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<h1 id="oracle-cloud-infrastructure">Oracle Cloud Infrastructure<a class="headerlink" href="#oracle-cloud-infrastructure" title="Permanent link">&para;</a></h1>
<p>This tutorial describes how to setup ExternalDNS for usage within a Kubernetes cluster using OCI DNS.</p>
<p>Make sure to use the latest version of ExternalDNS for this tutorial.</p>
<h2 id="creating-an-oci-dns-zone">Creating an OCI DNS Zone<a class="headerlink" href="#creating-an-oci-dns-zone" title="Permanent link">&para;</a></h2>
<p>Create a DNS zone which will contain the managed DNS records. Let&rsquo;s use<br />
<code>example.com</code> as a reference here. Make note of the OCID of the compartment<br />
in which you created the zone; you&rsquo;ll need to provide that later.</p>
<p>For more information about OCI DNS see the documentation <a href="https://docs.cloud.oracle.com/iaas/Content/DNS/Concepts/dnszonemanagement.htm">here</a>.</p>
<h2 id="using-private-oci-dns-zones">Using Private OCI DNS Zones<a class="headerlink" href="#using-private-oci-dns-zones" title="Permanent link">&para;</a></h2>
<p>By default, the ExternalDNS OCI provider is configured to use Global OCI<br />
DNS Zones. If you want to use Private OCI DNS Zones, add the following<br />
argument to the ExternalDNS controller:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>--oci-zone-scope<span class="o">=</span>PRIVATE
</code></pre></div>
<p>To use both Global and Private OCI DNS Zones, set the OCI Zone Scope to be<br />
empty:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>--oci-zone-scope<span class="o">=</span>
</code></pre></div>
<h2 id="deploy-externaldns">Deploy ExternalDNS<a class="headerlink" href="#deploy-externaldns" title="Permanent link">&para;</a></h2>
<p>Connect your <code>kubectl</code> client to the cluster you want to test ExternalDNS with.<br />
The OCI provider supports two authentication options: key-based and instance<br />
principals.</p>
<h3 id="key-based">Key-based<a class="headerlink" href="#key-based" title="Permanent link">&para;</a></h3>
<p>We first need to create a config file containing the information needed to connect with the OCI API.</p>
<p>Create a new file (oci.yaml) and modify the contents to match the example<br />
below. Be sure to adjust the values to match your own credentials, and the OCID<br />
of the compartment containing the zone:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="nt">auth</span><span class="p">:</span>
<a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="w"> </span><span class="nt">region</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">us-phoenix-1</span>
<a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="w"> </span><span class="nt">tenancy</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ocid1.tenancy.oc1...</span>
<a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="w"> </span><span class="nt">user</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ocid1.user.oc1...</span>
<a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="w"> </span><span class="nt">key</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">|</span>
<a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a><span class="w"> </span><span class="no">-----BEGIN RSA PRIVATE KEY-----</span>
<a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a><span class="w"> </span><span class="no">-----END RSA PRIVATE KEY-----</span>
<a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a><span class="w"> </span><span class="nt">fingerprint</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">af:81:71:8e...</span>
<a id="__codelineno-2-9" name="__codelineno-2-9" href="#__codelineno-2-9"></a><span class="w"> </span><span class="c1"># Omit if there is not a password for the key</span>
<a id="__codelineno-2-10" name="__codelineno-2-10" href="#__codelineno-2-10"></a><span class="w"> </span><span class="nt">passphrase</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Tx1jRk...</span>
<a id="__codelineno-2-11" name="__codelineno-2-11" href="#__codelineno-2-11"></a><span class="nt">compartment</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ocid1.compartment.oc1...</span>
</code></pre></div>
<p>Create a secret using the config file above:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a>kubectl<span class="w"> </span>create<span class="w"> </span>secret<span class="w"> </span>generic<span class="w"> </span>external-dns-config<span class="w"> </span>--from-file<span class="o">=</span>oci.yaml
</code></pre></div>
