Systems and methods for proactively evaluating failover nodes prior to the occurrence of failover events
View Patent ↗A computer-implemented method for proactively evaluating failover nodes prior to the occurrence of failover events may include (1) identifying at least one primary node that services at least one application, (2) identifying at least one failover node designated to service the application if the primary node were to fail, (3) prior to detecting failure of the primary node, proactively evaluating the failover node's ability to service the application if the primary node were to fail, and then (4) in response to determining that the failover node would be unable to adequately service the application if the primary node were to fail, proactively performing at least one corrective action that would cause the application to be adequately serviced if the primary node were to fail. Various other methods, systems, and computer-readable media are also disclosed.
1. A computer-implemented method for proactively evaluating failover nodes prior to the occurrence of failover events, at least a portion of the method being performed by a computing device comprising at least one processor, the method comprising:
identifying at least one primary node that services at least one application;
identifying at least one failover node designated to service the application if the primary node were to fail;
prior to detecting failure of the primary node, proactively evaluating the failover node's ability to service the application if the primary node were to fail by:
identifying a failover policy that specifies criteria that the failover node must satisfy in order to adequately service the application;
determining, by applying the criteria of the failover policy to the failover node, that the failover node would be unable to adequately service the application if the primary node were to fail;
in response to determining that the failover node would be unable to adequately service the application if the primary node were to fail, proactively performing at least one corrective action that would cause the application to be adequately serviced if the primary node were to fail.
2. The method of claim 1 , wherein identifying the failover node comprises:
retrieving a prioritization list that specifies a user-defined order for selecting failover nodes if the primary node were to fail;
identifying the failover node within the prioritization list.
3. The method of claim 1 , wherein identifying the failover node comprises:
identifying a plurality of failover candidates;
automatically generating, by applying the criteria of the failover policy to the failover candidates, a prioritization list that identifies a preferred order for selecting failover nodes from the failover candidates if the primary node were to fail;
identifying the failover node within the prioritization list.
4. The method of claim 3 , further comprising, upon generating the prioritization list, automatically configuring each failover node identified in the prioritization list to service the application.
5. The method of claim 1 , wherein proactively evaluating the failover node's ability to service the application comprises evaluating the failover node's ability to service the application on a periodic basis.
6. The method of claim 1 , wherein proactively evaluating the failover node's ability to service the application comprises:
registering with a monitoring framework to be notified of events that would impact the failover node's ability to service the application;
receiving notification, via the monitoring framework, of an event that would impact the failover node's ability to service the application.
7. The method of claim 1 , wherein proactively evaluating the failover node's ability to service the application comprises:
identifying at least one attribute flag associated with the failover node that identifies the failover node's ability to service the application;
determining, by evaluating the attribute flag associated with the failover node, that the failover node would be unable to adequately service the application if the primary node were to fail.
8. The method of claim 1 , wherein proactively performing the corrective action comprises at least one of:
generating at least one notification that indicates that the failover node is unable to adequately service the application;
automatically correcting at least one issue that is preventing the failover node from being able to adequately service the application;
preventing the failover node from servicing the application if the primary node were to fail;
prioritizing at least one other failover node that satisfies the criteria of the failover policy over the failover node.
9. The method of claim 8 , wherein prioritizing the other failover node that satisfies the criteria of the failover policy over the failover node comprises overriding a prioritization list that identifies a preferred order for selecting failover nodes if the primary node were to fail.
10. A system for proactively evaluating failover nodes prior to the occurrence of failover events, the system comprising:
an identification module programmed to:
identify at least one primary node that services at least one application;
identify at least one failover node designated to service the application if the primary node were to fail;
an evaluation module programmed to proactively evaluate, prior to detecting failure of the primary node, the failover node's ability to service the application if the primary node were to fail by:
identifying a failover policy that specifies criteria that the failover node must satisfy in order to adequately service the application;
determining, by applying the criteria of the failover policy to the failover node, that the failover node would be unable to adequately service the application if the primary node were to fail;
a correction module programmed to proactively perform, in response to the determination that the failover node would be unable to adequately service the application if the primary node were to fail, at least one corrective action that would cause the application to be adequately serviced if the primary node were to fail;
at least one processor configured to execute the identification module, the evaluation module, and the correction module.
11. The system of claim 10 , wherein the identification module identifies the failover node by:
retrieving a prioritization list that specifies a user-defined order for selecting failover nodes if the primary node were to fail;
identifying the failover node within the prioritization list.
12. The system of claim 10 , wherein the identification module identifies the failover node by:
identifying a plurality of failover candidates;
automatically generating, by applying the criteria of the failover policy to the failover candidates, a prioritization list that identifies a preferred order for selecting failover nodes from the failover candidates if the primary node were to fail;
identifying the failover node within the prioritization list.
13. The system of claim 12 , further comprising a configuration module programmed to automatically configure, upon generation of the prioritization list, each failover node identified in the prioritization list to service the application.
14. The system of claim 10 , wherein the evaluation module proactively evaluates the failover node's ability to service the application on a periodic basis.
15. The system of claim 10 , wherein the evaluation module proactively evaluates the failover node's ability to service the application by:
registering with a monitoring framework to be notified of events that would impact the failover node's ability to service the application;
receiving notification, via the monitoring framework, of an event that would impact the failover node's ability to service the application.
16. The system of claim 10 , wherein the evaluation module proactively evaluates the failover node's ability to service the application by:
identifying at least one attribute flag associated with the failover node that identifies the failover node's ability to service the application;
determining, by evaluating the attribute flag associated with the failover node, that the failover node would be unable to adequately service the application if the primary node were to fail.
17. The system of claim 10 , wherein the correction module proactively performs the corrective action by at least one of:
generating at least one notification that indicates that the failover node is unable to adequately service the application;
automatically correcting at least one issue that is preventing the failover node from being able to adequately service the application;
preventing the failover node from servicing the application if the primary node were to fail;
prioritizing at least one other failover node that satisfies the criteria of the failover policy over the failover node.
18. The system of claim 17 , wherein the correction module prioritizes the other failover node that satisfies the criteria of the failover policy over the failover node by overriding a prioritization list that identifies a preferred order for selecting failover nodes if the primary node were to fail.
19. A non-transitory computer-readable-storage medium comprising one or more computer-executable instructions that, when executed by at least one processor of a computing device, cause the computing device to:
identify at least one primary node that services at least one application;
identify at least one failover node designated to service the application if the primary node were to fail;
prior to detecting failure of the primary node, proactively evaluate the failover node's ability to service the application if the primary node were to fail by:
identifying a failover policy that specifies criteria that the failover node must satisfy in order to adequately service the application;
determining, by applying the criteria of the failover policy to the failover node, that the failover node would be unable to adequately service the application if the primary node were to fail;
in response to determining that the failover node would be unable to adequately service the application if the primary node were to fail, proactively perform at least one corrective action that would cause the application to be adequately serviced if the primary node were to fail.
20. The non-transitory computer-readable-storage medium of claim 19 , wherein the corrective action comprises at least one of:
generating at least one notification that indicates that the failover node is unable to adequately service the application;
automatically correcting at least one issue that is preventing the failover node from being able to adequately service the application;
preventing the failover node from servicing the application if the primary node were to fail;
prioritizing at least one other failover node that satisfies the criteria of the failover policy over the failover node.