By B M Shukla
I strictly followed the instructions but while executing mount command got the following.
root@cgs1:~# mount -vvvv cgs2:/2d1 /mnt
mount.nfs: timeout set for Thu Aug 20 23:12:54 2020
mount.nfs: trying text-based options 'vers=4.2,addr=172.31.101.9,clientaddr=172.20.160.50'
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting cgs2:/2d1
I have checked my /etc/exports, ufw status etc but failed to solve it.
My point is please add troubleshooting in this article.
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The error you are receiving means that the NFS server doesn’t have the correct permissions to allow this client to connect.
You would need to include your config file and show what host access you have setup on the server side to ensure that you have the correct IP address and directories setup for exporting.
You can Ensure that the NFS server (cgs2 in your case) is up and running. You can check its status using:
1. Check NFS Server Status:
systemctl status nfs-server
2. Verify Exported Directory:
Confirm that the directory /2d1 on cgs2 is correctly exported. Check the /etc/exports file:
cat /etc/exports
Ensure the export options are correctly set. Reload the NFS server if changes were made:
exportfs -ra
3. Firewall Configuration:
Confirm that the firewall on the NFS server allows connections. NFS typically uses port 2049. Check the firewall status:
ufw status
If ufw is active, make sure it allows NFS traffic:
ufw allow from <client_IP> to any port nfs
4. Check NFS Version:
The mount command specifies NFS version 4.2. Ensure that the NFS server supports this version. If not, you may need to adjust the mount options or the server’s NFS configuration.
5. Verify Client’s NFS Version:
Ensure that the client machine supports the NFS version specified in the mount command. You can check the supported versions:
rpcinfo -p | grep nfs
6. Permissions and Ownership:
Confirm that the directory /mnt on the client machine has appropriate permissions. It should be writable by the user attempting the mount.
You can also check our articles on NFS mount points here:
https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nfs-mount-on-ubuntu-22-04
https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nfs-mount-on-ubuntu-22-04
Regards
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