hostnamectl status
hostnamectl set-hostname dns
hostnamectl status






systemctl stop firewalld
systemctl disable firewalld
systemctl stop avahi-daemon.socket
systemctl disable avahi-daemon.socket
systemctl stop avahi-daemon
systemctl disable avahi-daemon
systemctl stop libvirtd
systemctl disable libvirtd



[root@dns ~]# systemctl stop firewalld
[root@dns ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@dns ~]# systemctl stop avahi-daemon.socket
Job for avahi-daemon.socket canceled.
[root@dns ~]# systemctl disable avahi-daemon.socket
Removed symlink /etc/systemd/system/sockets.target.wants/avahi-daemon.socket.
[root@dns ~]# systemctl stop avahi-daemon
Warning: Stopping avahi-daemon.service, but it can still be activated by:
  avahi-daemon.socket
[root@dns ~]# systemctl disable avahi-daemon
Removed symlink /etc/systemd/system/multi-user.target.wants/avahi-daemon.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.Avahi.service.
[root@dns ~]# systemctl stop libvirtd
[root@dns ~]# systemctl disable libvirtd
Removed symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlogd.socket.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket.





rpm -ivh python-ply-3.4-11.el7.noarch.rpm
rpm -ivh bind-license-9.9.4-72.el7.noarch.rpm
rpm -Uvh bind-utils-9.9.4-72.el7.x86_64.rpm bind-libs-9.9.4-72.el7.x86_64.rpm
rpm -ivh bind-9.9.4-72.el7.x86_64.rpm
rpm -ivh bind-chroot-9.9.4-72.el7.x86_64.rpm



[root@dns Packages]# rpm -ivh python-ply-3.4-11.el7.noarch.rpm
경고: python-ply-3.4-11.el7.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
준비 중...                         ################################# [100%]
Updating / installing...
   1:python-ply-3.4-11.el7            ################################# [100%]

[root@dns Packages]# rpm -ivh bind-license-9.9.4-72.el7.noarch.rpm
경고: bind-license-9.9.4-72.el7.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
준비 중...                         ################################# [100%]
Updating / installing...
   1:bind-license-32:9.9.4-72.el7     ################################# [100%]

[root@dns Packages]# rpm -Uvh bind-utils-9.9.4-72.el7.x86_64.rpm bind-libs-9.9.4-72.el7.x86_64.rpm
경고: bind-utils-9.9.4-72.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
준비 중...                         ################################# [100%]
Updating / installing...
   1:bind-libs-32:9.9.4-72.el7        ################################# [ 25%]
   2:bind-utils-32:9.9.4-72.el7       ################################# [ 50%]
Cleaning up / removing...
   3:bind-utils-32:9.9.4-61.el7       ################################# [ 75%]
   4:bind-libs-32:9.9.4-61.el7        ################################# [100%]

[root@dns Packages]# rpm -ivh bind-9.9.4-72.el7.x86_64.rpm
경고: bind-9.9.4-72.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
준비 중...                         ################################# [100%]
Updating / installing...
   1:bind-32:9.9.4-72.el7             ################################# [100%]

[root@dns Packages]# rpm -ivh bind-chroot-9.9.4-72.el7.x86_64.rpm
경고: bind-chroot-9.9.4-72.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
준비 중...                         ################################# [100%]
Updating / installing...
   1:bind-chroot-32:9.9.4-72.el7      ################################# [100%]







/usr/libexec/setup-named-chroot.sh /var/named/chroot on
systemctl stop named
systemctl disable named
systemctl start named-chroot
systemctl enable named-chroot



[root@dns ~]# /usr/libexec/setup-named-chroot.sh /var/named/chroot on
[root@dns ~]# systemctl stop named
[root@dns ~]# systemctl disable named
Removed symlink /etc/systemd/system/multi-user.target.wants/named.service.
[root@dns ~]# systemctl start named-chroot
[root@dns ~]# systemctl enable named-chroot
Created symlink from /etc/systemd/system/multi-user.target.wants/named-chroot.service to /usr/lib/systemd/system/named-chroot.service.





//        listen-on port 53 { 127.0.0.1; };
        listen-on port 53 { 127.0.0.1; 10.0.1.150; };

//        allow-query     { localhost; };
        allow-query     { 10.0.1.0/24; };




zone "localdomain." IN {
        type master;
        file "localdomain.zone";
        allow-update { none; };
};

zone "1.0.10.in-addr.arpa." IN {
        type master;
        file "1.0.10.in-addr.arpa";
        allow-update { none; };
};




$TTL    86400
@               IN SOA  localhost root.localhost (
                                        42              ; serial (d. adams)
                                        3H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        1D )            ; minimum
                IN NS           localhost
localhost       IN A            127.0.0.1
rac-scan        IN A    		10.0.1.191
rac-scan        IN A    		10.0.1.192
rac-scan        IN A    		10.0.1.193




$ORIGIN 1.0.10.in-addr.arpa.
$TTL 1H
@   IN  SOA dns.localdomain.    root.dns.localdomain. (      2
                    3H
                    1H
                    1W
                    1H )
1.0.10.in-addr.arpa.	IN NS   dns.localdomain.
191 					IN PTR  rac-scan.localdomain.
192						IN PTR  rac-scan.localdomain.
193						IN PTR  rac-scan.localdomain.




chown root:named /var/named/chroot/var/named/localdomain.zone
chown root:named /var/named/chroot/var/named/1.0.10.in-addr.arpa
systemctl restart named-chroot



[root@dns ~]# chown root:named /var/named/chroot/var/named/localdomain.zone
[root@dns ~]# chown root:named /var/named/chroot/var/named/1.0.10.in-addr.arpa
[root@dns ~]# systemctl restart named-chroot





nslookup rac-scan.localdomain
nslookup 10.0.1.191
nslookup 10.0.1.192
nslookup 10.0.1.193



[root@rac1 ~]# nslookup rac-scan.localdomain
Server:         10.0.1.150
Address:        10.0.1.150#53

Name:   rac-scan.localdomain
Address: 10.0.1.191
Name:   rac-scan.localdomain
Address: 10.0.1.193
Name:   rac-scan.localdomain
Address: 10.0.1.192

[root@rac1 ~]# nslookup rac-scan.localdomain
Server:         10.0.1.150
Address:        10.0.1.150#53

Name:   rac-scan.localdomain
Address: 10.0.1.193
Name:   rac-scan.localdomain
Address: 10.0.1.191
Name:   rac-scan.localdomain
Address: 10.0.1.192

[root@rac1 ~]# nslookup rac-scan.localdomain
Server:         10.0.1.150
Address:        10.0.1.150#53

Name:   rac-scan.localdomain
Address: 10.0.1.192
Name:   rac-scan.localdomain
Address: 10.0.1.193
Name:   rac-scan.localdomain
Address: 10.0.1.191

[root@rac1 ~]# nslookup 10.0.1.191
Server:         10.0.1.150
Address:        10.0.1.150#53

191.1.0.10.in-addr.arpa name = rac-scan.localdomain.

[root@rac1 ~]# nslookup 10.0.1.192
Server:         10.0.1.150
Address:        10.0.1.150#53

192.1.0.10.in-addr.arpa name = rac-scan.localdomain.

[root@rac1 ~]# nslookup 10.0.1.193
Server:         10.0.1.150
Address:        10.0.1.150#53

193.1.0.10.in-addr.arpa name = rac-scan.localdomain.