hadoop fs -mkdir /wordinput hadoop fs -put word.txt /wordinput hadoop jar hadoop-mapredue_examples.jar wordcount /wordinput /wordout
755 .ssh为什么没能权限 chmod 700 .ssh 增加root组权限 usrmod -g root hadoop
安装hadoop
1.安装jdk #cd /usr/local #tar zxvf jdk_1.8.0.191.tar.gz #vim /etc/profile export JAVA_HOME=/usr/local/jdk1.8.0_191 export PATH=$PATH:$JAVA_HOME/bin #source /etc/profile 2.安装hadoop #cd /usr/local #tar zxvf hadoop2.9.0.tar.gz #ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa #cd ~/.ssh #cat id_dsa.pub >> authorized_keys #vi /etc/hostname master #vi /etc/hosts 192.168.75.128 master #cd /usr/local/hadoop-2.9.1 #vi hadoop-env.sh JAVA_HOME=/usr/local/jdk1.8.0_191 #vi core-site.xml <property> <name>fs.defaultFS</name> <value>hdfs://master:9000</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/usr/local/hadoop/tmp</value> </property> </property> #vi yarn-site.xml <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> #vi hdfs-site.xml <property> <name>dfs.namenode.name.dir</name> <value>file:/usr/local/hadoop/hdfs/name</value> </property> <property> <name>dfs.datanode.data.dir</name> <value>file:/usr/local/hadoop/hdfs/data</value> </property> <property> <name>dfs.replication</name> <value>1</value> </property> #cp mapred-site.xml.template mapred-site.xml #vi mapred-site.xml <property> <name>mapreduce.frmamework.name</name> <value>yarn</value> </property> #cd /usr/local/hadoop/bin ./hdfs namenode -format #cd /usr/local/hadoop/sbin ./stast-all.sh #firewall-cmd --state #systemctl stop firewalld.service #浏览器 http://192.168.75.128:8088 http://192.168.75.128:50070 hadoop-daemon.sh start namenode hadoop-daemon.sh stop namenode start-alll.sh