MapR provides volumes as a way to organize data and manage cluster performance. For example, you might want to create a volume for each user, department, or project. You can then create a volume-level ACL that controls which users and groups have access to that volume, and what actions they may perform.
There are two ways to do this: from the MapR Control System (MCS) or from the command line.
From the MCS
- For a new volume, click on the New Volume tab, as shown.
In the dialog box that opens, add a user or group as the Accountable Entity under Volume Setup.
In the Permissions pane, select permission levels from the pull-down menu next to each entry.
- For an existing volume, click on Volumes in the navigation pane and select the checkbox next to the volume.
Next, click on the Modify Volume tab.
Select Properties from the dropdown menu.
Open the Permissions pane and click on Add Permission +. Add users or groups, then select permission levels.
From the Command Line
To create an ACL at the command line, use the
acl set command to specify a list of authorized users (or groups) and the actions they are allowed to perform.
The syntax is:
Include spaces between multiple entries, such as a list of usernames and their associated permission levels (or actions).
Each allowed action has a permission code associated with it. The codes are explained below.
Dump or back up the volume
Restore or mirror the volume
Modify the volume's properties
Delete the volume
|a||Administrator (can edit and view ACLs, but cannot perform volume operations)|
Full control over the volume (this enables all volume-related administrative options with the exception of changing the volume ACLs)
Example Volume-level ACL
This example shows how to create an ACL for a volume named
test-volume that allows full control over volume ACLs for user
rjones. In addition, all users in the
developers group are given permission to dump, restore, and modify volume properties.
Volumes Modify Volume checkbox.PNG (image/png)
Modify Volume tab.PNG (image/png)
Modify Volume dropdown.PNG (image/png)
New Volume dialog.PNG (image/png)