阿里云ECS Rockylinux9 修改默认dns

创建配置文件

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/etc/NetworkManager/conf.d/dns.conf
[main]
dns=null
/etc/NetworkManager/conf.d/dns-servers.conf
[global-dns-domain-*]
servers=127.0.0.1,100.100.2.138

重启NetworkManager 服务

systemctl restart NetworkManager

查看 cat /etc/resolv.conf 内容是否修改
如果没生效重启云主机看看