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Set up ExternalDNS for Azure Private DNS
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Setting up external-dns for BlueCat
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Setting up ExternalDNS for Services on Cloudflare
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Setting up External DNS with Contour
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<li class="md-nav__item">
|
|
<a href="../../tutorials/coredns/" class="md-nav__link">
|
|
Setting up ExternalDNS for CoreDNS with minikube
|
|
</a>
|
|
</li>
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/designate/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on OpenStack Designate
|
|
</a>
|
|
</li>
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/digitalocean/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on DigitalOcean
|
|
</a>
|
|
</li>
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/dnsimple/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on DNSimple
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
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|
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|
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|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/dyn/" class="md-nav__link">
|
|
Setting up ExternalDNS for Dyn
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
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|
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|
|
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|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/exoscale/" class="md-nav__link">
|
|
Setting up ExternalDNS for Exoscale
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
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|
|
|
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|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/externalname/" class="md-nav__link">
|
|
Setting up ExternalDNS for ExternalName Services
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
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|
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|
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|
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|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/gandi/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on Gandi
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/gateway-api/" class="md-nav__link">
|
|
Configuring ExternalDNS to use Gateway API Route Sources
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/gke/" class="md-nav__link">
|
|
Setting up ExternalDNS on Google Kubernetes Engine
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/gloo-proxy/" class="md-nav__link">
|
|
Configuring ExternalDNS to use the Gloo Proxy Source
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/godaddy/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on GoDaddy
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/hostport/" class="md-nav__link">
|
|
Setting up ExternalDNS for Headless Services
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/ibmcloud/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on IBMCloud
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/infoblox/" class="md-nav__link">
|
|
Setting up ExternalDNS for Infoblox
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/istio/" class="md-nav__link">
|
|
Configuring ExternalDNS to use the Istio Gateway and/or Istio Virtual Service Source
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/kong/" class="md-nav__link">
|
|
Configuring ExternalDNS to use the Kong TCPIngress Source
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/kops-dns-controller/" class="md-nav__link">
|
|
kOps dns-controller compatibility mode
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/kube-ingress-aws/" class="md-nav__link">
|
|
Using ExternalDNS with kube-ingress-aws-controller
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/linode/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on Linode
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/nginx-ingress/" class="md-nav__link">
|
|
Setting up ExternalDNS on GKE with nginx-ingress-controller
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/nodes/" class="md-nav__link">
|
|
Configuring ExternalDNS to use Cluster Nodes as Source
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/ns-record/" class="md-nav__link">
|
|
Creating NS record with CRD source
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/ns1/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on NS1
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/openshift/" class="md-nav__link">
|
|
Configuring ExternalDNS to use the OpenShift Route Source
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/oracle/" class="md-nav__link">
|
|
Setting up ExternalDNS for Oracle Cloud Infrastructure (OCI)
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/ovh/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on OVH
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/pdns/" class="md-nav__link">
|
|
Setting up ExternalDNS for PowerDNS
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/plural/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on Plural
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/public-private-route53/" class="md-nav__link">
|
|
Setting up ExternalDNS using the same domain for public and private Route53 zones
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/rcodezero/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on RcodeZero
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/rdns/" class="md-nav__link">
|
|
Setting up ExternalDNS for RancherDNS(RDNS) with kubernetes
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/rfc2136/" class="md-nav__link">
|
|
Configuring RFC2136 provider
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/scaleway/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on Scaleway
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/security-context/" class="md-nav__link">
|
|
Running ExternalDNS with limited privileges
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/tencentcloud/" class="md-nav__link">
|
|
Setting up ExternalDNS for Tencent Cloud
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/transip/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on TransIP
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/ultradns/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on UltraDNS
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/vinyldns/" class="md-nav__link">
|
|
Setting up ExternalDNS for VinylDNS
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../tutorials/vultr/" class="md-nav__link">
|
|
Setting up ExternalDNS for Services on Vultr
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3" type="checkbox" id="__nav_3" >
|
|
|
|
|
|
|
|
|
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|
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|
|
|
|
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_3">
|
|
Advanced Topics
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" aria-label="Advanced Topics" data-md-level="1">
|
|
<label class="md-nav__title" for="__nav_3">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Advanced Topics
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../initial-design/" class="md-nav__link">
|
|
Initial Design
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../ttl/" class="md-nav__link">
|
|
TTL
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
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<li class="md-nav__item md-nav__item--active md-nav__item--nested">
|
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_4" type="checkbox" id="__nav_4" checked>
|
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|
|
<label class="md-nav__link" for="__nav_4">
|
|
Contributing
|
|
<span class="md-nav__icon md-icon"></span>
|
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</label>
|
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|
|
<nav class="md-nav" aria-label="Contributing" data-md-level="1">
|
|
<label class="md-nav__title" for="__nav_4">
|
|
<span class="md-nav__icon md-icon"></span>
|
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Contributing
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
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|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../CONTRIBUTING/" class="md-nav__link">
|
|
Kubernetes Contributions
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
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<a href="../../release/" class="md-nav__link">
|
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Release
|
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</a>
|
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</li>
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|
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<li class="md-nav__item">
|
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<a href="../chart/" class="md-nav__link">
|
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Helm Chart
