Red Hat CLUSTER SUITE - CONFIGURING AND MANAGING A CLUSTER 2006 Uživatelský manuál stáhnout pdf (Strana 10)

Handling Failures

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Software Failures

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Monitoring provided by resource agents handles restarting

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If a resource fails and is correctly restarted, no other action is taken

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In the event that the resource fails to restart, RHCM will stop and relocate the

entire service to another node

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Hardware, cluster failures

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If the cluster infrastructure evicts a node or nodes from the cluster; RHCM

selects new nodes for the services it was running based on the failover

domain if one exists

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If a NIC fails or a cable is pulled (but the node is still a member of the

cluster), the service will be relocated

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Double Faults – Usually difficult or impossible to choose a universally correct

course of action when one occurs. Ex: Node with iLO losing all power vs. pulling

all of its network cables.

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Red Hat CLUSTER SUITE - CONFIGURING AND MANAGING A CLUSTER 2006 Uživatelský manuál Strana 10