centos初始化 ntp 杂七杂八脚本

Love The Way You Lie 2022-09-04 02:57 26阅读 0赞

## 虽说很简单几步，但是每次做添加都添加ntp就很烦，写一个脚本记录下 ##

#!/bin/bash
    read -p read -p"请输入主机名: " HOSTNAME
    #更换主机名
    hostnamectl set-hostname $HOSTNAME
    #添加DNS
    echo "nameserver 114.114.114.114" >> /etc/resolv.conf
    #换源
    version=$(cat /etc/redhat-release | awk '{print $4 }' | awk -F '.' '{print $1}')
    echo $releasetmp
    sleep 5
    yum install wget -y
    # 备份源文件
    cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak 
    wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-$version.repo
    if [[ $? -eq 0 ]];then
        echo -e "\033[32m# yum 源已成功更新为 aliyun_repo #\033[0m"; 
        sleep 3; 
    else
        echo -e "\033[31m# yum 源未成功更新为 aliyun_repo #\n3s 后退出...\033[0m";
        exit;
    fi
    wget -P /etc/yum.repos.d/ http://mirrors.aliyun.com/repo/epel-$version.repo 
    yum clean all && yum makecache && yum update -y
    yum update -y
    # 关闭防火墙&selinux
    systemctl stop firewalld.service && systemctl disable firewalld.service 
    sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config && setenforce 0
    # 安装常用软件
    yum -y install ntp lrzsz  vim  net-tools  rsync bash-completion  tree screen lsof zip unzip telnet ntp locate
    #添加ntp服务
    read -p"请输入server NTP ip: " SERVERIP
    CLIENTIP=$(ifconfig $( ip route show | awk '/default/ { print $5 }' ) |sed -n 2p |awk -F ' ' '{print$2}')
    CLENTPGET=$(ip route show | awk -F '/' ' NF>1{ print $1 }')
    CLENTMASK=$(ifconfig $( ip route show | awk '/default/ { print $5 }' ) |sed -n 2p |awk -F ' ' '{print$4}')
    #替换配置文件
    sed -i 's/restrict default nomodify notrap nopeer noquery/#restrict default nomodify notrap nopeer noquery/g' /etc/ntp.conf
    sed -i 's/restrict 127.0.0.1/restrict '"$CLIENTIP"' nomodify notrap nopeer noquery/g' /etc/ntp.conf sed -i 's/restrict ::1/restrict '"$CLENTPGET"' mask '"$CLENTMASK"' nomodify notrap/g' /etc/ntp.conf sed -i 's/server 0.centos.pool.ntp.org iburst/#server 0.centos.pool.ntp.org iburst/g' /etc/ntp.conf sed -i 's/server 1.centos.pool.ntp.org iburst/#server 1.centos.pool.ntp.org iburst/g' /etc/ntp.conf sed -i 's/server 2.centos.pool.ntp.org iburst/server '"$SERVERIP"'/g' /etc/ntp.conf sed -i 's/server 3.centos.pool.ntp.org iburst/Fudge '"$SERVERIP"' stratum 10/g' /etc/ntp.conf
    systemctl restart  ntpd  && systemctl enable  ntpd