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  1 #!/bin/bash

 #@author：feiyuanxing 【既然笨到家，就要努力到家】

 #@date：2017-01-05

 #@E-Mail：feiyuanxing@gmail.com

 #@TARGET:一键安装hadoop 2.7.6 centos 64位

 #@CopyRight:本脚本遵守 未来星开源协议（http://feiyuanxing.com/kaiyuanxieyi/kaiyuanxieyi.html）

 #讲解：

 #0.前提条件：

 #  0.1 已经配置好JAVA环境变量

 #  0.2 已经配置免密登录环境

 #1.请使用root用户执行，软件默认安装在work用户，通常会在linux的/home 挂载一个大型磁盘

 #2.软件安装在/home/work/local/hadoop/hadoop  有人问为什么这么深

 #   2.1 work目录下local包含所有软件 hadoop安装大数据生态圈其他软件

 #   2.2 hadoop的数据安装在 /home/work/data ，此目录由于数量较大，可以单独挂载一个磁盘

 #

 ####################################################################################

 # 个性化设置

 # Hadoop 生态目录

 INSTALL_HOME=/home/work/local/hadoop

 #data 目录

 DATA_HOME=/home/work/data

 # Hadoop目录

 ROOT_HOME=${INSTALL_HOME}/hadoop_tmp

 #name 通常为主机（本机），缺省配置为master

 NAMENODE=master

 #name 通常为第一台从机，缺省配置为slave01

 SECONDARYNAMENODE=slave01

 #hadoop 版本

 HADOOP_VERSION=hadoop-2.7.6.tar.gz

 ####################################################################################

 # Hadoop 生态数据路径

 hadoop_logs=${DATA_HOME}/hadoop_logs

 hadoop_tmp=${DATA_HOME}/hadoop_tmp

 hadoop_data=${DATA_HOME}/hadoop_data

 hadoop_name=${DATA_HOME}/hadoop_name

 #当前脚本的位置

 SCRIPT_HOME=$(cd `dirname $0`; pwd)

 mkdir -p ${INSTALL_HOME} && cd ${INSTALL_HOME}

 mkdir -p ${ROOT_HOME} && mkdir -p ${hadoop_logs} && mkdir -p ${hadoop_tmp}&& mkdir -p ${hadoop_data}&& mkdir -p ${hadoop_name}

 #chown -R work:work /home/work/data/hadoop

 #集群机器信息

 INSTALL_IP_ARRAY=()

 INSTALL_HOSTNAME_ARRAY=()

 # 需要判断用户是否存在

 function add_work_user(){

     adduer work -d /home/work

     passwd work

 }

 #需要判断jdk是否存在

 function install_jdk(){

     # 有jdk

     echo $JAVA_HOME

 }

 #下载hadoop

 function download_hodoop(){

     echo "(2-1/6)正在获取安装包：${INSTALL_HOME}/hadoop-2.7.6.tar.gz"

     if [ ! -f ${INSTALL_HOME}/hadoop-2.7.6.tar.gz ] ;then

         echo "开始下载"

         wget https://mirrors.tuna.tsinghua.edu.cn/apache/hadoop/common/hadoop-2.7.6/${HADOOP_VERSION}

     fi

     echo "(2-2/6)获取安装包完成：${INSTALL_HOME}/hadoop-2.7.6.tar.gz"

 }

 function configuration_ssh(){

     #设置本机免密码登录

     (echo -e "\n"

     sleep 1

     echo -e "\n"

     sleep 1

     echo -e "\n")|ssh-keygen -t rsa

     cat  ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

     chmod 700  ~/.ssh

     chmod 600  ~/.ssh/authorized_keys

 }

 function readFileToArra(){

     echo "(1/6)正在读取配置文件：${SCRIPT_HOME}/hostip_hadoop.txt"

     if [ ! -f "${SCRIPT_HOME}"/hostip_hadoop.txt ];then

         echo "请在本目录下的【hostip_hadoop.txt】文件中添加Hadoop集群机器信息"

         echo "#USENAME@IP:PORT,PASSWD（第一个必须配置为主，通常为本机）

 root@191.168.1.1:22,123456

 root@191.168.1.2:22,123456" > ${SCRIPT_HOME}/hostip_hadoop.txt

         exit;

     else

         INSTALL_IP_ARRAY=($(cat "${SCRIPT_HOME}"/hostip_hadoop.txt| grep -v "^#"))

