US 2020/0028892 A1 · DNS RESOLUTION OF INTERNAL TENANT-SPECIFIC DOMAIN ADDRESSES IN A MULTI-TENANT COMPUTING ENVIRONMENT

Abstract

A method and associated systems for a multi-tenant DNS mechanism. A multi-tenant computing environment hosts multiple private overlay networks, each of which comprises one tenant's domain. A multi-tenant DNS agent receives a DNS request to resolve a domain address located within the multi-tenant environment. The agent examines a special record within the request to determine whether the request requires resolving the domain address to an internal tenant-specific network identifier within a tenant's private network. The agent then forwards the request to a DNS server, notifying the server whether the requested address resolution is tenant-specific. If the request is not tenant-specific, the server performs a conventional DNS lookup. But if the request is tenant-specific, the DNS server instead performs a lookup into a tenant-specific local database that allows the domain address to be resolved to an internal address visible only within the multi-tenant computing environment.

Claims20

Dependent claims

A DNS-resolution system comprising a processor, a memory coupled to the processor, and a computer-readable hardware storage device coupled to the processor, the storage device containing program code configured to be run by the processor via the memory to implement a method for multi-tenant DNS resolution, the method comprising:

receiving a DNS request to resolve a domain address to an Internet Protocol address of a multi-tenant computing environment,
where the multi-tenant computing environment comprises a set of private networks that each host one tenant's domain of a set of tenant domains, and
where the DNS request comprises a Tenant-ID record that indicates that the Internet Protocol address is internal to one distinct domain of the set of tenant domains;
extracting the Tenant-ID record from the DNS request;
and
forwarding the DNS request to a multi-tenant DNS server along with a notification that the DNS request requires a tenant-specific address resolution and an identification of the distinct domain.

3 more elements

A method for multi-tenant DNS resolution comprising:

a processor of a multi-tenant DNS-resolution computer system receiving a DNS request to resolve a domain address to an Internet Protocol address of a multi-tenant computing environment,
where the multi-tenant computing environment comprises a set of private networks that each host one tenant's domain of a set of tenant domains, and
where the DNS request comprises a Tenant-ID record that indicates that the Internet Protocol address is internal to one distinct domain of the set of tenant domains;
extracting the Tenant-ID record from the DNS request;
and
forwarding the DNS request to a multi-tenant DNS server along with a notification that the DNS request requires a tenant-specific address resolution and an identification of the distinct domain.

3 more elements

A computer program product, comprising a computer-readable hardware storage device having a computer-readable program code stored therein, the program code configured to be executed by a DNS-resolution system comprising a processor, a memory coupled to the processor, and a computer-readable hardware storage device coupled to the processor, the storage device containing program code configured to be run by the processor via the memory to implement a method for multi-tenant DNS resolution, the method comprising:

receiving a DNS request to resolve a domain address to an Internet Protocol address of a multi-tenant computing environment,
where the multi-tenant computing environment comprises a set of private networks that each host one tenant's domain of a set of tenant domains, and
where the DNS request comprises a Tenant-ID record that indicates that the Internet Protocol address is internal to one distinct domain of the set of tenant domains;
extracting the Tenant-ID record from the DNS request;
and
forwarding the DNS request to a multi-tenant DNS server along with a notification that the DNS request requires a tenant-specific address resolution and an identification of the distinct domain.

3 more elements

Dependencies are inferred from the claim text.

Dns resolution of internal tenant-specific domain addresses in a multi-tenant computing environment

Life of this patent

Dns resolution of internal tenant-specific domain addresses in a multi-tenant computing environment

Life of this patent

Abstract

Claims20