CentOS Configuration Hadoop Environment variables

Centos7 && hadoop-2.7.0.tar.gz

Hadoop is based on a Java environment, so you need to configure the JDK.
1. Configure the JDK:
http://blog.csdn.net/fantasydreams/article/details/46486275
2. Download the hadoop-2.7.0.tar.gz package and upload it to the CentOS os via SSH

Latest Hadoop:
http://hadoop.apache.org/#Download +hadoop
3, Decompression hadoop-2.7.0.tar.gz

tar -vxzf hadoop-2.7.0.tar.gz

4. Change hadoop-2.7.0 folder permissions

chmod777 hadoop-2.7.0

5. Add the Hadoop directory to the/etc/profile folder and enter the Hadoop directory to run the pwd command to get the Hadoop directory path

Add the following two sentences into the/etc/profile file

export HADOOP_HOME=/root/hadoop-2.7.0export PATH=$HADOOP_HOME/bin:$PATH

6. Execute the command to . /etc/profile make the Hadoop environment variable effective

7, the implementation of the hadoop version test environment has been successfully built

If this is the case, the Hadoop environment variable is built successfully!

CentOS Configuration Hadoop Environment variables