         INSTALL_HOSTNAME_ARRAY=($(cat "${SCRIPT_HOME}"/hostip_hadoop.txt| grep -v "^#"|awk -F '@' '{print $2}'|awk -F ':' '{print $1}'))

     fi

     #for(( i=0 ; i<${#INSTALL_IP_ARRAY[@]} ; i++)) do

     #    echo "打印数组：${INSTALL_IP_ARRAY[i]}"

     #done;

 }

 #readFileToArra

 function configure_hadoop(){

     echo "(3-1/6)正在解压安装包："

     #最终生成的文件名为install_hadoop.bin而我们的all.tar.gz被>>到该文件后面

     #tail -c $size  install_hadoop.bin >all.tar.gz

     rm -rf hadoop hadoop_tmp

     tar -zxf ${HADOOP_VERSION}

     #pwd

     mv hadoop-2.7.6 hadoop_tmp && cd hadoop_tmp

     echo "(3-2/6)正在配置Hadoop环境变量："

     #设置环境变量

     hadoop_home_before=`cat /etc/profile| grep "HADOOP_HOME"`

     if [ -z "${hadoop_home_before}" ] ;then

         echo "hadoop 环境变量已存在..."

         sed -i '/HADOOP_HOME/d' /etc/profile

         echo "export HADOOP_HOME=${INSTALL_HOME}" >> /etc/profile

         echo 'export PATH=$PATH:${HADOOP_HOME}/bin:${HADOOP_HOME}/sbin' >> /etc/profile

         #使得环境变量生效

         source /etc/profile

         sleep 1;

         source /etc/profile

     fi

     echo "(4/6)正在配置Hadoop基本配置："

     #通过强大的sed命令来修改hadoop的配置文件

     jdk_home=`echo $JAVA_HOME`

     if [ -z ${jdk_home} ] ;then

         #安装JDK

         echo "程序已退出，请先配置JDK"

         exit

     fi

     #echo "开始配置hadoop"

     # 1.配置hadoop-env.sh

     sed -i "s!\${JAVA_HOME}!$(echo ${jdk_home})!g" ${ROOT_HOME}/etc/hadoop/hadoop-env.sh

     # 2.配置core-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>fs.defaultFS\<\/name\>\n\\t\\t\<value\>hdfs://${NAMENODE}:9000\<\/value\>\n\\t\<\/property\>\n\\t\<property\>\n\\t\\t\<name\>hadoop.tmp.dir\<\/name\>\n\\t\\t\<value\>file:$(echo ${hadoop_tmp})\<\/value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/core-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>io.file.buffer.size\</name\>\n\\t\\t\<value\>131072\</value\>\n\\t\</property\>"   ${ROOT_HOME}/etc/hadoop/core-site.xml

     # 3.配置hdfs-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>dfs.webhdfs.enabled\</name\>\n\\t\\t\<value\>true\</value\>\n\\t\</property\>"   ${ROOT_HOME}/etc/hadoop/hdfs-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>dfs.replication\</name\>\n\\t\\t\<value\>2\</value\>\n\\t\</property\>"   ${ROOT_HOME}/etc/hadoop/hdfs-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>dfs.datanode.data.dir\</name\>\n\\t\\t\<value\>file:${hadoop_name}\</value\>\n\\t\</property\>"   ${ROOT_HOME}/etc/hadoop/hdfs-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>dfs.namenode.name.dir\</name\>\n\\t\\t\<value\>file:${hadoop_data}\</value\>\n\\t\</property\>"   ${ROOT_HOME}/etc/hadoop/hdfs-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>dfs.namenode.secondary.http-address\</name\>\n\\t\\t\<value\>master:9001\</value\>\n\\t\</property\>"   ${ROOT_HOME}/etc/hadoop/hdfs-site.xml

