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Synchronize your DNS to multiple providers from a simple DSL
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dependabot[bot] 2a7ac6f1a3
Build(deps): Bump actions/checkout from 5 to 6 (#3851) 
Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to
6.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/actions/checkout/releases">actions/checkout's
releases</a>.</em></p>
<blockquote>
<h2>v6.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Update README to include Node.js 24 support details and requirements
by <a href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2248">actions/checkout#2248</a></li>
<li>Persist creds to a separate file by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2286">actions/checkout#2286</a></li>
<li>v6-beta by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2298">actions/checkout#2298</a></li>
<li>update readme/changelog for v6 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2311">actions/checkout#2311</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v5.0.0...v6.0.0">https://github.com/actions/checkout/compare/v5.0.0...v6.0.0</a></p>
<h2>v6-beta</h2>
<h2>What's Changed</h2>
<p>Updated persist-credentials to store the credentials under
<code>$RUNNER_TEMP</code> instead of directly in the local git
config.</p>
<p>This requires a minimum Actions Runner version of <a
href="https://github.com/actions/runner/releases/tag/v2.329.0">v2.329.0</a>
to access the persisted credentials for <a
href="https://docs.github.com/en/actions/tutorials/use-containerized-services/create-a-docker-container-action">Docker
container action</a> scenarios.</p>
<h2>v5.0.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Port v6 cleanup to v5 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2301">actions/checkout#2301</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v5...v5.0.1">https://github.com/actions/checkout/compare/v5...v5.0.1</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/actions/checkout/blob/main/CHANGELOG.md">actions/checkout's
changelog</a>.</em></p>
<blockquote>
<h1>Changelog</h1>
<h2>V6.0.0</h2>
<ul>
<li>Persist creds to a separate file by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2286">actions/checkout#2286</a></li>
<li>Update README to include Node.js 24 support details and requirements
by <a href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2248">actions/checkout#2248</a></li>
</ul>
<h2>V5.0.1</h2>
<ul>
<li>Port v6 cleanup to v5 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2301">actions/checkout#2301</a></li>
</ul>
<h2>V5.0.0</h2>
<ul>
<li>Update actions checkout to use node 24 by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2226">actions/checkout#2226</a></li>
</ul>
<h2>V4.3.1</h2>
<ul>
<li>Port v6 cleanup to v4 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2305">actions/checkout#2305</a></li>
</ul>
<h2>V4.3.0</h2>
<ul>
<li>docs: update README.md by <a
href="https://github.com/motss"><code>@​motss</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1971">actions/checkout#1971</a></li>
<li>Add internal repos for checking out multiple repositories by <a
href="https://github.com/mouismail"><code>@​mouismail</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1977">actions/checkout#1977</a></li>
<li>Documentation update - add recommended permissions to Readme by <a
href="https://github.com/benwells"><code>@​benwells</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2043">actions/checkout#2043</a></li>
<li>Adjust positioning of user email note and permissions heading by <a
href="https://github.com/joshmgross"><code>@​joshmgross</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2044">actions/checkout#2044</a></li>
<li>Update README.md by <a
href="https://github.com/nebuk89"><code>@​nebuk89</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2194">actions/checkout#2194</a></li>
<li>Update CODEOWNERS for actions by <a
href="https://github.com/TingluoHuang"><code>@​TingluoHuang</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2224">actions/checkout#2224</a></li>
<li>Update package dependencies by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2236">actions/checkout#2236</a></li>
</ul>
<h2>v4.2.2</h2>
<ul>
<li><code>url-helper.ts</code> now leverages well-known environment
variables by <a href="https://github.com/jww3"><code>@​jww3</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/1941">actions/checkout#1941</a></li>
<li>Expand unit test coverage for <code>isGhes</code> by <a
href="https://github.com/jww3"><code>@​jww3</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1946">actions/checkout#1946</a></li>
</ul>
<h2>v4.2.1</h2>
<ul>
<li>Check out other refs/* by commit if provided, fall back to ref by <a
href="https://github.com/orhantoy"><code>@​orhantoy</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1924">actions/checkout#1924</a></li>
</ul>
<h2>v4.2.0</h2>
<ul>
<li>Add Ref and Commit outputs by <a
href="https://github.com/lucacome"><code>@​lucacome</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1180">actions/checkout#1180</a></li>
<li>Dependency updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>- <a
href="https://redirect.github.com/actions/checkout/pull/1777">actions/checkout#1777</a>,
<a
href="https://redirect.github.com/actions/checkout/pull/1872">actions/checkout#1872</a></li>
</ul>
<h2>v4.1.7</h2>
<ul>
<li>Bump the minor-npm-dependencies group across 1 directory with 4
updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1739">actions/checkout#1739</a></li>
<li>Bump actions/checkout from 3 to 4 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1697">actions/checkout#1697</a></li>
<li>Check out other refs/* by commit by <a
href="https://github.com/orhantoy"><code>@​orhantoy</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1774">actions/checkout#1774</a></li>
<li>Pin actions/checkout's own workflows to a known, good, stable
version. by <a href="https://github.com/jww3"><code>@​jww3</code></a> in
<a
href="https://redirect.github.com/actions/checkout/pull/1776">actions/checkout#1776</a></li>
</ul>
<h2>v4.1.6</h2>
<ul>
<li>Check platform to set archive extension appropriately by <a
href="https://github.com/cory-miller"><code>@​cory-miller</code></a> in
<a
href="https://redirect.github.com/actions/checkout/pull/1732">actions/checkout#1732</a></li>
</ul>
<h2>v4.1.5</h2>
<ul>
<li>Update NPM dependencies by <a
href="https://github.com/cory-miller"><code>@​cory-miller</code></a> in
<a
href="https://redirect.github.com/actions/checkout/pull/1703">actions/checkout#1703</a></li>
<li>Bump github/codeql-action from 2 to 3 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1694">actions/checkout#1694</a></li>
<li>Bump actions/setup-node from 1 to 4 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1696">actions/checkout#1696</a></li>
<li>Bump actions/upload-artifact from 2 to 4 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1695">actions/checkout#1695</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="1af3b93b68"><code>1af3b93</code></a>
update readme/changelog for v6 (<a
href="https://redirect.github.com/actions/checkout/issues/2311">#2311</a>)</li>
<li><a
href="71cf2267d8"><code>71cf226</code></a>
v6-beta (<a
href="https://redirect.github.com/actions/checkout/issues/2298">#2298</a>)</li>
<li><a
href="069c695914"><code>069c695</code></a>
Persist creds to a separate file (<a
href="https://redirect.github.com/actions/checkout/issues/2286">#2286</a>)</li>
<li><a
href="ff7abcd0c3"><code>ff7abcd</code></a>
Update README to include Node.js 24 support details and requirements (<a
href="https://redirect.github.com/actions/checkout/issues/2248">#2248</a>)</li>
<li>See full diff in <a
href="https://github.com/actions/checkout/compare/v5...v6">compare
view</a></li>
</ul>
</details>
<br />


