CINXE.COM

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class="d-flex flex-column"><a class="bd-links d-flex" href=https://docs.crossplane.io/v1.18/concepts/compositions/>Compositions</a></div></div><div class="container flex-row collapse show" id=collapse-4c9a67bb><div class="d-flex flex-column"><a class="bd-links d-flex" href=https://docs.crossplane.io/v1.18/concepts/composition-revisions/>Composition Revisions</a></div></div><div class="container flex-row collapse show" id=collapse-4c9a67bb><div class="d-flex flex-column"><a class="bd-links d-flex" href=https://docs.crossplane.io/v1.18/concepts/composite-resource-definitions/>Composite Resource Definitions</a></div></div><div class="container flex-row collapse show" id=collapse-4c9a67bb><div class="d-flex flex-column"><a class="bd-links d-flex" href=https://docs.crossplane.io/v1.18/concepts/composite-resources/>Composite Resources</a></div></div><div class="container flex-row collapse show" id=collapse-4c9a67bb><div class="d-flex flex-column"><a class="bd-links d-flex" 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href=https://docs.crossplane.io/contribute/ class="d-inline-flex align-items-center">Contributing Guide</a></div></div><div class="section-container container pe-0 pt-1"><div class="container nav-container pe-0 d-flex w-100"><a class="d-flex w-100 border-0" href="https://github.com/orgs/crossplane/projects/20/views/9?pane=info" target=_blank>Crossplane Roadmap</a><div class="d-flex flex-shrink-1 sidebar-control-container align-self-center"><a href="https://github.com/orgs/crossplane/projects/20/views/9?pane=info"><svg class="flex bi"><use xlink:href="#box-arrow-up-right"/></svg></a></div></div></div></nav></div></div></aside><main class="bd-main order-1"><div class="bd-intro pt-2 ps-lg-2"><div class="d-md-flex flex-md-row-reverse align-items-center justify-content-between"><div class="mb-3 mb-md-0 d-flex"><div class="dropdown float-end bd-dropdown"><a class="btn btn-outline-secondary dropdown-toggle bd-dropdown-item text-reset" href=# role=button id=dropdownMenuLink data-bs-toggle=dropdown aria-haspopup=true aria-expanded=false>v1.18<div class="badge rounded-pill latest">Latest</div></a><div class="dropdown-menu bd-border-color bd-dropdown" aria-labelledby=dropdownMenuLink><a class="dropdown-item bd-dropdown-item" href=https://docs.crossplane.io/master/concepts/connection-details/>master</a> <a class="dropdown-item bd-dropdown-item active" aria-current=true href=https://docs.crossplane.io/v1.18/concepts/connection-details/>v1.18<div class="badge rounded-pill latest">Latest</div></a><a class="dropdown-item bd-dropdown-item" href=https://docs.crossplane.io/v1.17/concepts/connection-details/>v1.17</a> <a class="dropdown-item bd-dropdown-item" href=https://docs.crossplane.io/v1.16/concepts/connection-details/>v1.16</a></div></div></div><h1 class="bd-title mb-0" id=content>Connection Details</h1></div></div><div class="bd-toc mt-3 mb-5 my-lg-0 ps-xl-3 mb-lg-5"><button class="btn btn-link p-md-0 mb-2 mb-md-0 text-decoration-none bd-toc-toggle d-md-none" type=button data-bs-toggle=collapse data-bs-target=#tocContents aria-expanded=false aria-controls=tocContents> On this page<svg class="bi d-md-none ms-2" aria-hidden="true"><use xlink:href="#chevron-expand"/></svg></button> On this page<hr class="d-none d-md-block my-2"><div class="collapse bd-toc-collapse" id=tocContents><nav id=TableOfContents><ul class=nav><li class=nav-item><a class=nav-link href=#background>Background</a></li><li class=nav-item><a class=nav-link href=#connection-secrets-in-a-managed-resource>Connection secrets in a managed resource</a></li><li class=nav-item><a class=nav-link href=#connection-secrets-in-compositions>Connection secrets in Compositions</a><ul class=nav><li class=nav-item><a class=nav-link href=#managing-conflicting-secret-keys>Managing conflicting secret keys</a></li></ul></li><li class=nav-item><a class=nav-link href=#connection-secrets-in-composite-resource-definitions>Connection secrets in Composite Resource Definitions</a></li><li class=nav-item><a class=nav-link href=#secret-objects>Secret objects</a></li></ul></li></ul></nav><nav class=pt-3><div class=pb-2><svg class="bi" width="1em" height="1em"><use xlink:href="#pencil-square"/></svg><a target=_blank href="https://github.com/crossplane/docs/issues/new?title=[Web%20Bug]%20-%20Connection%20Details&body=%3c!--%20What%27s%20the%20problem?%20--%3e%0a%0a%0aURL:%20https://docs.crossplane.io/v1.18/concepts/connection-details/">Report a problem</a></div><div><svg class="bi" width="1em" height="1em"><use xlink:href="#github"/></svg><a href=https://github.com/crossplane/docs/tree/master/content/v1.18/concepts/connection-details.md>View page source</a></div></div></nav></div><div class="bd-content ps-lg-2 DocSearch-content">Using connection details in Crossplane requires the following components:<ul><li>Defining the <code>writeConnectionSecretToRef.name</code> in a <a href=https://docs.crossplane.io/master/concepts/claims/#claim-connection-secrets>Claim</a>.</li><li>Defining the <code>writeConnectionSecretsToNamespace</code> value in the <a href=https://docs.crossplane.io/master/concepts/compositions/#composite-resource-combined-secret>Composition</a>.</li><li>Define the <code>writeConnectionSecretToRef</code> name and namespace for each resource in the <a href=https://docs.crossplane.io/master/concepts/compositions/#composed-resource-secrets>Composition</a>.</li><li>Define the list of secret keys produced by each composed resource with in the <a href=https://docs.crossplane.io/master/concepts/compositions/>Composition</a>.</li><li>Optionally, define the <code>connectionSecretKeys</code> in a <a href=https://docs.crossplane.io/master/concepts/composite-resource-definitions/#manage-connection-secrets>CompositeResourceDefinition</a>.