     # 4.配置mapred-site.xml

     cp ${ROOT_HOME}/etc/hadoop/mapred-site.xml.template  ${ROOT_HOME}/etc/hadoop/mapred-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>mapreduce.jobhistory.webapp.address\</name\>\n\\t\\t\<value\>master:19888\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/mapred-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>mapreduce.jobhistory.address\</name\>\n\\t\\t\<value\>master:10020\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/mapred-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>mapreduce.framework.name\</name\>\n\\t\\t\<value\>yarn\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/mapred-site.xml

     # 5.配置yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.resourcemanager.webapp.address\</name\>\n\\t\\t\<value\>master:8088\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.resourcemanager.admin.address\</name\>\n\\t\\t\<value\>master:8033\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.resourcemanager.resource-tracker.address\</name\>\n\\t\\t\<value\>master:8031\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.resourcemanager.scheduler.address\</name\>\n\\t\\t\<value\>master:8030\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.resourcemanager.address\</name\>\n\\t\\t\<value\>master:8032\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.nodemanager.aux-services.mapreduce.shuffle.class\</name\>\n\\t\\t\<value\>org.apache.hadoop.mapred.ShuffleHandler\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     sed -i "/<configuration>/a\\\t\<property\>\n\\t\\t\<name\>yarn.nodemanager.aux-services\</name\>\n\\t\\t\<value\>mapreduce_shuffle\</value\>\n\\t\</property\>"  ${ROOT_HOME}/etc/hadoop/yarn-site.xml

     # 6.配置slaves文件

     echo "" > ${ROOT_HOME}/etc/hadoop/slaves

     for(( i=0 ; i<${#INSTALL_HOSTNAME_ARRAY[@]} ; i++)) do

         echo "${INSTALL_HOSTNAME_ARRAY[i]}" >> ${ROOT_HOME}/etc/hadoop/slaves

     done;

     echo "(5/6)正在发送hadoop到其他机器"

     for line in ${INSTALL_IP_ARRAY[@]}

     do

         user=`echo ${line}| awk -F "@" '{print $1}'`

         ip=`echo ${line}| cut -d "@" -f 2| cut -d ":" -f 1`

         port=`echo ${line}| cut -d "@" -f 2| cut -d ":" -f 2|cut -d "," -f 1`

         echo ${user} - ${ip} - ${port} -  ${passwd}

         ssh -p ${port} -o StrictHostKeyChecking=no "${user}@${ip}" "rm -rf ${DATA_HOME}/hadoop_*;rm -rf ${INSTALL_HOME}/hadoop;mkdir -p ${INSTALL_HOME}/hadoop;mkdir -p ${hadoop_logs} && mkdir -p ${hadoop_tmp}&& mkdir -p ${hadoop_data}&& mkdir -p ${hadoop_name}"

         #echo "scp -P ${port} -o StrictHostKeyChecking=no -rpq ${ROOT_HOME}  \"${user}\"@\"${ip}\":${INSTALL_HOME}"

         scp -P ${port} -o StrictHostKeyChecking=no -rpq ${ROOT_HOME}/*  "${user}"@"${ip}":${INSTALL_HOME}/hadoop

         ssh -p ${port} -o StrictHostKeyChecking=no "${user}@${ip}" "chown -R work:work ${INSTALL_HOME}"

     done

     echo "(6/6)Hadoop配置成功"

 }

 #配置Hadoop启动服务

 function start_hadoop(){

     #格式化hadoop

     hdfs  namenode -format

     echo "格式化完成..开始运行"

     #先启动HDFS

     start-dfs.sh

     #再启动YARN

     start-yarn.sh

     #检查是否启动成功

     jps

 }

 #动态读取配置文件

 readFileToArra

 #add_work_user

 download_hodoop;

 #configuration_ssh

 configure_hadoop

 #start_hadoop