hadoop hdfs-site.xml 相关配置说明

hdfs-site.xml

(base) [root@up01 hadoop]# cat hdfs-site.xml 
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

<configuration>
<!-- 指定SecondaryNameNode的主机和端口 -->
<property>
		<name>dfs.namenode.secondary.http-address</name>
		<value>up01:50090</value>
</property>
<!-- 指定namenode的页面访问地址和端口 -->
<property>
	<name>dfs.namenode.http-address</name>
	<value>up01:50070</value>
</property>
<!-- 指定namenode元数据的存放位置 -->
<property>
	<name>dfs.namenode.name.dir</name>
	<value>file:///export/server/hadoop-2.7.5/hadoopDatas/namenodeDatas</value>
</property>
<!--  定义datanode数据存储的节点位置 -->
<property>
	<name>dfs.datanode.data.dir</name>
	<value>file:///export/server/hadoop-2.7.5/hadoopDatas/datanodeDatas</value>
</property>	
<!-- 定义namenode的edits文件存放路径 -->
<property>
	<name>dfs.namenode.edits.dir</name>
	<value>file:///export/server/hadoop-2.7.5/hadoopDatas/nn/edits</value>
</property>

<!-- 配置检查点目录 -->
<property>
	<name>dfs.namenode.checkpoint.dir</name>
	<value>file:///export/server/hadoop-2.7.5/hadoopDatas/snn/name</value>
</property>

<property>
	<name>dfs.namenode.checkpoint.edits.dir</name>
	<value>file:///export/server/hadoop-2.7.5/hadoopDatas/dfs/snn/edits</value>
</property>
<!-- 文件切片的副本个数-->
<property>
	<name>dfs.replication</name>
	<value>1</value>
</property>

<!-- 设置HDFS的文件权限-->
<property>
	<name>dfs.permissions</name>
	<value>false</value>
</property>
<!-- 设置一个文件切片的大小：128M-->
<property>
	<name>dfs.blocksize</name>
	<value>134217728</value>
</property>
<!-- 指定DataNode的节点配置文件 -->
<property>
		 <name> dfs.hosts </name>
		 <value>/export/server/hadoop-2.7.5/etc/hadoop/slaves</value>
</property>
<property>
    <name>dfs.webhdfs.enabled</name>
    <value>true</value>
</property>

</configuration>

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