Automating the deployment of DHCP services with Shell scripting, plus text-to-document verification

The automated DHCP service shell script is as follows:

#vim auto_dhcp.sh

#!/bin/bashread -p  "please input your ip: "  IP       #设置dhcp服务器ipread  -p  "please input your gw: "  GW       #设置dhcp服务器网关IPNET =$ (echo  $IP  |awk -F.  ' {print $1 '. " $ "." $ "$} ')    #取网段号  ip_conf="/etc/sysconfig/network-scripts/ifcfg-eth0 "   #ip配置文件sed  -i   ' s/ipaddr=.*/ipaddr= ' "$IP" '/'   $IP _conf     sed -i  ' s/gateway=.*/ Gateway= ' "$GW" '/'   $IP _confservice network restart &> /dev/nullrpm -q  dhcp &> /dev/null[ $? -eq 0 ] | |  yum -y install dhcp &> /dev/null     #安装dhcpdhcp_ version= ' rpm -qa dhcp | awk -f '-'   ' {print $2} '    #获取dhcp版本cd  /usr/share/doc/dhcp-"$dhcp _version"      #将模板配置文件进行复制一份grep -v  "#"  dhcpd.conf.sample |grep -v  "^$" |sed -e  ' s/192.168.0/' "$IPNET "'/g '  > /etc/dhcpd.conf   sed -i  '/nis\-domain/d '   /etc/ dhcpd.conf     #不配置域名sed  -i  '/domain-name/d '   /etc/dhcpd.confsed - i  ' s/' "$IPNET" '. 1\;$/' "$GW" ' \;/g '  /etc/dhcpd.confservice dhcpd start

Demonstrate:

Lab environment: Two redhat in VMware, one for DHCP server and one for verification.

Dhcp:ip 192.168.1.3 GW 192.168.1.0

A VMware configuration of two redhat VMware network configurations is as follows

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Two execute scripts to install the DHCP server

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To view the DHCP server IP address and gateway:

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Two redhat to verify with another one

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Three further validations, modify the address pool scope of the DHCP server, and verify that the client IP address changes.

1 Change the address pool from 192.168.1.128 to 192.168.1.254 to 192.168.1.128 to 192.168.1.140

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2 Restarting the DHCP service

Service DHCPD Restart

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3 Authenticating the Client

Service Network restart

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Iv. Summary

The script only can initially build the DHCP server, for some other functions can only be manually changed through the/etc/dhcpd.conf configuration file.

This article is from the "Tiandaochouqin" blog, make sure to keep this source http://luzhi1024.blog.51cto.com/8845546/1655443

Automating the deployment of DHCP services with Shell scripting, plus text-to-document verification