Constraints and Limitations

When using COC, pay attention to the restrictions listed in Table 1.

**Table 1** Restrictions on COC
Functional Module	Object	Restriction
Public	Managing patches, scripts, jobs, or ECSs	A maximum of 200 instances can be selected for a single operation task.
Public	Managing patches, scripts, jobs, or ECSs	The timeout interval for executing a service ticket must be less than or equal to 86,400 seconds (24 hours).
Resource management	Installing OSs supported by UniAgent	Currently, the following Linux OS versions are supported: EulerOS 2.2 (64-bit) for Tenant 20210227 EulerOS 2.3 (64-bit) EulerOS 2.5 (64-bit) for Tenant 20210229 CentOS 7.2 (64-bit) CentOS 7.3 (64-bit) CentOS 7.4 (64-bit) CentOS 7.5 (64-bit) CentOS 7.6 (64-bit) for Tenant 20200925 (for resource image creation) CentOS 7.6 (64-bit) for Tenant 20210227 CentOS 7.6 (64-bit) for Tenant 20210525
	UniAgent client	If the CPU usage is greater than 10% or the memory is greater than 200 MB, the UniAgent client automatically restarts.
	Installing a UniAgent	A maximum of 100 UniAgent hosts can be installed at a time.
Application management	Application	An application must be within 5 layers.
Patch management	Patch baseline	A tenant can create a maximum of 50 (public baselines excluded) patch baselines.
Script management	Script content	The content of a user-defined script cannot exceed 4096 bytes.
Job management	Global parameters	The number of global parameters of a user-defined job cannot exceed 30.
WarRoom	WarRoom initiation rules	A maximum of 50 WarRoom initiation rule can be created by a tenant.
Forwarding rules	Forwarding rules	A tenant can create a maximum of 50 incident forwarding rules.
Integration management	Data records	COC retains only the latest 10 records of integrated data source.
O&M engineer management	Number of engineers	The number of engineers created by a tenant cannot exceed 50.
Schedule management	Roles	A maximum of 10 roles are allowed in a single shift scheduling scenario.
Account management	Resource types	Types of resources that can be managed Elastic Cloud Server (ECS)
Account management	Account baselines	The number of baseline accounts is less than or equal to 30, and the number of components associated with the accounts is less than or equal to 100.