Method, system and program products for managing cluster configurations

• US 6,847,993 B1
• Filed: 05/31/2000
• Issued: 01/25/2005
• Est. Priority Date: 05/31/2000
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Sohos, George, Novaes, Marcos N., Lucash, Jeffrey S., Laib, Gregory D., Goering, Ronald T.
• Primary Examiner(s): WON, MICHAEL YOUNG
• Application Number:
  US09/583,693
• Time in Patent Office: 1,700 Days
• Field of Search: 709/201, 709/220, 709/221, 709/223
• US Class Current: 709/221
• CPC Class Codes: G06F 2209/505 Clust
• CPC Class Codes: G06F 9/5061 Partitioning or combining of resources
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

Various components are provided to manage a clustered environment. These components include a System Registry that provides a global data storage; a Configuration manager that stores data locally on nodes of the clustered environment and globally within the System Registry; a Liveness component to provide status of communications paths of the cluster; a Group Services component that provides services to one or more other components of the clustered environment; and a Resource Management component that communicates with one or more resource controllers of the clustered environment. Each of the components of the clustered environment has one or more data and/or functional dependencies on one or more other components of the environment. However, relationships between the components are created such that the data and functional dependencies form an acyclic graph (i.e., a cycle of dependency relationships is avoided).

Claims

1. A method of managing cluster configurations of a computing environment, said method comprising:

executing a distributed configuration management component on a plurality of nodes of a cluster of said computing environment; and

providing configuration consistency of said cluster and cluster membership control using the distributed configuration management component, wherein said providing configuration consistency comprises performing a comparison between local configuration data at a local data storage and global configuration data at a global data repository, wherein the global data repository comprises a global data repository for the cluster, and wherein said providing cluster membership control comprises providing one or more cluster membership control operations associated with said cluster, said one or more cluster membership control operations including a define cluster operation used to initially automatically create the cluster, the define cluster operation initially creating a new cluster identifier for the cluster, defining the local data storage area for a node issuing the define cluster operation, and defining the global data repository area for the cluster.

2. The method of claim 1, wherein said providing comprises comparing data in a local storage with data in a global storage to determine whether a node can join said cluster.

3. The method of claim 1, wherein said providing configuration consistency comprises comparing data in the local data storage with data in the global data repository to determine whether one or more components of said cluster are to be initiated.

4. The method of claim 1, wherein said one or more operations comprise an undefine cluster operation used to erase a definition of the cluster.

5. The method of claim 1, wherein said one or more operations comprise a modify cluster operation used to modify one or more attributes of a definition of the cluster.

6. The method of claim 1, wherein said one or more operations comprise at least one of a define node operation used to define a node to the cluster, and an undefine node operation used to erase a definition of a node of the cluster.

7. The method of claim 1, wherein said one or more operations comprise at least one of a define registry server node operation used to define a particular node in the cluster as a registry server node, and an undefine registry server node operation used to remove a node definition as a registry server node.

8. The method of claim 1, wherein said one or more operations comprise a modify node operation used to change one or more attributes of a definition of a node of the cluster.

9. The method of claim 1, wherein said one or more operations comprise at least one of an online cluster operation used to initiate placing one or more nodes of the cluster online, and an offline cluster operation used to initiate placing one or more nodes of the cluster offline.

10. The method of claim 1, wherein said one or more operations comprise at least one of an online node operation used to place a node of the cluster online, and an offline node operation used to place a node of the cluster offline.

11. The method of claim 1, wherein said one or more operations comprise at least one of an online registry server operation used to initiate a system registry process on a node of the cluster, and an offline registry server operation used to stop a system registry process of a node of the cluster.

12. The method of claim 1, wherein said one or more operations comprise at least one of a define subnetwork operation used to define a subnetwork of the cluster, and an undefine subnetwork operation used to delete a subnetwork definition from the cluster.

13. The method of claim 1, wherein said one or more operations comprise a modify subnetwork operation used to modify one or more attributes of a subnetwork definition.

14. The method of claim 1, wherein said one or more operations comprise at least one of a define network operation used to create a network of the cluster, and an undefine network operation used to erase a network definition of the cluster.

15. The method of claim 1, wherein said one or more operations comprise a modify network operation used to modify one or more attributes of a network definition.

16. The method of claim 1, further comprising commencing execution, via an operating system of the computing environment, the distributed configuration management component.

17. The method of claim 1, further comprising maintaining one or more data structures usable in providing configuration consistency.