<h3 id="oci-iam-instance-principal">OCI IAM Instance Principal<a class="headerlink" href="#oci-iam-instance-principal" title="Permanent link">&para;</a></h3>
<p>If you&rsquo;re running ExternalDNS within OCI, you can use OCI IAM instance<br />
principals to authenticate with OCI. This obviates the need to create the<br />
secret with your credentials. You&rsquo;ll need to ensure an OCI IAM policy exists<br />
with a statement granting the <code>manage dns</code> permission on zones and records in<br />
the target compartment to the dynamic group covering your instance running<br />
ExternalDNS.<br />
E.g.:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="n">Allow</span><span class="w"> </span><span class="k">dynamic</span><span class="o">-</span><span class="k">group</span><span class="w"> </span><span class="o">&lt;</span><span class="k">dynamic</span><span class="o">-</span><span class="k">group</span><span class="o">-</span><span class="n">name</span><span class="o">&gt;</span><span class="w"> </span><span class="k">to</span><span class="w"> </span><span class="n">manage</span><span class="w"> </span><span class="n">dns</span><span class="w"> </span><span class="k">in</span><span class="w"> </span><span class="n">compartment</span><span class="w"> </span><span class="n">id</span><span class="w"> </span><span class="o">&lt;</span><span class="n">target</span><span class="o">-</span><span class="n">compartment</span><span class="o">-</span><span class="n">OCID</span><span class="o">&gt;</span>
</code></pre></div>
<p>You&rsquo;ll also need to add the <code>--oci-auth-instance-principal</code> flag to enable<br />
this type of authentication. Finally, you&rsquo;ll need to add the<br />
<code>--oci-compartment-ocid=ocid1.compartment.oc1...</code> flag to provide the OCID of<br />
the compartment containing the zone to be managed.</p>
<p>For more information about OCI IAM instance principals, see the documentation <a href="https://docs.cloud.oracle.com/iaas/Content/Identity/Reference/dnspolicyreference.htm">here</a>.<br />
For more information about OCI IAM policy details for the DNS service, see the documentation <a href="https://docs.cloud.oracle.com/iaas/Content/Identity/Tasks/callingservicesfrominstances.htm">here</a>.</p>
<h3 id="oci-iam-workload-identity">OCI IAM Workload Identity<a class="headerlink" href="#oci-iam-workload-identity" title="Permanent link">&para;</a></h3>
<p>If you&rsquo;re running ExternalDNS within an OCI Container Engine for Kubernetes (OKE) cluster,<br />
you can use OCI IAM Workload Identity to authenticate with OCI. You&rsquo;ll need to ensure an<br />
OCI IAM policy exists with a statement granting the <code>manage dns</code> permission on zones and<br />
records in the target compartment covering your OKE cluster running ExternalDNS.<br />
E.g.:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="n">Allow</span><span class="w"> </span><span class="k">any</span><span class="o">-</span><span class="k">user</span><span class="w"> </span><span class="k">to</span><span class="w"> </span><span class="n">manage</span><span class="w"> </span><span class="n">dns</span><span class="w"> </span><span class="k">in</span><span class="w"> </span><span class="n">compartment</span><span class="w"> </span><span class="o">&lt;</span><span class="n">compartment</span><span class="o">-</span><span class="n">name</span><span class="o">&gt;</span><span class="w"> </span><span class="k">where</span><span class="w"> </span><span class="k">all</span><span class="w"> </span><span class="err">{</span><span class="n">request</span><span class="p">.</span><span class="n">principal</span><span class="p">.</span><span class="k">type</span><span class="o">=</span><span class="s1">&#39;workload&#39;</span><span class="p">,</span><span class="n">request</span><span class="p">.</span><span class="n">principal</span><span class="p">.</span><span class="n">cluster_id</span><span class="o">=</span><span class="s1">&#39;&lt;cluster-ocid&gt;&#39;</span><span class="p">,</span><span class="n">request</span><span class="p">.</span><span class="n">principal</span><span class="p">.</span><span class="n">service_account</span><span class="o">=</span><span class="s1">&#39;external-dns&#39;</span><span class="err">}</span>
</code></pre></div>
<p>You&rsquo;ll also need to create a new file (oci.yaml) and modify the contents to match the example<br />
below. Be sure to adjust the values to match your region and the OCID<br />
