Hadoop记录-部署hadoop环境shell实现

#!/bin/bash

menu()
{
echo "---欢迎使用hadoop部署管理程序---"
echo "# 1.初始化Linux环境"
echo "# 2.配置jdk"
echo "# 3.配置ntpd时钟服务"
echo "# 4.配置zookeeper环境"
echo "# 5.配置hadoop环境"
echo "# 6.退出程序"
echo "-----------------------------"
}

choice()
{
  read -p "Please choice a menu[1‐9]:" select
}

install_linux(){
    mkdir /usr/app
    dir=/usr/app/software
    if [ ! -d ${dir} ]
    then
       mkdir /usr/app/software -p
    fi
    #设置主机名
    hostnamectl set-hostname cent
    sed -i 's/HOSTNAME=localhost.localdomain/HOSTNAME=cent/g' /etc/sysconfig/network
    echo "192.168.66.128 cent" >> /etc/hosts
    #关闭selinux
    sed -i  '/^SELINUX/s/=.*/=disabled/' /etc/selinux/config
    setenforce 0
    #关闭防火墙
    service iptables stop
    chkconfig iptables off
    #修改Linux系统的最大打开文件数量 
    cat >> /etc/security/limits.conf <<EOF
    * soft nofile  65536
    * hard nofile  65536
EOF
}

install_jdk(){
    find /usr/app/software -type -f -name 'jdk*.tar.gz'
    if [ $? -eq 0 ]
    then
       tar xvf /usr/app/software/jdk*.tar.gz -C /usr/app
    mv jdk* jdk
    cat >> /etc/profile <<EOF
    export JAVA_HOME=/usr/app/jdk
    export PATH=$JAVA_HOME/bin:$PATH
    export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib
EOF
    source /etc/profile
   else
      echo "请先上传jdk tar包"
    fi
}

install_ntpd(){
    yum -y install ntp
    service ntpd restart
    #ntpdate -u ntp1.aliyun.com ---配置阿里云时钟
    #如果是离线网络，则需要配置一台ntpd时钟，其他节点的同步这台时钟
}

install_zookeeper(){
   ls -ll /usr/app/software/zookeeper*.tar.gz
   if [ $? -eq 0 ]
   then
     tar xvf /usr/app/software/zookeeper*.tar.gz -C /usr/app 
     mv zookeeper* zookeeper
     mv /usr/app/zookeeper/conf/zoo.cfg*  /usr/app/zookeeper/conf/zoo.cfg
     echo>/usr/app/zookeeper/conf/zoo.cfg
     mkdir /usr/app/zookeeper/data
     cat >> /usr/app/zookeeper/conf/zoo.cfg << EOF
     tickTime=2000
     initLimit=10
     syncLimit=5
     dataDir=/usr/app/zookeeper/data
     clientPort=2181
     maxClientCnxns=60
     server.1= cent:2888:3888
EOF
   else
      echo "请先上传zookeeper tar包"
   fi
}

install_hadoop(){
   echo "配置太多（hadoop-env.sh/core-site.xml/hdfs-site.xml/mapred-site.xml/yarn-site.xml/yarn-env.sh），此功能忽略"
}

while :
do
  menu
  choice
case $select in
1)
    install_linux;;
2)
    install_jdk;;
3)
    install_ntpd;;
4)
    install_zookeeper;;
5)
    install_hadoop;;
6)
    exit;;
*)
echo  "您输入的数字没有对应的菜单"
esac
done