Using IAM Roles or Policies to Grant Access to DLI

Prerequisites

Before granting permissions to a user group, familiarize yourself with the DLI permissions that can be added to the user group and select them accordingly based on actual needs.

For details about the system permissions supported by DLI, see Role/Policy-based Permission Management.

For details about the system permissions of other services, see System-defined Permissions.

Process Flow

Figure 1 Process for granting DLI permissions

Creating a Custom DLI Policy

If the predefined DLI permissions in the system do not meet your authorization requirements, you can create custom policies. For the actions that can be added to custom policies, refer to .

You can create custom policies in either of the following two ways:

• Visual editor: Select cloud services, actions, resources, and request conditions. This does not require knowledge of policy syntax.
• JSON: Create a JSON policy or edit an existing one.

For details, see Creating a Custom Policy.

Policy Fields

In the following example, an IAM user is granted the permission to create tables across all databases in all regions.

{
    "Version": "1.1",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "dli:database:createTable"
            ],
            "Resource": [
                "dli:*:*:database:*"
            ]
        }
    ]
}

• Version

  Version: 1.1. Policy: A fine-grained authorization strategy that defines the permissions required to perform actions on a specific cloud resource under certain conditions.

• Effect

  Function. The value can be Allow and Deny. If both Allow and Deny are found in statements, the Deny overrides the Allow.

• Action

  Specific action on a resource. A maximum of 100 actions are allowed.

  Figure 2 DLI actions
  
  

  • The format is Service name:Resource type:Action, for example, dli:queue:submit_job.
  • Service name: product name, such as dli, evs, or vpc. Only lowercase letters are allowed. Resource types and actions are not case-sensitive. You can use an asterisk (*) to represent all actions.
  • Resource type: For details, see Table 5.
  • Action: action registered with IAM.
• Condition

  Determines when a policy is in effect. A condition consists of a condition key and a condition operator.

  A key in the Condition element of a statement. There are global and service-specific condition keys.

  • Global-level condition key: The prefix is g:, which applies to all actions. For details, see the condition key description in Policy Syntax.
  • Service-level condition key: applies only to actions of the specific service.

  An operator must be used together with a condition key to form a complete condition statement. For details, see Table 2.

  IAM provides a set of DLI predefined condition keys. The following table lists the DLI predefined condition keys.

  Table 2 DLI request conditions

  Condition Key	Type	Operator	Description
  g:CurrentTime	Global	Date and time	Time when an authentication request is received NOTE: The time is expressed in the format defined by ISO 8601, for example, 2012-11-11T23:59:59Z.
  g:MFAPresent	Global	Boolean	Whether multi-factor authentication is used during user login
  g:UserId	Global	String	ID of the current login user
  g:UserName	Global	String	Current login username
  g:ProjectName	Global	String	Project that you have logged in to
  g:DomainName	Global	String	Domain that you have logged in to
  g:ResourceTag	Global	StringEquals	Resource tag value

• Resource

  The format is Service name:Region:Domain ID:Resource type:Resource path. The wildcard (*) indicates all options. For details about the resource types and path, see Table 5.

  Example:

  dli:*:*:queue:* indicates all queues.

Creating a Custom Policy

You can set actions and resources at varying levels based on scenarios.

1. Define an action.

   The format is Service name:Resource type:Action. You can use wildcards *. Example:

   Table 3 Action

   Action	Description
   dli:queue:submit_job	Submission operations on a DLI queue
   dli:queue:*	All operations on a DLI queue
   dli:*:*	All operations on all DLI resource types

   For details about the actions supported by system-defined permissions, see Common Operations Supported by DLI System Policy.

2. Define a resource.

   The format is Service name:Region:Domain ID:Resource type:Resource path. The wildcard (*) indicates all resources. You can flexibly set these five fields. The Resource path field can be set with varying levels of access control based on the specific scenario. If you need to set permissions for all resources under this service, you can leave this field unspecified.

   For details about how to define a resource, see Table 4.

   For details about the resource types and resource paths, see Table 5.

