils-1.3.0-0.21.el7.x86_64

[Email protected] ~]#

Catalog Export File---/etc/exports

File format:

Directory name client address (permissions)

Client Address:

IP address 192.168.1.1

Network Segment 192.168.1.0/24

*

Permissions:

Ro Read Only

RW Read/write

Sync Synchronization

Async Async

All_squash Client All users upload files that belong to Nfsnobody

Root_squash The owner of the file uploaded by the root user of the client will be mapped to Nfsnobody

No_root_squash Client root user is still the root of the uploaded file

Anonuid=<number>

Anongid=<number>

Example:

Share local directory/webdata via NFS, allow 192.168.122.121 to mount as read-only

[Email protected] ~]# Mkdir/webdata

[Email protected] ~]# touch/webdata/{1..10}.html

[Email protected] ~]# Cat/etc/exports

/webdata192.168.122.121 (RO)

[Email protected] ~]#

[Email protected] ~]# systemctl restart Rpcbind

[Email protected] ~]# systemctl restart Nfs-server

[Email protected] ~]# Systemctl enable Nfs-server

[Email protected] ~]# showmount-e localhost

Export list for localhost:

/webdata 192.168.122.121

[Email protected] ~]#

Client:

[email protected] ~]# Mount 192.168.122.105:/webdata/www/

[Email protected] ~]# ls/www/

10.html 1.html 2.html 3.html 4.html 5.html 6.html 7.html 8.html 9.html

Auto Mount:

# Vim/etc/fstab

192.168.122.105:/webdata/www NFS Defaults 0 0

Example 2:

Shared local directory/mysqldata via NFS, allowing 192.168.122.121 to mount in read-write mode

[Email protected] ~]# Mkdir/mysqldata

[Email protected] ~]# Touch/mysqldata/{1..10}.sql

[Email protected] ~]# chmod o+w/mysqldata/

[Email protected] ~]# Vim/etc/exports

...

/mysqldata192.168.122.121 (rw)

[Email protected] ~]# Exportfs-rav

Exporting 192.168.122.121:/mysqldata

Exporting 192.168.122.121:/webdata

[Email protected] ~]#

Client:

[Email protected] ~]# Vim/etc/fstab

192.168.122.105:/mysqldata/database NFS Defaults 0 0

[Email protected] ~]# mount-a

[Email protected] ~]# df-h

File system capacity has been used with available% mount points

/dev/mapper/centos-root 7.3G 4.4G 3.0G 60%/

Devtmpfs 230M 0 230M 0%/dev

Tmpfs 245M 0 245M 0%/dev/shm

Tmpfs 245M 4.7M 240M 2%/run

Tmpfs 245M 0 245M 0%/sys/fs/cgroup

/dev/mapper/centos-home 2.0G 33M 2.0G 2%/Home

/DEV/VDA1 512M 141M 372M 28%/boot

Tmpfs 49M 0 49M 0%/run/user/0

192.168.122.105:/webdata 7.3G 3.6G 3.8G 49%/www

192.168.122.105:/mysqldata 7.3G 3.6G 3.8G 49%/database

This article is from the "lyw666" blog, make sure to keep this source http://lyw666.blog.51cto.com/12823216/1957472

NFS for the Linux file service