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Method for controlling access of clients to a service in a cluster environment

A client and server technology, applied in the field of computer systems, can solve problems such as disconnection of external devices, and achieve the effect of high availability

Active Publication Date: 2014-11-05
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that after being fixed when the IP address is reassigned to the server, the external device is disconnected

Method used

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  • Method for controlling access of clients to a service in a cluster environment
  • Method for controlling access of clients to a service in a cluster environment

Examples

Experimental program
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Embodiment Construction

[0077] Hereinafter, like-numbered elements in the drawings are similar elements, or perform equivalent functions. Elements that have been discussed previously will not necessarily be discussed in later figures if the function is equivalent.

[0078] figure 1 A proposed system architecture 100 is depicted that is operable to run a process for controlling access of a plurality of clients to services provided by each of a plurality of servers.

[0079] The system 100 provides a client 101 . For example, client 101 may be an application server, database server, PC, laptop, PDA, tablet PC, or mobile phone. It may provide user authentication, network / server access, remote display, support for input / output including keyboard, mouse, local USB, and / or printing capabilities. Client 101 includes a lookup service, such as a DNS client.

[0080] Client 101 is communicatively coupled to clustered file store 107 via external network 105 . External network 105 may be, for example, an In...

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PUM

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Abstract

First, second, and third sets of addresses are created. The first set includes addresses registered in a name server; both the second and third sets include addresses not registered in the name server and that are disjoint. A first address of a first server that has failed and to which access is to be prohibited is moved from the first to the third set., is removed from the first server, assigned to a second server, and removed from the name server. Usage parameter values of the first address are monitored to determine whether at least one is below a value. If so, the first address is removed from the second server and moved from the third to the second set. Upon access to the first server no longer being prohibited, a second address of the second set is assigned to the first server and added to the name server.

Description

technical field [0001] The present invention relates to computer systems, and more particularly to methods for controlling access to services by multiple clients. Services are provided by each of the plurality of servers. Background technique [0002] Cluster systems provide a convenient platform for executing various types of complex applications. They consist of multiple servers combined in a unified system through software and network connections. The server provides a service such as a storage service to one or more external devices via an external network. [0003] Although cluster systems offer many advantages, they suffer from some limitations. One limitation has to do with the availability of clustered systems. Specifically, while a server of the cluster system is processing a request from an external device, the server may need to be repaired. The need for repair may be due to a failure of the server or the software hosted by the server may need to be updated. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/00H04L69/40
CPCH04L29/12207H04L61/1511H04L43/16H04L61/2061H04L69/40H04L61/5061H04L61/5076H04L61/4511H04L61/50H04L61/58G06F11/2005H04L43/0882
Inventor M.蒂德里克E.鲁格U.特洛彭斯
Owner IBM CORP
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