hadoop 3.0.0 alpha1 伪分布式搭建

yum install java-1.8.0-openjdk -y

wget http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-3.0.0-alpha1/hadoop-3.0.0-alpha1.tar.gz[/code]三、配置hadoop 1、解压hadoop
2、编辑 etc/hadoop/hadoop-env.sh
export JAVA_HOME='/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.102-1.b14.el7_2.x86_64/jre'
3、编辑etc/hadoop/core-site.xml:

<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://192.168.56.101:9000</value>
</property>
</configuration>
4、编辑etc/hadoop/hdfs-site.xml:

<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>
5、配置无密码登录
ssh-keygen
ssh-copy-id 192.168.56.101
6、格式化文件系统
bin/hdfs namenode -format
7、启动 NameNode 和 DataNode

sbin/start-dfs.sh
8、通过web浏览 NameNode
http://192.168.56.101:9870/