of the compartment containing the zone:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="nt">auth</span><span class="p">:</span>
<a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="w"> </span><span class="nt">region</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">us-phoenix-1</span>
<a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a><span class="w"> </span><span class="nt">useWorkloadIdentity</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span>
<a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="nt">compartment</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ocid1.compartment.oc1...</span>
</code></pre></div>
<p>Create a secret using the config file above:</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a>kubectl<span class="w"> </span>create<span class="w"> </span>secret<span class="w"> </span>generic<span class="w"> </span>external-dns-config<span class="w"> </span>--from-file<span class="o">=</span>oci.yaml
</code></pre></div>
<h2 id="manifest-for-clusters-with-rbac-enabled">Manifest (for clusters with RBAC enabled)<a class="headerlink" href="#manifest-for-clusters-with-rbac-enabled" title="Permanent link">&para;</a></h2>
<p>Apply the following manifest to deploy ExternalDNS.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">v1</span>
<a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ServiceAccount</span>
<a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-5" name="__codelineno-8-5" href="#__codelineno-8-5"></a><span class="nn">---</span>
<a id="__codelineno-8-6" name="__codelineno-8-6" href="#__codelineno-8-6"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rbac.authorization.k8s.io/v1</span>
<a id="__codelineno-8-7" name="__codelineno-8-7" href="#__codelineno-8-7"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ClusterRole</span>
<a id="__codelineno-8-8" name="__codelineno-8-8" href="#__codelineno-8-8"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-8-9" name="__codelineno-8-9" href="#__codelineno-8-9"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-10" name="__codelineno-8-10" href="#__codelineno-8-10"></a><span class="nt">rules</span><span class="p">:</span>
<a id="__codelineno-8-11" name="__codelineno-8-11" href="#__codelineno-8-11"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">apiGroups</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-12" name="__codelineno-8-12" href="#__codelineno-8-12"></a><span class="w"> </span><span class="nt">resources</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;services&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;endpoints&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;pods&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-13" name="__codelineno-8-13" href="#__codelineno-8-13"></a><span class="w"> </span><span class="nt">verbs</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;get&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;watch&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;list&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-14" name="__codelineno-8-14" href="#__codelineno-8-14"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">apiGroups</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;extensions&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;networking.k8s.io&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-15" name="__codelineno-8-15" href="#__codelineno-8-15"></a><span class="w"> </span><span class="nt">resources</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;ingresses&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-16" name="__codelineno-8-16" href="#__codelineno-8-16"></a><span class="w"> </span><span class="nt">verbs</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;get&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;watch&quot;</span><span class="p p-Indicator">,</span><span class="s">&quot;list&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-17" name="__codelineno-8-17" href="#__codelineno-8-17"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">apiGroups</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-18" name="__codelineno-8-18" href="#__codelineno-8-18"></a><span class="w"> </span><span class="nt">resources</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;nodes&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-19" name="__codelineno-8-19" href="#__codelineno-8-19"></a><span class="w"> </span><span class="nt">verbs</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">&quot;list&quot;</span><span class="p p-Indicator">]</span>
