安装单机版的hadoop脚本

1.上一个写的是高可用的搭建，可能对刚开始学的伙伴来说有一点难度，所以我又写了一个单例模式的Hadoop的脚本，欢迎伙伴给予建议。

Linux安装前面也有，就直接跳过了。

2.我把jdk，zookeeper和Hadoop的包放在了install文件夹里

 3.创建一个文件夹，放脚本代码

4 .脚本里的内容

#!/bin/bash

jdk=false
zk=true
hadoop=true

hostname=`hostname`
echo "current host name is $hostname"
whoami=`whoami`
echo "current user is $whoami"

installdir=/opt/soft
if [ ! -d "$installdir" ]
then mkdir $installdir
fi

if [ "$jdk" = true ]
then echo "  ---------安装java JDK------------"
     tar -zxf /opt/install/jdk-8u111-linux-x64.tar.gz -C /opt/soft/
     mv /opt/soft/jdk1.8.0_111 /opt/soft/jdk180
     echo "#jdk" >> /etc/profile
     echo 'export JAVA_HOME=/opt/soft/jdk180' >> /etc/profile
     echo 'export CLASSPATH=.:$JAVA_HOMEb/lib/dt.jar:$JAVA_HOME/lib/tools.jar' >> /etc/profile
     echo 'export PATH=$PATH:$JAVA_HOME/bin' >> /etc/profile
fi

if [ "$zk" = true ];then
    echo  "----------- 安装zookeeper --------"
    tar -zxvf zookeeper-3.4.5-cdh5.14.2.tar.gz -C /opt/soft
    mv /opt/soft/zookeeper-3.4.5-cdh5.14.2 /opt/soft/zookeeper345
    cp /opt/soft/zookeeper345/conf/zoo_sample.cfg  /opt/soft/zookeeper345/conf/zoo.cfg
    sed i '/^dataDir=/opt/soft/zookeeper345/datatmp' /opt/soft/zookeeper345/conf/zoo.cfg
    echo "server.1=$hostname:2888:3888" >> /opt/soft/zookeeper345/conf/zoo.cfg
    mkdir -p /opt/soft/zookeeper345/datatmp/
    echo "1"> /opt/soft/zookeeper345/datatmp/myid
   
    echo 'export ZOOKEEPER_HOME=/opt/soft/zookeeper345' >> /etc/profile
    echo 'export PATH=$PATH:$ZOOKEEPER_HOME/bin' >> /etc/profile
fi


if [ "$hadoop" = true ];then
  echo '------------ 安装hadoop  ------------'
  tar -zxf /opt/install/hadoop-2.6.0-cdh5.14.2.tar.gz -C /opt/soft/
  mv /opt/soft/hadoop-2.6.0-cdh5.14.2 /opt/soft/hadoop260

  echo '------------ 修改配置hadoop-env.sh ------------'
  sed -i "/^export JAVA_HOME=/cexport JAVA_HOME=$JAVA_HOME/" /opt/soft/hadoop260/etc/hadoop/hadoop-env.sh

  echo '------------ 修改配置mapred-env.sh ------------'
  sed -i "/^# export JAVA_HOME=/cexport JAVA_HOME=$JAVA_HOME/" /opt/soft/hadoop260/etc/hadoop/mapred-env.sh

  echo '------------ 修改配置yarn-env.sh ------------'
  sed -i "/^# export JAVA_HOME=/cexport JAVA_HOME=$JAVA_HOME/" /opt/soft/hadoop260/etc/hadoop/yarn-env.sh
  
  echo '------------ 修改配置core.site.xml ------------' 
  core_path="/opt/soft/hadoop260/etc/hadoop/core-site.xml"
  sed -i '19ahadoop.proxyuser.bigdata.groups*' $core_path
  sed -i '19ahadoop.proxyuser.bigdata.hosts*' $core_path
  sed -i '19ahadoop.tmp.dir/opt/soft/hadoop260/hadooptmp/' $core_path
  sed -i "19afs.defaultFShdfs://$hostname:9000" $core_path

  echo '------------ 修改配置 hdfs-site.xml ------------'
  hdfs_path="/opt/soft/hadoop260/etc/hadoop/hdfs-site.xml"
  sed -i '19adfs.replication1' $hdfs_path
  sed -i "19adfs.namenode.secondary.http-address$hostname:50090" $hdfs_path
  
  echo '------------ 修改配置 mapred-site.xml ------------'
  mapred_path="/opt/soft/hadoop260/etc/hadoop/mapred-site.xml"
  cp /opt/soft/hadoop260/etc/hadoop/mapred-site.xml.template /opt/soft/hadoop260/etc/hadoop/mapred-site.xml
  sed -i "19amapreduce.jobhistory.webapp.address$hostname:19888" $mapred_path
  sed -i "19amapreduce.jobhistory.address$hostname:10020" $mapred_path
  sed -i '19amapreduce.framework.nameyarn' $mapred_path

  echo '------------ 修改配置 yarn-site.xml ------------'
  yarn_path="/opt/soft/hadoop260/etc/hadoop/yarn-site.xml"
  sed -i "15ayarn.log-aggregation.retain-seconds86400" $yarn_path
  sed -i "15ayarn.log-aggregation-enabletrue" $yarn_path
  sed -i "15ayarn.resourcemanager.hostname$hostname" $yarn_path
  sed -i "15ayarn.nodemanager.aux-servicesmapreduce_shuffle" $yarn_path
  sed -i "15ayarn.nodemanager.aux-services.mapreduce.shuffle.classorg.apache.hadoop.mapred.ShuffleHandler" $yarn_path

 echo '------------ 修改配置 slaves.xml ------------'
 sed -i "s/localhost/$hostname/g" /opt/soft/hadoop260/etc/hadoop/slaves

 echo "#hadoop" >> /etc/profile
 echo 'export HADOOP_HOME=/opt/soft/hadoop260' >> /etc/profile
 echo 'export HADOOP_MAPRED_HOME=$HADOOP_HOME' >> /etc/profile
 echo 'export HADOOP_COMMON_HOME=$HADOOP_HOME' >> /etc/profile
 echo 'export HADOOP_HDFS_HOME=$HADOOP_HOME' >> /etc/profile
 echo 'export YARN_HOME=$HADOOP_HOME' >> /etc/profile
 echo 'export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native' >> /etc/profile
 echo 'export HADOOP_OPTS="-Djava.library.path=$HADOOP_HOME/lib"' >> /etc/profile
 echo 'export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin' >> /etc/profile
  
 /opt/soft/hadoop260/bin/hadoop namenode -format
fi

 总结：这样安装单机版就方便了，chmod给与脚本权力，直接运行。高可用因为写的脚本代码特多，就不写脚本了，可以看我上一个文章高可用搭建。希望可以给伙伴带来一点帮助，要是有更简单的脚本可以交流下。