一、實驗環境
dnsmasp01? ?192.168.1.104
dnsmasq02? ?192.168.1.106
dnsclient? ? ? ?192.168.1.102
二、安裝配置
在dnsmasp01服務器
#?yum -y install dnsmasq
# cat /etc/dnsmasq.conf
###################################
domain-needed
bogus-priv
resolv-file=/etc/resolv.conf
strict-order
address=/www.example.com/192.168.1.110
address=/www.example.com/192.168.1.120
listen-address=127.0.0.1,192.168.1.104
no-hosts
expand-hosts
addn-hosts=/etc/hosts
domain=www.example.com
conf-dir=/etc/dnsmasq.d
#####################################
在dnsmasp02服務器
#?yum -y install dnsmasq
# cat /etc/dnsmasq.conf
######################################
domain-needed
bogus-priv
resolv-file=/etc/resolv.conf
strict-order
address=/www.example.com/192.168.1.110
address=/www.example.com/192.168.1.120
listen-address=127.0.0.1,192.168.1.106
no-hosts
expand-hosts
addn-hosts=/etc/hosts
domain=www.example.com
conf-dir=/etc/dnsmasq.d
##########################################
啟動dnsmasq
# systemctl restart dnsmasq
# systemctl status dnsmasq
# systemctl enable? dnsmasq
三、dnsclient服務器域名解析測試
# cat /etc/resolv.conf
# ping www.example.com
# ping www.baidu.com
測試可知，dnsmasq可以繼承宿主機的nameserver，內外網域名解析，沒問題。
關閉dnsmasq01上服務，也就是說?nameserver 192.168.1.104 無法工作了
# systemctl stop dnsmasq
在dnsclient上測試域名解析
# ping www.example.com
# ping www.baidu.com
# nslookup www.example.com
nameserver 192.168.1.104掛了，nameserver 192.168.1.106，依然能順利完成解析！
四、參考
How to Setup a DNS/DHCP Server Using dnsmasq on CentOS/RHEL 8/7
https://www.tecmint.com/setup-a-dns-dhcp-server-using-dnsmasq-on-centos-rhel
dnsmasq wiki
https://wiki.archlinux.org/title/dnsmasq
Index of /dnsmasq
https://thekelleys.org.uk/dnsmasq
負載均衡手段之DNS輪詢
https://www.cnblogs.com/data2value/p/6107380.html
什么是循環 DNS？
https://www.cloudflare.com/zh-cn/learning/dns/glossary/round-robin-dns/
Using Dnsmasq for local development on OS X
https://passingcuriosity.com/2013/dnsmasq-dev-osx
dnsmasq輕量級DNS安裝配置
https://developer.aliyun.com/article/459556
Linux安裝DNSmasq搭建自己的公共DNS
https://cloud.tencent.com/developer/article/1024293
使用 dnsmasq 轉發 dns 請求
https://einverne.github.io/post/2014/05/dnsmasq-dns-forward.html
DNS 解析 DNSPod
https://cloud.tencent.com/document/product/302
Simple Load Balancing with DNS on Linux
https://www.linux.com/topic/networking/simple-load-balancing-dns-linux
dnsmasq 介紹與使用
http://www.enkichen.com/2017/05/23/dnsmasq-introduce
