Shell script - automatically deploy DNS services

Shell Script —— Automatic deployment DNS service

Script

#!/bin/bash
yum -y install bind
read -p " Please enter the local address ：" a
# Edit the main configuration file 
sed -i '/listen-on port 53/s/[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+/'$a'/' /etc/named.conf
sed -i '/allow-query/s/localhost/any/g' /etc/named.conf
read -p " Please enter the domain name you need to resolve :"  b
# Modify area profile 
sed -i '24azone "'$b'" IN {\n type master;\n file "'$b'.zone";\n allow-update { none; };\n};'  /etc/named.rfc1912.zones
# Modify the regional data profile 
cp -p /var/named/named.localhost /var/named/$b.zone
sed -i '/NS/s/@/'$b'./g' /var/named/$b.zone
sed -i '9s/[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+/'$a'/' /var/named/$b.zone
sed -i '10aIN MX 10 mail.'$b'\nwww IN A '$a'\nmail IN A '$a'\nftp IN CNAME www\n\* IN A '$a'' /var/named/$b.zone
# Add mapping relationship 
echo "$a www.$b" >>/etc/hosts
# Modify mapping file 
echo "nameserver $a" >>/etc/resolc.conf
# Opening service 
systemctl start named

perform

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