DYNAMIC LOAD BALANCING SYSTEM AND METHOD THEREOF

• US 20120166630A1
• Filed: 12/22/2011
• Published: 06/28/2012
• Est. Priority Date: 12/23/2010
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: MIN, Ok Gee, KIM, Chang Soo, PARK, Choon Seo, SOK, Song Woo, LEE, Yong Ju, CHO, Jung Hyun, KIM, Hag Young, JEONG, Jin Hwan, LEE, Joong Soo
• Granted Patent: US 8,671,189 B2
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: G06F 9/5083 Techniques for rebalancing the load in a distributed system

Abstract

Disclosed is a dynamic load balancing system. The dynamic load balancing system includes a resource management master managing bare servers that do not execute services and having a hierarchical structure and a service master dynamically allocating the bare servers to a load balancing server or a service execution server or dynamically releasing the pre-allocated load balancing server or service execution server by the bare servers, in consideration of monitoring information on a state or performance of a server and service requirements to be provided.

Claims

1. A dynamic load balancing system balancing loads of a plurality of servers, the system comprising:

a resource management master that manages bare servers that do not execute services and has a hierarchical structure; and

a service master that dynamically allocates the bare servers to a load balancing server or a service execution server or dynamically releases the pre-allocated load balancing server or service execution server by the bare servers, in consideration of monitoring information on a state or performance of a server and service requirements to be provided.

2. The system of claim 1, wherein the load balancing server balances loads in software or hardware according to commands of the service master, the service server is connected to the load balancing server to execute services, and the load balancing server and the service server are automatically provisioned according to the commands of the service master.

3. The system of claim 1, wherein the service master includes:

a resource monitoring unit that monitors resource information provided from the resource management master;

a service management unit that receives requirements at the time of generating services and analyzes the received requirements so as to select the bare servers to be allocated to the load balancing server and the service server;

a provisioning unit that stores and installs software of the services corresponding to the bare servers selected according to the selection of the service management unit; and

a service monitoring unit that monitors a performance of the load balancing server and the service server and senses a failure thereof.

4. The system of claim 3, wherein the resource monitoring unit includes:

a resource performance sensing unit that monitors a performance of resource information of the bare servers and senses a failure thereof; and

a resource layer management unit that performs management so as not to allocate the corresponding resources to the load balancing server and the service server by excluding the corresponding resources, when the resource performance sensing unit senses the resource failure.

5. The system of claim 3, wherein the service management unit includes:

an input unit that receives requirements at the time of generating services;

a requirement analysis unit that analyzes requirements inputted through the input unit;

a server determination unit that determines to allocate the bare servers to the load balancing server or the service server according to the analysis results of the requirement analysis unit;

a resource allocation unit that performs a control to allocate the resources to the corresponding server and execute the automatic provisioning according to the determination of the server determination unit; and

a service server control unit that controls an operation of the service monitoring unit.

6. The system of claim 3, wherein the provisioning unit includes:

a storage unit that stores software corresponding to the services to be provided;

an installation unit that installs the software stored in the storage unit in the load balancing server and the service server; and

a service server setting unit that controls environment setting of the service server.

7. The system of claim 5, wherein the service monitoring unit includes:

a load sensing unit that monitors the performance of the load balancing server and the service server to sense an overload or a low load; and

a failure sensing unit that senses the failure of the load balancing server and the service server, the failure sensing unit providing the sensed results to the service server control unit, when the load sensing unit senses the overload or the low load.

8. The system of claim 1, wherein the resource management master includes:

a plurality of group masters that classify and manage the plurality of bare servers for each group; and

a cluster master that manages the plurality of group masters,

wherein the resource management master hierarchically manages the plurality of bare servers using the plurality of group masters and the cluster master.

9. The system of claim 1, wherein the provided service requirements include a service name, installation software, the minimum/maximum number of service servers, minimum/maximum performance requirements, and the number of service servers per load balancing server.

10. A dynamic load balancing system, comprising:

a load balancing server that balances loads in software or hardware;

a service server that is connected to the load balancing server to provide services;

a service monitoring unit that monitors a performance of the load balancing server and the service server and senses a failure thereof;

a plurality of bare servers that do not execute the services;

a resource management master that manages the plurality of bare servers in a hierarchical structure;

a resource monitoring unit that monitors resource information of the plurality of bare servers;

a service master that dynamically allocates the plurality of bare servers to the load balancing server or the service execution server or dynamically releases the pre-allocated load balancing server or service execution server based on the monitored results of the resource monitoring unit and the service monitoring unit; and

a provisioning unit that stores and installs software of the services corresponding to the bare servers selected according to the selection of the service master.

11. The system of claim 10, wherein the resource monitoring unit includes:

a resource performance sensing unit that monitors a performance of resource information of the bare servers and senses a failure thereof; and

a resource layer management unit that performs management so as not to allocate the corresponding resources to the load balancing server and the service server by excluding the corresponding resources, when the resource performance sensing unit senses the resource failure.

12. The system of claim 10, wherein the service master includes:

an input unit that receives requirements of the services at the time of generating services;

a requirement analysis unit that analyzes requirements input through the input unit;

a server determination unit that determines to allocate the bare servers to the load balancing server or the service server according to the analysis results of the requirement analysis unit;

a resource allocation unit that performs a control to allocate the resources to the corresponding server and execute the automatic provisioning according to the determination of the server determination unit; and

a service server control unit that controls an operation of the service monitoring unit.

13. The system of claim 12, wherein the provided service requirements include a service name, installation software, the minimum/maximum number of service servers, minimum/maximum performance requirements, and the number of service servers per load balancing server.

14. The system of claim 10, wherein the provisioning unit includes:

a storage unit that stores software corresponding to the services to be provided;

an installation unit that installs the software stored in the storage unit in the load balancing server and the service server; and

a service server setting unit that controls environment setting of the service server.

15. The system of claim 10, wherein the service monitoring unit includes:

a load sensing unit that monitors the performance of the load balancing server and the service server to sense an overload or a low load; and

a failure sensing unit that senses the failure of the load balancing server and the service server, the failure sensing unit providing the sensed results to the service server control unit, when the load sensing unit senses the overload or the low load.

16. The system of claim 10, wherein the resource management master includes:

a plurality of group masters that classify and manage the plurality of bare servers for each group; and

a cluster master that manages the plurality of group masters,

wherein the resource management master hierarchically manages the plurality of bare servers using the plurality of group masters and the cluster master.

17. A dynamic load balancing method, comprising:

inputting requirements of provided service;

allocating bare servers to a load balancing server and a service server or releasing the pre-allocated load balancing server and service server by the bare servers, so as to distribute loads based on the inputted requirements and resource information;

sensing loads of the service server;

reallocating the service server based on the results sensed at the sensing of the loads when service performance is not satisfied and repeating the sensing of the loads; and

sensing and providing a state of the load balancing server and the service server based on the results sensed at the sensing of the load when service performance is satisfied.

18. The method of claim 17, wherein the requirements include a service name, installation software, the minimum/maximum number of service servers, minimum/maximum performance requirements, the number of service servers per load balancing server.

19. The method of claim 17, wherein the providing periodically monitors and graphs the state of the load balancing server and the service server provides the state of the load balancing server and the service server to users.