</li></ul><div class="admonition note d-flex flex-column mx-4 p-0"><div class=admonition-title><svg class="bi flex-shrink-0" role="img" aria-label="note:"><use xlink:href="#info"/></svg>Note</div><div class=admonition-content>This guide discusses creating Kubernetes secrets. Crossplane also supports using external secret stores like <a href=https://www.vaultproject.io/>HashiCorp Vault</a>.Read the <a href=https://docs.crossplane.io/v1.18/guides/vault-as-secret-store/>external secrets store guide</a> for more information on using Crossplane with an external secret store.</div></div><h2 id=background>Background <a class=anchor-link id=background href=#background aria-label="Link to this section: Background"></a></h2>When a <a href=https://docs.crossplane.io/master/concepts/providers/>Provider</a> creates a managed resource, the resource may generate resource-specific details. These details can include usernames, passwords or connection details like an IP address.Crossplane refers to this information as the connection details or connection secrets.The Provider defines what information to present as a connection detail from a managed resource.When a managed resource is part of a <a href=https://docs.crossplane.io/master/concepts/compositions/>Composition</a>, the Composition, <a href=https://docs.crossplane.io/master/concepts/composite-resource-definitions/>Composite Resource Definition</a> and optionally, the <a href=https://docs.crossplane.io/master/concepts/claims/>Claim</a> define what details are visible and where they’re stored.<div class="admonition note d-flex flex-column mx-4 p-0"><div class=admonition-title><svg class="bi flex-shrink-0" role="img" aria-label="note:"><use xlink:href="#info"/></svg>Note</div><div class=admonition-content>All the following examples use the same set of Compositions, CompositeResourceDefinitions and Claims.All examples rely on <a href=https://marketplace.upbound.io/providers/upbound/provider-aws-iam/>Upbound provider-aws-iam</a> to create resources.<div class="accordion mb-3" id=reference-composition-729-Parent><div class=accordion-item><h2 class=accordion-header id=reference-composition-729><button class="accordion-button collapsed" type=button data-bs-toggle=collapse data-bs-target=#reference-composition-729-Content aria-expanded=false aria-controls=reference-composition-729-Content> Reference Composition</button></h2><div id=reference-composition-729-Content class="accordion-collapse collapse" aria-labelledby=reference-composition-729 data-bs-parent=#reference-composition-729-Parent><div class="accordion-body rounded-bottom"><div class=highlight><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-0-1> 1</a>apiVersion: apiextensions.crossplane.io/v1 <a class=lnlinks href=#hl-0-2> 2</a>kind: Composition <a class=lnlinks href=#hl-0-3> 3</a>metadata: <a class=lnlinks href=#hl-0-4> 4</a> name: xsecrettest.example.org <a class=lnlinks href=#hl-0-5> 5</a>spec: <a class=lnlinks href=#hl-0-6> 6</a> writeConnectionSecretsToNamespace: other-namespace <a class=lnlinks href=#hl-0-7> 7</a> compositeTypeRef: <a class=lnlinks href=#hl-0-8> 8</a> apiVersion: example.org/v1alpha1 <a class=lnlinks href=#hl-0-9> 9</a> kind: XSecretTest <a class=lnlinks href=#hl-0-10>10</a> mode: Pipeline <a class=lnlinks href=#hl-0-11>11</a> pipeline: <a class=lnlinks href=#hl-0-12>12</a> - step: patch-and-transform <a class=lnlinks href=#hl-0-13>13</a> functionRef: <a class=lnlinks href=#hl-0-14>14</a> name: function-patch-and-transform <a class=lnlinks href=#hl-0-15>15</a> input: <a class=lnlinks href=#hl-0-16>16</a> apiVersion: pt.fn.crossplane.io/v1beta1 <a class=lnlinks href=#hl-0-17>17</a> kind: Resources <a class=lnlinks href=#hl-0-18>18</a> resources: <a class=lnlinks href=#hl-0-19>19</a> - name: key <a class=lnlinks href=#hl-0-20>20</a> base: <a class=lnlinks href=#hl-0-21>21</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-0-22>22</a> kind: AccessKey <a class=lnlinks href=#hl-0-23>23</a> spec: <a class=lnlinks href=#hl-0-24>24</a> forProvider: <a class=lnlinks href=#hl-0-25>25</a> userSelector: <a class=lnlinks href=#hl-0-26>26</a> matchControllerRef: true <a class=lnlinks href=#hl-0-27>27</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-0-28>28</a> namespace: docs <a class=lnlinks href=#hl-0-29>29</a> name: key1 <a class=lnlinks href=#hl-0-30>30</a> connectionDetails: <a class=lnlinks href=#hl-0-31>31</a> - name: user <a class=lnlinks href=#hl-0-32>32</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-33>33</a> fromConnectionSecretKey: username <a class=lnlinks href=#hl-0-34>34</a> - name: password <a class=lnlinks href=#hl-0-35>35</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-36>36</a> fromConnectionSecretKey: password <a class=lnlinks href=#hl-0-37>37</a> - name: key <a class=lnlinks href=#hl-0-38>38</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-39>39</a> fromConnectionSecretKey: attribute.secret <a class=lnlinks href=#hl-0-40>40</a> - name: smtp <a class=lnlinks href=#hl-0-41>41</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-42>42</a> fromConnectionSecretKey: attribute.ses_smtp_password_v4 <a class=lnlinks href=#hl-0-43>43</a> patches: <a class=lnlinks href=#hl-0-44>44</a> - fromFieldPath: "metadata.uid" <a class=lnlinks href=#hl-0-45>45</a> toFieldPath: "spec.writeConnectionSecretToRef.name" <a class=lnlinks href=#hl-0-46>46</a> transforms: <a class=lnlinks href=#hl-0-47>47</a> - type: string <a class=lnlinks href=#hl-0-48>48</a> string: <a class=lnlinks href=#hl-0-49>49</a> type: Format <a class=lnlinks href=#hl-0-50>50</a> fmt: "%s-secret1" <a class=lnlinks href=#hl-0-51>51</a> - name: user <a class=lnlinks