wiki:waue/2009/0403

Version 3 (modified by waue, 16 years ago) (diff)

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HDFS權限管理用戶

  • hdfs的權限有owner, group, other三種
  • 而用戶的身份取決於client上的使用者 (用 whoami),群組為(bash -c groups)
  • 相關的操作:
    $ bin/hadoop dfs -mkdir own
    $ bin/hadoop dfs -chmod -R 755 own
    $ bin/hadoop dfs -chgrp -R waue own
    $ bin/hadoop dfs -chown -R waue own
    $ bin/hadoop dfs -lsr own
    
  • conf/hadoop-site.xml 可用參數:
    dfs.permissions = true 
    dfs.web.ugi = webuser,webgroup
    dfs.permissions.supergroup = supergroup
    dfs.upgrade.permission = 777
    dfs.umask = 022