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Resource Orchestration Service:Limits

Last Updated:Nov 22, 2023

This topic lists the limits of Resource Orchestration Service (ROS).

Templates

Item

Limit

Maximum number of templates that can be created within an Alibaba Cloud account

100

Maximum size of a template file

512 KB

Maximum number of versions of a template

100

Maximum number of users who can share a template

200

Stacks

Item

Limit

Maximum number of stacks that can be created within an Alibaba Cloud account

200

Maximum number of resources that can be created in a stack

300

Maximum number of concurrent operations that can be performed on stacks within an Alibaba Cloud account

50

Maximum number of levels that a nested stack can contain

5

Maximum timeout period of a stack

1,440 minutes (24 hours)

Minimum timeout period of a stack

10 minutes

Maximum size of a stack policy file

16 KB

Maximum size of a custom resource response

4,096 KB

Maximum number of change sets that can be created in a stack within an Alibaba Cloud account

20

Maximum size of a change set file

2,048 KB

Stack groups

Item

Limit

Maximum number of stack groups that can be created within an Alibaba Cloud account

100

Maximum number of instances that can be created in a stack group within an Alibaba Cloud account

2,000

Maximum number of concurrent operations that can be performed in stack groups within an Alibaba Cloud account

3,500

Maximum number of accounts within which a stack group operation can be performed

30

Maximum number of folders of resource directories in which a stack group operation can be performed

20

Maximum number of regions in which a stack group operation can be performed

20

Scenarios

Item

Limit

Maximum number of scenarios that can be created within an Alibaba Cloud account

500

Maximum number of resources that are supported in a scenario

300

Modules

Item

Limit

Maximum number of modules that can be created within an Alibaba Cloud account

100

Maximum number of versions of a module

100