href=#hl-0-52>52</a> base: <a class=lnlinks href=#hl-0-53>53</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-0-54>54</a> kind: User <a class=lnlinks href=#hl-0-55>55</a> spec: <a class=lnlinks href=#hl-0-56>56</a> forProvider: {} <a class=lnlinks href=#hl-0-57>57</a> - name: user2 <a class=lnlinks href=#hl-0-58>58</a> base: <a class=lnlinks href=#hl-0-59>59</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-0-60>60</a> kind: User <a class=lnlinks href=#hl-0-61>61</a> metadata: <a class=lnlinks href=#hl-0-62>62</a> labels: <a class=lnlinks href=#hl-0-63>63</a> docs.crossplane.io: user <a class=lnlinks href=#hl-0-64>64</a> spec: <a class=lnlinks href=#hl-0-65>65</a> forProvider: {} <a class=lnlinks href=#hl-0-66>66</a> - name: key2 <a class=lnlinks href=#hl-0-67>67</a> base: <a class=lnlinks href=#hl-0-68>68</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-0-69>69</a> kind: AccessKey <a class=lnlinks href=#hl-0-70>70</a> spec: <a class=lnlinks href=#hl-0-71>71</a> forProvider: <a class=lnlinks href=#hl-0-72>72</a> userSelector: <a class=lnlinks href=#hl-0-73>73</a> matchLabels: <a class=lnlinks href=#hl-0-74>74</a> docs.crossplane.io: user <a class=lnlinks href=#hl-0-75>75</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-0-76>76</a> namespace: docs <a class=lnlinks href=#hl-0-77>77</a> name: key2 <a class=lnlinks href=#hl-0-78>78</a> connectionDetails: <a class=lnlinks href=#hl-0-79>79</a> - name: key2-user <a class=lnlinks href=#hl-0-80>80</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-81>81</a> fromConnectionSecretKey: username <a class=lnlinks href=#hl-0-82>82</a> - name: key2-password <a class=lnlinks href=#hl-0-83>83</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-84>84</a> fromConnectionSecretKey: password <a class=lnlinks href=#hl-0-85>85</a> - name: key2-secret <a class=lnlinks href=#hl-0-86>86</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-87>87</a> fromConnectionSecretKey: attribute.secret <a class=lnlinks href=#hl-0-88>88</a> - name: key2-smtp <a class=lnlinks href=#hl-0-89>89</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-0-90>90</a> fromConnectionSecretKey: attribute.ses_smtp_password_v4 <a class=lnlinks href=#hl-0-91>91</a> patches: <a class=lnlinks href=#hl-0-92>92</a> - fromFieldPath: "metadata.uid" <a class=lnlinks href=#hl-0-93>93</a> toFieldPath: "spec.writeConnectionSecretToRef.name" <a class=lnlinks href=#hl-0-94>94</a> transforms: <a class=lnlinks href=#hl-0-95>95</a> - type: string <a class=lnlinks href=#hl-0-96>96</a> string: <a class=lnlinks href=#hl-0-97>97</a> type: Format <a class=lnlinks href=#hl-0-98>98</a> fmt: "%s-secret2" <a class=lnlinks href=#hl-0-99>99</a>`` ` </code></pre></div></div></div></div></div><div class="accordion mb-3" id=reference-compositeresourcedefinition-757-Parent><div class=accordion-item><h2 class=accordion-header id=reference-compositeresourcedefinition-757><button class="accordion-button collapsed" type=button data-bs-toggle=collapse data-bs-target=#reference-compositeresourcedefinition-757-Content aria-expanded=false aria-controls=reference-compositeresourcedefinition-757-Content> Reference CompositeResourceDefinition</button></h2><div id=reference-compositeresourcedefinition-757-Content class="accordion-collapse collapse" aria-labelledby=reference-compositeresourcedefinition-757 data-bs-parent=#reference-compositeresourcedefinition-757-Parent><div class="accordion-body rounded-bottom"><div class=highlight><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-0-1> 1</a>apiVersion: apiextensions.crossplane.io/v1 <a class=lnlinks href=#hl-0-2> 2</a>kind: CompositeResourceDefinition <a class=lnlinks href=#hl-0-3> 3</a>metadata: <a class=lnlinks href=#hl-0-4> 4</a> name: xsecrettests.example.org <a class=lnlinks href=#hl-0-5> 5</a>spec: <a class=lnlinks href=#hl-0-6> 6</a> group: example.org <a class=lnlinks href=#hl-0-7> 7</a> connectionSecretKeys: <a class=lnlinks href=#hl-0-8> 8</a> - username <a class=lnlinks href=#hl-0-9> 9</a> - password <a class=lnlinks href=#hl-0-10>10</a> - attribute.secret <a class=lnlinks href=#hl-0-11>11</a> - attribute.ses_smtp_password_v4 <a class=lnlinks href=#hl-0-12>12</a> - key2-user <a class=lnlinks href=#hl-0-13>13</a> - key2-pass <a class=lnlinks href=#hl-0-14>14</a> - key2-secret <a class=lnlinks href=#hl-0-15>15</a> - key2-smtp <a class=lnlinks href=#hl-0-16>16</a> names: <a class=lnlinks href=#hl-0-17>17</a> kind: XSecretTest <a class=lnlinks href=#hl-0-18>18</a> plural: xsecrettests <a class=lnlinks href=#hl-0-19>19</a> claimNames: <a class=lnlinks href=#hl-0-20>20</a> kind: SecretTest <a class=lnlinks href=#hl-0-21>21</a> plural: secrettests <a class=lnlinks href=#hl-0-22>22</a> versions: <a class=lnlinks href=#hl-0-23>23</a> - name: v1alpha1 <a class=lnlinks href=#hl-0-24>24</a> served: true <a class=lnlinks href=#hl-0-25>25</a> referenceable: true <a class=lnlinks href=#hl-0-26>26</a> schema: <a class=lnlinks href=#hl-0-27>27</a> openAPIV3Schema: <a class=lnlinks href=#hl-0-28>28</a> type: object <a class=lnlinks href=#hl-0-29>29</a> properties: <a class=lnlinks href=#hl-0-30>30</a> spec: <a class=lnlinks href=#hl-0-31>31</a> type: object </code></pre></div></div></div></div></div><div class="accordion mb-3" id=reference-claim-217-Parent><div class=accordion-item><h2 class=accordion-header id=reference-claim-217><button class="accordion-button collapsed" type=button data-bs-toggle=collapse data-bs-target=#reference-claim-217-Content aria-expanded=false aria-controls=reference-claim-217-Content> Reference Claim</button></h2><div id=reference-claim-217-Content class="accordion-collapse collapse" aria-labelledby=reference-claim-217 data-bs-parent=#reference-claim-217-Parent><div class="accordion-body