Hadoop集群新增节点

接着后上篇配置的Hadoop集群打开，我们现在将xx01也增加到datanode当中

需要修改几个配置：

conf/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>
<property>
<name>dfs.name.dir</name>
<value>/usr/local/hadoop/name</value>
<final>true</final>
</property>
<property>
<name>dfs.data.dir</name>
<value>/usr/local/hadoop/data</value>
<final>true</final>     
</property>
<!-- 默认Block副本数，设置为副节点个数，这里为2个 -->
<property>
<name>dfs.replication</name>
<value>3</value>
<!-- 这里为3个 -->
<final>true</final>
</property>
</configuration>

slaves

xx01
xx02
xx03

复制文件至从机并重启服务

scp -r /usr/local/hadoop root@xx02:/usr/local/ 
scp -r /usr/local/hadoop root@xx03:/usr/local/

启动Hadoop集群

启动在/usr/local/Hadoop/sbin/文件夹下的 start-all.sh文件
命令：

在页面查看

完成