Querying Details About DB Instances

Function

This API is used to query DB instances according to search criteria.

Before calling an API, you need to understand the API in Authentication.
Before calling this API, obtain the required region and endpoint.

URI

URI format
GET https://{Endpoint}/v3/{project_id}/instances?id={id}&name={name}&type={type}&datastore_type={datastore_type}&vpc_id={vpc_id}&subnet_id={subnet_id}&offset={offset}&limit={limit}&tags={key}={value}
Example
- Querying all DB instances
  https://rds.cn-north-1.myhuaweicloud.com/v3/97b026aa9cc4417888c14c84a1ad9860/instances
- Querying DB instances based on search criteria
  https://rds.cn-north-1.myhuaweicloud.com/v3/97b026aa9cc4417888c14c84a1ad9860/instances?id=ed7cc6166ec24360a5ed5c5c9c2ed726in01&name=hy&type=Ha&datastore_type=MySQL&vpc_id=19e5d45d-70fd-4a91-87e9-b27e71c9891f&subnet_id=bd51fb45-2dcb-4296-8783-8623bfe89bb7&offset=0&limit=10&tags=rds001=001,rds002=002

Parameter description

**Table 1** Parameter description
Name	Type	Mandatory	Description
project_id	String	Yes	Specifies the project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.
id	String	No	Specifies the DB instance ID. The asterisk () is reserved for the system. If the instance ID starts with , it indicates that fuzzy match is performed based on the value following * Otherwise, the exact match is performed based on the instance ID. The value cannot contain only asterisks (*).
name	String	No	Specifies the DB instance name. The asterisk () is reserved for the system. If the instance name starts with , it indicates that fuzzy match is performed based on the value following * Otherwise, the exact match is performed based on the instance name. The value cannot contain only asterisks (*).
type	String	No	Specifies the instance type-based query. The value is Single, Ha, Replica, or Enterprise, which correspond to single instance, primary/standby instances, read replica, and distributed instance (enterprise) respectively.
datastore_type	String	No	Specifies the database type. Its value can be any of the following and is case-sensitive: MySQL PostgreSQL
vpc_id	String	No	Specifies the VPC ID. Method 1: Log in to VPC console and view the VPC ID in the VPC details. Method 2: See the "Querying VPCs" section in the Virtual Private Cloud API Reference.
subnet_id	String	No	Specifies the network ID of the subnet. Method 1: Log in to VPC console and click the target subnet on the Subnets page. You can view the network ID on the displayed page. Method 2: See the "Querying Subnets" section in the Virtual Private Cloud API Reference.
offset	Integer	No	Specifies the index position. If offset is set to N, the resource query starts from the N+1 piece of data. The value is 0 by default, indicating that the query starts from the first piece of data. The value must be a positive number.
limit	Integer	No	Specifies the number of records to be queried. The default value is 100. The value cannot be a negative number. The minimum value is 1 and the maximum value is 100.
tags	Array of objects	No	Specifies queries based on the instance tag keys and values. {key} indicates the tag key. It must be unique and cannot be empty. {value} indicates the tag value, which can be left empty. To query instances with multiple tag keys and values, separate key-value pairs with commas (,). A maximum of 10 key-value pairs are supported. For details, see Table 2.

**Table 2** tags field data structure description
Name	Type	Mandatory	Description
key	String	Yes	Specifies the tag key, which contains a maximum of 127 Unicode characters. key cannot be an empty string, a space, or left blank. Before using key, delete single-byte character (SBC) spaces before and after the value. The value cannot contain the following special characters: +/?#&=,%
value	String	No	Specifies the tag value, which contains a maximum of 255 Unicode characters. Before using value, delete SBC spaces before and after the value. The value cannot contain the following special characters: +/?#&=,% If the value is empty, it indicates any_value (querying any value).

Request

None

Response

Normal response

**Table 3** Parameter description
Name	Type	Description
instances	Array of objects	Indicates the DB instance information. For details, see Table 4.
total_count	Integer	Indicates the total number of resources.

