Bootstrap

./sbin/start-dfs.sh时出现localhost: rcmd: socket: Permission denied

直接在终端输入【sudo gedit /etc/pdsh/rcmd_default

然后在打开的文件里输入【ssh】
再输入【./sbin/start-dfs.sh】
就能正常输出
Starting namenodes on [localhost]
Starting datanodes
Starting secondary namenodes [ash-virtual-machine]

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