18. The method of claim 17, wherein at least one data structure of said one or more data structures is stored in the local data storage and the global data repository.

19. The method of claim 17, wherein said one or more data structures comprise a cluster data structure associated with said cluster.

20. The method of claim 19, wherein said cluster data structure comprises a unique cluster identifier for the cluster.

21. The method of claim 17, wherein said one or more data structures comprise at least one node definition data structure for at least one node of said plurality of nodes of said cluster.

22. The method of claim 17, wherein said one or more data structures comprise a registry server nodes data structure identifying one or more registry server nodes of said cluster.

23. A system of managing cluster configurations of a computing environment, said system comprising:

a distributed configuration management component executing on a plurality of nodes of a cluster of said computing environment; and

means for providing configuration consistency of said cluster and cluster membership control using the distributed configuration management component, wherein said means for providing configuration consistency comprises means for performing a comparison between local configuration data at a local data storage and global configuration data at a global data repository, wherein the global data repository comprises a global data repository for the cluster, and wherein said providing cluster membership control comprises providing one or more cluster membership control operations associated with said cluster, said one or more cluster membership control operations including a define cluster operation used to initially automatically create the cluster, the define cluster operation initially creating a new cluster identifier for the cluster, defining the local data storage area for a node issuing the define cluster operation, and defining the global data repository area for the cluster.

24. The system of claim 23, wherein said means for providing comprises means for comparing data in local data storage with data in the global data repository to determine whether a node can join said cluster.

25. The system of claim 23, wherein said means for providing configuration consistency comprises means for comparing data in the local data storage with data in a global data repository to determine whether one or more components of said cluster are to be initiated.

26. The system of claim 23, wherein said one or more operations comprise an undefine cluster operation used to erase a definition of the cluster.

27. The system of claim 23, wherein said one or more operations comprise a modify cluster operation used to modify one or more attributes of a definition of the cluster.

28. The system of claim 23, wherein said one or more operations comprise at least one of a define node operation used to define a node to the cluster, and an undefine node operation used to erase a definition of a node of the cluster.

29. The system of claim 23, wherein said one or more operations comprise at least one of a define registry server node operation used to define a particular node in the cluster as a registry server node, and an undefine registry server node operation used to remove a node definition as a registry server node.

30. The system of claim 23, wherein said one or more operations comprise a modify node operation used to change one or more attributes of a definition of a node of the cluster.

31. The system of claim 23, wherein said one or more operations comprise at least one of an online cluster operation used to initiate placing one or more nodes of the cluster online, and an offline cluster operation used to initiate placing one or more nodes of the cluster offline.

32. The system of claim 23, wherein said one or more operations comprise at least one of an online node operation used to place a node of the cluster online, and an offline node operation used to place a node of the cluster offline.

33. The system of claim 23, wherein said one or more operations comprise at least one of an online registry server operation used to initiate a system registry process on a node of the cluster, and an offline registry server operation used to stop a system registry process of a node of the cluster.

34. The system of claim 23, wherein said one or more operations comprise at least one of a define subnetwork operation used to define a subnetwork of the cluster, and an undefine subnetwork operation used to delete a subnetwork definition from the cluster.

35. The system of claim 23, wherein said one or more operations comprise a modify subnetwork operation used to modify one or more attributes of a subnetwork definition.

36. The system of claim 23, wherein said one or more operations comprise at least one of a define network operation used to create a network of the cluster, and an undefine network operation used to erase a network definition of the cluster.

37. The system of claim 23, wherein said one or more operations comprise a modify network operation used to modify one or more attributes of a network definition.

38. The system of claim 23, further comprising an operating system of the computing environment to commence execution of the distributed configuration management component.

39. The system of claim 23, further comprising means for maintaining one or more data structures usable in providing configuration consistency.

40. The system of claim 39, wherein at least one data structure of said one or more data structures is stored in the local data storage and the global data repository.

41. The system of claim 39, wherein said one or more data structures comprise a cluster data structure associated with said cluster.

42. The system of claim 41, wherein said cluster data structure comprises a unique cluster identifier for the cluster.

43. The system of claim 39, wherein said one or more data structures comprise at least one node definition data structure for at least one node of said plurality of nodes of said cluster.

44. The system of claim 39, wherein said one or more data structures comprise a registry server nodes data structure identifying one or more registry server nodes of said cluster.

