Grant other Alibaba Cloud accounts access to your reserved capacity so they can launch ECS instances from the shared pool.
Prerequisites
You have created one of the following resource shares:
A resource share of type capacity reservation
A resource share of type elasticity assurance
Billing
Sharing a private pool is free. The owner pays for unused capacity and their own ECS instances; each sharee pays only for their own instances. Exact fees depend on how the pool was created.
Private pool from an immediate capacity reservation
The owner and each sharee are billed for the ECS instances they create.
The owner is also billed for the pool's unused capacity.
Example: Account A (owner) shares the pool with Account B.
Total pool capacity | ECS instances created by Account A | ECS instances created by Account B | Unused capacity |
10 | 3 | 2 | 5 |
Account A is billed for 3 instances and unused capacity equivalent to 5 instances.
Account B is billed for 2 created instances.
Private pool from an elasticity assurance
The owner and each sharee are billed for the ECS instances they create.
The owner is also billed the assurance fee for the full capacity of the associated elasticity assurance.
Example: Account A (owner) shares the pool with Account B.
Total pool capacity | ECS instances created by Account A | ECS instances created by Account B | Unused capacity |
10 | 3 | 2 | 5 |
Account A is billed the assurance fee for the total capacity of 10 instances, plus the cost of 3 instances.
Account B is billed for 2 created instances.
Permissions
The following table lists actions available to the owner and sharees.
Permission | Owner | Sharee |
View private pool information | Supported | Supported |
Modify private pool information | Supported | Not supported |
Create resource shares | Supported | Not supported |
View sharing records | Supported | Not supported |
View associated ECS instances | All instances (owner and sharees) | Sharee's own instances only |
View total capacity | Full pool capacity | Sharee's instances + unused capacity |
View capacity used by each account | All accounts | Sharee account only |
Unshare the pool | Supported | Not supported |
Capacity metrics differ by role. Owner: used capacity = all instances created by owner and sharees; total capacity = full pool. Sharee: used capacity = sharee's own instances; total capacity = sharee's instances + unused capacity. Example: a pool has 5 slots. The owner creates 2 instances, one sharee creates 1 instance, 2 slots remain unused. Owner sees used = 3, total = 5. Sharee sees used = 1, total = 3.
Share a private pool
The following steps show how Account A (owner) shares a private pool with Account B.
Log on to the ECS console - Resource Advisor with Account A.
In the top navigation bar, select a region and resource group.
In the left-side navigation pane, choose Guaranteed Provision > Resource Reservations.
On the Resource Reservations page, click the Private Pools tab.
Find an Active private pool, then in the Actions column, choose
> Initiate Share.Confirm that the target private pool's Provisioning Method is Capacity Reservation - Immediate and the Pool Type is Targeted. Then, in the Actions column of the corresponding row, click Initiate Share.
In the Share Private Pool dialog box, select a resource share and click OK.
Verify the sharing status.
On the Private Pools tab, click the pool ID or click Details in the Actions column.
Check the details and sharing status.
On the Resource Details tab, view the resource reservation, pool information, and linked ECS instances.
The Resource Details tab contains three sections:
Basic information includes Capacity Reservation ID, Instance Type, Instance Billing Method, Number of Instances, Effective Time, Region, Release Mode, Zone, Operating System, Tags, and Description.
Private pool information includes Private Pool ID, Status, Private Pool Name, Available Quantity, Provisioning Method, and Pool Type.
In the Associated Instances section, click Purchase Instance to create ECS instances associated with this private pool.
On the Share Management tab, view the resource shares and shared capacity usage.
Use a shared private pool
How Account B gains access depends on the account relationship:
Same resource directory: Account B can use the shared pool immediately.
Different resource directories: Account B must accept the sharing invitation first. See Resource Directory overview.
Accept the sharing invitation
Perform these steps if Account A and Account B are in different resource directories.
Log on to the Resource Management console with Account B.
In the left-side navigation pane, choose Resource Sharing > Resources Shared To Me.
In the top navigation bar, select the region of the shared private pool.
On the Shared To Me page, find the resource share containing the private pool and click Accept in the Status column.
In the Accept Resource Sharing Invitation message, click Accept.
After accepting, Account B can use the shared pool. Future resources added to the same resource share are accepted automatically.
Launch instances from the shared pool
Log on to the ECS console - Resource Advisor with Account B.
In the top navigation bar, select a region and resource group.
In the left-side navigation pane, choose Guaranteed Provision > Resource Reservations.
On the Resource Reservations page, click the Private Pools tab to view the shared pool.
Click Details in the Actions column to view pool details.
Click Purchase Instance in the Actions column to create ECS instances from the shared pool.
Unshare a private pool
After unsharing, Account B can no longer create ECS instances from the private pool. Existing instances created by Account B lose access to the pool capacity, and the system attempts to replenish the released capacity. If inventory is insufficient, the pool's total capacity is reduced.
Log on to the ECS console - Resource Advisor with Account A.
In the top navigation bar, select a region and resource group.
In the left-side navigation pane, choose Guaranteed Provision > Resource Reservations.
On the Private Pools tab, click the pool ID or click Details in the Actions column.
Click the Share Management tab.
Find the resource share containing the private pool and click Unshare in the Actions column.
In the confirmation dialog box, click OK.