Capacity scaling of network resources

• US 10,693,975 B2
• Filed: 07/03/2019
• Issued: 06/23/2020
• Est. Priority Date: 01/27/2017
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Inventors: Chen, Huamin
• Primary Examiner(s): Ho, Duc C
• Application Number:
  US16/502,580
• Publication Number:
  US 20190327313A1
• Time in Patent Office: 356 Days
• CPC Class Codes: G06F 2209/503 Resource availability
• CPC Class Codes: G06F 9/5088 involving task migration
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 41/0897 by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
• CPC Class Codes: H04L 43/0805 by checking availability
• CPC Class Codes: H04L 43/087 Jitter
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 67/1029 using data related to the state of servers by a load balancer
• CPC Class Codes: H04L 67/1031 Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
• CPC Class Codes: H04L 67/148 Migration or transfer of sessions

Abstract

A mechanism for adjusting a resource availability of a data center is disclosed. A processing device may receive a first request from a client device, wherein the request includes a set of instructions and a host name assigned to an internet protocol (IP) address of a server at a first data center to execute the set of instructions. The processing device may determine that a resource availability of the second data center is less than the resource availability of the first data center. The processing device may send a second response to the client device to send the set of instructions to the IP address of the first data center.

Claims

1. A method comprising:

receiving, by a processing device of a first server, a first request from a client device, wherein the first request includes a task and a host name assigned to an internet protocol (IP) address of a second server at a first data center to perform the task;

determining that a resource availability of the first data center is less than a resource availability of a second data center;

in response to determining that the resource availability of the first data center is less than the resource availability of the second data center;

redirecting the first request from the IP address of the second server at the first data center to an IP address of a third server at the second data center; and

sending a second request to the first data center to migrate a virtual machine executing on the second server at the first data center to the third server at the second data center.

2. The method of claim 1, wherein redirecting the first request comprises sending a response to the client device that redirects the client device to the IP address of the third server at the second data center.

3. The method of claim 1, wherein redirecting the first request comprises:

sending a response to the client device that redirects the client device to an IP address of a load balancer at the first data center; and

setting the load balancer at the first data center to redirect a request from the client device to the IP address of the third server at the second data center.

4. The method of claim 1, wherein redirecting the first request comprises:

sending a response to the client device that redirects the client device to an IP address of a first load balancer at the first data center;

setting the first load balancer at the first data center to redirect a request from the client device to an IP address of a second load balancer at the second data center; and

setting the second load balancer at the second data center to redirect the request from the second load balancer to the IP address of the third server at the second data center.

5. The method of claim 1, wherein redirecting the first request comprises:

sending a response to the client device that redirects the client device to an IP address of a load balancer at the second data center; and

setting the load balancer at the second data center to redirect a request from the client device to the IP address of the third server at the second data center.

6. The method of claim 1, wherein determining that the resource availability of the first data center is less than the resource availability of the second data center further comprises:

sending a first latency request to the second server at the first data center;

determining a latency for receiving a first response to the first latency request;

sending a second latency request to the third server at the second data center;

determining a latency for receiving a second response to the second latency request; and

determining that the latency for receiving the first response is longer than the latency for receiving the second response indicating that the resource availability of the first data center is less than the resource availability of the second data center.

7. The method of claim 1, wherein determining that the resource availability of the first data center is less than the resource availability of the second data center further comprises:

sending a second availability request to a second load balancer of the second data center requesting resource availability information for the third server at the second data center;

receiving the resource availability information for the third server at the second data center indicating the resource availability of the second data center; and

determining that the resource availability of the second data center is greater than the resource availability of the first data center.

8. The method of claim 1, further comprising:

sending a first location request for location information to a processing device at the first data center;

receiving a first response indicating a first location of the first data center;

sending a second location request for location information to the processing device at the second data center;

receiving a second response indicating a second location of the second data center; and

determining that the first location is geographically closer to the client device than the second location.

9. The method of claim 1, wherein the second request to migrate the virtual machine comprises data that causes the second server to suspend the virtual machine, relocate configuration files and disk files for the virtual machine to the third server at the second data center while the virtual machine is suspended, migrate the virtual machine to the to the third server at the second data center while the virtual machine is suspended, and activate the virtual machine at the third server at the second data center.

10. The method of claim 1, wherein the second request to migrate the virtual machine comprises data that causes the second server to relocate configuration files and disk files for the virtual machine to the third server at the second data center, without any interruption in availability of the virtual machine, and migrate the virtual machine to the to the third server at the second data center, wherein the virtual machine is live while being migrated.

11. The method of claim 1, further comprising releasing resources dedicated to the virtual machine at the first data center after the virtual machine is migrated to the third server at the second data center.

12. A first server device comprising:

a memory to store instructions; and

a processing device, operatively coupled with the memory, to execute the instructions to;

receive a first request from a client device, wherein the first request includes a task and a host name assigned to an internet protocol (IP) address of a second server at a first data center to perform the task;

determine that a resource availability of the first data center is less than a resource availability of a second data center;

in response to the resource availability of the first data center being less than the resource availability of the second data center, redirect the first request from the IP address of the second server at the first data center to an IP address of a third server at the second data center; and

send a second request to the first data center to migrate a virtual machine executing on the second server at the first data center to the third server at the second data center.

13. The first server device of claim 12, wherein to redirect the first request, the processing device is further to send a response to the client device that redirects the client device to the IP address of the third server at the second data center.

14. The first server device of claim 12, wherein to redirect the first request, the processing device is further to:

send a response to the client device that redirects the client device to an IP address of a load balancer at the first data center; and

set the load balancer at the first data center to redirect a request from the client device to the IP address of the third server at the second data center.

15. The first server device of claim 12, wherein to redirect the first request, the processing device is further to:

send a response to the client device that redirects the client device to an IP address of a load balancer at the second data center; and

set the load balancer at the second data center to redirect a request from the client device to the IP address of the third server at the second data center.

16. The first server device of claim 12, wherein the second request to migrate the virtual machine comprises data that causes the second server to suspend the virtual machine, relocate configuration files and disk files for the virtual machine to the third server at the second data center while the virtual machine is suspended, migrate the virtual machine to the third server at the second data center while the virtual machine is suspended, and activate the virtual machine at the third server at the second data center.

17. The first server device of claim 12, wherein the second request to migrate the virtual machine comprises data that causes the second server to relocate configuration files and disk files for the virtual machine to the third server at the second data center, without any interruption in availability of the virtual machine, and migrate the virtual machine to the to the third server at the second data center, wherein the virtual machine is live while being migrated.

18. A non-transitory computer-readable storage medium, having instructions stored therein, which when executed, cause a processing device of a first server to:

receive a first request from a client device, wherein the first request includes a task and a host name assigned to an internet protocol (IP) address of a second server at a first data center to perform the task;

determine that a resource availability of the first data center is less than a resource availability of a second data center;

in response to determining that the resource availability of the first data center is less than the resource availability of the second data center;

redirect the first request from the IP address of the second server at the first data center to an IP address of a third server at the second data center; and

send a second request to the first data center to migrate a virtual machine executing on the second server at the first data center to the third server at the second data center.

19. The non-transitory computer-readable storage medium of claim 18, wherein to redirect the first request, the processing device is further to send a response to the client device that redirects the client device to the IP address of the third server at the second data center.

20. The non-transitory computer-readable storage medium of claim 18, wherein to redirect the first request, the processing device is further to:

send a response to the client device that redirects the client device to an IP address of a load balancer at the first data center; and

set the load balancer at the first data center to redirect a request from the client device to the IP address of the third server at the second data center.