Apache not authorized to read NFS mount

Question

A folder is mounted on a web server (Apache) with NFS but this server can't see the folder. I can see the folder but Apache cannot:

Starting httpd: Warning: DocumentRoot [/mount folder/.../] does not exist
Warning: DocumentRoot [/mount folder/.../] does not exist

NFS config /etc/export

/folder          192.168.x.x(rw,subtree_check,all_squash)

On client /etc/fstab

192.168.x.x:folder/ /folder nfs rw  0   0

Answer 1

Easier way then taking away SELinux protection is simply to allow use of NFS to it:

setsebool httpd_use_nfs on

Answer 2

I found solution !

In the web server, edit /etc/sysconfig/selinux and disable this.

SELINUX=disabled