Hologres:Grant permissions to a RAM user

Grant permissions on Hologres to a RAM user

1. Log on to the RAM console with an Alibaba Cloud account or a RAM user who has administrative rights.

2. In the left-side navigation pane, choose Identities > Users.

3. On the Users page, find the required RAM user and click Add Permissions in the Actions column.

4. Grant permissions to the RAM user.

   In the Add Permissions panel, configure the parameters that are described in the following table.

   Note

   • You cannot log on to and use HoloWeb by using a specified resource group.

   • The permissions mentioned in the following section only indicate whether the RAM user has the permissions to log on to and use HoloWeb. If you want to use a RAM user to connect to and use a Hologres instance, you can go to the instance details page for authorization. For more information, see Grant the development permissions on a Hologres instance to RAM users.

   

   Parameter	Description
   Authorized Scope	Valid values: Alibaba Cloud Account: The permissions granted to the RAM user take effect within the current Alibaba Cloud account. Specific Resource Group: The permissions granted to the RAM role take effect on resource in a specific resource group. Note If you select Specific Resource Group for Authorized Scope, you must make sure that the required cloud service supports resource groups. For more information, see Services that work with Resource Group.
   Principal	The RAM user to which you want to grant permissions.
   Select Policy	Valid values: System Policy Custom Policy Note You can create custom policies based on your business requirements. You can attach a maximum of five policies at a time. To attach more policies, perform the operation multiple times.

   You can select System Policy or Custom Policy based on the following descriptions:

   • System Policy

     The following table describes the system policies that you can use to grant permissions on Hologres. If you attach one of the system policies to the RAM user, the RAM user is granted all the permissions defined in the system policy.

     Policy	Description
     AliyunHologresFullAccess	Grants full access permissions on Hologres. Note This policy does not include the permissions to use Hologres instances. If you want to use a Hologres instance, you must create a user in the Hologres instance as the superuser and log on to and use the Hologres instance as the created user. For more information, see FAQ about RAM user permissions on instances. Take note of the following items about the permissions of a RAM user to which this policy is attached: The RAM user is authorized to view information about all instances in the Hologres console. The information includes the instance list, instance details, and metrics. The RAM user is authorized to perform operations that involve billing. For example, you can purchase instances, upgrade or downgrade instance specifications, renew instances, stop instances, or delete instances as the RAM user. The RAM user is authorized to log on to and use the HoloWeb console. The RAM user is authorized to perform all operations on instances after you purchase the instances as the RAM user. In this case, both the RAM user and the Alibaba Cloud account are superusers of the instances. By default, the RAM user is not authorized to perform operations on the instances that are created by using the Alibaba Cloud account. To allow the RAM user to perform the operations, you can use the Alibaba Cloud account to grant the required permissions to the RAM user. For more information, see Grant the development permissions on a Hologres instance to RAM users. The RAM user is not authorized to query all user permissions on the User Management page in the HoloWeb console. You can attach the AliyunRAMReadOnlyAccess policy to the RAM user. This way, the RAM user is granted the ListUser permission and can query all user permissions on the User Management page.
     AliyunBSSOrderAccess	Grants permissions to view, pay for, and cancel orders in the Billing Management console. If you attach this policy to a RAM user, the RAM user can upgrade or downgrade instance specifications and renew instances in the Hologres console.
     AliyunRAMReadOnlyAccess	Grants read-only permissions on RAM. If you attach this policy to a RAM user, the RAM user can view the information about all the RAM users and RAM roles of the Alibaba Cloud account to which the RAM user belongs on the User Management page in the HoloWeb console.
     AliyunHologresReadOnlyAccess	Grants read-only permissions on Hologres. Take note of the following items about the permissions of a RAM user to which this policy is attached: The RAM user is authorized to view information about all instances in the Hologres console. The information includes the instance details and metrics. The RAM user is authorized to log on to and use the HoloWeb console. The RAM user is not authorized to perform operations that involve billing. For example, you cannot purchase instances, or upgrade or downgrade instance specifications as the RAM user. The RAM user is not authorized to perform operations on instances. To allow the RAM user to perform the operations, you can use the Alibaba Cloud account to grant the required permissions on the instances to the RAM user. The list of all RAM users in the Alibaba Cloud account is not displayed in the Hologres console or HoloWeb console if you log on to the console as the RAM user. To view the list of all RAM users, you must attach the AliyunRAMReadOnlyAccess policy to the RAM user.

