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<label for=nav-toggle class=nav-curtain></label></header><main class="main single" id=main><div class=main-inner><article class="content post home h-entry"><h2 class="post-title p-name"><a href=/posts/reading-notes-of-building-a-second-brain/ class="summary-title-link u-url">读《Building a Second Brain》</a></h2><div class=post-meta><time datetime=2022-07-28T13:06:12+08:00 class="post-meta-item published dt-published"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon post-meta-icon"><path d="M148 288h-40c-6.6.0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5.0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h48c26.5.0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3.0 6-2.7 6-6z"/></svg> 2022.7.28</time>
<span class="post-meta-item category"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49.0 112v288c0 26.51 21.49 48 48 48h416c26.51.0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z"/></svg> <a href=/categories/%E7%AC%94%E8%AE%B0%E6%80%BB%E7%BB%93/ class="category-link p-category">笔记总结</a></span>
<span class="post-meta-item wordcount"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M497.9 142.1l-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3.0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9.0l60.1 60.1c18.8 18.7 18.8 49.1.0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3.0-17l-111-111c-4.8-4.7-12.4-4.7-17.1.0zM124.1 339.9c-5.5-5.5-5.5-14.3.0-19.8l154-154c5.5-5.5 14.3-5.5 19.8.0s5.5 14.3.0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8.0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg> 5135</span>
<span class="post-meta-item reading-time"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5.0-2e2-89.5-2e2-2e2S145.5 56 256 56s2e2 89.5 2e2 2e2-89.5 2e2-2e2 2e2zm61.8-104.4-84.9-61.7c-3.1-2.3-4.9-5.9-4.9-9.7V116c0-6.6 5.4-12 12-12h32c6.6.0 12 5.4 12 12v141.7l66.8 48.6c5.4 3.9 6.5 11.4 2.6 16.8L334.6 349c-3.9 5.3-11.4 6.5-16.8 2.6z"/></svg> 11 分钟</span></div><summary class="summary p-summary">这本书出版于六月份，花了些时间看了大半。笔记中掺杂了一些个人的总结和看法，一般会放在原文内容归纳的后面。</summary><div class=read-more-container><a href=/posts/reading-notes-of-building-a-second-brain/ class=read-more-link>阅读更多 »</a></div></article><article class="content post home h-entry"><h2 class="post-title p-name"><a href=/posts/how-to-reduce-docker-image-size/ class="summary-title-link u-url">如何优化 docker 镜像体积</a></h2><div class=post-meta><time datetime=2022-07-17T09:29:18+08:00 class="post-meta-item published dt-published"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon post-meta-icon"><path d="M148 288h-40c-6.6.0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5.0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h48c26.5.0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3.0 6-2.7 6-6z"/></svg> 2022.7.17</time>
<span class="post-meta-item category"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49.0 112v288c0 26.51 21.49 48 48 48h416c26.51.0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z"/></svg> <a href=/categories/linux/ class="category-link p-category">Linux</a></span>
<span class="post-meta-item wordcount"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M497.9 142.1l-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3.0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9.0l60.1 60.1c18.8 18.7 18.8 49.1.0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3.0-17l-111-111c-4.8-4.7-12.4-4.7-17.1.0zM124.1 339.9c-5.5-5.5-5.5-14.3.0-19.8l154-154c5.5-5.5 14.3-5.5 19.8.0s5.5 14.3.0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8.0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg> 2967</span>
<span class="post-meta-item reading-time"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5.0-2e2-89.5-2e2-2e2S145.5 56 256 56s2e2 89.5 2e2 2e2-89.5 2e2-2e2 2e2zm61.8-104.4-84.9-61.7c-3.1-2.3-4.9-5.9-4.9-9.7V116c0-6.6 5.4-12 12-12h32c6.6.0 12 5.4 12 12v141.7l66.8 48.6c5.4 3.9 6.5 11.4 2.6 16.8L334.6 349c-3.9 5.3-11.4 6.5-16.8 2.6z"/></svg> 6 分钟</span></div><summary class="summary p-summary">介绍一点 docker 镜像体积优化的先进经验。</summary><div class=read-more-container><a href=/posts/how-to-reduce-docker-image-size/ class=read-more-link>阅读更多 »</a></div></article><article class="content post home h-entry"><h2 class="post-title p-name"><a href=/posts/postgresql-14-continuous-archiving-and-pitr/ class="summary-title-link u-url">如何使用 PostgreSQL 14 的持续归档备份和基于时间点恢复</a></h2><div class=post-meta><time datetime=2022-07-10T19:41:15+08:00 class="post-meta-item published dt-published"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon post-meta-icon"><path d="M148 288h-40c-6.6.0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5.0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h48c26.5.0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3.0 6-2.7 6-6z"/></svg> 2022.7.10</time>