rounded-bottom"><div class=highlight><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-0-1>1</a>apiVersion: example.org/v1alpha1 <a class=lnlinks href=#hl-0-2>2</a>kind: SecretTest <a class=lnlinks href=#hl-0-3>3</a>metadata: <a class=lnlinks href=#hl-0-4>4</a> name: test-secrets <a class=lnlinks href=#hl-0-5>5</a> namespace: default <a class=lnlinks href=#hl-0-6>6</a>spec: <a class=lnlinks href=#hl-0-7>7</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-0-8>8</a> name: my-access-key-secret </code></pre></div></div></div></div></div></div></div><h2 id=connection-secrets-in-a-managed-resource>Connection secrets in a managed resource <a class=anchor-link id=connection-secrets-in-a-managed-resource href=#connection-secrets-in-a-managed-resource aria-label="Link to this section: Connection secrets in a managed resource"></a></h2>When a managed resource creates connection secrets, Crossplane can write the secrets to a <a href=https://docs.crossplane.io/master/concepts/managed-resources/#publish-secrets-to-kubernetes>Kubernetes secret</a> or an <a href=https://docs.crossplane.io/master/concepts/managed-resources/#publish-secrets-to-an-external-secrets-store>external secret store</a>.Creating an individual managed resource shows the connection secrets the resource creates.<div class="admonition note d-flex flex-column mx-4 p-0"><div class=admonition-title><svg class="bi flex-shrink-0" role="img" aria-label="note:"><use xlink:href="#info"/></svg>Note</div><div class=admonition-content>Read the <a href=https://docs.crossplane.io/master/concepts/managed-resources/>managed resources</a> documentation for more information on configuring resources and storing connection secrets for individual resources.</div></div>For example, create an <code><highlight-term id=1731573034688670031 data-label=mr data-line=2>AccessKey</highlight-term></code> resource and save the connection secrets in a Kubernetes secret named <code><highlight-term id=1731573034688735099 data-label=mr data-line=12>my-accesskey-secret</highlight-term></code> in the <code><highlight-term id=1731573034688777006 data-label=mr data-line=11>default</highlight-term></code> namespace.<div class=highlight label=mr><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-0-1> 1</a>apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-0-2> 2</a>kind: AccessKey <a class=lnlinks href=#hl-0-3> 3</a>metadata: <a class=lnlinks href=#hl-0-4> 4</a> name: test-accesskey <a class=lnlinks href=#hl-0-5> 5</a>spec: <a class=lnlinks href=#hl-0-6> 6</a> forProvider: <a class=lnlinks href=#hl-0-7> 7</a> userSelector: <a class=lnlinks href=#hl-0-8> 8</a> matchLabels: <a class=lnlinks href=#hl-0-9> 9</a> docs.crossplane.io: user <a class=lnlinks href=#hl-0-10>10</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-0-11>11</a> namespace: default <a class=lnlinks href=#hl-0-12>12</a> name: my-accesskey-secret </code></pre></div>View the Kubernetes secret to see the connection details from the managed resource. This includes an <code><highlight-term id=1731573034689030332 data-label=mrSecret data-line=11>attribute.secret</highlight-term></code>, <code><highlight-term id=1731573034689071392 data-label=mrSecret data-line=12>attribute.ses_smtp_password_v4</highlight-term></code>, <code><highlight-term id=1731573034689100657 data-label=mrSecret data-line=13>password</highlight-term></code> and <code><highlight-term id=1731573034689126377 data-label=mrSecret data-line=14>username</highlight-term></code><div class=highlight label=mrSecret copy-lines=1><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-1-1> 1</a>kubectl describe secret my-accesskey-secret <a class=lnlinks href=#hl-1-2> 2</a>Name: my-accesskey-secret <a class=lnlinks href=#hl-1-3> 3</a>Namespace: default <a class=lnlinks href=#hl-1-4> 4</a>Labels: <none> <a class=lnlinks href=#hl-1-5> 5</a>Annotations: <none> <a class=lnlinks href=#hl-1-6> 6</a> <a class=lnlinks href=#hl-1-7> 7</a>Type: connection.crossplane.io/v1alpha1 <a class=lnlinks href=#hl-1-8> 8</a> <a class=lnlinks href=#hl-1-9> 9</a>Data <a class=lnlinks href=#hl-1-10>10</a>==== <a class=lnlinks href=#hl-1-11>11</a>attribute.secret: 40 bytes <a class=lnlinks href=#hl-1-12>12</a>attribute.ses_smtp_password_v4: 44 bytes <a class=lnlinks href=#hl-1-13>13</a>password: 40 bytes <a class=lnlinks href=#hl-1-14>14</a>username: 20 bytes </code></pre></div>Compositions and CompositeResourceDefinitions require the exact names of the secrets generated by a resource.<h2 id=connection-secrets-in-compositions>Connection secrets in Compositions <a class=anchor-link id=connection-secrets-in-compositions href=#connection-secrets-in-compositions aria-label="Link to this section: Connection secrets in Compositions"></a></h2>Resources in a Composition that create connection details still create a secret object containing their connection details. Crossplane also generates another secret object for each composite resource, containing the secrets from all the defined resources.For example, a Composition defines two <code><highlight-term id=1731573034689151054 data-label=comp1 data-line=9>AccessKey</highlight-term></code> objects. Each <code><highlight-term id=1731573034689174565 data-label=comp1 data-line=9>AccessKey</highlight-term></code> writes a connection secrets to the <code><highlight-term id=1731573034689197517 data-label=comp1 data-line=15>name</highlight-term></code> inside the <code><highlight-term id=1731573034689220950 data-label=comp1 data-line=14>namespace</highlight-term></code> defined by the resource <code><highlight-term id=1731573034689259136 data-label=comp1 data-line=13>writeConnectionSecretToRef</highlight-term></code>.Crossplane also creates a secret object for the entire Composition saved in the namespace defined by <code><highlight-term id=1731573034689305685 data-label=comp1 data-line=4>writeConnectionSecretsToNamespace</highlight-term></code> with a Crossplane generated name.