{"id":5931,"date":"2022-11-07T14:13:46","date_gmt":"2022-11-07T06:13:46","guid":{"rendered":"https:\/\/i007.vip:15443\/wordpress\/?p=5931"},"modified":"2022-11-07T14:13:46","modified_gmt":"2022-11-07T06:13:46","slug":"containerd%e9%95%9c%e5%83%8flazy-pulling%e3%80%8c%e8%af%a6%e7%bb%86%e8%a7%a3%e8%af%bb-%e3%80%8d","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5931","title":{"rendered":"Containerd\u955c\u50cflazy-pulling\u300c\u8be6\u7ec6\u89e3\u8bfb \u300d"},"content":{"rendered":"<div class=\"article-header-box\">\n<div class=\"article-header\">\n<div class=\"article-title-box\">\n<p id=\"articleContentId\" class=\"title-article\"><a href=\"https:\/\/blog.csdn.net\/More_Action\/article\/details\/112725047\">\u539f\u6587\u5730\u5740<\/a><\/p>\n<\/div>\n<div class=\"article-info-box\">\n<div class=\"article-bar-top\"><img decoding=\"async\" class=\"article-type-img\" src=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/pc\/img\/reprint.png\" alt=\"\" \/><\/p>\n<div class=\"bar-content\"><a class=\"follow-nickName \" href=\"https:\/\/blog.csdn.net\/More_Action\" target=\"_blank\" rel=\"noopener\">\u7761\u9b54\u7684\u8c0e\u8a00<\/a><img decoding=\"async\" class=\"article-time-img article-heard-img\" src=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/pc\/img\/newCurrentTime2.png\" alt=\"\" \/><span class=\"time\">\u4e8e\u00a02021-01-16 21:25:49\u00a0\u53d1\u5e03<\/span><img decoding=\"async\" class=\"article-read-img article-heard-img\" src=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/pc\/img\/articleReadEyes2.png\" alt=\"\" \/><span class=\"read-count\">562<\/span><a id=\"blog_detail_zk_collection\" class=\"un-collection\" data-report-click=\"{\"mod\":\"popu_823\",\"spm\":\"1001.2101.3001.4232\",\"ab\":\"new\"}\"><\/a><img decoding=\"async\" class=\"article-collect-img article-heard-img un-collect-status isdefault\" src=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/pc\/img\/tobarCollect2.png\" alt=\"\" \/>\u00a0<span class=\"name\">\u6536\u85cf<\/span><\/div>\n<\/div>\n<div class=\"blog-tags-box\">\n<div class=\"tags-box artic-tag-box\"><span class=\"label\">\u6587\u7ae0\u6807\u7b7e\uff1a<\/span>\u00a0<a class=\"tag-link\" href=\"https:\/\/so.csdn.net\/so\/search\/s.do?q=%E7%BD%91%E7%BB%9C&#038;t=blog&#038;o=vip&#038;s=&#038;l=&#038;f=&#038;viparticle=\" target=\"_blank\" rel=\"noopener\">\u7f51\u7edc<\/a><\/div>\n<\/div>\n<div class=\"operating\"><a class=\"href-article-edit slide-toggle\">\u7248\u6743<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<article class=\"baidu_pl\">\n<div id=\"article_content\" class=\"article_content clearfix\">\n<div id=\"content_views\" class=\"markdown_views prism-atom-one-dark\">\n<div>\n<div>\n<p><strong>\u4e00\u3001\u80cc\u666f<\/strong><\/p>\n<\/div>\n<\/div>\n<p>\u6211\u4eec\u77e5\u9053\uff0c\u5bb9\u5668\u8fd0\u884c\u8d77\u6765\u7684\u65f6\u95f4\u662f\u975e\u5e38\u5feb\u7684\uff0c\u4f46\u662f\u5982\u679c\u8282\u70b9\u4e0a\u5bb9\u5668\u7684\u955c\u50cf\u4e0d\u5b58\u5728\uff0c\u90a3\u4e48\u5728\u8fd0\u884c\u5bb9\u5668\u65f6\u8981\u5148\u62c9\u53d6\u955c\u50cf\uff0c\u62c9\u53d6\u955c\u50cf\u5728\u5bb9\u5668\u542f\u52a8\u7684\u8fc7\u7a0b\u4e2d\u5360\u7528\u7684\u65f6\u95f4\u6bd4\u8f83\u957f\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u8981\u5c06\u5bb9\u5668\u6240\u6709\u7684\u955c\u50cf\u5c42\u90fd\u62c9\u53d6\u5230\u672c\u5730\u78c1\u76d8\u4e2d\u3002\u636e\u7edf\u8ba1\uff0c\u62c9\u955c\u50cf\u64cd\u4f5c\u8981\u5360\u7528\u5bb9\u5668\u542f\u52a8\u65f6\u95f4\u768476%\u3002\u8fd9\u5728\u5bb9\u5668\u6570\u91cf\u5c11\u7684\u60c5\u51b5\u4e0b\u95ee\u9898\u4e0d\u5927\uff0c\u4f46\u5bb9\u5668\u6570\u91cf\u6bd4\u8f83\u591a\u5e76\u4e14\u90fd\u662f<a class=\"hl