centos 关闭fiewalld,selinux
yum install yum install nfs-utils portmap
vim /etc/exports
文件写入时使用anonuid用户写入owner,anongid组写入文件，用户或组id在/etc/passwd里面找
添加内容：/home *(insecure,rw,async,no_root_squash,anonuid=65534,anongid=65534)
:wq
service.rpcbind start
service nfs start
Mac
sudo mount -t nfs -o resvport,rw,async,wsize=32768,rsize=32768 centos:/home ~/rhome
Done!