mount.nfs：在 Ubuntu 机器中安装时服务器拒绝访问？

Question

我有三台机器-

machineA    10.108.24.132
machineB    10.108.24.133
machineC    10.108.24.134

所有这些机器都安装了 Ubuntu 12.04，我对所有这三台机器都有 root 访问权限。

现在我应该在上面的机器上做下面的事情 -

Create mount point /opt/exhibitor/conf
Mount the directory in all servers.
 sudo mount <NFS-SERVER>:/opt/exhibitor/conf /opt/exhibitor/conf/

/opt/exhibitor/conf如上所述，我已经在所有这三台机器中创建了目录。

现在我试图在所有这三台机器上创建一个挂载点。所以我遵循了以下过程 -

安装 NFS 支持文件和 NFS 内核服务器

$ sudo apt-get install nfs-common nfs-kernel-server

创建共享目录

$ mkdir /opt/exhibitor/conf/

编辑 /etc/exports 并添加如下条目：

# /etc/exports: the access control list for filesystems which may be exported
#               to NFS clients.  See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes       hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
# /srv/nfs4        gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
# /srv/nfs4/homes  gss/krb5i(rw,sync,no_subtree_check)
#
/opt/exhibitor/conf/     10.108.24.*(rw)

运行 exportfs

root@machineA:/# exportfs -rv
exportfs: /etc/exports [1]: Neither 'subtree_check' or 'no_subtree_check' specified for export "10.108.24.*:/opt/exhibitor/conf/".
  Assuming default behaviour ('no_subtree_check').
  NOTE: this default has changed since nfs-utils version 1.0.x

exporting 10.108.24.*:/opt/exhibitor/conf

现在我做showmount了machineA

root@machineA:/# showmount -e 10.108.24.132
Export list for 10.108.24.132:
/opt/exhibitor/conf 10.108.24.*

现在当我这样做时，我收到了一个错误 -

root@machineA:/# sudo mount -t nfs 10.108.24.132:/opt/exhibitor/conf /opt/exhibitor/conf/
mount.nfs: access denied by server while mounting 10.108.24.132:/opt/exhibitor/conf

知道我在这里做错了什么吗？

Answer 1

将您的 /etc/exports 从

/opt/exhibitor/conf/     10.108.24.*(rw)

到

/opt/exhibitor/conf/     10.108.24.0/24(rw)