Using ACLs to manage HDFs permissions in Hadoop

In Hadoop, ACLs are used to manage HDFs permissions, and ACL permissions are added to the rights control in hadoop2.4, like Linux ACL permissions

1, modify the HDFS permission configuration

<property>
	<name>dfs.permissions</name>
	<value>false</value>
</ property>
<property>
	<name>dfs.namenode.acls.enabled</name>
	<value>true </value>
</property>

2. Permission Configuration

Assigning permissions to the owning master and group

Sudo-u HDFs HDFs dfs-chmod-r 771/user/hive/warehouse sudo-u hdfs hdfs dfs-chown-r hive:hive/user/hive/warehous
E

Permissions to assign ACLs

Sudo-u HDFs HDFs dfs-setfacl-r-M group:bdc:rwx/hive/default sudo-u HDFs hdfs
dfs-setfacl-r-M group:bdc:rwx/h Ive/warehouse
sudo-u HDFs hdfs dfs-setfacl-r-M User:kwu:rwx/hive/warehouse

3, user and group settings

Important:ensure that all users and groups resolve on the Namenode for ACLs to work as expected.

This is the official website, that is, the node in the Namenode to configure the relationship between users and groups

View the group to which the user belongs

Groups Kwu