ExpressCluster X 3.1 for Linux Getting Started Guide - Nec

Notes when creating ExpressCluster configuration dataNotes when creating ExpressCluster configurationdataNotes when creating a cluster configuration data and before configuring a cluster system isdescribed in this section.Environment variableThe following processes cannot be executed in an environment in which more than 255environment variables are set. When using the following function of resource, set the number ofenvironmental variables less than 256. Group start/stop processNote:Start/Stop script executed by EXEC resource when activating/deactivatingScript executed by Custom monitor Resource when monitoringScript before final action after the group resource or the monitor resource error is detected.The total number of environment variables set in the system and ExpressClustermust be less than 256. About 30 environment variables are set in ExpressCluster.Force stop function, chassis identify lamp linkageWhen using forced stop function or chassis identify lamp linkage, settings of BMC IP address, username and password of each server are necessary. Use definitely the user name to which thepassword is set.Server reset, server panic and power offWhen ExpressCluster performs “Server Reset”, “Server Panic,” or “Server power off”, servers arenot shut down normally. Therefore, the following may occur. Damage to a mounted file systemLost of unsaved dataSuspension of OS dump collection“Server reset” or “Server panic” occurs in the following settings: Action at an error occurred when activating/inactivating group resources-Sysrq Panic-Keepalive Reset-Keepalive Panic-BMC Reset-BMC Power Off-BMC Power Cycle-BMC NMISection II Installing ExpressClusterFinal action at detection of an error in monitor resource-Sysrq Panic-Keepalive Reset-Keepalive Panic-BMC Reset129