<a id="__codelineno-8-20" name="__codelineno-8-20" href="#__codelineno-8-20"></a><span class="nn">---</span>
<a id="__codelineno-8-21" name="__codelineno-8-21" href="#__codelineno-8-21"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rbac.authorization.k8s.io/v1</span>
<a id="__codelineno-8-22" name="__codelineno-8-22" href="#__codelineno-8-22"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ClusterRoleBinding</span>
<a id="__codelineno-8-23" name="__codelineno-8-23" href="#__codelineno-8-23"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-8-24" name="__codelineno-8-24" href="#__codelineno-8-24"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns-viewer</span>
<a id="__codelineno-8-25" name="__codelineno-8-25" href="#__codelineno-8-25"></a><span class="nt">roleRef</span><span class="p">:</span>
<a id="__codelineno-8-26" name="__codelineno-8-26" href="#__codelineno-8-26"></a><span class="w"> </span><span class="nt">apiGroup</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rbac.authorization.k8s.io</span>
<a id="__codelineno-8-27" name="__codelineno-8-27" href="#__codelineno-8-27"></a><span class="w"> </span><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ClusterRole</span>
<a id="__codelineno-8-28" name="__codelineno-8-28" href="#__codelineno-8-28"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-29" name="__codelineno-8-29" href="#__codelineno-8-29"></a><span class="nt">subjects</span><span class="p">:</span>
<a id="__codelineno-8-30" name="__codelineno-8-30" href="#__codelineno-8-30"></a><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ServiceAccount</span>
<a id="__codelineno-8-31" name="__codelineno-8-31" href="#__codelineno-8-31"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-32" name="__codelineno-8-32" href="#__codelineno-8-32"></a><span class="w"> </span><span class="nt">namespace</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">default</span>
<a id="__codelineno-8-33" name="__codelineno-8-33" href="#__codelineno-8-33"></a><span class="nn">---</span>
<a id="__codelineno-8-34" name="__codelineno-8-34" href="#__codelineno-8-34"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">apps/v1</span>
<a id="__codelineno-8-35" name="__codelineno-8-35" href="#__codelineno-8-35"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Deployment</span>
<a id="__codelineno-8-36" name="__codelineno-8-36" href="#__codelineno-8-36"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-8-37" name="__codelineno-8-37" href="#__codelineno-8-37"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-38" name="__codelineno-8-38" href="#__codelineno-8-38"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-8-39" name="__codelineno-8-39" href="#__codelineno-8-39"></a><span class="w"> </span><span class="nt">strategy</span><span class="p">:</span>
<a id="__codelineno-8-40" name="__codelineno-8-40" href="#__codelineno-8-40"></a><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Recreate</span>
<a id="__codelineno-8-41" name="__codelineno-8-41" href="#__codelineno-8-41"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-8-42" name="__codelineno-8-42" href="#__codelineno-8-42"></a><span class="w"> </span><span class="nt">matchLabels</span><span class="p">:</span>
<a id="__codelineno-8-43" name="__codelineno-8-43" href="#__codelineno-8-43"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-44" name="__codelineno-8-44" href="#__codelineno-8-44"></a><span class="w"> </span><span class="nt">template</span><span class="p">:</span>
<a id="__codelineno-8-45" name="__codelineno-8-45" href="#__codelineno-8-45"></a><span class="w"> </span><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-8-46" name="__codelineno-8-46" href="#__codelineno-8-46"></a><span class="w"> </span><span class="nt">labels</span><span class="p">:</span>
<a id="__codelineno-8-47" name="__codelineno-8-47" href="#__codelineno-8-47"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-48" name="__codelineno-8-48" href="#__codelineno-8-48"></a><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-8-49" name="__codelineno-8-49" href="#__codelineno-8-49"></a><span class="w"> </span><span class="nt">serviceAccountName</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-50" name="__codelineno-8-50" href="#__codelineno-8-50"></a><span class="w"> </span><span class="nt">containers</span><span class="p">:</span>
<a id="__codelineno-8-51" name="__codelineno-8-51" href="#__codelineno-8-51"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns</span>