<div class=highlight label=comp1 copy-lines=none><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-2-1> 1</a>apiVersion: apiextensions.crossplane.io/v1 <a class=lnlinks href=#hl-2-2> 2</a>kind: Composition <a class=lnlinks href=#hl-2-3> 3</a>spec: <a class=lnlinks href=#hl-2-4> 4</a> writeConnectionSecretsToNamespace: other-namespace <a class=lnlinks href=#hl-2-5> 5</a> mode: Pipeline <a class=lnlinks href=#hl-2-6> 6</a> pipeline: <a class=lnlinks href=#hl-2-7> 7</a> - step: patch-and-transform <a class=lnlinks href=#hl-2-8> 8</a> functionRef: <a class=lnlinks href=#hl-2-9> 9</a> name: function-patch-and-transform <a class=lnlinks href=#hl-2-10>10</a> input: <a class=lnlinks href=#hl-2-11>11</a> apiVersion: pt.fn.crossplane.io/v1beta1 <a class=lnlinks href=#hl-2-12>12</a> kind: Resources <a class=lnlinks href=#hl-2-13>13</a> resources: <a class=lnlinks href=#hl-2-14>14</a> - name: key1 <a class=lnlinks href=#hl-2-15>15</a> base: <a class=lnlinks href=#hl-2-16>16</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-2-17>17</a> kind: AccessKey <a class=lnlinks href=#hl-2-18>18</a> spec: <a class=lnlinks href=#hl-2-19>19</a> forProvider: <a class=lnlinks href=#hl-2-20>20</a> # Removed for brevity <a class=lnlinks href=#hl-2-21>21</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-2-22>22</a> namespace: docs <a class=lnlinks href=#hl-2-23>23</a> name: key1-secret <a class=lnlinks href=#hl-2-24>24</a> - name: key2 <a class=lnlinks href=#hl-2-25>25</a> base: <a class=lnlinks href=#hl-2-26>26</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-2-27>27</a> kind: AccessKey <a class=lnlinks href=#hl-2-28>28</a> spec: <a class=lnlinks href=#hl-2-29>29</a> forProvider: <a class=lnlinks href=#hl-2-30>30</a> # Removed for brevity <a class=lnlinks href=#hl-2-31>31</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-2-32>32</a> namespace: docs <a class=lnlinks href=#hl-2-33>33</a> name: key2-secret <a class=lnlinks href=#hl-2-34>34</a> # Removed for brevity </code></pre></div>After applying a Claim, view the Kubernetes secrets to see three secret objects created.The secret <code><highlight-term id=1731573034689343674 data-label=compGetSec data-line=3>key1-secret</highlight-term></code> is from the resource <code><highlight-term id=1731573034689371428 data-label=comp1 data-line=6>key1</highlight-term></code>, <code><highlight-term id=1731573034689395994 data-label=compGetSec data-line=4>key2-secret</highlight-term></code> is from the resource <code><highlight-term id=1731573034689419149 data-label=comp1 data-line=16>key2</highlight-term></code>.Crossplane creates another secret in the namespace <code><highlight-term id=1731573034689442524 data-label=compGetSec data-line=5>other-namespace</highlight-term></code> with the secrets from resource in the Composition.<div class=highlight label=compGetSec copy-lines=1><pre tabindex=0 class=chroma><code class=language-shell data-lang=shell><a class=lnlinks href=#hl-3-1>1</a>kubectl get secrets -A <a class=lnlinks href=#hl-3-2>2</a>NAMESPACE NAME TYPE DATA AGE <a class=lnlinks href=#hl-3-3>3</a>docs key1-secret connection.crossplane.io/v1alpha1 4 4s <a class=lnlinks href=#hl-3-4>4</a>docs key2-secret connection.crossplane.io/v1alpha1 4 4s <a class=lnlinks href=#hl-3-5>5</a>other-namespace 70975471-c44f-4f6d-bde6-6bbdc9de1eb8 connection.crossplane.io/v1alpha1 0 6s </code></pre></div>Although Crossplane creates a secret object, by default, Crossplane doesn’t add any data to the object.<div class=highlight copy-lines=none><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-4-1>1</a>kubectl describe secret 70975471-c44f-4f6d-bde6-6bbdc9de1eb8 -n other-namespace <a class=lnlinks href=#hl-4-2>2</a>Name: 70975471-c44f-4f6d-bde6-6bbdc9de1eb8 <a class=lnlinks href=#hl-4-3>3</a>Namespace: other-namespace <a class=lnlinks href=#hl-4-4>4</a> <a class=lnlinks href=#hl-4-5>5</a>Type: connection.crossplane.io/v1alpha1 <a class=lnlinks href=#hl-4-6>6</a> <a class=lnlinks href=#hl-4-7>7</a>Data <a class=lnlinks href=#hl-4-8>8</a>==== </code></pre></div>The Composition must list the connection secrets to store for each resource. Use the <code><highlight-term id=1731573034689465731 data-label=comp2 data-line=16>connectionDetails</highlight-term></code> object under each resource and define the secret keys the resource creates.<div class="admonition warning d-flex flex-column mx-4 p-0"><div class=admonition-title><svg class="bi flex-shrink-0" role="img" aria-label="warning:"><use xlink:href="#fire"/></svg>Warning</div><div class=admonition-content>You can’t change the <code><highlight-term id=1731573034689488936 data-label=comp2 data-line=16>connectionDetails</highlight-term></code> of a Composition. You must delete and recreate the Composition to change the <code><highlight-term id=1731573034689504684 data-label=comp2 data-line=16>connectionDetails</highlight-term></code>.