NFS网络文件服务器：

 

windows上面叫文件共享。多台linux服务器，只要有一台搭建了NFS服务器并把文件共享出来，其余几台服务器就可以来访问。

root@ubuntu:/etc# service portmap status● rpcbind.service - RPC bind portmap service   Loaded: loaded (/lib/systemd/system/rpcbind.service; indirect; vendor preset: enab  Drop-In: /run/systemd/generator/rpcbind.service.d           └─50-rpcbind-$portmap.conf   Active: active (running) since 日 2018-02-25 05:50:45 PST; 1h 30min ago

root@ubuntu:/etc# service nfs-utils startroot@ubuntu:/etc# service nfs-utils status● nfs-utils.service - NFS server and client services   Loaded: loaded (/lib/systemd/system/nfs-utils.service; static; vendor preset: enab   Active: active (exited) since 日 2018-02-25 07:22:33 PST; 6min ago  Process: 6007 ExecStart=/bin/true (code=exited, status=0/SUCCESS) Main PID: 6007 (code=exited, status=0/SUCCESS)2月 25 07:22:30 ubuntu systemd[1]: Starting NFS server and client services...2月 25 07:22:33 ubuntu systemd[1]: Started NFS server and client services.2月 25 07:28:39 ubuntu systemd[1]: Started NFS server and client services.

root@ubuntu:/etc# ll | grep exports-rw-r--r--   1 root root     389 10月 10  2012 exportsroot@ubuntu:/etc# vim exports/home/nfs  *(sync,ro)

写完之后要重启nfs和portmap才能够生效。root@ubuntu:/etc# service portmap restartroot@ubuntu:/etc# service nfs-utils restart我们要共享的目录是/home/nfs，现在nfs所属的账号是root，要改成nfs，root@ubuntu:/home# mkdir nfsroot@ubuntu:/home# lldrwxr-xr-x  2 root   root    4096 2月  25 07:39 nfs/nfs账号是存在的，root@ubuntu:/home# vim /etc/passwdnfsnobody:x:125:65534::/var/lib/nfs:/bin/falseroot@ubuntu:/home# chown -R  nfsnobody:nfsnobody nfs/ （修改文件的宿主）NFS服务端需要启动2个进程，并修改配置文件，修改文件宿主。客户端：创建一个目录/mnt/sharechown -R  nfsnobody:nfsnobody  share/mount  -t  nfs  192.168.229.134:/home/nfs  /mnt/share（把另一台服务器共享的文件192.168.229.134:/home/nfs映射到本地来/mnt/share）