Questions tagged [nfs4]

Network File System version 4 (NFSv4)

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1answer
147 views

NFS/krb5 authentication server lookup fails due to wrong principal name

When mounting an NFSv4 with Kerberos, authentication fails and krb5kdc.log shows the wrong principal name for the NFS server. LOOKING_UP_SERVER: ... host/nfsclient.in[email protected] ...
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0answers
15 views

Why does ssh login as an AD user with private key in nfs4 /home succeed on the second attempt?

I configured my up-to-date Debian (v10.5) Server with samba, winbind, sssd, krb5 and nfs-common to authenticate against an AD in my domain and mount its /home via nfs4. On the client side (windows ...
1
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0answers
150 views

NFS4 and bind mount issues

Ok guys I have a weird issue. After recently adding a bind mount 2 folders deep inside an existing NFS4 export, when I mount that NFS export on my client, it leads directly to the bind mount. No ...
2
votes
1answer
298 views

Client cannot mount: “mount.nfs4: Protocol not supported”

I am running nfs4 only on both server and client. I am not sure what I changed recently, but I can no longer mount an exported file system which I used to be able to mount. I have just upgraded the ...
0
votes
1answer
25 views

How to allow rw NFS share in a heterogeneous environment (GNU/Linux, Windows)

I have a NFS server on Ubuntu 20.04. My /etc/exports looks like /home/user2 10.4.200.2(rw,sync) /home/user3 10.4.200.3(rw,sync) On a Windows 10, I mount the folder using "Connect a network ...
2
votes
1answer
32 views

nfs - per-host write protection?

I have a debian NFS server on an internal network, that I want to protect from modification by malicious agents. I want something stronger than per-IP or per-mac firewall rules. The clients are all ...
0
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0answers
17 views

Permission denied for read from LFS, but it succeeds after ls command

I have observed a strange behavior where read of a file fails, but the same command succeeds after performing an ls in the parent directory of the file I wanted to read. E.g. See below (file names are ...
2
votes
0answers
54 views

NFS4 web directory throughput drops every 60 seconds - Apache / PHP-FPM / centos

We recently switched to an NFS4 share for our web directory (/var/www/sites). Ever since the switch at exactly 60 seconds, I'm seeing a drop off in throughput from the NFS mounted drive on the client-...
0
votes
1answer
288 views

Docker volume on NFS share - empty directory

We have a Docker Swarm deployment running on two nodes (node1 and node2) for our business application. The application needs a volume to store persistent data. As it is unclear where a container is ...
1
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0answers
149 views

Permission denied for user having a secondary group in an NFS shared folder

I have a NFS shared folder (storage) that can be accessed by other machines on my network. The right user can read and write files and folder in that storage, but I've created another user and ...
0
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0answers
39 views

how to debug / resolve issue nfs mount is timing out on client

All, I have two VMs running Ubuntu 18.04.4 LTS. One has been set up to be an nfs server. The other I hope to be a client which I can mount a share from said server. I have followed instructions ...
1
vote
1answer
66 views

Where would I find background documentation on nfsidmap?

I'm trying to set up an NFSv4 client, and can't find useful documentation. The manpage for nfsidmap(5) (I'm concerned with CentOS on the client-side, as it happens) describes a particular tool, which ...
1
vote
1answer
982 views

NFS server daemon fails to start at boot

I´m trying to export an external disk, so, I configured my nfs-server service to wait for disk1 to mount, however it fails. This is the situation after boot: $ systemctl status nfs-server.service ● ...
0
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0answers
35 views

Working with raw uids and gids and no_root_squash with NFS4

Due to a very unfortunate situation that I have no control over, I am currently forced to setup ownerships, groups and ACL on an NFS server from a machine that has nothing to do with the users on the ...
1
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0answers
80 views

DR for Docker persistent storage on NFS

At the moment we have a Docker Swarm setup with DTR, UCP etc using a local NFS server for DTR and persistent storage. We would like to have a DR setup at a remote data center which has high speed ...

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