How to Create CoreDNS in Linux

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[root@example ~]#   wget https://github.com/coredns/coredns/releases/download/v1.11.1/coredns_1.11.1_linux_amd64.tgz


[root@example ~]#  tar -xvf coredns_1.11.1_linux_amd64.tgz

[root@example ~]#  mkdir /opt/CoreDNS

[root@example ~]#  mv coredns /opt/CoreDNS

[root@example ~]#  cd /opt/CoreDNS

[root@example CoreDNS ]#  vim  corefile

 raju.com {
         file db.raju.com
     }

rajeev.com {
      file db.rajeev.com
}

[root@example CoreDNS ]#  vim  db.raju.com

$ORIGIN raju.com.
@    3600  IN SOA ns1.raju.com. root.raju.com. (
                                2017042745 ; serial
                                7200       ; refresh (2 hours)
                                3600       ; retry (1 hour)
                                1209600    ; expire (2 weeks)
                                3600       ; minimum (1 hour)
                                )

3600      IN NS   ns1.raju.com.
@          IN A     192.168.122.90
host1     IN A     192.168.122.91
ns1        IN A     192.168.122.90

[root@example CoreDNS ]#   vim  db.rajeev.com

$ORIGIN rajeev.com.
@    3600    IN SOA ns1.rajeev.com. root.rajeev.com. (
                                2017042745 ; serial
                                7200       ; refresh (2 hours)
                                3600       ; retry (1 hour)
                                1209600    ; expire (2 weeks)
                                3600       ; minimum (1 hour)
                                )

3600        IN NS   ns1.rajeev.com.
@            IN A     192.168.122.100
host2       IN A     192.168.122.101
ns1          IN A     192.168.122.100

[root@example CoreDNS ]#  nohup ./coredns -conf corefile &

[root@example CoreDNS ]#  vim /etc/resolv.conf
nameserver  127.0.0.1

[root@example CoreDNS ]#  nslookup raju.com
Server:  127.0.0.1
Address: 127.0.0.1#53

Name: raju.com
Address: 192.168.122.90

[root@example CoreDNS ]#  nslookup host1.raju.com
Server:  127.0.0.1
Address: 127.0.0.1#53

Name: host.raju.com
Address: 192.168.122.91



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