我从解决方案中做了所有步骤，但对我来说没有任何意义。仍然不起作用。
我有什么：
服务器是U buntu 14.04.5 LTS
客户端 Ubuntu 14.04.2 LTS - 即proxmox LXC
#cat /etc/exports
/nfs 192.168.88.0/24(ro,fsid=0,insecure,no_root_squash,no_subtree_check,sync)
/nfs/keycdn 192.168.88.0/24(rw,nohide,insecure,no_root_squash,no_subtree_check,sync)
如果我从服务器运行此命令：
mount 192.168.88.185:/nfs/keycdn /mnt
已安装，正常工作 - 我可以创建文件
如果我在客户端运行，我会收到错误：
root@kafka-02:/# mount 192.168.88.185:/nfs/keycdn /mnt
mount.nfs: access denied by server while mounting 192.168.88.185:/nfs/keycdn
我对文件夹有这样的权利： 服务器
#ll /nfs/
drwxrwxrwx 3 nobody nogroup 4096 Mar 27 13:49 ./
drwxr-xr-x 24 root root 4096 Mar 27 12:41 ../
drwxrwxrwx 2 nobody nogroup 4096 Mar 27 15:17 keycdn/
要在修改/ etc / exports后生效，我运行了exportfs -rav和service nfs-kernel-server restart
我尝试在客户端/ etc / fstab中定义nfs的vers。但没效果
在服务器和客户端上运行mount命令有详细信息：
服务器
mount -vvvvvv 192.168.88.185:/nfs/keycdn /mnt
mount: fstab path: "/etc/fstab"
mount: mtab path: "/etc/mtab"
mount: lock path: "/etc/mtab~"
mount: temp path: "/etc/mtab.tmp"
mount: UID: 0
mount: eUID: 0
mount: no type was given - I'll assume nfs because of the colon
mount: spec: "192.168.88.185:/nfs/keycdn"
mount: node: "/mnt"
mount: types: "nfs"
mount: opts: "(null)"
mount: external mount: argv[0] = "/sbin/mount.nfs"
mount: external mount: argv[1] = "192.168.88.185:/nfs/keycdn"
mount: external mount: argv[2] = "/mnt"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw"
mount.nfs: timeout set for Mon Mar 27 15:51:33 2017
mount.nfs: trying text-based options 'vers=4,addr=192.168.88.185,clientaddr=192.168.88.185'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.88.185'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.88.185 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.88.185 prog 100005 vers 3 prot UDP port 34598
客户 vers = 3
mount -o 'vers=3' -vvvvvvv 192.168.88.185:/nfs/keycdn /mnt
mount: fstab path: "/etc/fstab"
mount: mtab path: "/etc/mtab"
mount: lock path: "/etc/mtab~"
mount: temp path: "/etc/mtab.tmp"
mount: UID: 0
mount: eUID: 0
mount: no type was given - I'll assume nfs because of the colon
mount: spec: "192.168.88.185:/nfs/keycdn"
mount: node: "/mnt"
mount: types: "nfs"
mount: opts: "vers=3"
mount: external mount: argv[0] = "/sbin/mount.nfs"
mount: external mount: argv[1] = "192.168.88.185:/nfs/keycdn"
mount: external mount: argv[2] = "/mnt"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw,vers=3"
mount.nfs: timeout set for Mon Mar 27 15:52:32 2017
mount.nfs: trying text-based options 'vers=3,addr=192.168.88.185'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.88.185 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.88.185 prog 100005 vers 3 prot UDP port 34598
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 192.168.88.185:/nfs/keycdn
VERS = 4
mount -o 'vers=4' -vvvvvvv 192.168.88.185:/nfs/keycdn /mnt
mount: fstab path: "/etc/fstab"
mount: mtab path: "/etc/mtab"
mount: lock path: "/etc/mtab~"
mount: temp path: "/etc/mtab.tmp"
mount: UID: 0
mount: eUID: 0
mount: no type was given - I'll assume nfs because of the colon
mount: spec: "192.168.88.185:/nfs/keycdn"
mount: node: "/mnt"
mount: types: "nfs"
mount: opts: "vers=4"
mount: external mount: argv[0] = "/sbin/mount.nfs"
mount: external mount: argv[1] = "192.168.88.185:/nfs/keycdn"
mount: external mount: argv[2] = "/mnt"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw,vers=4"
mount.nfs: timeout set for Mon Mar 27 15:56:55 2017
mount.nfs: trying text-based options 'vers=4,addr=192.168.88.185,clientaddr=192.168.88.252'
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 192.168.88.185:/nfs/keycdn
答案 0 :(得分：1)
这个答案只有在您使用LXC proxmox时才有帮助，但我认为您也应该尝试使用其他情况。
问题出在proxmox方面。 Proxmox有apparmor，那东西阻止了一切。
要停止apparmor并让他无法正常工作，请执行以下步骤
# /etc/init.d/apparmor stop
# /etc/init.d/apparmor teardown
# update-rc.d apparmor disable
在这个步骤之后，一切都像魅力一样开始工作
答案 1 :(得分：0)
如果您不想禁用apparmor，可以使用更优雅的方法
打开此文件/etc/apparmor.d/lxc/lxc-default-cgns并添加此行
mount options=(rw, nosuid, noexec, remount, relatime, ro, bind),
然后，我们应该重新阅读apparmor配置文件-运行命令
apparmor_parser -R /etc/apparmor.d/
此答案来自https://forum.proxmox.com/threads/lxc-apparmor-denied-operation-mount-error-13.36173/
答案 2 :(得分：0)
我在共享硬盘文件夹时遇到了这个问题。当我首先在本地安装硬盘驱动器文件夹并共享安装的文件夹时，它起作用了。我已经详细回答了here。