</div></div><div class=highlight label=comp2 copy-lines=16-20><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-5-1> 1</a>apiVersion: apiextensions.crossplane.io/v1 <a class=lnlinks href=#hl-5-2> 2</a>kind: Composition <a class=lnlinks href=#hl-5-3> 3</a>spec: <a class=lnlinks href=#hl-5-4> 4</a> writeConnectionSecretsToNamespace: other-namespace <a class=lnlinks href=#hl-5-5> 5</a> mode: Pipeline <a class=lnlinks href=#hl-5-6> 6</a> pipeline: <a class=lnlinks href=#hl-5-7> 7</a> - step: patch-and-transform <a class=lnlinks href=#hl-5-8> 8</a> functionRef: <a class=lnlinks href=#hl-5-9> 9</a> name: function-patch-and-transform <a class=lnlinks href=#hl-5-10>10</a> input: <a class=lnlinks href=#hl-5-11>11</a> apiVersion: pt.fn.crossplane.io/v1beta1 <a class=lnlinks href=#hl-5-12>12</a> kind: Resources <a class=lnlinks href=#hl-5-13>13</a> resources: <a class=lnlinks href=#hl-5-14>14</a> - name: key <a class=lnlinks href=#hl-5-15>15</a> base: <a class=lnlinks href=#hl-5-16>16</a> apiVersion: iam.aws.upbound.io/v1beta1 <a class=lnlinks href=#hl-5-17>17</a> kind: AccessKey <a class=lnlinks href=#hl-5-18>18</a> spec: <a class=lnlinks href=#hl-5-19>19</a> forProvider: <a class=lnlinks href=#hl-5-20>20</a> # Removed for brevity <a class=lnlinks href=#hl-5-21>21</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-5-22>22</a> namespace: docs <a class=lnlinks href=#hl-5-23>23</a> name: key1 <a class=lnlinks href=#hl-5-24>24</a> connectionDetails: <a class=lnlinks href=#hl-5-25>25</a> - name: user <a class=lnlinks href=#hl-5-26>26</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-5-27>27</a> fromConnectionSecretKey: username <a class=lnlinks href=#hl-5-28>28</a> - name: password <a class=lnlinks href=#hl-5-29>29</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-5-30>30</a> fromConnectionSecretKey: password <a class=lnlinks href=#hl-5-31>31</a> - name: key <a class=lnlinks href=#hl-5-32>32</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-5-33>33</a> fromConnectionSecretKey: attribute.secret <a class=lnlinks href=#hl-5-34>34</a> - name: smtp <a class=lnlinks href=#hl-5-35>35</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-5-36>36</a> fromConnectionSecretKey: attribute.ses_smtp_password_v4 <a class=lnlinks href=#hl-5-37>37</a> # Removed for brevity </code></pre></div>After applying a Claim the composite resource secret object contains the list of keys listed in the <code><highlight-term id=1731573034689628659 data-label=comp2 data-line=16>connectionDetails</highlight-term></code>.<div class=highlight copy-lines=1><pre tabindex=0 class=chroma><code class=language-shell data-lang=shell><a class=lnlinks href=#hl-6-1> 1</a>kubectl describe secret -n other-namespace <a class=lnlinks href=#hl-6-2> 2</a>Name: b0dc71f8-2688-4ebc-818a-bbad6a2c4f9a <a class=lnlinks href=#hl-6-3> 3</a>Namespace: other-namespace <a class=lnlinks href=#hl-6-4> 4</a> <a class=lnlinks href=#hl-6-5> 5</a>Type: connection.crossplane.io/v1alpha1 <a class=lnlinks href=#hl-6-6> 6</a> <a class=lnlinks href=#hl-6-7> 7</a>Data <a class=lnlinks href=#hl-6-8> 8</a>==== <a class=lnlinks href=#hl-6-9> 9</a>username: 20 bytes <a class=lnlinks href=#hl-6-10>10</a>attribute.secret: 40 bytes <a class=lnlinks href=#hl-6-11>11</a>attribute.ses_smtp_password_v4: 44 bytes <a class=lnlinks href=#hl-6-12>12</a>password: 40 bytes </code></pre></div><div class="admonition important d-flex flex-column mx-4 p-0"><div class=admonition-title><svg class="bi flex-shrink-0" role="img" aria-label="important:"><use xlink:href="#exclamation"/></svg>Important</div><div class=admonition-content>If a key isn’t listed in the <code><highlight-term id=1731573034689651576 data-label=comp2 data-line=16>connectionDetails</highlight-term></code> it isn’t stored in the secret object.</div></div><h3 id=managing-conflicting-secret-keys>Managing conflicting secret keys <a class=anchor-link id=managing-conflicting-secret-keys href=#managing-conflicting-secret-keys aria-label="Link to this section: Managing conflicting secret keys"></a></h3>If resources produce conflicting keys, create a unique name with a connection details <code><highlight-term id=1731573034689732524 data-label=comp3 data-line=25>name</highlight-term></code>.<div class=highlight label=comp3 copy-lines=none><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-7-1> 1</a>apiVersion: apiextensions.crossplane.io/v1 <a class=lnlinks href=#hl-7-2> 2</a>kind: Composition <a class=lnlinks href=#hl-7-3> 3</a>spec: <a class=lnlinks href=#hl-7-4> 4</a> writeConnectionSecretsToNamespace: other-namespace <a class=lnlinks href=#hl-7-5> 5</a> mode: Pipeline <a class=lnlinks href=#hl-7-6> 6</a> pipeline: <a class=lnlinks href=#hl-7-7> 7</a> - step: patch-and-transform <a class=lnlinks href=#hl-7-8> 8</a> functionRef: <a class=lnlinks href=#hl-7-9> 9</a> name: function-patch-and-transform <a class=lnlinks href=#hl-7-10>10</a> input: <a class=lnlinks href=#hl-7-11>11</a> apiVersion: pt.fn.crossplane.io/v1beta1 <a class=lnlinks href=#hl-7-12>12</a> kind: Resources <a class=lnlinks href=#hl-7-13>13</a> resources: <a class=lnlinks href=#hl-7-14>14</a> - name: key <a class=lnlinks href=#hl-7-15>15</a> base: <a class=lnlinks href=#hl-7-16>16</a> kind: AccessKey <a class=lnlinks href=#hl-7-17>17</a> spec: <a class=lnlinks href=#hl-7-18>18</a> # Removed for brevity <a class=lnlinks href=#hl-7-19>19</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-7-20>20</a> namespace: docs <a class=lnlinks href=#hl-7-21>21</a> name: key1 <a class=lnlinks href=#hl-7-22>22</a> connectionDetails: <a class=lnlinks href=#hl-7-23>23</a> - name: user <a class=lnlinks href=#hl-7-24>24</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-7-25>25</a> fromConnectionSecretKey: username <a class=lnlinks href=#hl-7-26>26</a> - name: key2 <a class=lnlinks href=#hl-7-27>27</a> base: <a class=lnlinks href=#hl-7-28>28</a> kind: AccessKey <a class=lnlinks href=#hl-7-29>29</a> spec: <a class=lnlinks href=#hl-7-30>30</a> # Removed for brevity <a class=lnlinks href=#hl-7-31>31</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-7-32>32</a> namespace: docs <a class=lnlinks href=#hl-7-33>33</a> name: key2 <a class=lnlinks href=#hl-7-34>34</a> connectionDetails: <a class=lnlinks href=#hl-7-35>35</a> - name: key2-user <a class=lnlinks href=#hl-7-36>36</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-7-37>37</a> fromConnectionSecretKey: username </code></pre></div>The secret object