一、前提
1、安装hadoop集群
2、安装scala
3、假设三个节点：master、slave1、slave2
二、Spark集群搭建
1、建立文件夹存放spark压缩包
2、在本文件夹下解压
3、将解压得到的文件夹名重命名
4、进入spark-2.20\conf文件夹，修改spark-env.sh.template为spark-env.sh
5、在spark-env.sh中添加以下内容：
export JAVA_HOME=/opt/softWare/java/jdk1.8.0_141
export SCALA_HOME=/opt/software/scala/scala-2.12.4
export HADOOP_HOME=/opt/software/hadoop/hadoop-2.7.3
export HADOOP_CONF_DIR=/opt/softWare/hadoop/hadoop-2.7.3/etc/hadoop
export SPARK_MASTER_IP=192.168.XXX.XX
#export SPARK_WORKER_INSTANCES=1 //每个Slave中启动几个Worker实例
export SPARK_WORKER_MEMORY=1g
#export SPARK_DIST_CLASSPATH=$(/home/hadoop/hadoop-2.7.2/bin/hadoop classpath)
注意：前面有#的可以不用添加
6、进入spark-2.20\conf文件夹，修改slaves.template为slave，添加如下内容：
master
slave1
slave2
7、赋权限
chmod 777 /opt/software/spark/spark-2.20/bin/*
chmod 777 /opt/software/spark/spark-2.20/sbin/*
8、scp到其他两台机器。
scp -r /opt/software/spark slave1:/opt/software/spark
scp -r /opt/software/spark slave2:/opt/software/spark
9、在每台主机配置/etc/profile中配置环境变量
#spark
export SPARK_HOME=/opt/software/spark/spark-2.20
PATH=$SPARK_HOME/bin:$PATH
然后：source /etc/profile
10、启动spark
cd /opt/software/spark/spark-2.20/sbin/
./start-all.sh
11、查看jps
12、查看spark Web
ip：8080