<a id="__codelineno-8-52" name="__codelineno-8-52" href="#__codelineno-8-52"></a><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">registry.k8s.io/external-dns/external-dns:v0.15.1</span>
<a id="__codelineno-8-53" name="__codelineno-8-53" href="#__codelineno-8-53"></a><span class="w"> </span><span class="nt">args</span><span class="p">:</span>
<a id="__codelineno-8-54" name="__codelineno-8-54" href="#__codelineno-8-54"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--source=service</span>
<a id="__codelineno-8-55" name="__codelineno-8-55" href="#__codelineno-8-55"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--source=ingress</span>
<a id="__codelineno-8-56" name="__codelineno-8-56" href="#__codelineno-8-56"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--provider=oci</span>
<a id="__codelineno-8-57" name="__codelineno-8-57" href="#__codelineno-8-57"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--policy=upsert-only</span><span class="w"> </span><span class="c1"># prevent ExternalDNS from deleting any records, omit to enable full synchronization</span>
<a id="__codelineno-8-58" name="__codelineno-8-58" href="#__codelineno-8-58"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--txt-owner-id=my-identifier</span>
<a id="__codelineno-8-59" name="__codelineno-8-59" href="#__codelineno-8-59"></a><span class="w"> </span><span class="c1"># Specifies the OCI DNS Zone scope, defaults to GLOBAL.</span>
<a id="__codelineno-8-60" name="__codelineno-8-60" href="#__codelineno-8-60"></a><span class="w"> </span><span class="c1"># May be GLOBAL, PRIVATE, or an empty value to specify both GLOBAL and PRIVATE OCI DNS Zones</span>
<a id="__codelineno-8-61" name="__codelineno-8-61" href="#__codelineno-8-61"></a><span class="w"> </span><span class="c1"># - --oci-zone-scope=GLOBAL</span>
<a id="__codelineno-8-62" name="__codelineno-8-62" href="#__codelineno-8-62"></a><span class="w"> </span><span class="c1"># Specifies the zone cache duration, defaults to 0s. If set to 0s, the zone cache is disabled.</span>
<a id="__codelineno-8-63" name="__codelineno-8-63" href="#__codelineno-8-63"></a><span class="w"> </span><span class="c1"># Use of zone caching is recommended to reduce the amount of requests sent to OCI DNS.</span>
<a id="__codelineno-8-64" name="__codelineno-8-64" href="#__codelineno-8-64"></a><span class="w"> </span><span class="c1"># - --oci-zones-cache-duration=0s</span>
<a id="__codelineno-8-65" name="__codelineno-8-65" href="#__codelineno-8-65"></a><span class="w"> </span><span class="nt">volumeMounts</span><span class="p">:</span>
<a id="__codelineno-8-66" name="__codelineno-8-66" href="#__codelineno-8-66"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">config</span>
<a id="__codelineno-8-67" name="__codelineno-8-67" href="#__codelineno-8-67"></a><span class="w"> </span><span class="nt">mountPath</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/etc/kubernetes/</span>
<a id="__codelineno-8-68" name="__codelineno-8-68" href="#__codelineno-8-68"></a><span class="w"> </span><span class="nt">volumes</span><span class="p">:</span>
<a id="__codelineno-8-69" name="__codelineno-8-69" href="#__codelineno-8-69"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">config</span>
<a id="__codelineno-8-70" name="__codelineno-8-70" href="#__codelineno-8-70"></a><span class="w"> </span><span class="nt">secret</span><span class="p">:</span>
<a id="__codelineno-8-71" name="__codelineno-8-71" href="#__codelineno-8-71"></a><span class="w"> </span><span class="nt">secretName</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">external-dns-config</span>
</code></pre></div>
<h2 id="verify-externaldns-works-service-example">Verify ExternalDNS works (Service example)<a class="headerlink" href="#verify-externaldns-works-service-example" title="Permanent link">&para;</a></h2>
<p>Create the following sample application to test that ExternalDNS works.</p>
<blockquote>
<p>For services ExternalDNS will look for the annotation <code>external-dns.alpha.kubernetes.io/hostname</code> on the service and use the corresponding value.</p>
</blockquote>
<div class="highlight"><pre><span></span><code><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">v1</span>
<a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Service</span>
<a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-5" name="__codelineno-9-5" href="#__codelineno-9-5"></a><span class="w"> </span><span class="nt">annotations</span><span class="p">:</span>
<a id="__codelineno-9-6" name="__codelineno-9-6" href="#__codelineno-9-6"></a><span class="w"> </span><span class="nt">external-dns.alpha.kubernetes.io/hostname</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">example.com</span>