   Table 4 Resource

   Resource	Description
   DLI:*:*:table:databases.dbname.tables.*	DLI, any region, any account ID, all table resources of database dbname
   DLI:*:*:database:databases.dbname	DLI, any region, any account ID, resource of database dbname
   DLI:*:*:queue:queues.*	DLI, any region, any account ID, any queue resource
   DLI:*:*:jobs:jobs.flink.1	DLI, any region, any account ID, Flink job whose ID is 1

   Table 5 DLI resources and their paths

   Type	Resource	Path
   elasticresourcepool	DLI elastic resource pool	elasticresourcepools.name
   queue	DLI queue	queues.queuename
   database	DLI database	databases.dbname
   table	DLI table	databases.dbname.tables.tbname
   column	DLI column	databases.dbname.tables.tbname.columns.colname
   jobs	DLI Flink job	jobs.flink.jobid
   resource	DLI package	resources.resourcename
   group	DLI package group	groups.groupname
   datasourceauth	DLI datasource authentication information	datasourceauth.name
   edsconnections	Enhanced datasource connection	edsconnections.Connection ID
   variable	DLI global variable	variables.name
   sqldefendrule	SQL inspection rule	sqldefendes.*
   catalog	DLI data catalog	catalogs.name

   • Specific resources:
     Figure 3 Specific resources
     
   • All resources: all resources of the service
     Figure 4 All resources
     
3. Combine all of the preceding fields into a JSON string to create a complete policy. You can set multiple actions and resources, and you also have the option to create policies through the IAM console. For example:

   Create a policy that grants users the permission to create and delete databases, submit jobs for any queue, and delete tables under any account ID in any region of DLI.

   {
       "Version": "1.1",
       "Statement": [
           {
               "Effect": " Allow",
               "Action": [
                     "dli:database:createDatabase",
                     "dli:database:dropDatabase",
                     "dli:queue:submitJob",
                     "dli:table:dropTable"
               ],
               "Resource": [
                     "dli:*:*:database:*",
                     "dli:*:*:queue:*",
                     "dli:*:*:table:*"
               ]
           }
       ]
   }

Example Custom Policies

• Example 1: Allow policies
  • Allow users to create tables across all databases in all regions.

    {
        "Version": "1.1",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "dli:database:createTable"
                ],
                "Resource": [
                    "dli:*:*:database:*"
                ]
            }
        ]
    }

  • Allow users to query column col in the table tb of the database db in the region where the user is.

    {
        "Version": "1.1",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "dli:column:select"
                ],
                "Resource": [
                    "dli:xxx:*:column:databases.db.tables.tb.columns.col"
                ]
            }
        ]
    }

• Example 2: Deny policies

  A deny policy must be used together with other policies. Users need to be granted some operation permission policies first before a deny policy can be set within those permissions. Otherwise, if the user has no permissions at all, the deny policy has no practical effect.

  In the policies granted to a user, if an action has both Allow and Deny, the Deny takes precedence.

  • Deny users to create or delete databases, submit jobs (except the default queue), or delete tables.

    {
        "Version": "1.1",
        "Statement": [
            {
                "Effect": "Deny",
                "Action": [
                    "dli:database:createDatabase",
                    "dli:database:dropDatabase",
                    "dli:queue:submitJob",
                    "dli:table:dropTable"
                ],
                "Resource": [
                    "dli:*:*:database:*",
                    "dli:*:*:queue:*",
                    "dli:*:*:table:*"
                ]
            }
        ]
    }

  • Deny users to submit jobs on the demo queue.

    {
        "Version": "1.1",
        "Statement": [
            {
                "Effect": "Deny",
                "Action": [
                    "dli:queue:submitJob"
                ],
                "Resource": [
                    "dli:*:*:queue:queues.demo"
                ]
            }
        ]
    }

• Example 3: Tag-based authorization. You need to associate an action with a condition and define the key and value of the g:ResourceTag.

  The g:ResourceTag condition indicates resources that have the specified tag key=value. Only resource operations included in the policy actions are allowed.

  The key is case insensitive. Fuzzy match for values is currently not supported.

  {
      "Version": "1.1",
      "Statement": [
          {
              "Effect": "Allow",
              "Action": [
                  "dli:database:dropDatabase",
                  "dli:table:select",
                  "dli:database:createTable",
                  "dli:table:dropTable"
              ],
              "Condition": {
                  "StringEquals": {
                      "g:ResourceTag/key": [
                          "value"
                      ]
                  }
              }
          }
      ]
  }

DLI Resources

Resources are objects that exist within a service. In DLI, resources include the following, and you can select specific resources when creating custom policies by specifying the resource path.

DLI Request Condition

Request conditions are useful in determining when a custom policy is in effect. A request condition consists of condition keys and operators. Condition keys are either global or service-level and are used in the Condition element of a policy statement. Global condition keys (starting with g:) are available for operations of all services, while service-level condition keys (starting with a service name such as dli) are available only for operations of a specific service. An operator must be used together with a condition key to form a complete condition statement.

IAM provides a set of DLI predefined condition keys. The following table lists the DLI predefined condition keys.