Querying Instance Sessions

Function

Query instance sessions by database or user. Currently, this function is supported only for MySQL DB instances.

Authorization Information

Each account has permissions to call all APIs, but IAM users must have the required permissions specifically assigned.

If you are using role/policy-based authorization, see the required permissions in Permissions Policies and Supported Actions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: Required)	Condition Key	Alias	Dependency
das::showCloudDBAInfo	read	-	-	-	-

URI

GET /v3/{project_id}/instances/{instance_id}/processes

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Explanation: Project ID of a tenant in a region To obtain this value, see Obtaining a Project ID. Constraints: N/A Values: The value can contain 32 characters. Only letters and digits are allowed. Default value: N/A
instance_id	Yes	String	Explanation: Unique ID of an instance Constraints: N/A Values: The value can contain 32 characters. Only letters and digits are allowed. Default value: N/A

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
db_user_id	Yes	String	Explanation: Database user ID, that is, ID of a connection established between the database account and the database. A database user ID is created by calling the API in Registering a Database User. Constraints: N/A Values: The value is a UUID containing 36 characters. Only letters, digits, and hyphens (-) are allowed. Default value: N/A
user	No	String	Explanation: Database user Constraints: At least one of the user and database parameters must be specified. Values: N/A Default value: N/A
database	No	String	Explanation: Database name Constraints: At least one of the user and database parameters must be specified. Values: N/A Default value: N/A
offset	No	Integer	Explanation: Index offset. The query starts from the next piece of data indexed by this parameter. If this parameter is set to 1 and limit is set to 10, only the second to eleventh records are displayed. Constraints: N/A Values: [0, 2^31-1] Default value: 0: The query starts from the first data record.
limit	No	Integer	Explanation: Number of records to be queried. If this parameter is set to 10, a maximum of 10 records can be displayed. Constraints: N/A Values: [1, 100] Default value: 100
node_id	No	String	Explanation: Unique ID of a node Constraints: N/A Values: The value can contain 32 characters. Only letters and digits are allowed. Default value: N/A

Request Parameters

None

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
processes	Array of Process objects	Explanation: Sessions Values: N/A
count	Long	Explanation: Total number of records Values: [0, 2^31-1]. The actual value depends on the query result.

**Table 4** Process
Parameter	Type	Description
id	String	Explanation: Session ID Values: N/A
user	String	Explanation: Username Values: N/A
host	String	Explanation: Host Values: N/A
database	String	Explanation: Database name Values: N/A
command	String	Explanation: Command Values: N/A
time	String	Explanation: Session duration Values: N/A
state	String	Explanation: Status Values: N/A
sql	String	Explanation: SQL statement Values: N/A
trx_executed_time	String	Explanation: Transaction duration Values: N/A

Example Request

Querying instance sessions

GET https://das.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/da304cd5bbb944de828759bc7be3d3fein01/processes?db_user_id=2c250598-1e3c-4d31-bc19-be1d866247e6&offset=0&limit=10

Example Responses

Status code: 200

{
  "processes" : [ {
    "id" : "1",
    "user" : "event_scheduler",
    "host" : "localhost",
    "database" : "--",
    "command" : "Daemon",
    "time" : "4260107",
    "state" : "Waiting on empty queue",
    "sql" : "",
    "trx_executed_time" : "0"
  } ],
  "count" : 1
}