RHCS套件實現nginx集羣的高可用，fence工做原理及配置

######一、實驗環境node server2 172.25.29.2 apache rhel6.5 server3 172.25.29.3 apache rhel6.5 server4 172.25.29.4 nginx rhel6.5 server5 172.25.29.5 nginx rhel6.5 localhost 172.25.29.250 fence ######二、高可用集羣的配

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