Creating a PTR Record

Function

Create a PTR record for an elastic IP address (EIP).

The same URI is used to create, modify, and delete PTR records. Different request bodies are used to implement different functions.

URI

PATCH /v2/reverse/floatingips/{region}:{floatingip_id}

For details, see Table 1.

**Table 1** Parameters in the URI
Parameter	Mandatory	Type	Description
region	Yes	String	Region of the tenant.
floatingip_id	Yes	String	EIP ID

Request

Parameter description

**Table 2** Parameters in the request
Parameter	Mandatory	Type	Description
ptrdname	Yes	String	Domain name of the PTR record A domain name is case insensitive. Uppercase letters will also be converted into lowercase letters.
description	No	String	PTR record description The value is left blank by default.
ttl	No	Integer	PTR record cache duration (in seconds) on a local DNS server. The longer the duration is, the slower the update takes effect. If your service address is frequently changed, set TTL to a smaller value. The value ranges from 1 to 2147483647. The default value is 300.
tags	No	Array of object	Resource tag. For details, see Table 3. The value is left blank by default.

**Table 3** Description of the **tags** field
Parameter	Mandatory	Type	Description
key	Yes	String	Tag key A key can contain up to 36 Unicode characters. key must be specified. Equal signs (=), asterisks (*), left angle brackets (<), right angle brackets (>), backslashes (\), commas (,), vertical bars (\|), and slashes (/) are not allowed. The first and last characters cannot be spaces.
value	No	String	Tag value Each value can contain a maximum of 43 Unicode characters and can be an empty string. Equal signs (=), asterisks (*), left angle brackets (<), right angle brackets (>), backslashes (\), commas (,), vertical bars (\|), and slashes (/) are not allowed. The first and last characters cannot be spaces.

Example request

Create a PTR record for the EIP whose ID is c5504932-bf23-4171-b655-b87a6bc59334:

PATCH https://{DNS_Endpoint}/v2/reverse/floatingips/region_id:c5504932-bf23-4171-b655-b87a6bc59334

{
    "ptrdname": "www.example.com",
    "description": "Description for this PTR record",
    "ttl": 300,
    "tags": [ 
        { 
          "key": "key1", 
          "value": "value1" 
        } 
    ] 
}

Response

Parameter description

**Table 4** Parameters in the response
Parameter	Type	Description
id	String	PTR record ID, which is in {region}:{floatingip_id} format
ptrdname	String	Domain name of the PTR record
description	String	PTR record description
ttl	Integer	PTR record cache duration (in seconds) on a local DNS server. The longer the duration is, the slower the update takes effect. If your service address is frequently changed, set TTL to a smaller value. The value ranges from 1 to 2147483647. The default value is 300.
address	String	EIP
status	String	Resource status For details, see Resource Status.
action	String	Requested operation on the resource The value can be CREATE, UPDATE, DELETE, or NONE. NONE indicates that no operation will be performed.
links	Object	Link to the current resource or other related resources. When a response is broken into pages, a next link is provided to retrieve all results. For details, see Table 5.

**Table 5** Parameters in the **links** field
Parameter	Type	Description
self	String	Link to the current resource
next	String	Link to the next page

Example response

{
    "id": "region_id:c5504932-bf23-4171-b655-b87a6bc59334",
    "ptrdname": "www.example.com.",
    "description": "Description for this PTR record",
    "address": "10.154.52.138",
    "action": "CREATE",
    "ttl": 300,
    "status": "PENDING_CREATE",
    "links": {
        "self": "https://Endpoint/v2/reverse/floatingips/region_id:c5504932-bf23-4171-b655-b87a6bc59334"
    }
}