Activate EOS and manage EOS resources

Create a bucket

1. Log on to the ENS console.

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. Click Create Bucket.

4. On the Create Bucket page, configure the following parameters and click OK.

   Parameter	Description
   Bucket Name	The name of the bucket. The name of a bucket cannot be changed after the bucket is created. The name must meet the following requirements: A bucket name must be globally unique. The name can contain lowercase letters, digits, and hyphens (-). The name cannot start or end with a hyphen (-). The name must be 3 to 50 characters in length.
   Scheduling Policy	Specify Nodes Global Scheduling Note If you select Global Scheduling, EOS selects one or more nodes for data storage based on the scheduling policy. Data is distributed and stored on the edge cloud, not on specific nodes. If you want to store data in a specific location, select Specific Nodes.
   Node (if you set Scheduling Policy to Specific Nodes)	The node to which the bucket belongs. You can select a node from the drop-down list. After you create a bucket, the node cannot be changed.
   Scheduling Scope (if you set Scheduling Policy to Global Scheduling)	Chinese Mainland Outside Chinese Mainland Note Select a scheduling scope based on your business requirements. After you create a bucket, the scheduling scope cannot be changed.
   Endpoint	EOS uses the same global endpoint: EOS.aliyuncs.com.
   Access Control List	You can configure the access control list (ACL) of a bucket based on your business requirements and modify the ACL of the bucket after you create the bucket. You can configure only one ACL for a bucket. Valid values: Private: Only the owner or authorized users of this bucket can read and write objects in the bucket. Other users cannot access the objects in the bucket without authorization. Public Read (Not Recommended): Only the owner or authorized users of this bucket can write objects in the bucket. Other users, including anonymous users, can only read objects in the bucket. Warning This may result in unexpected access to the data in the bucket and unexpectedly high fees. Exercise caution when you set the bucket ACL to Public Read. Public Read/Write (Not Recommend): All users, including anonymous users, can perform read and write operations on the objects in the bucket. Warning If you set the ACL of a bucket to Public Read/Write, all users can access the objects in the bucket and write data to the bucket over the Internet. This may result in unexpected access to the data in the bucket and unexpectedly high fees. If a user uploads prohibited data or information, your legitimate interests and rights may be infringed. We recommend that you do not set the bucket ACL to public-read-write unless necessary.
   Remarks	The value must be 1 to 128 characters in length.

Delete a bucket

If you no longer use a bucket, you can delete the bucket to prevent unnecessary charges.

1. Log on to the ENS console.

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket that you want to delete and click Delete in the Actions column.

4. In the message that appears, click OK.

   Note

   Note: Make sure that the objects in the bucket are deleted before you delete the bucket. Otherwise, the bucket cannot be deleted. A bucket cannot be restored after being deleted.

Upload an object

1. Log on to the ENS console

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket where the object is stored and click Manage in the Actions column.

4. On the Objects page, click Upload Object.

5. On the Upload Object page, configure the following parameters.

   Parameter	Description
   Upload To	Set the directory to which you want to upload the objects. Current Directory: The object is uploaded to the current directory. Note Set the value to Current Directory.
   Access Control List	Select the ACL of the objects that you want to upload. Inherited from Bucket: The ACL of the objects is the same as that of the bucket. Note Set the value to Inherited from Bucket.
   Upload Object	Select the object that you want to upload. You can click Scan Files to select a local file, or drag a file to the Upload Object section. File naming conventions: The object name must be encoded in UTF-8. The object name is case-sensitive. The object name cannot start with a slash (/) or backslash (\). The name must be 1 to 1,023 bytes in length.

6. Click Upload. You can view the upload progress on the Upload Tasks tab.

Download an object

After you upload objects to a bucket, you can download the objects to the default download path of your browser or a specific local path.

1. Log on to the ENS console

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket where the object is stored and click Manage in the Actions column.

4. On the Objects page, find the object that you want to download and click Download in the Actions column.

Delete an object

1. Log on to the ENS console

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket that you want to manage and click Manage in the Actions column.

4. On the Buckets page, find the object that you want to delete and click Delete in the Actions column.

   Note

   Note: Objects cannot be restored after being deleted. Proceed with caution.

Search for objects

If your bucket contains a large number of objects, you can search for and retrieve objects by prefix to improve search efficiency.

1. Log on to the ENS console.

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket that you want to manage and click Manage in the Actions column.

4. On the Objects page, enter a prefix in the search box to query objects.

Create a lifecycle rule

1. Log on to the ENS console.

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket and click Manage in the Actions column.

4. On the Lifecycle page, click Create Rule.

5. Configure the following parameters and click OK.

   Parameter	Description

   Parameter	Description
   Status	Specify the status of the lifecycle rule. You can select Enabled or Disabled. After you enable a lifecycle rule, objects are deleted based on the configured lifecycle rule. After you disable a lifecycle rule, lifecycle tasks of the lifecycle rule are interrupted.
   Applied To	Specify the objects on which you want the lifecycle rule to take effect. You can select Objects with Specified Prefix or Whole Bucket.
   Allow Overlapped Prefixes	Specify whether to allow prefixes that overlap. By default, OSS checks whether the prefix of each lifecycle rule overlaps with that of another lifecycle rule. For example, if the bucket has an existing lifecycle rule (Rule 1) and you want to configure another lifecycle rule (Rule 2) that contains an overlapping prefix: Rule 1: All objects whose names contain the dir1/ prefix in the bucket are deleted 180 days after the objects are last modified. Rule 2: All objects whose names contain the dir1/dir2/ prefix in the bucket are deleted 30 days after the objects are last modified. If you do not allow prefix overlapping in the lifecycle configuration, EOS detects that objects in the dir1/dir2/ directory match two deletion rules. Therefore, the two lifecycle rules do not take effect. If you allow prefix overlapping in the lifecycle configuration, the objects in the dir1/dir2/ directory are deleted after 30 days. Other objects in the dir1/ directory are deleted after 180 days.
   Prefix	Specify the prefix in the names of objects on which you want the lifecycle rule to take effect. If you set the prefix to test, all objects whose names contain the test prefix, such as testObj.png and test/testObj.jpg match the lifecycle rule. If you set the prefix to test/, all objects whose names contain the test/ prefix, such as test/example.jpg and test/test.jpg, match the lifecycle rule.
   Object Lifecycle	Configure rules for objects to specify when the objects expire. Valid values: Days Overdue and Expired At.
   Lifecycle-based Rules	Configure lifecycle rules to delete expired objects. For example, you select Modified Time, set Expired At to June 30, 2023, and specify that objects that are last modified before this date are automatically deleted. In this case, objects that are last modified before June 30, 2023 are automatically deleted. The deleted objects cannot be restored.

CORS

Browsers reject cross-origin requests based on the same-origin policy to keep website content secure. For example, if the JavaScript code on one website makes a request for a resource hosted on another website that has a different origin, the browser denies the request. Two URLs have the same origin if they have the same protocol, domain name or IP address, and port number (if specified). The following table provides examples of origin comparison with http://www.aliyun.com/org/test.html.

The preceding table shows that the browser rejects requests from a URL to another URL that has a different origin. If you want to allow cross-origin requests, you must configure CORS rules.

Modify the ACL of a bucket

1. Log on to the ENS console.

2. In the left-side navigation pane, choose Storage and Snapshots > EOS.

3. On the Buckets page, find the bucket that you want to manage and click Access Control List in the Actions column.

4. On the Configure Access Control List page, change the ACL of the bucket based on your requirements.

5. Click OK.