Centos7 set up NFS file sharing storage

Centos7 set up NFS file sharing storage

NFS Overview;

Overview: NFS is a network file system protocol based on TCP / IP transmission, originally developed by the SUN. By the NFS protocol, clients can access the shared resources of the remote server in the same directory as the local access. NFS was excellent support devices and the like such as a NAS storage network. LVS is also shared storage of choice.

Environment: Centos7.6 server IP: 192.168.4.84 Client IP: 192.168.4.83

Server install nfs-utils, rcpbind package;

[root@nfs ~]# yum -y install nfs-utils rpcbind

Set boot from the start;

[root@nfs ~]# for i in rpcbind nfs;do systemctl enable $i; done

Create a shared file directory;

[root@nfs ~]# mkdir /opt/docx

To the shared directory permissions;

[root@nfs ~]# chmod 777 /opt/docx/

Modify the configuration file, authorize;

[root@nfs ~]# vi /etc/exports
/opt/docx       192.168.4.*(rw,sync,no_root_squash)
#注解：
#文件格式：目录 主机（权限）
#权限：rw读写  ro只读  sync同步写入  no_root_squash表示客户机以root身份访问时，赋予其本地root权限，默认是root_squash，表示以nfsnobody用户降权使用

Start Service

[root@nfs ~]# systemctl start rpcbind
[root@nfs ~]# systemctl start nfs

View port

[root@nfs ~]# netstat -utpln |grep rpc
tcp        0      0 0.0.0.0:20048           0.0.0.0:*               LISTEN      19822/rpc.mountd    
tcp        0      0 0.0.0.0:38173           0.0.0.0:*               LISTEN      19794/rpc.statd     
tcp6       0      0 :::20048                  :::*                    LISTEN      19822/rpc.mountd    
tcp6       0      0 :::52574                  :::*                    LISTEN      19794/rpc.statd     
udp        0      0 0.0.0.0:54577           0.0.0.0:*                           19794/rpc.statd     
udp        0      0 0.0.0.0:20048           0.0.0.0:*                           19822/rpc.mountd    
udp        0      0 0.0.0.0:869             0.0.0.0:*                           19774/rpcbind       
udp        0      0 127.0.0.1:890           0.0.0.0:*                           19794/rpc.statd     
udp6       0      0 :::20048                :::*                                19822/rpc.mountd    
udp6       0      0 :::43494                :::*                                19794/rpc.statd     
udp6       0      0 :::869                  :::*                                19774/rpcbind

View native shared directory

[root@nfs ~]# showmount -e 192.168.4.84
Export list for 192.168.4.84:
/opt/docx 192.168.4.0/24

Client Installation nfs client program;

[root@client ~]# yum -y install nfs-utils                                                            ##安装nfs程序
[root@client ~]# showmount -e 192.168.4.84
Export list for 192.168.4.84:
/opt/docx 192.168.4.*
[root@client ~]# echo 3 >/proc/sys/vm/drop_caches                                                    ##清除缓存
[root@client ~]# mkdir -p /var/docx                                                                  ##创建挂载目录
[root@client ~]# vi /etc/fstab                                                                       ##编写fstab永久挂载
192.168.4.84:/opt/docx  /var/docx               nfs     defaults,_netdev        0 0                  ##在末行添加
#注：_netdev表示设备需要网络
[root@client ~]# mount -a                                                                            ##挂载
[root@client ~]# mount |tail -1
192.168.4.84:/opt/docx on /var/docx type nfs4 (rw,relatime,vers=4.1,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.4.83,local_lock=none,addr=192.168.4.84,_netdev)                 ##查看是否挂载

Verify whether the server storage directory successfully stored documents;

The client creates files

[root@client ~]# cd /var/docx/
[root@client docx]# touch aaa.txt
[root@client docx]# touch aaa.file
[root@client docx]# touch aaa.docx
[root@client docx]# touch aaa.pdf

View shared directory server

[root@nfs ~]# ls /opt/docx/
aaa.docx  aaa.file  aaa.pdf  aaaa.txt

NFS file sharing to build success