haddop HostName 不能有特殊字符

hadoop集群中的HostName不能包含‘.’ '/' '_'等非法字符。

否则

  • 报错 Does not contain a valid host:port authority:
  • 无法启动集群
  • Node间无法建立链接
  • 配置文件设置失败 ERROR: Cannot set priority of namenode process

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