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2025-11-24 20:29:20 -05:00
.github Build(deps): Bump actions/checkout from 5 to 6 (#3851) 2025-11-24 20:29:20 -05:00
bin CICD: Detect broken HTML links in the documentation as part of the pipeline (#3439) 2025-03-21 10:56:41 -04:00
build NEW FEATURE: Add SMIMEA support for BIND and deSEC (#3786) 2025-10-10 11:16:13 -04:00
commands Remove unused --depopulate flag (#3843) 2025-11-21 09:29:47 -05:00
docs FEATURE: Optionally disable spfcache.json (#3765) 2025-09-13 12:23:46 -04:00
documentation DEPS: Switch to maintained fork of shoutrrr (#3838) 2025-11-17 11:52:26 -05:00
integrationTest NEW FEATURE: Add SMIMEA support for BIND and deSEC (#3786) 2025-10-10 11:16:13 -04:00
models AKAMAIEDGEDNS: Add ALIAS and AKAMAITLC support to the Akamai Edge DNS provider (#3836) 2025-11-14 09:48:42 -05:00
pkg NEW FEATURE: Empty creds.json should not be an error (#3844) 2025-11-21 10:46:18 -05:00
providers CLOUDFLAREAPI: Skip read-only records inserted by provider (#3850) (#3852) 2025-11-24 20:28:38 -05:00
.editorconfig DOCS: expand upon concurrency (#3676) 2025-07-22 10:01:10 -04:00
.git-blame-ignore-revs Add .git-blame-ignore-revs 2025-01-03 13:19:39 -05:00
.gitattributes DOCS: Fix many minor typos (#3752) 2025-09-02 11:00:25 -04:00
.gitignore DOCS: generate smaller tables for feature matrix (2nd try) (#3589) 2025-05-29 13:53:33 -04:00
.goreleaser.yml Joker: Implement DNS Provider (#3661) 2025-08-04 16:37:20 -04:00
.linkspector.yml DOCS: Linkspector URI fixes (#3625) 2025-06-20 08:39:47 -04:00
.nvmrc CICD: Detect broken HTML links in the documentation as part of the pipeline (#3439) 2025-03-21 10:56:41 -04:00
.prettierrc Format helpers.js (#205) 2017-09-15 13:12:09 -04:00
Dockerfile Build(deps): Bump alpine from 3.22.1 to 3.22.2 (#3818) 2025-11-03 11:31:31 -05:00
go.mod Build(deps): Bump golang.org/x/crypto from 0.43.0 to 0.45.0 (#3848) 2025-11-21 12:45:31 -05:00
go.sum Build(deps): Bump golang.org/x/crypto from 0.43.0 to 0.45.0 (#3848) 2025-11-21 12:45:31 -05:00
LICENSE migrate code for github 2016-08-22 18:31:50 -06:00
main.go BUG: User-Agent should include DNSControl version (#3653) 2025-07-09 10:56:38 -04:00
OWNERS Joker: Implement DNS Provider (#3661) 2025-08-04 16:37:20 -04:00
package-lock.json Build(deps): Bump glob from 11.0.1 to 11.1.0 (#3846) 2025-11-21 12:46:12 -05:00
package.json NEW FEATURE: Add SMIMEA support for BIND and deSEC (#3786) 2025-10-10 11:16:13 -04:00
README.md Joker: Implement DNS Provider (#3661) 2025-08-04 16:37:20 -04:00
SECURITY.md DOCS: Fix many small typos (#1794) 2022-10-30 13:56:45 -04:00
staticcheck.conf CHORE: Satisfy Staticcheck and remove unused code (#2331) 2023-05-08 16:49:26 -04:00

