centos7搭建spark单机环境

                                      安装spark（单机环境）

cd /soft
tar -zxvf spark-2.2.1-bin-hadoop2.7.tgz  -C /usr/local/
/usr/local/spark-2.2.1-bin-hadoop2.7

环境变量：
echo "export SPARK_HOME=/usr/local/spark-2.2.1-bin-hadoop2.7" >> /etc/profile
echo -e 'export PATH=$PATH:$SPARK_HOME/bin'>> /etc/profile
source /etc/profile  


对/usr/local/spark-2.2.1-bin-hadoop2.7/conf目录下的文件进行配置：

cd /usr/local/spark-2.2.1-bin-hadoop2.7/conf
cp spark-env.sh.template spark-env.sh
cp slaves.template  slaves


编辑spark-env.sh：vim /usr/local/spark-2.2.1-bin-hadoop2.7/conf/spark-env.sh
添加:
export SCALA_HOME=/usr/local/scala-2.12.4 
export JAVA_HOME=/usr/java/jdk1.8.0
export SPARK_HOME=/usr/local/spark-2.2.1-bin-hadoop2.7
export SPARK_MASTER_IP=node1  
export SPARK_EXECUTOR_MEMORY=250m
export SPARK_WORKER_MEMORY=250m

编辑slaves：vim /usr/local/spark-2.2.1-bin-hadoop2.7/conf/slaves
里面的内容设置为：
localhost


进入到主目录，也就是执行下面的命令：
cd /usr/local/spark-2.2.1-bin-hadoop2.7

执行命令运行计算圆周率的Demo程序：
/usr/local/spark-2.2.1-bin-hadoop2.7/./bin/run-example   SparkPi   10
 
   
执行命令，启动脚本：
/usr/local/spark-2.2.1-bin-hadoop2.7/./bin/spark-shell