Big data - install Hadoop, JDK and environment variables in xsell6

One .  install JDK And environment variables

1. Get into Xshell6, Connecting virtual machines , Change ordinary users to root user  

2.cd Go to the root , And then again cd To usr/local In the folder

3. establish app Folder  

4. Get into app Folder , To install a rz Upload file component yum -y install lrzsz  and    install vim Editor yum -y install vim

5.（cd To usr/local In the folder ）, Upload JDK（ It's up to you to find the compressed package ）

6. decompression JDK  tar -zxvf jdk-8u181-linux-x64.tar.gz

 7. Change the file name to jdk  mv jdk-1.8.0 jdk   And delete jdk-8u181-linux-x64.tar.gz The package

8.  add to jdk To environment variable ( Add... At the end )  vim /etc/profile  （ Don't change environment variables , Otherwise, all commands will be invalid ）（I Key to insert text ;esc Exit the editor ;q sign out ;q！ Forced exit ;wq Exit after saving ）

#JDK

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

 9. Call resources  source /etc/profile

Check if the configuration is successful  java -version

  Two .  install Hadoop And environment variables

1.（cd To usr/local In the folder ）, Upload Hadoop （ It's up to you to find the compressed package ）

 2. decompression JDK  tar -zxvf hadoop-2.7.6.tar.gz

 3. Change the file name to jdk  mv hadoop-2.7.6.tar.gz  hadoop And delete hadoop-2.7.6.tar.gz The package

4.  add to jdk To environment variable ( Add... At the end )  vim /etc/profile  （ Don't change environment variables , Otherwise, all commands will be invalid ）（I Key to insert text ;esc Exit the editor ;q sign out ;q！ Forced exit ;wq Exit after saving ）

#HADOOP

export HADOOP_HOME=/usr/local/hadoop
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

 5. Call resources  source /etc/profile

Check if the configuration is successful  hadoop version

Configuration complete ！