NFS服务器实现文件共享

• NFS服务器运行原理
• 实战配置NFS服务器
• 配置Samba服务器及实现文件共享

（一）NFS器服务端描述

1. NFS服务器： Network File System，网络文件系统使FreeBSD支持的一种
2. 系统安装，直接用yum方式安装  # yum -y install NFS*
3. 启动服务 #/etc/init.d/nfs start    
    启动显示失败：annot register service: RPC: Unable to receive; errno = Connection refused
   rpc.rquotad ，需要启动rpc服务

4. # /etc/init.d/nfs start
   
   Starting NFS services:                                     [  OK  ]
   Starting NFS quotas: Cannot register service: RPC: Unable to receive; errno = Connection refused
   rpc.rquotad: unable to register (RQUOTAPROG, RQUOTAVERS, udp).
                                                              [FAILED]
   Starting NFS mountd:                                       [FAILED]
   Starting NFS daemon: rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused)
   rpc.nfsd: unable to set any sockets for nfsd
                                                              [FAILED]　　
   # /etc/init.d/rpcbind start
   Starting rpcbind:                                          [  OK  ]
   

4. 查看NFS服务启动端口  # netstat -antup | grep 2049

# chkconfig nfs on
# chkconfig --list nfs
nfs                :off    :off    :on    :on    :on    :on    :off

5. 设置开机自启动

6. 查看共享目录

# showmount -e 192.168.0.35
Export list for 192.168.0.35:

7.  设置共享目录

编辑 #vim /etc/exports

/mysh * {rwx}     ### 允许访问的网段   用户 权限  ，*表示所有用户

### 多网段分开写

8.  重启NFS服务，查看NFS共享，并进行挂载

# showmount -e 192.168.0.35
Export list for 192.168.0.35:
/mysh *# mount -t nfs 192.168.0.35:/mysh/ /opt/# df -h
Filesystem           Size  Used Avail Use% Mounted on
/dev/sda3             19G  .1G   13G  % /
tmpfs                427M   72K  427M   % /dev/shm
/dev/sda1             97M   34M   59M  % /boot
192.168.0.35:/mysh/  .5G  .1G  .0G  % /opt

9.  开机自动挂载 编辑 /etc/fstab 文件，添加即可

10.权限问题   1）服务本身权限

2）目录权限    # chmod 777 -R /mysh/

# grep nfs /etc/passwd
rpcuser:x:::RPC Service User:/var/lib/nfs:/sbin/nologin
nfsnobody:x:::Anonymous NFS User:/var/lib/nfs:/sbin/nologin