yum install dnsmasq mv /etc/dnsmasq.conf /etc/dnsmasq.conf.backup # vim /etc/dnsmasq.conf interface=eth0,lo #bind-interfaces domain=centos7.lan # DHCP range-leases dhcp-range= eth0,10.10.0.20,10.10.0.30,255.255.255.0,1h # PXE dhcp-boot=pxelinux.,pxes…