README.md

DNSControl

StackExchange/dnscontrol/build Google Group PkgGoDev

DNSControl is a system for maintaining DNS zones. It has two parts: a domain specific language (DSL) for describing DNS zones plus software that processes the DSL and pushes the resulting zones to DNS providers such as Route53, Cloudflare, and Gandi. It can send the same DNS records to multiple providers. It even generates the most beautiful BIND zone files ever. It runs anywhere Go runs (Linux, macOS, Windows). The provider model is extensible, so more providers can be added.

Currently supported DNS providers:

  • AdGuard Home
  • Akamai Edge DNS
  • AutoDNS
  • AWS Route 53
  • AXFR+DDNS
  • Azure DNS
  • Azure Private DNS
  • BIND
  • Bunny DNS
  • CentralNic Reseller (CNR) - formerly RRPProxy
  • Cloudflare
  • ClouDNS
  • CSC Global (Experimental)
  • deSEC
  • DigitalOcean
  • DNS Made Easy
  • DNSimple
  • Domainnameshop (Domeneshop)
  • Exoscale
  • Fortigate
  • Gandi
  • Gcore
  • Google DNS
  • Hetzner
  • HEXONET
  • hosting.de
  • Huawei Cloud DNS
  • Hurricane Electric DNS
  • INWX
  • Joker
  • Linode
  • Loopia
  • LuaDNS
  • Microsoft Windows Server DNS Server
  • Mythic Beasts
  • Name.com
  • Namecheap
  • Netcup
  • Netlify
  • NS1
  • Oracle Cloud
  • OVH
  • Packetframe
  • Porkbun
  • PowerDNS
  • Realtime Register
  • RWTH DNS-Admin
  • Sakura Cloud
  • SoftLayer
  • TransIP
  • Vultr