45. A system of managing cluster configurations of a computing environment, said system comprising:

a plurality of nodes of a cluster of said computing environment; and

a distributed configuration management component of the cluster to execute on the plurality of nodes and to provide configuration consistency of said cluster and cluster membership control, wherein the providing of configuration consistency comprises performing a comparison between local configuration data at a local data storage and global configuration data at a global data repository, wherein the global data repository comprises a global data repository for the cluster, and wherein said providing cluster membership control comprises providing one or more cluster membership control operations associated with said cluster, said one or more cluster membership control operations including a define cluster operation used to initially automatically create the cluster, the define cluster operation initially creating a new cluster identifier for the cluster, defining the local data storage area for a node issuing the define cluster operation, and defining the global data repository area for the cluster.

46. At least one program storage device readable by a machine tangibly embodying at least one program of instructions executable by the machine to perform a method of managing cluster configurations of a computing environment, said method comprising:

executing a distributed configuration management component on a plurality of nodes of a cluster of said computing environment; and

providing configuration consistency of said cluster and cluster membership control using the distributed configuration component, wherein said providing configuration consistency comprises performing a comparison between local configuration data at a local data storage and global configuration data at a global data repository, wherein the global data repository comprises a global data repository for the cluster, and wherein said providing cluster membership control comprises providing one or more cluster membership control operations associated with said cluster, said one or more cluster membership control operations including a define cluster operation used to initially automatically create the cluster, the define cluster operation initially creating a new cluster identifier for the cluster, defining the local data storage area for a node issuing the define cluster operation, and defining the global data repository area for the cluster.

47. The at least one program storage device of claim 46, wherein said providing comprises comparing data in the local data storage with data in the global data repository to determine whether a node can join said cluster.

48. The at least one program storage device of claim 46, wherein said providing configuration consistency comprises comparing data in the local data storage with data in the global data repository to determine whether one or more components of said cluster are to be initiated.

49. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of a define cluster operation used to create the cluster, and an undefine cluster operation used to erase a definition of the cluster.

50. The at least one program storage device of claim 46, wherein said one or more operations comprise a modify cluster operation used to modify one or more attributes of a definition of the cluster.

51. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of a define node operation used to define a node to the cluster, and an undefine node operation used to erase a definition of a node of the cluster.

52. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of a define registry server node operation used to define a particular node in the cluster as a registry server node, and an undefine registry server node operation used to remove a node definition as a registry server node.

53. The at least one program storage device of claim 46, wherein said one or more operations comprise a modify node operation used to change one or more attributes of a definition of a node of the cluster.

54. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of an online cluster operation used to initiate placing one or more nodes of the cluster online, and an offline cluster operation used to initiate placing one or more nodes of the cluster offline.

55. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of an online node operation used to place a node of the cluster online, and an offline node operation used to place a node of the cluster offline.

56. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of an online registry server operation used to initiate a system registry process on a node of the cluster, and an offline registry server operation used to stop a system registry process of a node of the cluster.

57. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of a define subnetwork operation used to define a subnetwork of the cluster, and an undefine subnetwork operation used to delete a subnetwork definition from the cluster.

58. The at least one program storage device of claim 46, wherein said one or more operations comprise a modify subnetwork operation used to modify one or more attributes of a subnetwork definition.

59. The at least one program storage device of claim 46, wherein said one or more operations comprise at least one of a define network operation used to create a network of the cluster, and an undefine network operation used to erase a network definition of the cluster.

60. The at least one program storage device of claim 46, wherein said one or more operations comprise a modify network operation used to modify one or more attributes of a network definition.

61. The at least one program storage device of claim 46, wherein said method further comprises commencing execution, via an operating system of the computing environment, the distributed configuration management component.

62. The at least one program storage device of claim 46, wherein said method further comprises maintaining one or more data structures usable in providing configuration consistency.

63. The at least one program storage device of claim 62, wherein at least one data structure of said one or more data structures is stored in the local data storage and the global data repository.

64. The at least one program storage device of claim 62, wherein said one or more data structures comprise a cluster data structure associated with said cluster.

65. The at least one program storage device of claim 64, wherein said cluster data structure comprises a unique cluster identifier for the cluster.

66. The at least one program storage device of claim 62, wherein said one or more data structures comprise at least one node definition data structure for at least one node of said plurality of nodes of said cluster.

67. The at least one program storage device of claim 62, wherein said one or more data structures comprise a registry server nodes data structure identifying one or more registry server nodes of said cluster.