mount NAS存储失败

mount时出现以下告警:
mount xx.xx.xx.xx:dat /dat
mount: wrong fs type, bad option, bad superblock on xx.xx.xx.xx:/dat,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount. helper program)
In some cases useful info is found in syslog - try

原因:
redhat7.4操作系统采用默认最小安装,mount NFS出现错误.

解决方案:
安装nfs-utils包,yum install nfs-utils

附:
yum源光盘配置(光盘mount至/mnt)
/etc/yum.repos.d/rhel7.repo
[ ]
name=rhel7
url=file:///mnt
gpgcheck=0