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 |