     Note

     • If you purchase an instance as a RAM user, both the RAM user and the Alibaba Cloud account are superusers by default.

     • If you use an Alibaba Cloud account to purchase an instance, you can use the instance by using the Alibaba Cloud account by default. You can use the instance as a RAM user only after you use the Alibaba Cloud account to grant related permissions to the RAM user.

   • Custom Policy

     You can click Create Policy to create a custom policy based on your business requirements.

     Important

     When you configure policies for a RAM user, you must attach the AliyunRAMReadOnlyAccess policy to the RAM user to ensure that the RAM user can access the Hologres console.

     

     On the Create Policy page, click the JSON tab. Then, configure the custom policy in the code editor.

     For example, you can enter the following policy configurations:

     Important

     Delete the comments from the following sample code before you run the code. Otherwise, the code cannot be run.

     {
         "Statement": [
             {  // Grant a RAM user the permissions to perform all operations. If you enter this configuration, you do not need to enter the following configurations.
                 "Effect": "Allow",
                 "Action": "hologram:*",// The permissions to perform all operations.
                 "Resource": "acs:hologram:*:<Alibaba Cloud account ID>:instance/*"// The permissions apply to all instances in all regions. <The asterisk (*) cannot be replaced with an instance ID.>
             },
             {   // Grant a RAM user the permissions to purchase or renew instances.
                 "Effect": "Allow",
                 "Action": "hologram:*",
                 "Resource": "acs:hologram:cn-<region >:<Alibaba Cloud account ID>:instance/*"
             },
             {   // Grant a RAM user the permission to delete instances.
                 "Effect": "Allow",
                 "Action": "hologram:DeleteInstance",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"//<The RAM user must be granted this permission before it can be used to delete instances. Otherwise, when the RAM user deletes an instance, a success message is returned but the instance is not deleted.>
             },
             {   // Grant a RAM user the permission to purchase instances. The RAM user must be granted this permission before it can be used to purchase instances.
                 "Effect": "Allow",
                 "Action": "bss:PayOrder",
                 "Resource": "acs:hologram:cn-<region >:<Alibaba Cloud account ID>:instance/*"//<Test failed.>
             },
             {   // Grant a RAM user the permission to view instance details.
                 "Effect": "Allow",
                 "Action": "hologram:GetInstance",
                 "Resource": "acs:hologram:cn-<region >:<Alibaba Cloud account ID>:instance/*" //<The asterisk (*) can be replaced with an instance ID.>
             },
             { // Grant a RAM user the permission to view the instance list.
                 "Effect": "Allow",
                 "Action": "hologram:ListInstances",
                 "Resource": "acs:hologram:cn-<region >:<Alibaba Cloud account ID>:instance/*"//<The asterisk (*) cannot be replaced with an instance ID.>
             },
             {  // Grant a RAM user the permission to suspend instances.
                 "Effect": "Allow",
                 "Action": "hologram:StopInstance",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {  // Grant a RAM user the permission to resume instances.
                 "Effect": "Allow",
                 "Action": "hologram:ResumeInstance",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {  // Grant a RAM user the permission to view the metrics of instances.
                 "Effect": "Allow",
                 "Action": "hologram:GetInstanceMetrics",
                 "Resource": "acs:hologram:cn-<region >:<Alibaba Cloud account ID>:instance/*"//<The asterisk (*) can be replaced with an instance ID.>
             },
             {  // Grant a RAM user the permission to change the network types of instances.
                 "Effect": "Allow",
                 "Action": "hologram:UpdateInstanceNetworkType",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             }.
             {  // Grant a RAM user the permission to access HoloWeb.
                 "Effect": "Allow",
                 "Action": "hologram:HoloWebAccess",
                 "Resource": "*"
             }      
         ],
         "Version": "1"
     }

     The following table describes the parameters in the syntax.

