Method and system for providing high availability to computer applications

摘要

A set of system-level high availability services for computer systems, including a service that functions in general terms like an extension of the operating system. By providing High Availability (HA) at the system-level, modifications to the applications or the operating system kernel are not required.

主权项

1. A method, comprising:
preloading a high-availability shared library with a custom function using an operating system loader, wherein the high-availability shared library is provided within a set of system-level services, and the custom function initializes high-availability services for an application program before the application program is loaded on a primary node; registering, by the custom function of the high-availability shared library, the application program with a high availability protection program, wherein the high-availability shared library is loaded prior to registering the application program; after the registering, loading the application program on the primary node; and assigning a virtual IP address for the application program running on the primary nod, wherein modification of the application program or application program recompilation is not required.