**Table 4** instances field data structure description
Name	Type	Description
id	String	Indicates the DB instance ID.
name	String	Indicates the created DB instance name.
status	String	Indicates the DB instance status. Value: If the value is BUILD, the DB instance is being created. If the value is ACTIVE, the DB instance is normal. If the value is FAILED, the DB instance is abnormal. If the value is MODIFYING, the DB instance is being scaled up. If the value is REBOOTING, the DB instance is being rebooted. If the value is RESTORING, the DB instance is being restored. If the value is MODIFYING INSTANCE TYPE, the DB instance is changing from primary to standby. If the value is SWITCHOVER, the primary/standby switchover is being performed. If the value is MIGRATING, the DB instance is being migrated. If the value is BACKING UP, the DB instance is being backed up. If the value is MODIFYING DATABASE PORT, the database port is being changed.
private_ips	List<String>	Indicates the private IP address list. It is a blank string until an ECS is created.
private_dns_names	List<String>	Indicates the private domain name list of the DB instance. After a DB instance is created, you need to manually apply for a private domain name.
public_ips	List<String>	Indicates the public IP address list.
port	Integer	Indicates the database port number. The MySQL database port ranges from 1024 to 65535 (excluding 12017 and 33071, which are occupied by the RDS system and cannot be used). The PostgreSQL database port ranges from 2100 to 9500. If this parameter is not set, the default value is as follows: For MySQL, the default value is 3306. For PostgreSQL, the default value is 5432.
type	String	The value is Single, Ha, Replica, or Enterprise, which correspond to single instance, primary/standby instances, read replica, and distributed instance (enterprise), respectively.
ha	Object	Indicates the primary/standby DB instance information. Returned only when you obtain a primary/standby DB instance list. For details, see Table 5.
region	String	Indicates the region where the DB instance is deployed.
datastore	Object	Indicates the database information. For details, see Table 6.
created	String	Indicates the creation time in the "yyyy-mm-ddThh:mm:ssZ" format. T is the separator between the calendar and the hourly notation of time. Z indicates the time zone offset. For example, if the time zone offset is one hour, the value of Z is +0100. The value is empty when the DB instance is being created. After the DB instance is created, the value is not empty.
updated	String	Indicates the update time. The format is the same as that of the created field. The value is empty when the DB instance is being created. After the DB instance is created, the value is not empty.
db_user_name	String	Indicates the default username.
vpc_id	String	Indicates the VPC ID.
subnet_id	String	Indicates the network ID of the subnet.
security_group_id	String	Indicates the security group ID.
flavor_ref	String	Indicates the specification code.
volume	Object	Indicates the volume information. For details, see Table 7.
switch_strategy	String	Indicates the database switchover policy. The value can be reliability or availability, indicating the reliability first and availability first, respectively.
backup_strategy	Object	Indicates the backup policy. For details, see Table 8.
maintenance_window	String	Indicates the start time of the maintenance time window in the UTC format.
nodes	Array of objects	Indicates the primary/standby DB instance information. For details, see Table 9.
related_instance	Array of objects	Indicates the list of associated DB instances. For details, see Table 10.
time_zone	String	Indicates the time zone.
tags	Array of objects	Indicates the tag list. If there is no tag in the list, an empty array is returned. For details, see Table 11.

**Table 5** ha field data structure description
Name	Type	Description
replication_mode	String	Indicates the replication mode for the standby DB instance. The value cannot be empty. For MySQL, the value is async or semisync. For PostgreSQL, the value is async or sync. NOTE: async indicates the asynchronous replication mode. semisync indicates the semi-synchronous replication mode. sync indicates the synchronous replication mode.

**Table 6** datastore field data structure description
Name	Type	Description
type	String	Indicates the DB engine.
version	String	Indicates the database version.

**Table 7** volume field data structure description
Name	Type	Description
type	String	Indicates the volume type.
size	Integer	Indicates the volume size.

**Table 8** backup_strategy field data structure description
Name	Type	Description
start_time	String	Indicates the backup time window. Automated backups will be triggered during the backup time window. The time is in the UTC format.
keep_days	Integer	Indicates the number of days to retain the generated backup files. The value ranges from 0 to 732. If the value is 0, the automated backup policy is not configured or has been disabled. To extend the retention period, contact customer service. Automated backups can be retained for up to 2562 days.

**Table 9** nodes field data structure description
Name	Type	Description
id	String	Indicates the node ID.
name	String	Indicates the node name.
role	String	Indicates the node type. The value can be master, slave, or readreplica, indicating the primary node, standby node, and read replica node, respectively.
status	String	Indicates the node status.
availability_zone	String	Indicates the AZ.

**Table 10** related_instance field data structure description
Name	Type	Description
id	String	Indicates the associated DB instance ID.
type	String	Indicates the associated DB instance type. replica_of: indicates the primary DB instance. replica: indicates read replicas.

**Table 11** tags field data structure description
Name	Type	Description
key	String	Indicates the tag key.
value	String	Indicates the tag value.

The values of region and availability_zone are used as examples.

Example normal response

Query DB instances based on search criteria.

