Specifications

LifeKeeper Core
LifeKeeper Core
LifeKeeper Core is composed of four major components:
l LifeKeeper Core Software
l File System, Generic Application, Raw I/O and IP Recovery Kit Software
l LifeKeeper GUI Software
l LifeKeeper Man Pages
LifeKeeper Core Software
The LifeKeeper Core Software consists of the following components:
l LifeKeeper Configuration Database (LCD) - The LCD stores information about the LifeKeeper-
protected resources. This includes information on resource instances, dependencies, shared
equivalencies, recovery direction, and LifeKeeper operational flags. The data is cached in
shared memory and stored in files so that the data can be remembered over system boots.
l LCD Interface (LCDI) - The LCDI queries the configuration database (LCD) to satisfy requests
for data or modifications to data stored in the LCD. The LCDI may also be used by the
Application Recovery Kit to obtain resource state or description information.
l LifeKeeper Communications Manager (LCM) - The LCM is used to determine the status of
servers in the cluster and for LifeKeeper inter-process communication (local and remote).
Loss of LCM communication across all communication paths on a server in the cluster
38SteelEye LifeKeeper for Linux