desculpe se este tópico duplicar alguns outros tópicos, mas não consigo encontrar resposta neles.
o que eu tenho:
o servidor é U buntu 14.04.5 LTS
o cliente é o Ubuntu 14.04.2 LTS - que é o 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)
Se eu executar este comando no servidor:
mount 192.168.88.185:/nfs/keycdn /mnt
Ele é montado e funciona - eu posso criar um arquivo
Se eu correr no lado do cliente, recebo um erro:
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
Eu tenho esses direitos em uma pasta: servidor
#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/
Para fazer efeito depois de modificar o / etc / exports eu executei exportfs -rav e service nfs-kernel-server restart
Eu tentei definir vers de nfs em / etc / fstab no lado do cliente. mas sem efeito
Existem verbos no comando de montagem em execução no servidor e no cliente:
Servidor
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
Cliente 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
Esta resposta só ajuda se você usa LXC proxmox, mas eu acho que você deve tentar o seu no outro caso também
O problema estava no lado do proxmox. Proxmox tem apparmor e essa coisa está bloqueando tudo.
Para parar o apparmor e fazê-lo não funcionar, faça isso
# /etc/init.d/apparmor stop
# /etc/init.d/apparmor teardown
# update-rc.d apparmor disable
depois disso tudo começa a funcionar como um charme