Querying Change History of Instance Parameters

Function

This API is used to query parameter change history of a DB instance.

Before calling an API, you need to understand the API in Authentication.

Constraints

The following DB engines are supported: MySQL, PostgreSQL, and Microsoft SQL Server.

URI

URI format
GET /v3/{project_id}/instances/{instance_id}/configuration-histories?offset={offset}&limit={limit}&start_time={start_time}&end_time={end_time}&param_name={param_name}

Parameter description

**Table 1** Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.
instance_id	Yes	String	Instance ID.
offset	No	Integer	Pagination parameter. Default value: 0
limit	No	Integer	Pagination parameter. Default value: 10
start_time	No	String	Start time in the "yyyy-mm-ddThh:mm:ssZ" format. The default value is seven days before the current time. T is the separator between the calendar and the hourly notation of time. Z indicates the time zone offset. For example, in the Beijing time zone, the time zone offset is shown as +0800.
end_time	No	String	End time in the "yyyy-mm-ddThh:mm:ssZ" format. The default value is the current time. T is the separator between the calendar and the hourly notation of time. Z indicates the time zone offset. For example, in the Beijing time zone, the time zone offset is shown as +0800.
param_name	No	String	Parameter name.

Request

Parameter description
None
URI example
GET https://{endpoint}/v3/054e292c9880d4992f02c0196d3ea468/instances/1922f9c9144a421d9d1dfcb7377a849ain04/configuration-histories

Response

Normal response

**Table 2** Parameters
Parameter	Type	Description
total_count	Integer	Total number of historical records.
histories	Array of objects	Parameter change history list. For details, see Table 3.

**Table 3** histories data structure description
Parameter	Type	Description
parameter_name	String	Parameter name.
old_value	String	Old parameter value.
new_value	String	New parameter value.
update_result	String	Update result. Valid Value: SUCCESS FAILED
applied	Boolean	Whether the new value has been applied to the instance. true: indicates that the new value has been applied. false: indicates that the new value has not been applied.
update_time	String	Time when the value is updated.
apply_time	String	Time when the new value is applied to the instance.

Example normal response

{
   "total_count" : 3, 
   "histories" : [ { 
     "parameter_name" : "fill factor (%)", 
     "old_value" : "0", 
     "new_value" : "2", 
     "update_result" : "SUCCESS", 
     "applied" : true, 
     "update_time" : "2022-10-29T09:39:21+0000", 
     "apply_time" : "2022-10-31T01:46:29+0000" 
   }, { 
     "parameter_name" : "remote login timeout (s)", 
     "old_value" : "10", 
     "new_value" : "20", 
     "update_result" : "SUCCESS", 
     "applied" : true, 
     "update_time" : "2022-10-29T09:38:36+0000", 
     "apply_time" : "2022-10-29T09:38:36+0000" 
   }, { 
     "parameter_name" : "remote query timeout (s)", 
     "old_value" : "600", 
     "new_value" : "601", 
     "update_result" : "SUCCESS", 
     "applied" : true, 
     "update_time" : "2022-10-29T09:40:30+0000", 
     "apply_time" : "2022-10-29T09:40:30+0000" 
   } ] 
 }