hdfs 创建一个新用户

太过爱你忘了你带给我的痛 2023-03-12 07:16 1阅读 0赞

需要先在linux 上创建一个普通用户： hadoop-cw,并修改密码

[root@cm1 ~]# useradd hadoop-cw
    [root@cm1 ~]# passwd hadoop-cw
    Changing password for user hadoop-cw.
    New password:
    BAD PASSWORD: The password is shorter than 8 characters
    Retype new password:
    passwd: all authentication tokens updated successfully.

然后在hdfs上/user目录下创建用户目录

[root@cm1 ~]# sudo -u hdfs hdfs dfs -mkdir /user/hadoop-cw
    [root@cm1 ~]# hdfs dfs -ls /user
    Found 7 items
    drwxr-xr-x   - hdfs   supergroup          0 2019-11-17 18:16 /user/hadoop-cw
    drwx------   - hdfs   supergroup          0 2019-11-15 21:36 /user/hdfs
    drwxrwxrwx   - mapred hadoop              0 2019-11-15 20:10 /user/history
    drwxrwxr-t   - hive   hive                0 2019-11-15 20:10 /user/hive
    drwxrwxr-x   - hue    hue                 0 2019-11-15 20:11 /user/hue
    drwxr-x--x   - spark  spark               0 2019-11-15 20:09 /user/spark
    drwxr-xr-x   - hdfs   supergroup          0 2019-11-15 20:09 /user/yarn
    [root@cm1 ~]# sudo -u hdfs hdfs dfs -chown hadoop-cw:hdfs /user/hadoop-cw
    [root@cm1 ~]# hdfs dfs -ls /user
    Found 7 items
    drwxr-xr-x   - hadoop-cw hdfs                0 2019-11-17 18:16 /user/hadoop-cw
    drwx------   - hdfs      supergroup          0 2019-11-15 21:36 /user/hdfs
    drwxrwxrwx   - mapred    hadoop              0 2019-11-15 20:10 /user/history
    drwxrwxr-t   - hive      hive                0 2019-11-15 20:10 /user/hive
    drwxrwxr-x   - hue       hue                 0 2019-11-15 20:11 /user/hue
    drwxr-x--x   - spark     spark               0 2019-11-15 20:09 /user/spark
    drwxr-xr-x   - hdfs      supergroup          0 2019-11-15 20:09 /user/yarn

上传文件测试

[root@cm1 ~]# hdfs dfs -put 1.txt /user/hadoop-cw
    [root@cm1 ~]# hdfs dfs -ls /user/hadoop-cw
    Found 1 items
    -rw-r--r--   3 hdfs hdfs         12 2019-11-17 18:23 /user/hadoop-cw/1.txt