单机模式@H_301_1@
下载hadoop-2.7.3.tar.gz 并解压缩@H_301_1@
安装java环境@H_301_1@
sudo apt install openjdk-8-jdk
设置环境变量@H_301_1@
vim /etc/profile export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$CLASSPATH export HADOOP_HOME=/usr/local/hadoop export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HADOOP_HOME/bin
source /etc/profile
/usr/local/hadoop/etc/hadoop/core-site.xml@H_301_1@
修改etc/hadoop/hdfs-site.xml@H_301_1@
#无密码登录设置 ssh-keygen -t dsa ssh-copy-id -i ~/.ssh/id_rsa.pub root@172.16.242.100
#格式化hdfs /usr/local/hadoop/bin/hdfs namenode -format
#启动dfs测试 /usr/local/hadoop/sbin/start-dfs.sh
hdfs dfs -mkdir /input hdfs dfs -put etc/hadoop /input hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.2.jar grep /input /output 'dfs[a-z.]+' hdfs dfs -cat output/*