Updated on 2022-08-16 GMT+08:00

Functions

Table 1 lists basic functions of the DNS service.

Before you use the DNS service, you'd better get familiar with Product Concepts to better understand the functions.

Table 1 Common DNS functions

Category

Function

Description

Private domain resolution

Private zone

You can create private domain names that take effect in associated VPCs. DNS allows you to create, modify, delete, and view private zones, associate private zones with VPCs, and disassociate private zones from VPCs.

  • Private zones can be created without the need to register domain names.
  • The private zone must be unique in the associated VPC.

For details, see Overview.

Associating a private zone with or disassociating a private zone from a VPC

You can associate a private zone with or disassociate a private zone from a VPC.

For details, see Associating a VPC with a Private Zone and Disassociating a VPC from a Private Zone.

Record set

A record set is a group of resource records that define the resolution type and value of a domain name. You can add, modify, delete, or view A, CNAME, MX, AAAA, TXT, PTR, and SRV record sets for private zones.

For details, see Overview.

Wildcard resolution

You can add record sets for all subdomains of a private domain name. DNS provides resolution services for all subdomains.

For details, see Creating a Wildcard DNS Record Set.

TTL

TTL is short for time to live, which specifies the cache period of resource records on a local DNS server, in seconds. The TTL value ranges from 300 to 2147483647.

Batch deleting private zones

You can delete multiple private zones at a time.

Record sets

Searching for record sets globally

DNS allows you to centrally manage record sets, including the following:

  • Searching for record sets by status, type, name, value, ID, or tag
  • Modifying or deleting record sets of private zones

For details, see Searching for Record Sets Globally.

Tag

Resource tag

You can configure tags for private zones and record sets. You can also use predefined tags provided by Tag Management Service (TMS) to quickly associate tags with resources.

Quota

Quota adjustment

Quotas are enforced for service resources on the platform to prevent unforeseen spikes in resource usage. Quotas can limit the number of resources available to users, for example, the maximum number of zones or record sets that you can create.

If the existing resource quota cannot meet your service requirements, you can apply for a higher quota.

For details, see Quota Adjustment.