hadoop linux安装

配置免密码登录

ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa

cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

 

test：ssh localhost

 

hadoop环境变量

export JAVA_HOME=/usr/local/jdk
export HADOOP_INSTALL=/usr/local/hadoop
export PATH=$PATH:$HADOOP_INSTALL/bin

 

修改hadoop配置

修改conf/core-site.xml

<property>
  <name>fs.default.name</name>
  <value>hdfs://localhost:9000</value>
</property>

 

修改conf/hdfs-site.xml

<property>
  <name>dfs.replication</name>
  <value>1</value>
</property>

 

修改conf/mapred-site.xml

<property>
  <name>mapred.job.tracker</name>
  <value>localhost:9001</value>
</property>

 

启动

./bin/hadoop namenode -format

./bin/start-all.sh 

 

测试

localhost:50030

localhost:50070