加入HA后的完全分布式集群搭建

节点规划表： 新项目开始前先把原来的进行备份 搭建步骤： 1. （Hadoop01和Hadoop02相互免秘钥） Setup passphraseless ssh Now check that you can ssh to the localhost without a passphrase: $ ssh localhost If you cannot ssh to localhost wit

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