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From another SO question, I understand I should create an entry in fstab to permanently mount an access to a virtual machine.

I am not Linux expert. The magic command which allows me to perform this from a terminal is:

sudo sshfs -o idmap=user -o allow_other -o nonempty jverstrynge@devjverstrynge:/home/httpd /home/jverstrynge/httpd

When I check the above SO question, I see an entry looking like this:

/media/mybook/laptop_backup /export/laptop_backup none bind 0 0

Can someone explain how to transform the CLI command into an entry in fstab?

Community
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Jérôme Verstrynge
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3 Answers3

45

You can use this syntax:

sshfs#USER@HOST:REMOTE_PATH LOCAL_PATH fuse defaults,_netdev,allow_other 0 0

E.g.

sshfs#jverstrynge@devjverstrynge:/home/httpd /home/jverstrynge/httpd fuse defaults,_netdev,allow_other 0 0

But this works only if you use ssh keys for authentication.

TouroLouco
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LilloX
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    If you intend to use the allow_other mount option like the answer above suggests, be aware that the Linux kernel has an unresolved security bug that affects FUSE. See https://github.com/libfuse/libfuse/issues/15 – MountainX Feb 11 '18 at 08:51
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    Similar to the answer below regarding autofs, the options field of fstab (defaults,allow_other above) may include any option in ssh_config like: IdentityFile=some_file, etc. Perhaps choosing only aes256 cypher since 128 is default or setting up a PKI provider for smartcards (btw for US federal users you can set up standard Id smartcards, just don't forget revocation.) Finally two notes (untested) considere /etc/ssh/sshd_config and the "delay_connect" option to speed up boot. – uDude Apr 14 '20 at 17:54
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    This works with root's ssh configuration. Is there a way to make it use my user's? I'd like it to use my host configuration without having to copy it over. – Paul Jul 06 '20 at 13:54
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    @Paul You can specify a custom SSH command. Building on the posted example:

    sshfs#jverstrynge@devjverstrynge:/home/httpd /home/jverstrynge/httpd fuse defaults,_netdev,allow_other,ssh_command=ssh\040-F\040/home/jverstrynge/.ssh/config 0 0

    I had to format it like this to get it to recognize the hostname from the config file:

    jverstrynge@devjverstrynge:/home/httpd /home/jverstrynge/httpd fuse.sshfs defaults,_netdev,allow_other,ssh_command=ssh\040-F\040/home/jverstrynge/.ssh/config 0 0

    Note that the \040 in both examples is an octal escape sequence for the space character.

     – Syd Lambert Jan 19 '23 at 16:49
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    The sshfs#USER@HOST syntax was deprecated in latest FUSE implementations. Now it's : user@a.b.c.d:/ /mnt/XSI/srvs/e.f.g.h fuse.sshfs + options – Daniel J. May 05 '23 at 15:15
12

From this source

this works for non systemd,see article for other config (Fedora, Arch, openSuse,...)

USERNAME@HOSTNAME_OR_IP:/REMOTE/DIRECTORY  /LOCAL/MOUNTPOINT  fuse.sshfs _netdev,user,idmap=user,transform_symlinks,identityfile=/home/USERNAME/.ssh/id_rsa,allow_other,default_permissions,uid=USER_ID_N,gid=USER_GID_N 0 0

a systemd distro (Arch, Fedora, OpenSUSE,...), the suitable instruction is:

USERNAME@HOSTNAME_OR_IP:/REMOTE/DIRECTORY  /LOCAL/MOUNTPOINT  fuse.sshfs x-systemd.automount,_netdev,user,idmap=user,transform_symlinks,identityfile=/home/USERNAME/.ssh/id_rsa,allow_other,default_permissions,uid=USER_ID_N,gid=USER_GID_N 0 0
altagir
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7

Try autofs

create auto.master:

/mount /etc/auto.sshfs        uid=1000,gid=1000,--timeout=30,--ghost

create auto.sshfs - moviefolder:

fstype=fuse,rw,allow_other,noatime,port=54321,IdentityFile=/root/.ssh/id_rsa :sshfs\#root@10.70.70.12\:/var/www/html/moviefolder

You need to have ssh keys for this to work.

philshem
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Priyank
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