<span class="post-meta-item category"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49.0 112v288c0 26.51 21.49 48 48 48h416c26.51.0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z"/></svg> <a href=/categories/%E6%95%B0%E6%8D%AE%E5%BA%93/ class="category-link p-category">数据库</a></span>
<span class="post-meta-item wordcount"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M497.9 142.1l-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3.0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9.0l60.1 60.1c18.8 18.7 18.8 49.1.0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3.0-17l-111-111c-4.8-4.7-12.4-4.7-17.1.0zM124.1 339.9c-5.5-5.5-5.5-14.3.0-19.8l154-154c5.5-5.5 14.3-5.5 19.8.0s5.5 14.3.0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8.0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg> 6232</span>
<span class="post-meta-item reading-time"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5.0-2e2-89.5-2e2-2e2S145.5 56 256 56s2e2 89.5 2e2 2e2-89.5 2e2-2e2 2e2zm61.8-104.4-84.9-61.7c-3.1-2.3-4.9-5.9-4.9-9.7V116c0-6.6 5.4-12 12-12h32c6.6.0 12 5.4 12 12v141.7l66.8 48.6c5.4 3.9 6.5 11.4 2.6 16.8L334.6 349c-3.9 5.3-11.4 6.5-16.8 2.6z"/></svg> 13 分钟</span></div><summary class="summary p-summary">简单介绍如何使用 PostgreSQL 14 的持续归档备份以及基于时间点恢复功能。</summary><div class=read-more-container><a href=/posts/postgresql-14-continuous-archiving-and-pitr/ class=read-more-link>阅读更多 »</a></div></article><article class="content post home h-entry"><h2 class="post-title p-name"><a href=/posts/how-linux-process-input-frames/ class="summary-title-link u-url">浅析 Linux 如何接收网络帧</a></h2><div class=post-meta><time datetime=2022-04-25T17:54:58+08:00 class="post-meta-item published dt-published"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon post-meta-icon"><path d="M148 288h-40c-6.6.0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5.0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h48c26.5.0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3.0 6-2.7 6-6z"/></svg> 2022.4.25</time>
<span class="post-meta-item category"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49.0 112v288c0 26.51 21.49 48 48 48h416c26.51.0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z"/></svg> <a href=/categories/linux/ class="category-link p-category">Linux</a></span>
<span class="post-meta-item wordcount"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M497.9 142.1l-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3.0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9.0l60.1 60.1c18.8 18.7 18.8 49.1.0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3.0-17l-111-111c-4.8-4.7-12.4-4.7-17.1.0zM124.1 339.9c-5.5-5.5-5.5-14.3.0-19.8l154-154c5.5-5.5 14.3-5.5 19.8.0s5.5 14.3.0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8.0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg> 7616</span>
<span class="post-meta-item reading-time"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5.0-2e2-89.5-2e2-2e2S145.5 56 256 56s2e2 89.5 2e2 2e2-89.5 2e2-2e2 2e2zm61.8-104.4-84.9-61.7c-3.1-2.3-4.9-5.9-4.9-9.7V116c0-6.6 5.4-12 12-12h32c6.6.0 12 5.4 12 12v141.7l66.8 48.6c5.4 3.9 6.5 11.4 2.6 16.8L334.6 349c-3.9 5.3-11.4 6.5-16.8 2.6z"/></svg> 16 分钟</span></div><summary class="summary p-summary">本文将从初学者角度，介绍 Linux 内核如何接收网络帧：从网卡设备完成数据帧的接收开始，到数据帧被传递到网络栈中的第三层结束。</summary><div class=read-more-container><a href=/posts/how-linux-process-input-frames/ class=read-more-link>阅读更多 »</a></div></article><article class="content post home h-entry"><h2 class="post-title p-name"><a href=/posts/enable-pod-security-policy-for-cluster/ class="summary-title-link u-url">为 Kubernetes 集群启用 Pod 安全策略</a></h2><div class=post-meta><time datetime=2022-03-30T18:13:13+08:00 class="post-meta-item published dt-published"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon post-meta-icon"><path d="M148 288h-40c-6.6.0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5.0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h48c26.5.0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3.0 6-2.7 6-6z"/></svg> 2022.3.30</time>
