mc cors get

The mc cors get command retrieves and displays the Cross-Origin Resource Sharing (CORS) configuration for a bucket in XML format.

CORS is a browser security mechanism that controls which web domains can access your object storage from client-side JavaScript. When a web application running on one domain attempts to access objects in AIStor from a different domain, the browser checks CORS policies to determine if the request should be allowed. See the Mozilla CORS documentation for more information.

Syntax

Example Syntax

The command has the following syntax:

mc [GLOBALFLAGS] cors get ALIAS/BUCKET

Brackets [] indicate optional parameters.
Parameters sharing a line are mutually dependent.
Parameters separated using the pipe | operator are mutually exclusive.

Copy the example to a text editor and modify as-needed before running the command in the terminal/shell.

Parameters

ALIAS

Required

The alias of the AIStor or other S3-compatible service.

BUCKET

Required

The name of the bucket from which to retrieve the CORS configuration.

Global flags

This command supports any of the global flags.

Examples

Get CORS configuration for a bucket

Use mc cors get to retrieve the CORS configuration:

mc cors get myaistor/mybucket

Replace myaistor with the alias of a configured S3-compatible host.
Replace mybucket with the name of the bucket.

If no CORS configuration exists, the command returns:

No bucket CORS configuration found.

Save CORS configuration to a file

Redirect the output to save the CORS configuration:

mc cors get myaistor/mybucket > cors-backup.xml

Behavior

S3 compatibility

The mc commandline tool is built for compatibility with the AWS S3 API and is tested with AIStor and AWS S3 for expected functionality and behavior.

MinIO provides no guarantees for other S3-compatible services, as their S3 API implementation is unknown and therefore unsupported.

While mc commands may work as documented, any such usage is at your own risk.

No configuration found

If the bucket has no CORS configuration, the command displays a message indicating no configuration exists. In this case, the bucket uses global CORS settings.