[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6},"actionData","errors","routes/tags.$tag",{"_7":8,"_9":10,"_11":12},"tag","coredns","docs",[13],"count",1,{"_14":15,"_16":17,"_18":19,"_20":21,"_22":23,"_24":25,"_26":27},"slug","setup-coredns-on-ubuntu","title","Ubuntu 安装配置 CoreDNS","date","2023-10-17","description","使用 CoreDNS 配置自定义 DNS 解析服务","content","

CoreDNS 是云原生的 DNS 服务器，配置简洁，功能强大。相比 dnsmasq 和 unbound 更灵活。

DNS 服务对比

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

名称	特点
dnsmasq	轻量，但不支持非 53 端口
unbound	功能强大，配置繁琐
CoreDNS	云原生，配置简单，插件化

安装 CoreDNS

下载地址: https://github.com/coredns/coredns/releases

# 解压并安装\ntar xzf coredns_*.tar.gz\nmv coredns /usr/local/bin/\n

创建 systemd 服务

/etc/systemd/system/coredns.service:

[Unit]\nDescription=CoreDNS DNS Server\nAfter=network.target\n\n[Service]\nType=simple\nRestart=always\nExecStart=/usr/local/bin/coredns -conf /home/pi/workspace/coredns/config.cfg\n\n[Install]\nWantedBy=multi-user.target\n

DNS 配置文件

config.cfg:

. {\n    log\n    cache 300\n\n    # 阿里系域名使用阿里 DNS\n    forward tmall.com 223.5.5.5\n    forward taobao.com 223.5.5.5\n    forward alipay.com 223.5.5.5\n    forward alicdn.com 223.5.5.5\n    forward aliyun.com 223.5.5.5\n\n    # 腾讯系域名使用腾讯 DNS\n    forward jd.com 119.28.28.28\n    forward qq.com 119.28.28.28\n    forward weixin.com 119.28.28.28\n\n    # 其他域名\n    forward mi.com 119.29.29.29\n    forward bilibili.com 119.29.29.29\n\n    # 默认上游 DNS\n    forward . 127.0.0.1:1053\n}\n

配置说明：

log: 启用查询日志
cache: 缓存时间（秒）
forward: 指定域名使用特定上游 DNS

启动服务

# 停用 systemd-resolved（避免端口冲突）\nsystemctl stop systemd-resolved\nsystemctl disable systemd-resolved\n\n# 启动 CoreDNS\nsystemctl start coredns.service\nsystemctl enable coredns.service\n

验证 DNS

# 使用 dig 测试\ndig @localhost taobao.com\n\n# 查看日志\njournalctl -u coredns -f\n

注意事项

默认 DNS 端口 53，需要停用 systemd-resolved
可配置多个上游 DNS 服务器
支持多种插件扩展功能（hosts、file、etcd 等）

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