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ApsaraDB for ClickHouse:ModifyDBInstanceConnectionString

Last Updated:Dec 03, 2025

You can call the ModifyDBInstanceConnectionString operation to modify the connection address of a cluster.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

clickhouse:ModifyDBInstanceConnectionString

update

*EnterpriseDBCluster

acs:clickhouse:{#regionId}:{#accountId}:enterprisedbcluster/{#DBInstanceId}

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

No

The region ID.

cn-hangzhou

DBInstanceId

string

Yes

The cluster ID.

cc-xxxxx

ConnectionString

string

No

The connection address.

cc-2ze34****-clickhouse..clickhouseserver.pre.rds.aliyuncs.com

ConnectionStringPrefix

string

No

The prefix of the endpoint for the database connection.

cc-****-clickhouse

DisablePorts

string

No

  • Disables the specified database ports. To disable multiple ports, separate them with commas (,).

  • This parameter is supported only for clusters with a kernel version of 24.10.1.11098_1 or later.
    Important This parameter is not supported for clusters that were created with a kernel version earlier than 24.10.1.11098_1 and then upgraded to version 24.10.1.11098_1 or later.

9001,8123

DBInstanceNetType

string

No

ComputingGroupId

string

No

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

xxx-xxx-xxx

Data

object

The returned data.

DBInstanceID

integer

The cluster ID.

cc-xxxxx

ConnectionString

string

The connection address.

cc-2ze34****-clickhouse..clickhouseserver.pre.rds.aliyuncs.com

DBInstanceName

string

The cluster name.

cc-xxxxx

DisabledPorts

string

The disabled database ports.

9001,8123

Examples

Success response

JSON format

{
  "RequestId": "xxx-xxx-xxx",
  "Data": {
    "DBInstanceID": 0,
    "ConnectionString": "cc-2ze34****-clickhouse..clickhouseserver.pre.rds.aliyuncs.com",
    "DBInstanceName": "cc-xxxxx",
    "DisabledPorts": "9001,8123"
  }
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.