自动修改centos服务器IP地址

配置Linux服务器静态I地址P。 
IP配置默认存放路径：/etc/sysconfig/network-scripts/。
修改IP地址会同步修改：IP、NETMASK、GATEWAY。
IP地址修改完成后，确认重启网卡服务。

vim automatically_modify_server_IP.sh

   #!/bin/bash
    #2021-3-22 10:41:02
    #auto change server ip
    #Automatically modify server IP
    ######################
    ETH_DEV="ens33"
    BAK_DIR="/data/backup/`date +%Y%m%d`"
    NETMASK="255.255.255.0"
    GATEWAY="192.168.11.1"
    DNS1="114.114.114.114
    ETH_DIR="/etc/sysconfig/network-scripts/"
    read -p "Please Enter Server IP address; " IPADDR
    mkdir -p $BAK_DIR/
    cd $ETH_DIR
    cp ifcfg-${ETH_DEV} $BAK_DIR/ifcfg-${ETH_DEV}.$$
    echo "TYPE=Ethernet
    BOOTPROTO=static
    ONBOOT=yes
    DEVICE=$ETH_DEV
    IPADDR=$IPADDR
    NETMASK=$NETMASK
    GATEWAY=$GATEWAY
    DNS1=$DNS1">ifcfg-${ETH_DEV}
    echo -e "\033[32m------------------------------\033[0m"
    cat ifcfg-${ETH_DEV}
    echo
    sleep 2
    #read -p "Plesae Enter yes or on,Restart Network.service or Quit?:" INPUT
    read -p "Network Service  is about to restart,To confirm enter either YES or ON?:" INPUT
    if [ $INPUT == "yes" -o $INPUT == "y" -o $INPUT == "yes" -o $INPUT == "Y" ];then
    service network  restart
            elif  [ $INPUT == "R" -o $INPUT == "r"  ];then
    \cp $BAK_DIR/ifcfg-${ETH_DEV}.$$ ifcfg-${ETH_DEV}
    cat ifcfg-${ETH_DEV}
            fi

自动修改centos服务器IP地址

原文：https://blog.51cto.com/11353391/2668080