hadoop在linux上的安装

hadoop在linux上的安装 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=

hadoop在linux上的安装

 

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

  fs.default.name

  hdfs://localhost:9000

 

修改conf/hdfs-site.xml

  dfs.replication

  1

 

修改conf/mapred-site.xml

  mapred.job.tracker

  localhost:9001

 

启动

./bin/hadoop namenode -format

./bin/start-all.sh 

 

测试

localhost:50030

localhost:50070