Shared Filesystems¶

All things related to afs, eos etc.

Setup AFS on WSL2¶

Follow this gist to set-up AFS with Kerberos on your WSL.

Mounting EOS and CERNBox via FUSE on an unmanged CentOS machine¶

The CERN Service Portal has a guide for that.

Mounting TN Resources on GPN and Other Machines¶

To be able to run the GUI or CBNG seamlessly from computers which are not in the technical network, it might be useful to mount /user, /nfs and /eos via sshfs using the following recipe:

Create mountpoints and symbolic links (only once)¶

mkdir -p ~/mnt/user && ln -nfs ~/mnt/user /user
mkdir ~/mnt/nfs && ln -nfs ~/mnt/nfs /nfs
mkdir ~/mnt/eos && ln -nfs ~/mnt/eos /eos

Mount network resources (repeat after timeouts and restarts)¶

sshfs -o follow_symlinks username@cs-ccr-dev3.cern.ch:/user/ ~/mnt/user
sshfs -o follow_symlinks username@cs-ccr-dev3.cern.ch:/nfs/ ~/mnt/nfs
sshfs -o follow_symlinks username@lxplus.cern.ch:/eos/ ~/mnt/eos

Follow Symlinks

When mounting to a different location than /nfs or /user locally, one has to set the follow_symlinks option so that symlinks e.g. pointing to a folder somewhere in /nfs/ (which locally does not exist) are followed correctly, i.e. to the path on the remote machine. This is not needed when mounting to /nfs or /user as the symlinks would point to these locations anyway, but that comes with its own problems, as the mount needs to be done as root in these cases and might not be valid for other users.

If outside of the GPN, jump through `lxplus` to mount `dev3`-folders¶

sshfs username@cs-ccr-dev3.cern.ch:/user/ ~/mnt/user -o ssh_command='ssh -t username@lxplus.cern.ch ssh'
sshfs username@cs-ccr-dev3.cern.ch:/nfs/ ~/mnt/nfs -o ssh_command='ssh -t username@lxplus.cern.ch ssh'

Info

To avoid getting asked for your password all the time, you should have your ssh properly configured with Kerberos.

In case you need to unmount these

sudo fusermount -u ~/mnt/user
sudo fusermount -u ~/mnt/nfs
sudo fusermount -u ~/mnt/eos