|
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</a>
|
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</li>
|
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|
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|
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|
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|
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<li class="md-nav__item">
|
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<a href="../crd-source/" class="md-nav__link">
|
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CRD Source
|
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</a>
|
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</li>
|
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<li class="md-nav__item md-nav__item--active">
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<input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
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|
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<a href="./" class="md-nav__link md-nav__link--active">
|
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Quick Start
|
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</a>
|
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</li>
|
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|
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<li class="md-nav__item">
|
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<a href="../sources-and-providers/" class="md-nav__link">
|
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Sources and Providers
|
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</a>
|
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</li>
|
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|
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|
|
</ul>
|
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</nav>
|
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" >
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<label class="md-nav__link" for="__nav_5">
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About
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" aria-label="About" data-md-level="1">
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<label class="md-nav__title" for="__nav_5">
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<span class="md-nav__icon md-icon"></span>
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About
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<h1 id="quick-start">Quick Start<a class="headerlink" href="#quick-start" title="Permanent link">¶</a></h1>
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<li><a href="https://git-scm.com/downloads">Git</a></li>
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<li><a href="https://golang.org/dl/">Go 1.18+</a></li>
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<p>Compile and run locally against a remote k8s cluster.<br />
|
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<div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>git clone https://github.com/kubernetes-sigs/external-dns.git <span class="o">&&</span> <span class="nb">cd</span> external-dns
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<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>make build
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<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="c1"># login to remote k8s cluster</span>
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<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>./build/external-dns --source<span class="o">=</span>service --provider<span class="o">=</span>inmemory --once
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</code></pre></div></p>
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<p>Run linting, unit tests, and coverage report.<br />
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<div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>make lint
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<a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a>make <span class="nb">test</span>
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<a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a>make cover-html
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</code></pre></div></p>
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<p>Build container image.<br />
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<div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a>make build.docker
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</code></pre></div></p>
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<h1 id="design">Design<a class="headerlink" href="#design" title="Permanent link">¶</a></h1>
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<p>ExternalDNS’s sources of DNS records live in package <a href="../../source">source</a>. They implement the <code>Source</code> interface that has a single method <code>Endpoints</code> which returns the represented source’s objects converted to <code>Endpoints</code>. Endpoints are just a tuple of DNS name and target where target can be an IP or another hostname.</p>
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<p>For example, the <code>ServiceSource</code> returns all Services converted to <code>Endpoints</code> where the hostname is the value of the <code>external-dns.alpha.kubernetes.io/hostname</code> annotation and the target is the IP of the load balancer or where the hostname is the value of the <code>external-dns.alpha.kubernetes.io/internal-hostname</code> annotation and the target is the IP of the service CLusterIP.</p>
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<p>This list of endpoints is passed to the <a href="../../plan">Plan</a> which determines the difference between the current DNS records and the desired list of <code>Endpoints</code>.</p>
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<p>Once the difference has been figured out the list of intended changes is passed to a <code>Registry</code> which live in the <a href="../../registry">registry</a> package. The registry is a wrapper and access point to DNS provider. Registry implements the ownership concept by marking owned records and filtering out records not owned by ExternalDNS before passing them to DNS provider.</p>
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<p>The <a href="../../provider">provider</a> is the adapter to the DNS provider, e.g. Google Cloud DNS. It implements two methods: <code>ApplyChanges</code> to apply a set of changes filtered by <code>Registry</code> and <code>Records</code> to retrieve the current list of records from the DNS provider.</p>
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<p>The orchestration between the different components is controlled by the <a href="../../controller">controller</a>.</p>
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<p>You can pick which <code>Source</code> and <code>Provider</code> to use at runtime via the <code>--source</code> and <code>--provider</code> flags, respectively.</p>
|
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<h1 id="adding-a-dns-provider">Adding a DNS Provider<a class="headerlink" href="#adding-a-dns-provider" title="Permanent link">¶</a></h1>
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<p>A typical way to start on, e.g. a CoreDNS provider, would be to add a <code>coredns.go</code> to the providers package and implement the interface methods. Then you would have to register your provider under a name in <code>main.go</code>, e.g. <code>coredns</code>, and would be able to trigger it’s functions via setting <code>--provider=coredns</code>.</p>
|
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<p>Note, how your provider doesn’t need to know anything about where the DNS records come from, nor does it have to figure out the difference between the current and the desired state, it merely executes the actions calculated by the plan.</p>
|
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<h1 id="running-github-actions-locally">Running GitHub Actions locally<a class="headerlink" href="#running-github-actions-locally" title="Permanent link">¶</a></h1>
|
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<p>You can also extend the CI workflow which is currently implemented as GitHub Action within the <a href="https://github.com/kubernetes-sigs/external-dns/tree/HEAD/.github/workflows">workflow</a> folder.<br />
|
|
In order to test your changes before committing you can leverage <a href="https://github.com/nektos/act">act</a> to run the GitHub Action locally.</p>
|
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<p>Follow the installation instructions in the nektos/act <a href="https://github.com/nektos/act/blob/master/README.md">README.md</a>.<br />
|
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Afterwards just run <code>act</code> within the root folder of the project.</p>
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<p>For further usage of <code>act</code> refer to its documentation.</p>
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