Currently supported Domain Registrars:

  • AWS Route 53
  • CentralNic Reseller (CNR) - formerly RRPProxy
  • CSC Global
  • DNSimple
  • DNSOVERHTTPS
  • Dynadot
  • easyname
  • Gandi
  • HEXONET
  • hosting.de
  • Internet.bs
  • INWX
  • Loopia
  • Name.com
  • Namecheap
  • OpenSRS
  • OVH
  • Porkbun
  • Realtime Register

At Stack Overflow, we use this system to manage hundreds of domains and subdomains across multiple registrars and DNS providers.

You can think of it as a DNS compiler. The configuration files are written in a DSL that looks a lot like JavaScript. It is compiled to an intermediate representation (IR). Compiler back-ends use the IR to update your DNS zones on services such as Route53, Cloudflare, and Gandi, or systems such as BIND.

An Example

dnsconfig.js:

// define our registrar and providers
var REG_NAMECOM = NewRegistrar("name.com");
var r53 = NewDnsProvider("r53")

D("example.com", REG_NAMECOM, DnsProvider(r53),
  A("@", "1.2.3.4"),
  CNAME("www","@"),
  MX("@",5,"mail.myserver.com."),
  A("test", "5.6.7.8")
)

Running dnscontrol preview will talk to the providers (here name.com as registrar and route 53 as the dns host), and determine what changes need to be made.

Running dnscontrol push will make those changes with the provider and my dns records will be correctly updated.

The easiest way to run DNSControl is to use the Docker container:

docker run --rm -it -v "$(pwd):/dns"  ghcr.io/stackexchange/dnscontrol preview

See Getting Started page on documentation site to get started!

Benefits

  • Less error-prone than editing a BIND zone file.
  • More reproducible than clicking buttons on a web portal.
  • Easily switch between DNS providers: The DNSControl language is vendor-agnostic. If you use it to maintain your DNS zone records, you can switch between DNS providers easily. In fact, DNSControl will upload your DNS records to multiple providers, which means you can test one while switching to another. We've switched providers 3 times in three years and we've never lost a DNS record.
  • Apply CI/CD principles to DNS! At StackOverflow we maintain our DNSControl configurations in Git and use our CI system to roll out changes. Keeping DNS information in a VCS means we have full history. Using CI enables us to include unit-tests and system-tests. Remember when you forgot to include a "." at the end of an MX record? We haven't had that problem since we included a test to make sure Tom doesn't make that mistake... again.
  • Adopt (GitOps) PR-based updates. Allow developers to send updates as PRs, which you can review before you approve.
  • Variables save time! Assign an IP address to a constant and use the variable name throughout the file. Need to change the IP address globally? Just change the variable and "recompile."
  • Macros! Define your SPF records, MX records, or other repeated data once and re-use them for all domains.
  • Control Cloudflare from a single source of truth. Enable/disable Cloudflare proxying (the "orange cloud" button) directly from your DNSControl files.
  • Keep similar domains in sync with transforms and other features. If one domain is supposed to be a filtered version of another, this is easy to set up.
  • It is extendable! All the DNS providers are written as plugins. Writing new plugins is very easy.

Installation

DNSControl can be installed via packages for macOS, Linux and Windows, or from source code. See the official instructions.

Via GitHub Actions (GHA)

See dnscontrol-action or gacts/install-dnscontrol.

Deprecation warnings (updated 2024-03-25)

  • REV() will switch from RFC2317 to RFC4183 in v5.0. This is a breaking change. Warnings are output if your configuration is affected. No date has been announced for v5.0. See https://docs.dnscontrol.org/language-reference/top-level-functions/revcompat
  • NAMEDOTCOM and SOFTLAYER need maintainers! These providers have no maintainer. Maintainers respond to PRs and fix bugs in a timely manner, and try to stay on top of protocol changes.

More info at our website

The website: https://docs.dnscontrol.org/

The getting started guide: https://docs.dnscontrol.org/getting-started/getting-started

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