Linux下的主輔DNS服務(wù)器同步

• 一、系統(tǒng)環(huán)境介紹
• 二、輔助DNS搭建
• • 1.安裝yum包
  • 2.設(shè)置服務(wù)自啟
  • 3.編輯dns主配置文件
  • 4.編輯區(qū)域文件
  • 5.配置正向文件
  • 6.配置反向文件
  • 7.重啟服務(wù)和放行防火墻
• 三、客戶端指向DNS服務(wù)器
• 四、測(cè)試正向解析和反向解析
• 六、測(cè)試主從同步
• • 1.修改主DNS的正、反向配置文件
  • 2.客戶端檢查是否dns同步
• 七、主DNS服務(wù)器搭建鏈接

一、系統(tǒng)環(huán)境介紹

系統(tǒng)：rhel8.0
control：192.168.200.150 -》主DNS（已配置）
node1:192.168.200.135 -》輔助DNS
node2:192.168.200.136

二、輔助DNS搭建

1.安裝yum包

[root@node1 ~]# yum -y install bind bind-chroot Updating Subscription Management repositories. Unable to read consumer identity This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Repository AppStream is listed more than once in the configuration Repository BaseOS is listed more than once in the configuration Repository AppStream is listed more than once in the configuration Repository BaseOS is listed more than once in the configuration AppStream 165 kB/s | 3.2 kB 00:00 BaseOS 155 kB/s | 2.7 kB 00:00 ansiable 0.0 B/s | 0 B 00:00 Zabbix 1.3 kB/s | 2.9 kB 00:02 Failed to synchronize cache for repo 'ansiable', ignoring this repo. Dependencies resolved. ===============================================================================================================================================Package Arch Version Repository Size =============================================================================================================================================== Installing:bind x86_64 32:9.11.4-16.P2.el8 AppStream 2.1 Mbind-chroot x86_64 32:9.11.4-16.P2.el8 AppStream 99 kTransaction Summary =============================================================================================================================================== Install 2 PackagesTotal size: 2.2 M Installed size: 4.7 M Downloading Packages: Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transactionPreparing : 1/1 Running scriptlet: bind-32:9.11.4-16.P2.el8.x86_64 1/2 Installing : bind-32:9.11.4-16.P2.el8.x86_64 1/2 Running scriptlet: bind-32:9.11.4-16.P2.el8.x86_64 1/2 Installing : bind-chroot-32:9.11.4-16.P2.el8.x86_64 2/2 Running scriptlet: bind-chroot-32:9.11.4-16.P2.el8.x86_64 2/2 Verifying : bind-32:9.11.4-16.P2.el8.x86_64 1/2 Verifying : bind-chroot-32:9.11.4-16.P2.el8.x86_64 2/2 Installed products updated.Installed:bind-32:9.11.4-16.P2.el8.x86_64 bind-chroot-32:9.11.4-16.P2.el8.x86_64 Complete!

2.設(shè)置服務(wù)自啟

[root@node1 ~]# systemctl enable --now named Created symlink /etc/systemd/system/multi-user.target.wants/named.service → /usr/lib/systemd/system/named.service.

3.編輯dns主配置文件

[root@node1 ~]# vim /etc/named.conf options {listen-on port 53 { any; };listen-on-v6 port 53 { ::1; };directory "/var/named";dump-file "/var/named/data/cache_dump.db";statistics-file "/var/named/data/named_stats.txt";memstatistics-file "/var/named/data/named_mem_stats.txt";secroots-file "/var/named/data/named.secroots";recursing-file "/var/named/data/named.recursing";allow-query { any; };

4.編輯區(qū)域文件

[root@node1 ~]# vim /etc/named.rfc1912.zones zone "huaxia.com" IN {type slave;masters { 192.168.200.150; };file "slaves/named.zx"; };zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" IN {type master;file "named.loopback";allow-update { none; }; };zone "200.168.192.in-addr.arpa" IN {type slave;masters { 192.168.200.150; };file "slaves/named.fx"; };

5.配置正向文件

[root@node1 named]# cp -p named.localhost slaves/named.zx [root@node1 named]# cp -p named.loopback slaves/named.fx $TTL 1D @ IN SOA ns.huaxia.com. root. (20212401 ; serial10 ; refresh1H ; retry10 ; expire10 ) ; minimum @ NS ns.huaxia.com. ns IN A 192.168.200.150 server0 IN A 192.168.200.150 ~

備注：，正向、反向數(shù)據(jù)庫(kù)文件主輔同步時(shí)間頻率改為 10 秒，增加序列號(hào)，為方便快速看到同步效果，并且重啟 named 服務(wù)。（生產(chǎn)環(huán)境中保持默認(rèn)即可。）

6.配置反向文件

$TTL 1D @ IN SOA ns.huaxia.com. root. (20212413 ; serial10 ; refresh10 ; retry1W ; expire10 ) ; minimum @ NS ns.huaxia.com ns IN A 192.168.200.150 150 PTR server0.example.com

7.重啟服務(wù)和放行防火墻

[root@node1 named]# systemctl restart named [root@node1 named]# firewall-cmd --permanent --add-service=dns success [root@node1 named]# firewall-cmd --reload success

三、客戶端指向DNS服務(wù)器

[root@node2 ~]# vim /etc/resolv.conf # Generated by NetworkManager search example.com ilt.example nameserver 192.168.200.135

四、測(cè)試正向解析和反向解析

[root@node2 ~]# nslookup > server0.huaxia.com Server: 192.168.200.135 Address: 192.168.200.135#53Name: server0.huaxia.com Address: 192.168.200.150 > 192.168.200.150 150.200.168.192.in-addr.arpa name = www.huaxia.com.

六、測(cè)試主從同步

1.修改主DNS的正、反向配置文件

$TTL 1D @ IN SOA ns.huaxia.com. root. (2021062211 ; serial10 ; refresh10 ; retry1W ; expire30 ) ; minimum @ IN NS ns.huaxia.com. ns IN A 192.168.200.150 server0 IN A 192.168.200.150 www IN A 192.168.200.150 web IN CNAME web.huaxia.com. * IN A 192.168.200.150 mail IN A 192.168.200.150 @ MX 10 mail.huaxia.com. $TTL 1D @ IN SOA ns root.huaxia.com (2021062211 ; serial1D ; refresh1H ; retry1W ; expire3H ) ; minimum@ IN NS ns.huaxia.com. ns IN A 192.168.200.150 150 PTR www.huaxia.com. 150 PTR mail.huaxia.com. 150 PTR server0.example.com.

2.客戶端檢查是否dns同步

150.200.168.192.in-addr.arpa name = server0.example.com. 150.200.168.192.in-addr.arpa name = www.huaxia.com. 150.200.168.192.in-addr.arpa name = mail.huaxia.com.[root@node2 ~]# nslookup server0.huaxia.com Server: 192.168.200.135 Address: 192.168.200.135#53Name: server0.huaxia.com Address: 192.168.200.150[root@node2 ~]# nslookup www.huaxia.com Server: 192.168.200.135 Address: 192.168.200.135#53Name: www.huaxia.com Address: 192.168.200.150

七、主DNS服務(wù)器搭建鏈接

Linux下的DNS服務(wù)器搭建

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