实现Internet 的DNS 服务架构
整体架构的构架图如下图(其中服务器用centos8系统搭建,测试客户端用centos7系统实现)
1.8台主机介绍
DNS客户端:10.0.0.7/24 本地DNS服务器(只缓存):10.0.0.8/24 转发目标DNS服务器:10.0.0.18/24 根DNS服务器:10.0.0.28/24 org域DNS服务器:10.0.0.38/24 magedu.org域主DNS服务器:10.0.0.48/24 magedu.org域从DNS服务器:10.0.0.58/24 www.magedu.org的WEB服务器:10.0.0.68/24
2.服务器具体的搭建过程
#为防止服务器搭建过程出现错误,我们从后往前搭建(利用测试客户端不断检测,以免搭建过程出现错误)
(1)搭建web服务器10.0.0.68
[ ~]$yum -y install httpd [ ~]$systemctl enable --now httpd Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service →/usr/lib/systemd/system/httpd.service. [ ~]$echo www.magedu.org > /var/www/html/index.html
(2)搭建主DNS服务器:10.0.0.48
[ ~]$yum -y install bind bind-utils [ ~]$vim /etc/named.conf // listen-on port 53 { 127.0.0.1; }; // allow-query { localhost; }; [ ~]$vim /etc/named.rfc1912.zones zone "magedu.org" { type master; file "magedu.org.zone"; }; [ ~]$vim /var/named/magedu.org.zone 1 $TTL 1D 2 @ IN SOA master admin.magedu.org. ( 3 1 ; serial 4 1D ; refresh 5 1H ; retry 6 1W ; expire 7 3H ) ; minimum 8 NS master 9 NS slave 10 master A 10.0.0.48 11 slave A 10.0.0.58 12 www A 10.0.0.68 [ ~]$systemctl start named
(3)搭建从DNS服务器:10.0.0.58
[ ~]$yum -y install bind bind-utils [ ~]$vim /etc/named.conf // listen-on port 53 { 127.0.0.1; }; // allow-query { localhost; }; [ ~]$vim /etc/named.rfc1912.zones zone "magedu.org" { type slave; masters {10.0.0.48;}; file "slaves/magedu.org.zone"; }; [ ~]$systemctl start named [ ~]$ll /var/named/slaves/ total 4 -rw-r--r-- 1 named named 319 May 31 14:53 magedu.org.zone
(4)搭建org域DNS服务器:10.0.0.38
[ ~]$yum -y install bind bind-utils [ ~]$vim /etc/named.conf // listen-on port 53 { 127.0.0.1; }; // allow-query { localhost; }; [ ~]$vim /etc/named.rfc1912.zones zone "org" IN { type master; file "org.zone"; }; [ ~]$vim /var/named/org.zone $TTL 1D @ IN SOA master admin.magedu.org. ( 1 1D 1H 1W 3D ) NS master magedu NS mageduns1 magedu NS mageduns2 master A 10.0.0.38 mageduns1 A 10.0.0.48 mageduns2 A 10.0.0.58 [ ~]$systemctl restart named
(5)搭建根DNS服务器:10.0.0.28
[ ~]$yum -y install bind bind-utils [ ~]$vim /etc/named.conf // listen-on port 53 { 127.0.0.1; }; // allow-query { localhost; }; #默认有根服务器,所有更改在53行 zone "." IN { type master; file "root.zone"; }; [ ~]$vim /var/named/root.zone $TTL 1D @ IN SOA master admin.magedu.org. ( 1 1D 1H 1W 3D ) NS master org NS orgns master A 10.0.0.28 orgns A 10.0.0.38 [ ~]$systemctl start named
(6)搭建转发目标DNS服务器:10.0.0.18
[ ~]$yum -y install bind bind-utils [ ~]$vim /etc/named.conf // listen-on port 53 { 127.0.0.1; }; // allow-query { localhost; }; 33 dnssec-enable no; 34 dnssec-validation no; [ ~]$vim /var/named/named.ca . 518400 IN NS a.root-servers.net. a.root-servers.net. 518400 IN A 10.0.0.28 [ ~]$systemctl restart named
(7)搭建本地DNS服务器(只缓存):10.0.0.8
[ 8 ~]$yum -y install bind bind-utils [ 8 ~]$vim /etc/named.conf // listen-on port 53 { 127.0.0.1; }; // allow-query { localhost; }; forward only; forwarders {10.0.0.18;}; 33 dnssec-enable no; 34 dnssec-validation no; [ ~]$systemctl restart named
(8)客户端10.0.0.7测试部分(此部分并非为最后一步,而是随着七台服务器的搭建过程中随时测试,出现以下测试结果则服务器搭建成功)
[ ~]$curl 10.0.0.68 www.magedu.org [ ~]$host www.magedu.org 10.0.0.48 Using domain server: Name: 10.0.0.48 Address: 10.0.0.48#53 Aliases: www.magedu.org has address 10.0.0.68 [ ~]$host www.magedu.org 10.0.0.58 Using domain server: Name: 10.0.0.58 Address: 10.0.0.58#53 Aliases: www.magedu.org has address 10.0.0.68 [ ~]$host www.magedu.org 10.0.0.38 Using domain server: Name: 10.0.0.38 Address: 10.0.0.38#53 Aliases: www.magedu.org has address 10.0.0.68 [ ~]$host www.magedu.org 10.0.0.28 Using domain server: Name: 10.0.0.28 Address: 10.0.0.28#53 Aliases: www.magedu.org has address 10.0.0.68 [ ~]$host www.magedu.org 10.0.0.18 Using domain server: Name: 10.0.0.18 Address: 10.0.0.18#53 Aliases: www.magedu.org has address 10.0.0.68 [ ~]$host www.magedu.org 10.0.0.8 Using domain server: Name: 10.0.0.8 Address: 10.0.0.8#53 Aliases: www.magedu.org has address 10.0.0.68 [ ~]$curl www.magedu.org www.magedu.org [ ~]$
相关推荐
localhost0 2020-11-12
jlccwss 2020-09-11
lwplvx 2020-09-07
YzhilongY 2020-08-31
KevinXC 2020-08-12
oLeiShen 2020-08-01
dahege 2020-08-01
windzoone 2020-07-29
travelinrain 2020-07-27
hxf0 2020-07-10
oLeiShen 2020-06-25
oLeiShen 2020-06-25
dahege 2020-06-25
dahege 2020-06-22
MissFuTT 2020-06-21
ationwork 2020-06-16
kenson 2020-06-12
chwzmx 2020-06-09