Method to configure a cluster via automatic address generation

• US 20060015596A1
• Filed: 07/14/2004
• Published: 01/19/2006
• Est. Priority Date: 07/14/2004
• Status: Abandoned Application

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Mar, David Bryan, Sajnani, Bharat Mohan
• Application Number:
  US10/891,479
• Publication Number:
  US 20060015596A1
• Time in Patent Office: Days
• US Class Current: 709/222
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5092 by self-assignment, e.g. picking addresses at random and testing if they are already in use

Abstract

A method and system are provided for assigning network addresses to multiple nodes in a computer cluster. Each of the nodes in the cluster may be provided with access to a network that interconnects the various nodes of the cluster. Upon initialization of the cluster, each node, in turn, may issue a ping of one or more network addresses. If the ping does not elicit a response from any other node within the cluster, then the network address may be deemed available and the node that issued the ping may assign that network address to itself. If the ping did elicit a response from another node, then the node that issued the ping tries other network addresses until an available network address is found.

Claims

1. A method for assigning a network address to a node on a network comprising:

obtaining a set of network addresses;

broadcasting a network address from the set of network address onto the network;

determining if the network address has been assigned; and

if the address has not been assigned, then assigning the address to the node.

2. The method of claim 1, wherein the step of obtaining a set of network addresses comprises:

generating a pre-defined list of network addresses.

3. The method of claim 1, wherein the step of obtaining a set of network addresses comprises:

generating a random list of network addresses.

4. The method of claim 3, wherein the random list has a minimum value.

5. The method of claim 3, wherein the random list has a maximum value.

6. The method of claim 1, wherein the step of obtaining a set of network addresses comprises:

generating a range of network address.

7. The method of claim 6, wherein the range has a minimum value.

8. The method of claim 6, wherein the range has a maximum value.

9. The method of claim 1, wherein the network address is an Internet Protocol address.

10. A computer system comprising:

two or more nodes, each of the nodes having a processor constructed and arranged to execute applications, each of the nodes further operative with a network, each of the nodes further constructed and arranged to receive a ping containing a network address; and

an agent on each of the nodes, the agent constructed and arranged to generate a set of network addresses, the agent further constructed and arranged to determine if the pinged network address is assigned to another of the nodes or if the pinged network address is available for assignment to itself;

wherein when the node receives a ping, the agent determines whether the network address is available by listening for a response to the ping.

11. The system of claim 10, wherein the network address is an Internet Protocol address.

12. The system of claim 10, wherein the two or more nodes are further constructed and arranged to issue a ping containing the network address.

13. The system of claim 12, wherein the node is further constructed and arranged to detect a response to the ping and, if no response is received, then the node assigns the network address to itself.

14. A method for determining the network addresses for two or more nodes on a cluster comprising:

listening by a node a ping from other nodes, the ping containing a network address;

listening for responses to the ping; and

if no response is received, then assigning the network address to another node in the cluster.

15. The method of claim 14, wherein the network address is an Internet Protocol address.

16. A method for assigning a network address to a node in a cluster containing two or more nodes comprising:

detecting a ping, the ping containing the network address;

determining if the network address is assigned to the node and, if so, responding to the ping;

determining if the node issued the ping, and if not then listening for a response to the ping and if a response was not received then assigning the network address to another node in the cluster;

if the node issued the ping and no response was received then assigning the network address to the node, otherwise selecting another network address and issuing another ping containing the another network address.

17. The method of claim 16, wherein the step of selecting another network address comprises:

obtaining an address from a pre-defined list of network addresses.

18. The method of claim 16, wherein the step of selecting another network address comprises:

generating a random list of network addresses and selecting one network address from the list.

19. The method of claim 18, wherein the random list has a minimum value.

20. The method of claim 18, wherein the random list has a maximum value.

21. The method of claim 16, wherein the step of selecting another network address comprises:

generating a range of network address and selecting one network address from within the range.

22. The method of claim 21, wherein the range has a minimum value.

23. The method of claim 21, wherein the range has a maximum value.

24. The method of claim 16, wherein the network address is an Internet Protocol address.

25. A method for assigning a network address to a node in a cluster containing two or more nodes operative with a network comprising:

providing a pre-defined list of two or more network addresses;

at a pre-defined event, selecting a first address from the list of network addresses;

pinging the network with the first address;

determining if a response was received after the ping;

if no response was received after the ping, then assigning the first address to the node.

26. The method of claim 25, wherein the network address is an Internet Protocol address.

27. The method of claim 25, further comprising:

if the response was received, then selecting a next address from the list of network addresses.

28. The method of claim 27, further comprising:

pinging the network with the next address.

29. The method of claim 28, further comprising:

if no response was received after the ping, then assigning the next address to the node.

30. The method of claim 25, wherein the network has two or more clusters.