Azure:Manage anonymous read access to containers and blobs

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Grant anonymous users permissions to containers and blobs

By default, a container and any blobs within it may be accessed only by the owner of the storage account. To give anonymous users read permissions to a container and its blobs, you can set the container permissions to allow public access. Anonymous users can read blobs within a publicly accessible container without authenticating the request.

Containers provide the following options for managing container access:

  • Full public read access: Container and blob data can be read via anonymous request. Clients can enumerate blobs within the container via anonymous request, but cannot enumerate containers within the storage account.

  • Public read access for blobs only: Blob data within this container can be read via anonymous request, but container data is not available. Clients cannot enumerate blobs within the container via anonymous request.

  • No public read access: Container and blob data can be read by the account owner only.

Features available to anonymous users

The following table shows which operations may be called by anonymous users when a container‘s ACL is set to allow public access.

REST Operation Permission with full public read access Permission with public read access for blobs only
List Containers Owner only Owner only
Create Container Owner only Owner only
Get Container Properties All Owner only
Get Container Metadata All Owner only
Set Container Metadata Owner only Owner only
Get Container ACL Owner only Owner only
Set Container ACL Owner only Owner only
Delete Container Owner only Owner only
List Blobs All Owner only
Put Blob Owner only Owner only
Get Blob All All
Get Blob Properties All All
Set Blob Properties Owner only Owner only
Get Blob Metadata All All
Set Blob Metadata Owner only Owner only
Put Block Owner only Owner only
Get Block List (committed blocks only) All All
Get Block List (uncommitted blocks only or all blocks) Owner only Owner only
Put Block List Owner only Owner only
Delete Blob Owner only Owner only
Copy Blob Owner only Owner only
Snapshot Blob Owner only Owner only
Lease Blob Owner only Owner only
Put Page Owner only Owner only
Get Page Ranges All All
Append Blob Owner only Owner only

技术分享

选项“公共容器”对应Full public read access(可匿名访问本容器中的blob,可访问本容器的元数据,可枚举本容器的blob)

选项“公共Blob”对应Public read access for blobs only(可匿名访问本容器中的blob,但是不能枚举blob,也不能访问容器元数据)

选项“私有”对应No public read access(禁止匿名访问)

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