ddns脚本

#!/bin/bash
yum install bind -y
yum install dhcp -y
systemctl start named
systemctl stop firewalld

cd /mnt
dnssec-keygen -a HMAC-MD5 -b 128 -n HOST westos
KEY=`cat K*.key | cut -d " " -f 7`

cp -p /etc/rndc.key /etc/westos.key
cat > /etc/westos.key < key "westos" {
        algorithm hmac-md5;
        secret "$KEY";
};
END

chmod 770 /var/named
sed -i 's/127\.0\.0\.1/any/g' /etc/named.conf
sed -i 's/localhost/any/g' /etc/named.conf
sed -i 's/dnssec-validation\ yes/dnssec-validation\ no/g' /etc/named.conf
cat >> /etc/named.conf << END
include "/etc/westos.key";
END

cat >> /etc/named.rfc1912.zones < zone "westoslinux.com" IN {
        type master;
        file"westoslinux.com.zone";
        allow-update { key westos;};
        allow-transfer {172.25.254.214;};
        also-notify {172.25.254.214;};
};
END

cp -p /var/named/named.localhost /var/named/westoslinux.com.zone
cat > /var/named/westoslinux.com.zone << END
\$TTL 1D
@       IN SOA  dns root (
                                       10      ; serial
                                       1D      ; refresh
                                       1H      ; retry
                                       1W      ; expire
                                       3H )    ; minimum
        NS      dns.westoslinux.com.
dns     A       172.25.254.114
www     A       172.25.254.114
END

##閰嶇疆/etc/dhcp/dhcpd.conf鏂囦欢
cat > /etc/dhcp/dhcpd.conf << END
option domain-name "westoslinux.com";
option domain-name-servers 172.25.254.64;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
ddns-update-style interim;
subnet 172.25.254.0 netmask 255.255.255.0 {
  range 172.25.254.180172.25.254.200;
  option routers 172.25.254.64;
}
key westos {
        algorithm hmac-md5;
        secret $KEY;
};
zone westoslinux.com.{
        primary 127.0.0.1;
        key westos;
}
END

systemctl start dhcpd
systemctl restart named