shell 脚本快速部署dhcp服务器!

服务器地址：192.168.1.110

 网段：192.168.1.0

 子网掩码：255.255.255.0

 网关：192.168.1.254

[[email protected] ~]# cat dhcp.sh
#!/bin/bash
#auto deploy dhcp server for  192.168.1.0/24 netmask
#this script need you have you yum repository
echo "____________mount-cdrom_____"
umount /dev/cdrom &> /dev/null                         # 卸载光盘
mount /dev/cdrom /mnt  &> /dev/null &&          #重新挂载系统光盘
touch /etc/yum.repos.d/yum.repo                # 创建yum的配置文件，名称yum.repo
if [ $? -eq  0  ]
    then                                                                   # 判断创建yum文件成功就执行写入以下参数
cat <<EOF > /etc/yum.repos.d/yum.repo
[server] 
name=rehat server yum
baseurl=file:///mnt/Server                      # URL的访问路径
enabled=1                                               #启动yum的仓库
gpgcheck=0                                              #不启用软件包的签名
EOF                                                     

     else                                                             #否则打印出安装yum错误！
 echo "_-----install yum error___"   
fi

#安装dhcp软件包

echo "___-install dhcp packet__ "
yum -y install dhcp &> /dev/null &&
if [ -f /etc/dhcpd.conf ]  #判断是否有/etc/dhcpd.conf这个主配置文件
      then                                          #执行
  mv /etc/dhcp.conf /etc/dhcpd.conf.save   #保存原有的配置文件
fi
#变量定义，主要包括网络，子网，地址等信息
NET=192.168.1.0
MASK=255.255.255.0
RANGE="192.168.1.50 192.168.1.100"
DOMAIN_NAME="breaklinux.com"
ROUTER=192.168.1.254
DNS=8.8.8.8
#创建新的配置文件
echo "______create Configuration file______"
cat <<EOF > /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;

subnet $NET  netmask $MASK {

# --- default gateway
 option routers   $ROUTER;
 option subnet-mask  $MASK;

 option nis-domain  "$DOMAIN_NAME";
 option domain-name  "$DOMAIN_NAME";
 option domain-name-servers $DNS;

 option time-offset  -18000; # Eastern Standard Time
# option ntp-servers  192.168.1.1;
# option netbios-name-servers 192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don‘t change this unless
# -- you understand Netbios very well
# option netbios-node-type 2;

 range dynamic-bootp $RANGE;
 default-lease-time 21600;
 max-lease-time 43200;

 # we want the nameserver to appear at a fixed address
 host ns {
  next-server marvin.redhat.com;
  hardware ethernet 12:34:56:78:AB:CD;
  fixed-address 207.175.42.254;
 }
}
EOF
echo "_____________dhcp Configuration file correctly "
service dhcpd  restart  #启动dhcp服务
chkconfig dhcpd on      #开机启动

                                           搭建dhcp服务器完成

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                                      作者：---新

shell 脚本快速部署dhcp服务器!