MapReduce Service (MRS)

IAM provides system-defined identity policies to define common actions supported by cloud services. MRS provides system-defined policies that can be directly used in IAM. You can also create custom policies to supplement system-defined policies for more refined access control.

In addition to IAM, the Organizations service provides Service Control Policies (SCPs) to set access control policies.

SCPs do not actually grant any permissions to an entity. They only set the permissions boundary for the entity. When SCPs are attached to an organizational unit (OU) or a member account, the SCPs do not directly grant permissions to that OU or member account. Instead, the SCPs only determine what permissions are available for that member account or those member accounts under that OU. The granted permissions can be applied only if they are allowed by the SCPs.

To learn more about how IAM is different from Organizations for access control, see What Are the Differences in Access Control Between IAM and Organizations?.

This section describes the elements used by IAM custom identity policies and Organizations SCPs. The elements include actions, resources, and conditions.

For details about how to use these elements to create an IAM custom identity policy, see Creating a Custom Identity Policy.
For details about how to use these elements to create a custom SCP, see Creating an SCP.

Actions

Actions are specific operations that are allowed or denied in an identity policy.

The Access Level column describes how the action is classified (List, Read, or Write). This classification helps you understand the level of access that an action grants when you use it in a policy.
The Resource Type column indicates whether the action supports resource-level permissions.
- You can use a wildcard (*) to indicate all resource types. If this column is empty (-), the action does not support resource-level permissions and you must specify all resources ("*") in your policy statements.
- If this column includes a resource type, you must specify the URN in the Resource element of your policy statements.
- Required resources are marked with asterisks (*) in the table. If you specify a resource in a statement using this action, then it must be of this type.
For details about the resource types defined by MRS, see Resources.
Condition Key contains keys that you can specify in the Condition element of an identity policy statement for MRS.
- If the Resource Type column has values for an action, the condition key takes effect only for the listed resource types.
- If the Resource Type column is empty (-) for an action, the condition key takes effect for all resources that action supports.
- If the Condition Key column is empty (-) for an action, the action does not support any condition keys.
For details about the condition keys defined by MRS, see Conditions.
The Alias column lists the policy actions that are configured in identity policies. With these actions, you can use APIs for policy-based authorization. For details, see Policies and Identity Policies.

The following table lists the actions that you can define in policy statements for MRS.

**Table 1** Actions supported by MRS
Action	Description	Access Level	Resource Type (*: required)	Condition Key	Alias
mrs:cluster:createCluster	Grants permissions to create a cluster.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:RequestTag/<tag-key>,g:TagKeys,g:EnterpriseProjectId	mrs:cluster:create
mrs:cluster:deleteCluster	Grants the permission to delete a cluster.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:cluster:delete
mrs:cluster:listHosts	Grants permissions to query nodes in the cluster.	list	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:host:list
mrs:cluster:listFiles	Grants permissions to query the file list in the cluster.	list	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:file:list
mrs:cluster:createJob	Grants permissions to execute jobs in the cluster.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:job:submit
mrs:cluster:list	Grants permissions to query the cluster list.	list	-	g:RequestTag/<tag-key>,g:TagKeys,g:EnterpriseProjectId	-
mrs:cluster:listJobs	Grants permissions to query the job list of the cluster.	list	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:job:list
mrs:cluster:getJob	Grants permissions to query job details in the cluster.	read	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:job:get
mrs:cluster:getCluster	Grants permissions to query cluster details.	read	mrs:<region>:<account-id>:cluster:<cluster-id>	-	mrs:cluster:get
mrs:cluster:resizeNodes	Grants permissions to adjust cluster nodes.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:cluster:resize
mrs:cluster:updateClusterName	Grants permissions to rename a cluster.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	-
mrs:cluster:listTags	Grants permissions to query cluster tags.	list	-	g:EnterpriseProjectId	mrs:tag:list
mrs:cluster:updateTags	Grants permissions to add or delete cluster tags.	tagging	-	g:RequestTag/<tag-key>,g:TagKeys,g:EnterpriseProjectId	mrs:tag:create mrs:tag:delete mrs:tag:batchOperate
mrs:cluster:listClustersByTag	Grants permissions to query the list of clusters with specific tags.	list	-	g:RequestTag/<tag-key>,g:TagKeys	mrs:tag:listResource
mrs:cluster:stopJob	Grants permissions to stop cluster jobs.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:job:stop
mrs:cluster:deleteJobs	Grants permissions to delete cluster jobs in batches.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:job:batchDelete
mrs:cluster:stopSql	Grants permissions to cancel SQL execution.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:sql:cancel
mrs:cluster:createSql	Grants permissions to submit a SQL statement for execution.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:sql:execute mrs:job:checkSql
mrs:cluster:listPolicies	Grants permissions to obtain all auto scaling policies in a cluster.	list	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:cluster:policy
mrs:cluster:updatePolicies	Grants permissions to modify auto scaling policies of a cluster.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:cluster:policy
mrs:cluster:getAgencyMapping	Grants permissions to obtain user agent information.	read	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	-
mrs:cluster:updateAgencyMapping	Grants permissions to update user agent information.	write	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:cluster:syncUser
mrs:cluster:getSql	Grants permissions to obtain the SQL execution result.	read	mrs:<region>:<account-id>:cluster:<cluster-id>	g:EnterpriseProjectId	mrs:sql:get

Resources

A resource type indicates the resources that a policy applies to. If you specify a resource type for any action in Table 2, the resource URN must be specified in the policy statements using that action, and the policy applies only to resources of this type. If no resource type is specified, the Resource element is marked with an asterisk (*) and the policy applies to all resources. You can also set condition keys in a policy to define resource types.

The following table lists the resource types that you can define in policy statements for MRS.