     Parameter	Description
     <region>	The region in which the Hologres instance resides. Example: beijing.
     <Alibaba Cloud account ID>	The ID of your Alibaba Cloud account.
     *	The IDs of all Hologres instances within your Alibaba Cloud account. You can also replace the asterisk (*) with the ID of a specific Hologres instance.

     Sample statement:

     acs:hologram:cn-beijing:4322xxxxx:instance/hhhgggxxxx

     Important

     The asterisk (*) in instance/* in the following configurations cannot be replaced with a specific instance ID:

     {
         "Statement": [
             {  // Grant a RAM user the permissions to perform all operations. If you enter this configuration, you do not need to enter the following configurations.
                 "Effect": "Allow",
                 "Action": "hologram:*",// The permissions to perform all operations.
                 "Resource": "acs:hologram:*:<Alibaba Cloud account ID>:instance/*"// The permissions apply to all instances in all regions.
             },
             {   // Grant a RAM user the permissions to purchase or renew instances.
                 "Effect": "Allow",
                 "Action": "hologram:*",
                 "Resource": "acs:hologram:cn-<region >:<Alibaba Cloud account ID>:instance/*"
             },
             {   // Grant a RAM user the permission to delete instances.
                 "Effect": "Allow",
                 "Action": "hologram:DeleteInstance",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {   // Grant a RAM user the permission to purchase instances. This permission must be granted if you want to purchase instances by using the RAM user.
                 "Effect": "Allow",
                 "Action": "bss:PayOrder",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             { // Grant a RAM user the permission to view the instance list.
                 "Effect": "Allow",
                 "Action": "hologram:ListInstances",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {  // Grant a RAM user the permission to suspend instances.
                 "Effect": "Allow",
                 "Action": "hologram:StopInstance",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {  // Grant a RAM user the permission to resume instances.
                 "Effect": "Allow",
                 "Action": "hologram:ResumeInstance",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {  // Grant a RAM user the permission to view the metrics of instances.
                 "Effect": "Allow",
                 "Action": "cms:DescribeMetricList", "cms:QueryMetricList"
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             },
             {  // Grant a RAM user the permission to change the network types of instances.
                 "Effect": "Allow",
                 "Action": "hologram:UpdateInstanceNetworkType",
                 "Resource": "acs:hologram:cn-<region>:<Alibaba Cloud account ID>:instance/*"
             }
         ],
         "Version": "1"
     }

   Click Next to edit policy information. In the dialog box that appears, configure the Name and Description parameters.

5. Click OK.

6. Click Complete.

FAQ about RAM user permissions related to operations in the Hologres console

FAQ about RAM user permissions on the use of instances

• Why am I unable to connect to and use Hologres instances as a RAM user?

  • Problem description

    The following error message is returned: role "<role_name>" does not exist.

  • Cause

    After Hologres instances are created, only the Alibaba Cloud account and the RAM user that is used to purchase Hologres instances are superusers of the instances by default. Other RAM users must be granted the permissions on the Hologres instances by superusers before the RAM users can connect to and use the Hologres instances.

  • Solution

    Note

    You can execute the select * from pg_user; statement to view the superusers of the current instance.

    • On the User Management page in the HoloWeb console, add users and grant the required permissions to the users. For more information, see Manager users.

    • Connect to the instance and execute the create user "<role_name>" statement. For more information, see Overview.

• Why am I unable to view the information on the User Management page and the Database Authorization page?

  • Problem description

    When a RAM user is used to log on to the Hologres console, information on the User Management page and the Database Authorization page cannot be viewed, and an error message is displayed, indicating that you do not have the permissions and need to ask the superuser to grant permissions on the instance to your account.

  • Cause

    The current RAM user does not have the development permissions on the instance. To view related information, you must be granted the specified development permissions on the instance.

  • Solution

    Grant the RAM user the development permissions on the instance by using your Alibaba Cloud account or as a superuser. For more information, see Grant the development permissions on a Hologres instance to RAM users.

• What do I do if I incorrectly delete superusers?

  • Problem description

    All superusers in an instance are incorrectly changed to common users.

    Note

    If you incorrectly change all superusers in an instance to common users, you cannot perform user management and most operations related to instances.

  • Solution

    Join the Hologres DingTalk group for technical support. For more information, see Obtain online support for Hologres.