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    <title>Outlier-Detection on homelab89</title>
    <link>https://blog.homelab89.com/tags/outlier-detection/</link>
    <description>Recent content in Outlier-Detection on homelab89</description>
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      <title>Runbook — ServiceEntry `resolution: DNS` 동작과 진단 (STRICT_DNS)</title>
      <link>https://blog.homelab89.com/docs/istio/egress/report-dns-resolution/</link>
      <pubDate>Sun, 07 Jun 2026 00:00:00 +0000</pubDate>
      <guid>https://blog.homelab89.com/docs/istio/egress/report-dns-resolution/</guid>
      <description>&lt;div class=&#34;callout abstract&#34;&gt;
&lt;div class=&#34;ct&#34;&gt;ABSTRACT&lt;/div&gt;
&lt;p&gt;외부 도메인(&lt;code&gt;httpbin.org&lt;/code&gt;)을 &lt;code&gt;ServiceEntry(resolution: DNS)&lt;/code&gt;로 등록하면 istiod가 이를 Envoy의
&lt;strong&gt;STRICT_DNS cluster&lt;/strong&gt;로 변환한다. 이 문서는 그 변환·DNS 갱신 메커니즘, &amp;ldquo;죽은 IP&amp;rdquo; 처리, ambient DNS
질의 경로를 홈랩 실측·재현 명령과 함께 한 줄의 멘탈모델로 꿴다.
&lt;strong&gt;결론 한 문장: DNS refresh는 health check가 아니다&lt;/strong&gt; — DNS는 &amp;ldquo;목록&amp;quot;만 줄 뿐 IP의 생사를 모르므로,
죽은 IP 회피는 outlier detection으로 &lt;em&gt;명시&lt;/em&gt;해야 한다.&lt;/p&gt;</description>
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