Globus: Difference between revisions

You can start typing a collection name to select it. For example, if you want to transfer data to or from the Béluga cluster, type "beluga", wait two seconds for a list of matching sites to appear, and select <code>computecanada#beluga-dtn</code>.  

All Compute Canada resources have names prefixed with <code>computecanada#</code>. For example, [https://globus.computecanada.ca/file-manager?origin_id=278b9bfe-24da-11e9-9fa2-0a06afd4a22e <code>computecanada#beluga-dtn</code>], [https://globus.computecanada.ca/file-manager?origin_id=c99fd40c-5545-11e7-beb6-22000b9a448b <code>computecanada#cedar-dtn</code>],  [https://globus.computecanada.ca/file-manager?origin_id=499930f1-5c43-11e7-bf29-22000b9a448b <code>computecanada#graham-dtn</code>] or [https://globus.computecanada.ca/file-manager?origin_id=77506016-4a51-11e8-8f88-0a6d4e044368 <code>computecanada#niagara</code>] (note that 'dtn' stands for 'data transfer node').

You may be prompted to "authenticate" the collection, depending on which site is hosting the collection. For example, if you are activating a collection hosted on Graham, you will be asked for your Compute Canada username and password.  The authentication of a collection remains valid for some time - typically one week for CC collections while personal collections do not expire.

To share a file or folder on an endpoint first requires that the system hosting the files has sharing enabled.

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To create a Globus Share on project for Beluga or Cedar the PI of the project will need to contact [mailto:globus@computecanada.ca globus@computecanada.ca] saying that they want Globus sharing enabled and the path to enable. Otherwise you will receive the error:

"The backend responded with an error: You do not have permission to create a shared endpoint on the selected path. The administrator of this endpoint has disabled creation of shared endpoints on the selected path."

Globus sharing is enabled for the home directory. By default we disable sharing on project to prevent users accidentally sharing other user's files. If you would like to test a Globus share you can create one in your home directory.

We suggest using a path that makes it clear to everyone that files in the directory might be shared such as:

/project/my-project-id/Sharing

Once we have enabled sharing on the path you will be able to create a new Globus shared endpoint for any sub directory under that path. So for example you will be able to create the sub directories:

/project/my-project-id/Sharing/Subdir-01

and

/project/my-project-id/Sharing/Subdir-02

Create a different Globus Share for each and share them with different users.

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Log into [https://globus.computecanada.ca globus.computecanada.ca] with your Globus credentials. Once you are logged in, you will see a transfer window. In the ‘endpoint’ field, type the endpoint identifier for the endpoint you wish to share from (e.g. computecanada#beluga-dtn, computecanada#cedar-dtn, computecanada#graham-dtn, computecanada#niagara etc.) and activate the endpoint, if asked to.  

Select a folder that you wish to share, then click the "Share" button to the right of the folder list.

[[File:Globus SharedEndpoint1-1024x607.png|thumb|Open "Share" option (Click for larger image.)]]

Click on the "Add a Guest Collection" button in the top right corner of the screen.  

[[File:Globus SharedEndpoint2.png|thumbnail|Click on "Add a Guest Collection" (Click for larger image.)]]

Give the new share a name that is easy for you and the people you intend to share it with to find. You can also adjust from where you want to share using the "Browse" button.

[[File:Globus SharedEndpoint3-1024x430.png|thumbnail|Managing a Shared Endpoint]]

To add or remove write permissions from a user, click the checkbox next to their name under the write column. It is not possible to remove read access.

[[File:Globus-Add-Permissions.png|thumb|Send an invitation to a share]]

[[File:Globus RemovingSharedEndpoint-1024x322.png|thumbnail|Removing a Shared Endpoint]]

The endpoint is now deleted. Your files will not be affected by this action, nor will those others may have uploaded.