<a id="__codelineno-9-7" name="__codelineno-9-7" href="#__codelineno-9-7"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-9-8" name="__codelineno-9-8" href="#__codelineno-9-8"></a><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">LoadBalancer</span>
<a id="__codelineno-9-9" name="__codelineno-9-9" href="#__codelineno-9-9"></a><span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
<a id="__codelineno-9-10" name="__codelineno-9-10" href="#__codelineno-9-10"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">port</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
<a id="__codelineno-9-11" name="__codelineno-9-11" href="#__codelineno-9-11"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">http</span>
<a id="__codelineno-9-12" name="__codelineno-9-12" href="#__codelineno-9-12"></a><span class="w"> </span><span class="nt">targetPort</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
<a id="__codelineno-9-13" name="__codelineno-9-13" href="#__codelineno-9-13"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-9-14" name="__codelineno-9-14" href="#__codelineno-9-14"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-15" name="__codelineno-9-15" href="#__codelineno-9-15"></a><span class="nn">---</span>
<a id="__codelineno-9-16" name="__codelineno-9-16" href="#__codelineno-9-16"></a><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">apps/v1</span>
<a id="__codelineno-9-17" name="__codelineno-9-17" href="#__codelineno-9-17"></a><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">Deployment</span>
<a id="__codelineno-9-18" name="__codelineno-9-18" href="#__codelineno-9-18"></a><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-9-19" name="__codelineno-9-19" href="#__codelineno-9-19"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-20" name="__codelineno-9-20" href="#__codelineno-9-20"></a><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-9-21" name="__codelineno-9-21" href="#__codelineno-9-21"></a><span class="w"> </span><span class="nt">selector</span><span class="p">:</span>
<a id="__codelineno-9-22" name="__codelineno-9-22" href="#__codelineno-9-22"></a><span class="w"> </span><span class="nt">matchLabels</span><span class="p">:</span>
<a id="__codelineno-9-23" name="__codelineno-9-23" href="#__codelineno-9-23"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-24" name="__codelineno-9-24" href="#__codelineno-9-24"></a><span class="w"> </span><span class="nt">template</span><span class="p">:</span>
<a id="__codelineno-9-25" name="__codelineno-9-25" href="#__codelineno-9-25"></a><span class="w"> </span><span class="nt">metadata</span><span class="p">:</span>
<a id="__codelineno-9-26" name="__codelineno-9-26" href="#__codelineno-9-26"></a><span class="w"> </span><span class="nt">labels</span><span class="p">:</span>
<a id="__codelineno-9-27" name="__codelineno-9-27" href="#__codelineno-9-27"></a><span class="w"> </span><span class="nt">app</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-28" name="__codelineno-9-28" href="#__codelineno-9-28"></a><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
<a id="__codelineno-9-29" name="__codelineno-9-29" href="#__codelineno-9-29"></a><span class="w"> </span><span class="nt">containers</span><span class="p">:</span>
<a id="__codelineno-9-30" name="__codelineno-9-30" href="#__codelineno-9-30"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-31" name="__codelineno-9-31" href="#__codelineno-9-31"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<a id="__codelineno-9-32" name="__codelineno-9-32" href="#__codelineno-9-32"></a><span class="w"> </span><span class="nt">ports</span><span class="p">:</span>
<a id="__codelineno-9-33" name="__codelineno-9-33" href="#__codelineno-9-33"></a><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">containerPort</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
<a id="__codelineno-9-34" name="__codelineno-9-34" href="#__codelineno-9-34"></a><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">http</span>
</code></pre></div>
<p>Apply the manifest above and wait roughly two minutes and check that a corresponding DNS record for your service was created.</p>
<div class="highlight"><pre><span></span><code><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a>kubectl<span class="w"> </span>apply<span class="w"> </span>-f<span class="w"> </span>nginx.yaml
</code></pre></div>
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