<span class="post-meta-item category"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49.0 112v288c0 26.51 21.49 48 48 48h416c26.51.0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z"/></svg> <a href=/categories/kubernetes/ class="category-link p-category">Kubernetes</a></span>
<span class="post-meta-item wordcount"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M497.9 142.1l-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3.0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9.0l60.1 60.1c18.8 18.7 18.8 49.1.0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3.0-17l-111-111c-4.8-4.7-12.4-4.7-17.1.0zM124.1 339.9c-5.5-5.5-5.5-14.3.0-19.8l154-154c5.5-5.5 14.3-5.5 19.8.0s5.5 14.3.0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8.0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg> 3265</span>
<span class="post-meta-item reading-time"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5.0-2e2-89.5-2e2-2e2S145.5 56 256 56s2e2 89.5 2e2 2e2-89.5 2e2-2e2 2e2zm61.8-104.4-84.9-61.7c-3.1-2.3-4.9-5.9-4.9-9.7V116c0-6.6 5.4-12 12-12h32c6.6.0 12 5.4 12 12v141.7l66.8 48.6c5.4 3.9 6.5 11.4 2.6 16.8L334.6 349c-3.9 5.3-11.4 6.5-16.8 2.6z"/></svg> 7 分钟</span></div><summary class="summary p-summary">最近有客户反馈在开启了安全策略的集群中部署产品失败，因此研究了一下 Kubernetes 的 pod 安全策略。</summary><div class=read-more-container><a href=/posts/enable-pod-security-policy-for-cluster/ class=read-more-link>阅读更多 »</a></div></article><article class="content post home h-entry"><h2 class="post-title p-name"><a href=/posts/understanding-netfilter-and-iptables/ class="summary-title-link u-url">深入理解 netfilter 和 iptables</a></h2><div class=post-meta><time datetime=2022-03-07T23:27:11+08:00 class="post-meta-item published dt-published"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon post-meta-icon"><path d="M148 288h-40c-6.6.0-12-5.4-12-12v-40c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v40c0 6.6-5.4 12-12 12zm108-12v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 96v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm-96 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm192 0v-40c0-6.6-5.4-12-12-12h-40c-6.6.0-12 5.4-12 12v40c0 6.6 5.4 12 12 12h40c6.6.0 12-5.4 12-12zm96-260v352c0 26.5-21.5 48-48 48H48c-26.5.0-48-21.5-48-48V112c0-26.5 21.5-48 48-48h48V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h128V12c0-6.6 5.4-12 12-12h40c6.6.0 12 5.4 12 12v52h48c26.5.0 48 21.5 48 48zm-48 346V160H48v298c0 3.3 2.7 6 6 6h340c3.3.0 6-2.7 6-6z"/></svg> 2022.3.7</time>
<span class="post-meta-item category"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M464 128H272l-54.63-54.63c-6-6-14.14-9.37-22.63-9.37H48C21.49 64 0 85.49.0 112v288c0 26.51 21.49 48 48 48h416c26.51.0 48-21.49 48-48V176c0-26.51-21.49-48-48-48zm0 272H48V112h140.12l54.63 54.63c6 6 14.14 9.37 22.63 9.37H464v224z"/></svg> <a href=/categories/linux/ class="category-link p-category">Linux</a></span>
<span class="post-meta-item wordcount"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M497.9 142.1l-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3.0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9.0l60.1 60.1c18.8 18.7 18.8 49.1.0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3.0-17l-111-111c-4.8-4.7-12.4-4.7-17.1.0zM124.1 339.9c-5.5-5.5-5.5-14.3.0-19.8l154-154c5.5-5.5 14.3-5.5 19.8.0s5.5 14.3.0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8.0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg> 5042</span>
<span class="post-meta-item reading-time"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon post-meta-icon"><path d="M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5.0-2e2-89.5-2e2-2e2S145.5 56 256 56s2e2 89.5 2e2 2e2-89.5 2e2-2e2 2e2zm61.8-104.4-84.9-61.7c-3.1-2.3-4.9-5.9-4.9-9.7V116c0-6.6 5.4-12 12-12h32c6.6.0 12 5.4 12 12v141.7l66.8 48.6c5.4 3.9 6.5 11.4 2.6 16.8L334.6 349c-3.9 5.3-11.4 6.5-16.8 2.6z"/></svg> 11 分钟</span></div><summary class="summary p-summary">Netfilter 配合 iptables 使得应用可以操作内核网络栈的数据包处理规则，实现高效的网络转发和过滤。很多常见的主机防火墙程序以及 Kubernetes 的 Service 转发都是通过 iptables 来实现的。</summary><div class=read-more-container><a href=/posts/understanding-netfilter-and-iptables/ class=read-more-link>阅读更多 »</a></div></article><ul class=pagination><li class=pagination-next><a href=/page/2/ rel=next>下一页 ></a></li></ul></div></main><div id=back-to-top class=back-to-top><a href=#><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" 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