Maintaining membership in high availability systems

• US 20020049845A1
• Filed: 03/16/2001
• Published: 04/25/2002
• Est. Priority Date: 03/16/2000
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: SGI International, Inc. (Hewlett-Packard Enterprise Company)
• Inventors: Nishimoto, Michael, Pramanick, Ira, Verma, Manish, Bradshaw, Robert David, Dandapani, Ajit, Castellano, Luca, Srivastava, Sharad, Sreenivasan, Padmanabhan, Mallena, Raghu
• Granted Patent: US 7,627,694 B2
• Time in Patent Office: Days
• US Class Current: 709/226
• 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 high availability computing system includes a plurality of computer nodes (for example, a server system) connected by a first and a second network, wherein the computer nodes communicate with each other to detect server failure and transfer applications to other computer nodes on detecting server failure. The system incorporates methods of maintaining high availability in a server cluster having a plurality of nodes. A group communications service, a membership service and a system resource manager are instantiated on each node and the group communications service, the membership service and the system resource manager on each node communicate with other nodes to detect node failures and to transfer applications to other nodes on detecting node failure.

Claims

1. A high availability computing system comprising a plurality of servers connected by a first and a second network, wherein the servers communicate with each other to detect server failure and transfer applications to other servers on detecting server failure.

2. A method of maintaining high availability in a server cluster having a plurality of nodes, comprising:

instantiating a group communications service, a cluster membership service and a system resource manager on each node; and

communicating between the group communications service, the membership service and the system resource manager on each node to detect node failures and to transfer applications to other nodes on detecting node failure.

3. An article comprising a computer readable medium having instructions thereon,

wherein the instructions, when executed in a computer, create a system for executing the method of claim 2.