Method and apparatus for providing high availabilty to service groups within a datacenter

• US 8,489,721 B1
• Filed: 12/30/2008
• Issued: 07/16/2013
• Est. Priority Date: 12/30/2008
• Status: Active Grant

• Current Assignee: Veritas Technologies, LLC (Whitehouse Group Ltd.)
• Original Assignee: Symantec Corporation (NortonLifeLock Inc.)
• Inventors: Agarwal, Sandeep, Gokhale, Vrijendra, Chitale, Manjiri, Sontakke, Alok Ashok, Ramamurthy, Karthik
• Primary Examiner(s): Nguyen, Thu
• Assistant Examiner(s): WIDHALM, ANGELA M
• Application Number:
  US12/346,401
• Time in Patent Office: 1,659 Days
• Field of Search: None
• US Class Current: 709/223
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

A method and apparatus for providing high availability to service groups within a datacenter is described. In one embodiment, the method includes accessing policy master information regarding a plurality of nodes to identify at least one suitable node of the plurality of nodes for operating a service group, generating network topology information to identify at least one single point of failure amongst the plurality of nodes, processing high availability information regarding at least one computer resource at the at least one suitable node and determining availability indicia of the service group based upon the network topology information and the high availability information.

Claims

1. A method comprising:

identifying at least one suitable node for operating a service group by accessing policy master information, wherein the policy master information indicates the at least one suitable node of a plurality of nodes

identifying whether each of the at least one suitable node comprises a single point of failure by analyzing network topology information;

processing high availability information for the each of the at least one suitable node, wherein

the high availability information is received from the each of the at least one suitable node, and

the high availability information relates to at least one computer resource at the each of the at least one suitable node that is configured for use by the service group;

determining a high availability index for the each of the at least one suitable node, wherein

the high availability index for the each of the at least one suitable node is determined from a high availability index of the at least one computer resource at the each of the at least one suitable node; and

computing a high availability index for the service group, wherein

the high availability index for the service group is computed using the network topology information and the high availability index for the each of the at least one suitable node.

2. The method of claim 1, wherein the accessing the policy master information further comprises:

identifying at least one unsuitable node of the plurality of nodes for operating the service group by accessing the policy master information.

3. The method of claim 1, further comprising:

determining at least one of network connectivity failure or a node failure based on the network topology information.

4. The method of claim 1, further comprising:

generating a representation of the network topology information for presentation on a computer display.

5. The method of claim 1, further comprising:

generating the network topology information by examining a plurality of routes between a server and the plurality of nodes to identify at least one network device.

6. The method of claim 1, further comprising:

generating the network topology information by parsing routing information from at least one network device to determine a plurality of routes between a server and the plurality of nodes.

7. The method of claim 1, further comprising:

generating the network topology information by identifying at least one node of the plurality of nodes that is behind the at least one single point of failure.

8. The method of claim 1, further comprising:

in response to a failure at a first node of the plurality of nodes,

selecting a second node having a highest high availability index, wherein

the selecting is performed based on the high availability index for the each of the at least one suitable node, and

restarting the service group on the second node.

9. The method of claim 1, further comprising:

alerting a system administrator if a high availability index for at least one node of the plurality nodes falls below a configurable threshold.

10. The method of claim 1, wherein the high availability index of the at least one computer resource at the each of the at least one suitable node indicates a likelihood of a failure of the at least one computer resource.

11. The method of claim 1, wherein the high availability index for the service group is computed according to metrics for defining the robustness values for the each of the at least one suitable node.

16. The computer readable storage medium of claim 11, wherein the program instructions are further executable to:

communicate an alert message if a high availability index for at least one node of the plurality of nodes falls below a configurable threshold.

12. A non-transitory computer readable storage medium comprising program instructions executable to:

identify at least one suitable node for operating a service group by accessing policy master information, wherein the policy master information indicates the at least one suitable node of a plurality of nodes;

determine whether each of the at least one suitable node comprises a single point of failure by analyzing network topology information;

process high availability information for the each of the at least one suitable node, wherein

the high availability information is received from the each of the at least one suitable node, and

the high availability information relates to at least one computer resource at the each of the at least one suitable node that is configured for use by the service group;

determine a high availability index for the each of the at least one suitable node, wherein

the high availability index for the each of the at least one suitable node is determined from a high availability index of the at least one computer resource at the each of the at least one suitable node; and

compute a high availability index for the service group, wherein

the high availability index for the service group is computed using the network topology information and the high availability index for the each of the at least one suitable node.

13. The computer readable storage medium of claim 12, wherein the program instructions are further executable to:

identify at least one unsuitable node of the plurality of nodes for the service group by accessing the policy master information.

14. The computer readable storage medium of claim 12, wherein the program instructions are further executable to:

generate the network topology information by examining the network topology information to identify at least one node of the plurality of nodes that is behind the at least one single point of failure.

15. The computer readable storage medium of claim 12, wherein the program instructions are further executable to:

select a first node having a highest high availability index amongst each of the at least one suitable node in response to a failure at a second node of the plurality of nodes, wherein

the service group is restarted on the first node.

17. A system comprising:

one or more processors;

memory coupled to the one or more processors, wherein the memory stores program instructions executable by the one or more processors to;

identify at least one suitable node for operating a service group by accessing policy master information, wherein the policy master information indicates the at least one suitable node of a plurality of nodes;

determine whether each of the at least one suitable node comprises a single point of failure by analyzing network topology information;

process high availability information for the each of the at least one suitable node, wherein

the high availability information is received from the each of the at least one suitable node, and

the high availability information relates to at least one computer resource at the each of the at least one suitable node that is configured for use by the service group;

determine a high availability index for the each of the at least one suitable node, wherein

the high availability index for the each of the at least one suitable node is determined from a high availability index of the at least one computer resource at the each of the at least one suitable node; and

compute a high availability index for the service group, wherein

the high availability index for the service group is computed using the network topology information and the high availability index for the each of the at least one suitable node.

18. The system of claim 17, wherein the program instructions are further executable to:

select a first node having a highest high availability index amongst the each of the at least one suitable node in response to a failure at a second node of the plurality of nodes, wherein

the service group is restarted on the first node.

19. The system of claim 17, wherein the program instructions are further executable to:

communicate an alert message if a high availability index for at least one node of the plurality of nodes falls below a configurable threshold.

20. The system of claim 17, wherein the program instructions are further executable to:

generate an image that represents the network topology information for presentation on a computer display.