Data Transfer Tools: rclone

This article provides information about the rclone data transfer tool. In particular:

  • what is rclone?
  • installing rclone for yourself on JASMIN.
  • configuring rclone
  • Dos and Don'ts 

What is rclone?

rclone is a command-line utility which enables access to lots of different storage systems including object stores and cloud-based storage. It can also move data between directories act as an SFTP client so could be used to access files on JASMIN.

It is very well documented already, so rather than repeat that information here, this article highlights aspects relevant to its use on JASMIN.

Further information will follow in due course as our experience with this tool develops.

Installing rclone for yourself on JASMIN

First off, do not attempt to follow the documented instructions for installing on Linux. As a regular user, you do not have root/administrator permission and are not permitted to run scripts using sudo. Normally most utilities are already installed for you on JASMIN, but in this case you need to adapt the documented instructions so that you can safely install this in your OWN home directory. [That may change in the future if this tool proves useful].

The recommended procedure for installation on JASMIN is as follows:

Fetch and unpack the Linux binary distribution: (in your home directory on an xfer server)

curl -O
cd rclone-*-linux-amd64

Next, move the rclone executable to your own bin directory. You may need to create that directory if it does not exist already, and add it to your PATH environment variable in your ~/.bash_profile file

# only need these if these aren't in place already in your own setup:
mkdir ~/bin
export PATH="~/bin:$PATH" # this works "for now" on the command line, but add to your ~/.bash_profile to make the change permanent.

# move the rclone executable
mv rclone ~/bin/

# make the permissions on the file executable by you
chmod 700 ~/bin/rclone

Note that you will not have installed the man pages, so these will not be available: please consult the online documentation instead.

configuring rclone

Configuring rclone is covered in the rclone documentation. Essentially you need to configure a "remote" representing each storage system you want to interact with. You can then use rclone to manage data between those "remotes".

DOs and DON'Ts

  • please DO NOT use the following features on JASMIN (at least until further notice). Some of these features look useful, but more work is needed to understand if/how they can be used safely on JASMIN without causing problems.
    • rclone mount (mounting a remote as a filesystem) - DO NOT USE
    • rclone rcd (remote control daemon) - DO NOT USE
    • rclone serve(serve remote over a protocol) - DO NOT USE
  • you should safely be able to use the following, between remotes that you have configured:
    • rclone copy
    • rclone sync
    • rclone lsd
    • rclone ls
    • ..(other basic commands)

Help on a particular command is found using

rclone <command> --help

Further examples of useful ways of using rclone on JASMIN will follow...

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