S3Clients

Many popular S3 desktop clients can be used to access the UMIACS Object Store. These tools complement the UMobj command line utilities and the built-in web interface by providing integration with the native file explorer on your desktop machine.

Note: Many of these clients have features that are not supported by our Object Store in UMIACS. One prominent example of this is permissions. We suggest you instead manage permissions from the built-in web application for the Object Store.

Graphical Clients

Cyberduck

• http://cyberduck.ch/

This is a free Windows and Mac S3 browser (it is however nagware that asks for a donation). It supports our S3 Object Stores using the "S3 (Amazon Simple Storage Service)" drop down menu choice in the add bookmark dialog. The following fields are required.

• Server - This should be your object store (obj.umiacs.umd.edu)
• Access Key ID - This is your access key as provided to you in the object store
• Password - This is your secret key as provided to you in the object store

You will be prompted for your secret key when you connect and may choose to save the password.

Transmit

• http://panic.com/transmit/

This is a paid file transfer application for Mac. It supports our S3 Object Stores using the "S3" menu choice after clicking the plus sign to add a favorite. The following fields are required:

• Server - This should be your object store (obj.umiacs.umd.edu)
• Access Key ID - This is your access key as provided to you in the object store
• Secret - This is your secret key as provided to you in the object store

These settings can be saved as a favorite for easy access. Transmit also allows you to mount your Obj buckets as local disks, which will support easy drag-and-drop of files.

Command Line Clients

s3cmd

Command line client for accessing S3-like services.

• http://s3tools.org/s3cmd

You need to configure a file like ~/.s3cmd that looks like the following with your ACCESS_KEY and SECRET_KEY substituted.

[default]
access_key = ACCESS_KEY
host_base = obj.umiacs.umd.edu
host_bucket = %(bucket)s.obj.umiacs.umd.edu
secret_key = SECRET_KEY
use_https = True

mc

The Minio Client is a comprehensive single binary (Go) command line client for cloud based storage services.

• https://min.io/download

Users in UMIACS can run this client on supported systems through adding a software modules for mc.

module add mc

You will need to setup a cloud provider for Obj and you should first retrieve the ACCESS_KEY and SECRET_KEY for your personal or LabAccount in the Object Store .

mc config host add obj http://obj.umiacs.umd.edu ACCESS_KEY SECRET_KEY

You can then use the normal mc commands like the following to list the contents of a bucket.

$ mc ls obj/iso
[2017-02-10 16:45:04 EST] 3.5GiB rhel-server-7.3-x86_64-dvd.iso
[2017-02-13 12:21:33 EST] 4.0GiB rhel-workstation-7.3-x86_64-dvd.iso

There is also the ability to search for file globs of specific files using the find sub-command for mc.

$ mc find derek/derek_support --name "*.log"
derek/derek_support/mds_20170918/ceph-mds.objmds01.log
derek/derek_support/satellite.log
derek/derek_support/umiacs-49168.log