{
	"instances": [{
	"id": "ed7cc6166ec24360a5ed5c5c9c2ed726in01",
	"status": "ACTIVE",
	"name": "mysql-0820-022709-01",
	"port": 3306,
	"type": "Single",
	"region": "aaa",
	"datastore": {
		"type": "MySQL",
		"version": "5.7"
	},
	"created": "2018-08-20T02:33:49+0800",
	"updated": "2018-08-20T02:33:50+0800",
	"volume": {
		"type": "ULTRAHIGH",
		"size": 100
	},
	"nodes": [{
		"id": "06f1c2ad57604ae89e153e4d27f4e4b8no01",
		"name": "mysql-0820-022709-01_node0",
		"role": "master",
		"status": "ACTIVE",
		"availability_zone": "bbb"
	}],
	"private_ips": ["192.168.0.142"],

	"public_ips": ["10.154.219.187", "10.154.219.186"],
	"db_user_name": "root",
	"vpc_id": "b21630c1-e7d3-450d-907d-39ef5f445ae7",
	"subnet_id": "45557a98-9e17-4600-8aec-999150bc4eef",
	"security_group_id": "38815c5c-482b-450a-80b6-0a301f2afd97",
	"flavor_ref": "rds.mysql.s1.large",
	"switch_strategy": "",



	"backup_strategy": {
		"start_time": "19:00-20:00",
		"keep_days": 7
	},
	"maintenance_window": "02:00-06:00",
	"related_instance": [],


	"time_zone": "",
        "tags" [
            {
                "key": "rds001",
                "value": "001"
            },
            {
                "key": "rds002",
                "value": "002"
            }
         ]

}], "total_count": 1
}

Query all DB instances.

{
	"instances": [{
		"id": "ed7cc6166ec24360a5ed5c5c9c2ed726in01",
		"status": "ACTIVE",
		"name": "mysql-0820-022709-01",
		"port": 3306,
		"type": "Single",
		"region": "aaa",
		"datastore": {
			"type": "MySQL",
			"version": "5.7"
		},
		"created": "2018-08-20T02:33:49+0800",
		"updated": "2018-08-20T02:33:50+0800",
		"volume": {
			"type": "ULTRAHIGH",
			"size": 100
		},
		"nodes": [{
			"id": "06f1c2ad57604ae89e153e4d27f4e4b8no01",
			"name": "mysql-0820-022709-01_node0",
			"role": "master",
			"status": "ACTIVE",
			"availability_zone": "bbb"
		}],
		"private_ips": ["192.168.0.142"],

		"public_ips": ["10.154.219.187", "10.154.219.186"],
		"db_user_name": "root",
		"vpc_id": "b21630c1-e7d3-450d-907d-39ef5f445ae7",
		"subnet_id": "45557a98-9e17-4600-8aec-999150bc4eef",
		"security_group_id": "38815c5c-482b-450a-80b6-0a301f2afd97",
		"flavor_ref": "rds.mysql.s1.large",
		"switch_strategy": "",



		"backup_strategy": {
			"start_time": "19:00-20:00",
			"keep_days": 7
		},
		"maintenance_window": "02:00-06:00",
		"related_instance": [],


		"time_zone": "",
    		        "tags" [
     	       {
       		         "key": "rds001",
       		         "value": "001"
      		      },
     		       {
      		          "key": "rds002",
      		          "value": "002"
     		       }
   		      ]

	}, {
		"id": "ed7cc6166ec24360a5ed5c5c9c2ed726in02",
		"status": "ACTIVE",
		"name": "mysql-0820-022709-02",
		"port": 3306,
		"type": "Single",
		"region": "aaa",
		"datastore": {
			"type": "MySQL",
			"version": "5.7"
		},
		"created": "2018-08-20T02:33:49+0800",
		"updated": "2018-08-20T02:33:50+0800",
		"volume": {
			"type": "ULTRAHIGH",
			"size": 100
		},
		"nodes": [{
			"id": "06f1c2ad57604ae89e153e4d27f4e4b8no01",
			"name": "mysql-0820-022709-01_node0",
			"role": "master",
			"status": "ACTIVE",
			"availability_zone": "bbb"
		}],
		"private_ips": ["192.168.0.142"],

		"public_ips": ["10.154.219.187", "10.154.219.186"],
		"db_user_name": "root",
		"vpc_id": "b21630c1-e7d3-450d-907d-39ef5f445ae7",
		"subnet_id": "45557a98-9e17-4600-8aec-999150bc4eef",
		"security_group_id": "38815c5c-482b-450a-80b6-0a301f2afd97",
		"flavor_ref": "rds.mysql.s1.large",
		"switch_strategy": "",



		"backup_strategy": {
			"start_time": "19:00-20:00",
			"keep_days": 7
		},
		"maintenance_window": "02:00-06:00",
		"related_instance": [],


		"time_zone": "",
    		        "tags" [
     	       {
       		         "key": "rds001",
       		         "value": "001"
      		      },
     		       {
      		          "key": "rds002",
      		          "value": "002"
     		       }
   		      ]

	}],
	"total_count": 2
}