Adding an SRV Record Set

Scenarios

To tag a server to show what services it provides, you can add SRV record sets for a domain name.

For more information about each type of record sets, see Record Set Types and Configuration Rules.

Procedure

1. Go to the DNS console.
2. In the navigation pane on the left, choose Public Zones or Private Zones.

   The zone list is displayed.

3. (Optional) If you have selected Private Zones, click on the upper left corner to select the region and project.
4. Locate the zone and click Manage Record Set in the Operation column.
5. Click Add Record Set.

   The Add Record Set dialog box is displayed.

6. Configure the parameters based on Table 1.

   Table 1 Parameters for adding an SRV record set

   Parameter	Description	Example Value
   Name	Service (for example, FTP, SSH, or SIP) provided over the specified protocol (for example, TCP or UDP) on a host The format is _Service name._Protocol.	_ftp._tcp _ftp._tcp indicates that the host provides the FTP service over TCP.
   Type	Type of the record set A message may be displayed indicating that the record set you are trying to add conflicts with an existing record set. For details, see Why Is a Message Indicating Conflict with an Existing Record Set Displayed When I Add a Record Set?	SRV – Record servers providing specific services
   Line	Resolution line. The DNS server will return the IP address of the specific line, depending on where the visitors come from. This parameter is only configurable for public zone record sets. Default: returns the default resolution result irrespective of where the visitors come from. ISP: returns the resolution result based on visitors' carrier networks. For details, see Configuring ISP Lines. Region: returns the resolution result based on visitors' geographical locations. For details, see Configuring Region Lines.	Default
   TTL (s)	Cache duration of the record set on a local DNS server, in seconds. The value ranges from 1 to 2147483647, and the default value is 300. If your service address changes frequently, set TTL to a smaller value. Learn more about TTL.	300
   Value	Server address You can enter up to 50 values, each on a separate line. The value format is [priority] [weight] [port number] [server address]. Configuration rules: The priority, weight, and port number range from 0 to 65535. A smaller value indicates a higher priority. A larger value indicates a larger weight. The server address is the domain name of the target server. Ensure that the domain name can be resolved. NOTE: If the record set values have the same priority, requests to the domain name will be routed based on weights.	2 1 2355 example_server.test.com
   Weight	(Optional) Weight for the record set. The value ranges from 0 to 1000, and the default value is 1. This parameter is only configurable for public zone record sets. If a resolution line in a zone contains multiple record sets of the same type, you can set different weights to each record set. For details, see Configuring Weighted Routing.	1
   Tag	(Optional) Identifier of the record set. Each tag contains a key and a value. You can add up to 20 tags to a record set. For details about tag key and value requirements, see Table 2. NOTE: If you have configured tag policies for DNS, you need to add tags to your record sets based on the tag policies. If you add a tag that does not comply with the tag policies, record sets may fail to be created. Contact the administrator to learn more about tag policies.	example_key1 example_value1
   Description	(Optional) Supplementary information about the record set. The description can contain no more than 255 characters.	-

   Table 2 Tag key and value requirements

   Parameter	Requirements	Example Value
   Key	Cannot be left blank. Must be unique for each resource. Can contain no more than 36 characters. Cannot start or end with a space nor contain special characters =*<>\,|/	example_key1
   Value	Cannot be left blank. Can contain no more than 43 characters. Cannot start or end with a space nor contain special characters =*<>\,|/	example_value1

7. Click OK.
8. Switch back to the Record Sets tab.

   The added record set is in the Normal state.