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RedHat Cluster howto

Introduction

Here I wrote up a little tutorial how to configure a standard RHEL cluster. Configuring a RHEL cluster is quite easy but documentation is sparse and not well organized. We will configure a 4 nodes cluster with shared storage and Heatbeat over a different NIC (not the main data link).

Cluster configuration […]

RHCS(Red Hat Cluster Suite) quorum disk

Methods to deal with split-brain situation: 1. Redundant heartbeat path network port communication plus serial port communication 2. I/O fencing Remaining nodes separate failed node from its storage either by shutdown/reboot power port or storage port 3. Quorum disk Quorum disk is a kind of I/O fencing, but the reboot action is executed by failed […]