Systems and methods for dynamically provisioning cloud computing resources

• US 7,996,525 B2
• Filed: 12/31/2008
• Issued: 08/09/2011
• Est. Priority Date: 12/31/2008
• Status: Active Grant

• Current Assignee: SAP SE
• Original Assignee: SAP AG (SAP SE)
• Inventors: Stienhans, Frank, Klimentiev, Michael
• Primary Examiner(s): Avellino; Joseph E
• Assistant Examiner(s): MCLEOD, MARSHALL M
• Application Number:
  US12/347,781
• Publication Number:
  US 20100169477A1
• Time in Patent Office: 951 Days
• Field of Search: 709/223, 709/224, 709/226, 709/228
• US Class Current: 709/224
• CPC Class Codes: G06F 2209/508 Monitor
• CPC Class Codes: G06F 9/5083 Techniques for rebalancing the load in a distributed system

Abstract

In one embodiment the present invention includes a computer-implemented method comprising specifying configuration information for creating one or more software servers as images on a cloud computing system, specifying a processing load threshold, and continuously monitoring a processing load on one or more software servers. If the monitored load exceeds the processing load threshold, a request to the cloud computing system may be generated to instantiate an instance of one of said images. The method further includes creating a server instance on the cloud in response to the request, distributing the processing load across the one or more servers and the server instance, and monitoring the processing load on the one or more servers and the server instance.

Claims

1. A computer-implemented method comprising:

specifying configuration information for creating one or more first software application servers, wherein the configuration information are stored as images on a cloud computing system;

specifying a first processing load threshold;

specifying a second processing load threshold;

continuously monitoring a processing load on one or more second software application servers, the second software application servers including a central application server;

generating a request to the cloud computing system to instantiate an instance of one of said images if the monitored processing load exceeds the first processing load threshold, wherein the request to the cloud computing system comprises an identification of the central application server;

creating a first application server instance on the cloud computing system in response to the request, wherein said identification is used to establish a connection between the first application server instance and the central application server;

registering the first application server instance with the central application server;

distributing the processing load across the one or more second software application servers and the first application server instance;

monitoring the processing load on the one or more second software application servers and the first application server instance, wherein the processing load is monitored separately on each server, and wherein distributing the processing load across the one or more second servers and the first application server instance is based on the monitored load of the one or more second servers and the first application server instance;

generating a second request to the cloud computing system to de-instantiate the first application server instance or one of the second software application servers, but not the central application server, if the monitored processing load is below the second processing load threshold; and

suspending said first application server instance or said one of the second software application servers on the cloud computing system in response to the request.

2. The method of claim 1 further comprising moving state information for a first user from the central application server to the first application server instance wherein:

specifying a second processing load threshold;

generating a second request to the cloud computing system to de-instantiate the first application server instance if the monitored processing load is below the second processing load threshold; and

suspending the first application server instance on the cloud computing system in response to the request.

3. The method of claim 1 wherein the processing load is monitored separately on each server, and wherein distributing the processing load across the one or more second servers and the first application server instance is based on the monitored load of the one or more second servers and the processing load of the first application server instance the central application server includes state information for a plurality of users.

4. A non-transitory computer readable medium embodying a computer program for performing a method, said method comprising:

specifying configuration information for creating one or more first software application servers, wherein the configuration information are stored as images on a cloud computing system;

specifying a first processing load threshold;

specifying a second processing load threshold;

continuously monitoring a processing load on one or more second software application servers, the second software application servers including a central application server, wherein the central application server includes state information for a plurality of users;

generating a request to the cloud computing system to instantiate an instance of one of said images if the monitored processing load exceeds the first processing load threshold, wherein the request to the cloud computing system comprises an identification of the central application server;

creating a first application server instance on the cloud computing system in response to the request, wherein said identification is used to establish a connection between the first application server instance and the central application server;

registering the first application server instance with the central application server;

moving state information for a first user from the central application server to the first application server instance;

distributing the processing load across the one or more second software application servers and the first application server instance; and

monitoring the processing load on the one or more second software application servers and the first application server instance, wherein the processing load is monitored separately on each server, and wherein distributing the processing load across the one or more second servers and the first application server instance is based on the monitored load of the one or more second servers and the first application server instance;

generating a second request to the cloud computing system to de-instantiate the first application server instance or one of the second software application servers, but not the central application server, if the monitored processing load is below the second processing load threshold; and

suspending said first application server instance or said one of the second software application servers on the cloud computing system in response to the request.

5. The computer readable medium of claim 4 further comprising moving state information for a first user from the central application server to the first application server instance.

6. The computer readable medium of claim 4 wherein the central application server includes state information for a plurality of users.

7. A non-transitory computer readable medium embodying a computer program for performing a method, said method comprising:

specifying configuration information for creating one or more first software application servers, wherein the configuration information are stored as images on a cloud computing system;

specifying a processing load threshold;

continuously monitoring a processing load on one or more second software application servers, the second software application servers including a central application server;

generating a request to the cloud computing system to instantiate an instance of one of said images if the monitored processing load exceeds the processing load threshold, wherein the request to the cloud computing system comprises an identification of the central application server;

creating a first application server instance on the cloud computing system in response to the request, wherein said identification is used to establish a connection between the first application server instance and the central application server;

registering the first application server instance with the central application server;

distributing the processing load across the one or more second servers and the first application server instance;

monitoring the processing load on the one or more second servers and the first application server instance.

8. The computer readable medium of claim 7 wherein the one or more second servers form a logical network, and wherein the created first application server instance becomes part of the logical network.

9. The computer readable medium of claim 7 wherein the distributing is performed by a load balancer.

10. The computer readable medium of claim 7 further comprising repeating the generating, creating, and distributing steps.

11. The computer readable medium of claim 7 further comprising moving state information for a first user from the central application server to the first application server instance.

12. The computer readable medium of claim 7 wherein the central application server includes state information for a plurality of users.