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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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NFS: permission denied even locally (lemmy.world)

submitted 7 months ago by peregus@lemmy.world to c/linux@lemmy.ml

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Hi all, I don't know if this is the right place to post this...let me know :)

I'm trying to create a NFS share, this is my /etc/exports:

/mnt/pool/var_VM_docker/ 172.31.0.0/24(rw,sync,no_subtree_check)

When I try to connect with:

sudo mount -t nfs -o nfsvers=3 -vvvv 172.31.0.1:/mnt/pool/var_VM_docker /mnt/test

I get:

mount.nfs: timeout set for Mon Apr 15 19:07:11 2024
mount.nfs: trying text-based options 'nfsvers=3,addr=172.31.0.1'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 172.31.0.1 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 172.31.0.1 prog 100005 vers 3 prot UDP port 41067
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 172.31.0.1:/mnt/pool/var_VM_docker

I don't have iptables enabled, nor SELinux. I've tried exporting it on 127.0.0.1 and connecting it to 127.0.0.1, but the problem persist. What am I doing wrong?

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[–] lemmyreader@lemmy.ml 5 points 7 months ago (1 children)

Did you have NFS working before ? For NFS version 3 and below you will need to have rpcbind running, and years ago that changed the default to listening on 127.0.0.1 on some Linux distributions. Here's a quick search result for NFS4 : https://www.suse.com/support/kb/doc/?id=000019530 And from the best Linux wiki of late : https://wiki.archlinux.org/title/NFS

[–] peregus@lemmy.world 2 points 7 months ago

No, I've never used NFS. I've solved with this export:

/mnt/pool/vm_docker/ 172.31.0.0/24(rw,fsid=1,sync,no_root_squash,no_subtree_check)

And this mount:

sudo mount -t nfs -o vers=3 172.31.0.1:/mnt/pool/vm_docker /mnt/nfs/

Made it permanent with this /etc/fstab:

172.31.0.1:/mnt/pool/vm_docker /mnt/nfs nfs vers=3,rw 0 0