Help Center/ Cloud Operations Center/ Service Overview/ Constraints and Limitations
Updated on 2025-08-08 GMT+08:00
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Constraints and Limitations

Cloud Operations Center (COC) is universally applicable. However, it is not supported in some special regions and scenarios (such as dedicated regions). If you have any requirements, contact COC service personnel.

By June 2025, COC supports the following Huawei Cloud regions:

Table 1 Huawei Cloud regions supported by Cloud Operations Center (COC)

Region

ME-Riyadh

CN-Hong Kong

AP-Singapore

AP-Bangkok

AP-Jakarta

CN East-Shanghai 1

CN East-Shanghai2

CN East2

CN North-Ulanqab1

CN East-Qingdao

CN North-Beijing1

CN North-Beijing4

CN South-Guangzhou

CN South-Shenzhen

TR-Istanbul

LA-Sao Paulo1

LA-Santiago

Latin America-Mexico City

LA-Mexico City2

CN Southwest-Guiyang1

AF-Cairo

AF-Johannesburg

When using COC, pay attention to the restrictions listed in Table 2.

Table 2 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.

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

Applications

An application must be within 5 layers.

Patch management

Patch baselines

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.

War rooms

War room initiation rules

A maximum of 50 war room initiation rules can be created by a tenant.

Alarm conversion rules

Alarm conversion rules

A tenant can create a maximum of 50 alarm conversion rules

Data source management

Data records

COC retains only the latest 10 records of integrated data source.

Personnel management

Number of engineers

The number of personnel created by a tenant cannot exceed 50.

Shift schedule management

Roles

A maximum of 10 roles are allowed in a single shift scheduling scenario.

Account management

Resource types

Currently, ECSs can be managed.

Currently, account hosting (account import) is supported for the following types of resources:

  • ECSs
  • DCS instances
  • RDS instances
  • DMS instances

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.

Currently, COC supports IAM login, IAM federated user login (including IAM user SSO and virtual user SSO), and login via IAM Identity Center. Login via IAM agencies is not supported. You can select one from these supported login methods to use COC features, such as ticket creation and review. For details about each login method, see Personnel Management.