contains both keys, <code><highlight-term id=1731573034689754454 data-label=comp3Sec data-line=9>username</highlight-term></code> and <code><highlight-term id=1731573034689771957 data-label=comp3Sec data-line=10>key2-user</highlight-term></code><div class=highlight label=comp3Sec copy-lines=1><pre tabindex=0 class=chroma><code class=language-shell data-lang=shell><a class=lnlinks href=#hl-8-1> 1</a>kubectl describe secret -n other-namespace <a class=lnlinks href=#hl-8-2> 2</a>Name: b0dc71f8-2688-4ebc-818a-bbad6a2c4f9a <a class=lnlinks href=#hl-8-3> 3</a>Namespace: other-namespace <a class=lnlinks href=#hl-8-4> 4</a> <a class=lnlinks href=#hl-8-5> 5</a>Type: connection.crossplane.io/v1alpha1 <a class=lnlinks href=#hl-8-6> 6</a> <a class=lnlinks href=#hl-8-7> 7</a>Data <a class=lnlinks href=#hl-8-8> 8</a>==== <a class=lnlinks href=#hl-8-9> 9</a>username: 20 bytes <a class=lnlinks href=#hl-8-10>10</a>key2-user: 20 bytes <a class=lnlinks href=#hl-8-11>11</a># Removed for brevity. </code></pre></div><h2 id=connection-secrets-in-composite-resource-definitions>Connection secrets in Composite Resource Definitions <a class=anchor-link id=connection-secrets-in-composite-resource-definitions href=#connection-secrets-in-composite-resource-definitions aria-label="Link to this section: Connection secrets in Composite Resource Definitions"></a></h2>The CompositeResourceDefinition (<code>XRD</code>), can restrict which secrets keys are put in the combined secret and provided to a Claim.By default an XRD writes all secret keys listed in the composed resource <code>connectionDetails</code> to the combined secret object.Limit the keys passed to the combined secret object and Claims with a <code><highlight-term id=1731573034689794158 data-label=xrd data-line=4>connectionSecretKeys</highlight-term></code> object.Inside the <code><highlight-term id=1731573034689810555 data-label=xrd data-line=4>connectionSecretKeys</highlight-term></code> list the secret key names to create. Crossplane only adds the keys listed to the combined secret.<div class="admonition warning d-flex flex-column mx-4 p-0"><div class=admonition-title><svg class="bi flex-shrink-0" role="img" aria-label="warning:"><use xlink:href="#fire"/></svg>Warning</div><div class=admonition-content>You can’t change the <code><highlight-term id=1731573034689831026 data-label=xrd data-line=4>connectionSecretKeys</highlight-term></code> of an XRD. You must delete and recreate the XRD to change the <code><highlight-term id=1731573034689844506 data-label=xrd data-line=4>connectionSecretKeys</highlight-term></code>.</div></div>For example, an XRD may restrict the secrets to only the <code><highlight-term id=1731573034689949799 data-label=xrd data-line=5>username</highlight-term></code>, <code><highlight-term id=1731573034689968249 data-label=xrd data-line=6>password</highlight-term></code> and custom named <code><highlight-term id=1731573034689987150 data-label=xrd data-line=7>key2-user</highlight-term></code> keys.<div class=highlight label=xrd copy-lines=4-12><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-9-1>1</a>kind: CompositeResourceDefinition <a class=lnlinks href=#hl-9-2>2</a>spec: <a class=lnlinks href=#hl-9-3>3</a> # Removed for brevity. <a class=lnlinks href=#hl-9-4>4</a> connectionSecretKeys: <a class=lnlinks href=#hl-9-5>5</a> - username <a class=lnlinks href=#hl-9-6>6</a> - password <a class=lnlinks href=#hl-9-7>7</a> - key2-user </code></pre></div>The secret from an individual resource contains all the resources detailed in the Composition’s <code>connectionDetails</code>.<div class=highlight label=xrdSec copy-lines=1><pre tabindex=0 class=chroma><code class=language-shell data-lang=shell><a class=lnlinks href=#hl-10-1> 1</a>kubectl describe secret key1 -n docs <a class=lnlinks href=#hl-10-2> 2</a>Name: key1 <a class=lnlinks href=#hl-10-3> 3</a>Namespace: docs <a class=lnlinks href=#hl-10-4> 4</a> <a class=lnlinks href=#hl-10-5> 5</a>Data <a class=lnlinks href=#hl-10-6> 6</a>==== <a class=lnlinks href=#hl-10-7> 7</a>password: 40 bytes <a class=lnlinks href=#hl-10-8> 8</a>username: 20 bytes <a class=lnlinks href=#hl-10-9> 9</a>attribute.secret: 40 bytes <a class=lnlinks href=#hl-10-10>10</a>attribute.ses_smtp_password_v4: 44 bytes </code></pre></div>The Claim’s secret only contains the keys allowed by the XRD <code><highlight-term id=1731573034690005127 data-label=xrd data-line=4>connectionSecretKeys</highlight-term></code> fields.<div class=highlight label=xrdSec2 copy-lines=2><pre tabindex=0 class=chroma><code class=language-shell data-lang=shell><a class=lnlinks href=#hl-11-1>1</a>kubectl describe secret my-access-key-secret <a class=lnlinks href=#hl-11-2>2</a>Name: my-access-key-secret <a class=lnlinks href=#hl-11-3>3</a> <a class=lnlinks href=#hl-11-4>4</a>Data <a class=lnlinks href=#hl-11-5>5</a>==== <a class=lnlinks href=#hl-11-6>6</a>key2-user: 20 bytes <a class=lnlinks href=#hl-11-7>7</a>password: 40 bytes <a class=lnlinks href=#hl-11-8>8</a>username: 20 bytes </code></pre></div><h2 id=secret-objects>Secret objects <a class=anchor-link id=secret-objects href=#secret-objects aria-label="Link to this section: Secret objects"></a></h2>Compositions create a secret object for each resource and an extra secret containing all the secrets from all resources.Crossplane saves the resource secret objects in the location defined by the resource’s <code><highlight-term id=1731573034690021761 data-label=comp4 data-line=11>writeConnectionSecretToRef</highlight-term></code>.Crossplane saves the combined secret with a Crossplane generated name in the namespace defined in the Composition’s <code><highlight-term id=1731573034690037926 data-label=comp4 data-line=4>writeConnectionSecretsToNamespace</highlight-term></code>.