cephfs doesnt mount on centos 8


Well-Known Member
Sep 18, 2017
Hi ! Please help me understand what happen. I have pve 7 and ceph version 17.2.5. Created ceph fs and try to mount it on my centos 8 fresh installed server. But there is an error in cli:

mount -t ceph /mnt/cephfs -o name=user_test,secret=%ANY-SECRET%
mount: /mnt/cephfs: special device does not exist.

I tried some other commands from documentation, but nothing works.
the address ( needs to be the public addressES of your monitors. Naturally, the guest must have logical access to that subnet- its not a foregone conclusion that your guest has access.

here is an example mount command:

mount.ceph fs_user@.mycephfs2=/ /mnt/mycephfs -o mon_addr=

stolen directly from https://docs.ceph.com/en/latest/man/8/mount.ceph/, where you may find the answers to the the rest of your questions.
Last edited:
in the end, I needed to install the ceph-common package and create a file /etc/apt.conf + /etc/ceph/client.user.keyring, why the direct command does not work, I do not know

end command: mount -t ceph user_test@<fsid>.<fs_name>=/ /mnt/mycephfs



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