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    <title>Exportto on homelab89</title>
    <link>https://blog.homelab89.com/tags/exportto/</link>
    <description>Recent content in Exportto on homelab89</description>
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    <lastBuildDate>Tue, 09 Jun 2026 00:00:00 +0000</lastBuildDate>
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      <title>Egress route 스코핑 — `metadata.namespace`는 적용 범위가 아니다</title>
      <link>https://blog.homelab89.com/docs/istio/egress/vs-scoping/</link>
      <pubDate>Tue, 09 Jun 2026 00:00:00 +0000</pubDate>
      <guid>https://blog.homelab89.com/docs/istio/egress/vs-scoping/</guid>
      <description>&lt;div class=&#34;callout abstract&#34;&gt;
&lt;div class=&#34;ct&#34;&gt;ABSTRACT&lt;/div&gt;
&lt;p&gt;Istio traffic 리소스의 &lt;code&gt;metadata.namespace&lt;/code&gt;는 &amp;ldquo;&lt;strong&gt;어디에 저장했는가&lt;/strong&gt;&amp;quot;(소유 경계)이지 &amp;ldquo;&lt;strong&gt;어느 proxy에 적용되는가&lt;/strong&gt;&amp;quot;(적용 범위)가 아니다. 적용 범위는 &lt;code&gt;gateways&lt;/code&gt; · &lt;code&gt;exportTo&lt;/code&gt; · &lt;code&gt;sourceNamespace/sourceLabels&lt;/code&gt; · &lt;code&gt;Sidecar.egress.hosts&lt;/code&gt; &lt;strong&gt;네 레버의 직교 조합&lt;/strong&gt;으로 따로 결정된다. 이 분리를 모르면 egress 설정이 다른 namespace sidecar로 새거나(전역 누수), gateway가 필요한 route를 못 본다. egress gateway를 &lt;strong&gt;여러 개&lt;/strong&gt;(passthrough용 / mTLS용) 두는 순간 스코핑은 &lt;em&gt;선택&lt;/em&gt;이 아니라 &lt;em&gt;전제&lt;/em&gt;가 된다.&lt;/p&gt;</description>
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