<div class=highlight label=comp4 copy-lines=none><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-12-1> 1</a>apiVersion: apiextensions.crossplane.io/v1 <a class=lnlinks href=#hl-12-2> 2</a>kind: Composition <a class=lnlinks href=#hl-12-3> 3</a>spec: <a class=lnlinks href=#hl-12-4> 4</a> writeConnectionSecretsToNamespace: other-namespace <a class=lnlinks href=#hl-12-5> 5</a> mode: Pipeline <a class=lnlinks href=#hl-12-6> 6</a> pipeline: <a class=lnlinks href=#hl-12-7> 7</a> - step: patch-and-transform <a class=lnlinks href=#hl-12-8> 8</a> functionRef: <a class=lnlinks href=#hl-12-9> 9</a> name: function-patch-and-transform <a class=lnlinks href=#hl-12-10>10</a> input: <a class=lnlinks href=#hl-12-11>11</a> apiVersion: pt.fn.crossplane.io/v1beta1 <a class=lnlinks href=#hl-12-12>12</a> kind: Resources <a class=lnlinks href=#hl-12-13>13</a> resources: <a class=lnlinks href=#hl-12-14>14</a> - name: key <a class=lnlinks href=#hl-12-15>15</a> base: <a class=lnlinks href=#hl-12-16>16</a> kind: AccessKey <a class=lnlinks href=#hl-12-17>17</a> spec: <a class=lnlinks href=#hl-12-18>18</a> # Removed for brevity <a class=lnlinks href=#hl-12-19>19</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-12-20>20</a> namespace: docs <a class=lnlinks href=#hl-12-21>21</a> name: key1 <a class=lnlinks href=#hl-12-22>22</a> connectionDetails: <a class=lnlinks href=#hl-12-23>23</a> - name: user <a class=lnlinks href=#hl-12-24>24</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-12-25>25</a> fromConnectionSecretKey: username <a class=lnlinks href=#hl-12-26>26</a> - name: key2 <a class=lnlinks href=#hl-12-27>27</a> base: <a class=lnlinks href=#hl-12-28>28</a> kind: AccessKey <a class=lnlinks href=#hl-12-29>29</a> spec: <a class=lnlinks href=#hl-12-30>30</a> # Removed for brevity <a class=lnlinks href=#hl-12-31>31</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-12-32>32</a> namespace: docs <a class=lnlinks href=#hl-12-33>33</a> name: key2 <a class=lnlinks href=#hl-12-34>34</a> connectionDetails: <a class=lnlinks href=#hl-12-35>35</a> - name: key2-user <a class=lnlinks href=#hl-12-36>36</a> type: FromConnectionSecretKey <a class=lnlinks href=#hl-12-37>37</a> fromConnectionSecretKey: username </code></pre></div>If a Claim uses a secret, it’s stored in the same namespace as the Claim with the name defined in the Claim’s <code><highlight-term id=1731573034690057004 data-label=claim3 data-line=7>writeConnectionSecretToRef</highlight-term></code>.<div class=highlight label=claim3 copy-lines=none><pre tabindex=0 class=chroma><code class=language-yaml data-lang=yaml><a class=lnlinks href=#hl-13-1>1</a>apiVersion: example.org/v1alpha1 <a class=lnlinks href=#hl-13-2>2</a>kind: SecretTest <a class=lnlinks href=#hl-13-3>3</a>metadata: <a class=lnlinks href=#hl-13-4>4</a> name: test-secrets <a class=lnlinks href=#hl-13-5>5</a> namespace: default <a class=lnlinks href=#hl-13-6>6</a>spec: <a class=lnlinks href=#hl-13-7>7</a> writeConnectionSecretToRef: <a class=lnlinks href=#hl-13-8>8</a> name: my-access-key-secret </code></pre></div>After applying the Claim Crossplane creates the following secrets:<ul><li>The Claim’s secret, <code><highlight-term id=1731573034690071717 data-label=allSec data-line=3>my-access-key-secret</highlight-term></code> in the Claim’s <code><highlight-term id=1731573034690085972 data-label=claim3 data-line=5>namespace</highlight-term></code>.</li><li>The first resource’s secret object, <code><highlight-term id=1731573034690100813 data-label=allSec data-line=4>key1</highlight-term></code>.</li><li>The second resource’s secret object, <code><highlight-term id=1731573034690114939 data-label=allSec data-line=5>key2</highlight-term></code>.</li><li>The composite resource secret object in the <code><highlight-term id=1731573034690130845 data-label=allSec data-line=6>other-namespace</highlight-term></code> defined by the Composition’s <code>writeConnectionSecretsToNamespace</code>.</li></ul><div class=highlight label=allSec copy-lines=none><pre tabindex=0 class=chroma><code class=language-shell data-lang=shell><a class=lnlinks href=#hl-14-1>1</a> kubectl get secret -A <a class=lnlinks href=#hl-14-2>2</a>NAMESPACE NAME TYPE DATA AGE <a class=lnlinks href=#hl-14-3>3</a>default my-access-key-secret connection.crossplane.io/v1alpha1 8 29m <a class=lnlinks href=#hl-14-4>4</a>docs key1 connection.crossplane.io/v1alpha1 4 31m <a class=lnlinks href=#hl-14-5>5</a>docs key2 connection.crossplane.io/v1alpha1 4 31m <a class=lnlinks href=#hl-14-6>6</a>other-namespace b0dc71f8-2688-4ebc-818a-bbad6a2c4f9a connection.crossplane.io/v1alpha1 8 31m </code></pre></div></div></main></div><footer class="bd-footer p-5"><div class="container text-center"><div class="row pb-5 top-row"><div class="col-lg img-col"><img src=/img/crossplane-logo.svg alt="Crossplane logo" srcset="/img/crossplane-logo.svg 1x, /img/crossplane-logo.svg 2x" width=185 height=40 decoding=async data-nimg=future loading=lazy class="d-flex crossplane-footer"></div><div class="col-lg links-col d-fill justify-content-evenly ms-5"><div class=row><div class=col-lg><a class=footer-link target=_blank href=https://twitter.com/crossplane_io>Twitter</a></div><div class=col-lg><a class=footer-link target=_blank href=https://www.youtube.com/channel/UC19FgzMBMqBro361HbE46Fw>Youtube</a></div><div class=col-lg><a class=footer-link target=_blank href="https://www.youtube.com/playlist?list=PL510POnNVaaYFuK-B_SIUrpIonCtLVOzT">Podcast</a></div><div class=col-lg><a class=footer-link target=_blank href=https://groups.google.com/g/crossplane-dev>Forum</a></div></div></div></div><div class="row pb-5"><div class="col-lg copyright-col pe-4 border-end">© Crossplane Authors 2024. 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