Using MRS Multi-Tenancy

Scenarios

Tenants are used in resource control and service isolation scenarios. You need to determine the service scenarios of cluster resources and then plan tenants.

Multi-tenancy involves three types of operations: creating a tenant, managing tenants, and managing resources. Table 1 describes these operations.

**Table 1** Multi-tenant operations
Operation	Action	Description
Creating a tenant	Creating a tenant Creating a sub-tenant Adding a user and assigning a tenant role to the user	During the creation of a tenant, you can configure its computing resources, storage resources, and associated services based on service requirements. In addition, you can add users to the tenant and bind necessary roles to these users. A user to create a level-1 tenant needs to be bound to the Manager_administrator or System_administrator role. A user to create a sub-tenant needs to be bound to the role of the parent tenant at least.
Managing tenants	Managing a tenant directory Restoring tenant data Clearing non-associated queues of a tenant Deleting a tenant	You can edit tenants as services change. A user to manage or delete a level-1 tenant or restore tenant data needs to be assigned the Manager_administrator or System_administrator role. A user to manage or delete a sub-tenant needs to be assigned the role of the parent tenant at least.
Managing resources	Creating a resource pool Modifying a resource pool Deleting a resource pool Configuring a queue Configuring the queue capacity policy of a resource pool Clearing configuration of a queue	You can reconfigure resources for tenants as the services change. A user to manage resources needs to be assigned the Manager_administrator or System_administrator role.

Creating Tenants and Sub-Tenants

Administrators need to determine the service scenarios of cluster resources and then plan tenants. After that, administrators add tenants and configure dynamic resources, storage resources, and associated services for the tenants on MRS.

Table 2 shows the process for creating a tenant.

Figure 1 Creating a tenant

**Table 2** Operations for creating a tenant
Operation	Description
Creating a tenant	You can configure the compute resources, storage resources, and associated services of the tenant.
Creating a sub-tenant	You can configure the compute resources, storage resources, and associated services of the sub-tenant.
Adding a user and assigning the tenant role to the user	If a user wants to use the resources of tenant tenant1 or add or delete sub-tenants for tenant1, the user must be bound to both the Manager_tenant and tenant1_Cluster ID roles.