hl-1\" href=\"https:\/\/so.csdn.net\/so\/search?q=%E5%86%B7%E5%90%AF%E5%8A%A8&#038;spm=1001.2101.3001.7020\" target=\"_blank\" rel=\"noopener\" data-tit=\"\u51b7\u542f\u52a8\" data-pretit=\"\u51b7\u542f\u52a8\">\u51b7\u542f\u52a8<\/a>\u7684\u65f6\u5019\u4f1a\u975e\u5e38\u7684\u6162\u3002<\/p>\n<p>\u5982\u4f55\u89e3\u51b3\u5bb9\u5668\u51b7\u542f\u52a8\u8fc7\u7a0b\u4e2d\u62c9\u53d6\u955c\u50cf\u6162\u8fd9\u4e2a\u95ee\u9898\uff1f\u6709\u8fd9\u6837\u7684\u4e00\u79cd\u89e3\u51b3\u601d\u8def\uff1a\u5728\u5bb9\u5668\u542f\u52a8\u8fc7\u7a0b\u4e2d\uff0c\u5bb9\u5668\u8981\u7528\u7684\u955c\u50cf\u901a\u8fc7\u9ad8\u901f\u7f51\u7edc\u6309\u9700\u4ece\u955c\u50cf\u4ed3\u5e93\u4e2d\u8bfb\u53d6\uff0c\u800c\u4e0d\u662f\u5c06\u955c\u50cf\u6240\u6709\u7684\u5c42\u90fd\u62c9\u4e0b\u6765\u3002Stargz-snapshotter\u662fcontainerd\u4e0b\u9762\u7684\u4e00\u4e2a\u5b50\u9879\u76ee\uff0c\u4ee5Proxy Plugin\u7684\u65b9\u5f0f\u6269\u5c55containerd\u7684\u529f\u80fd\uff0c\u662fContainerd\u7684\u4e00\u4e2aremote-snapshotter\u5b9e\u73b0\u3002<\/p>\n<p><strong>\u7248\u672c\u53d8\u8fc1<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p9-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/e81fe927f0e043a193913493eb960376~tplv-k3u1fbpfcp-watermark.image\" alt=\"\" \/><\/p>\n<p><strong>\u4e8c\u3001\u4f7f\u7528<\/strong><\/p>\n<p>Stargz-snapshotter\u5728kuberentes\u4e2d\u4f7f\u7528\u6bd4\u8f83\u7b80\u5355\uff1a\u4f7f\u7528Containerd\u4f5c\u4e3akuberentes\u7684CRI\u8fd0\u884c\u65f6\u3002\u5728\u672c\u5730\u8d77\u4e00\u4e2astargz-snapshotter\u7684\u670d\u52a1\uff0c\u4f5c\u4e3acontainerd\u7684\u4e00\u4e2aremote snapshotter\u3002<\/p>\n<p><strong>\u955c\u50cf\u8f6c\u6362<\/strong><\/p>\n<p>\u5728\u4f7f\u7528\u524d\u9700\u8981\u5c06\u6211\u4eec\u7684\u666e\u901a\u7684\u955c\u50cf\u8f6c\u6362\u6210stargz-snapshotter\u53ef\u4ee5\u8bc6\u522b\u7684\u955c\u50cf\uff0c\u4f7f\u7528ctr-remote\u5de5\u5177\u8fdb\u884c\u8f6c\u6362\uff0c\u4e0b\u9762\u793a\u4f8b\u662f\u5c06\u672c\u5730\u4e00\u4e2acentos\u955c\u50cf\u8fdb\u884c\u8f6c\u6362\uff0c\u8f6c\u6362\u5b8c\u6210\u540e\u63a8\u9001\u5230\u955c\u50cf\u4ed3\u5e93\u4e2d\uff1a<\/p>\n<pre class=\"prettyprint\" data-index=\"0\"><code class=\"has-numbering\">$ ctr-remote image optimize --plain-http --entrypoint='[ \"sleep\" ]' --args='[ \"3000\" ]' centos:7 centos:7-eg\r\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n<ul class=\"pre-numbering\">\n<li>1<\/li>\n<\/ul>\n<p><strong>\u5bf9\u6bd4<\/strong><\/p>\n<p>\u4f7f\u7528crictl\u5de5\u5177\u5728\u672c\u5730\u62c9\u53d6\u8f6c\u6362\u524d\u548c\u8f6c\u6362\u540e\u7684\u955c\u50cf\uff0c\u505a\u4e00\u4e0b\u5bf9\u6bd4<a title=\"\u9ad8\u7ea7\u6708\u5ac2\" href=\"https:\/\/www.cuirushipeixun.cn\/gjyuersao\">\uff0c<\/a>\u901a\u8fc7lazy\u7684\u65b9\u5f0f\u62c9\u53d6\u955c\u50cf\u7684\u901f\u5ea6\u66f4\u5feb\uff1a<\/p>\n<pre class=\"prettyprint\" data-index=\"1\"><code class=\"has-numbering\"># \u6b63\u5e38\u62c9\u53d6\u955c\u50cf\r\n$ time crictl pull centos:7\r\nImage is up to date for sha256:ef8f4eaacef5da519df36f0462e280c77f8125870dbb77e85c898c87fdbbea27real  \r\n0m5.967suser  0m0.009ssys  0m0.012s\r\n# \u62c9\u53d6\u4f18\u5316\u540e\u7684\u955c\u50cf\r\n$ time crictl pull centos:7-eg\r\nImage is up to date for sha256:36edf0c0bb4daca572ba284057960f1441b14e0d21d5e497cb47646a22f653d6real  \r\n0m0.624suser  0m0.012ssys  0m0.010s\r\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n<ul class=\"pre-numbering\">\n<li>1<\/li>\n<li>2<\/li>\n<li>3<\/li>\n<li>4<\/li>\n<li>5<\/li>\n<li>6<\/li>\n<li>7<\/li>\n<li>8<\/li>\n<\/ul>\n<p><strong>\u67e5\u770b\u955c\u50cf\u5c42<\/strong><\/p>\n<p>\u4f7f\u7528crictl\u521b\u5efa\u4e00\u4e2apod\uff0c\u8fdb\u5165\u5bb9\u5668\u4e2d\uff0c\u67e5\u770b\/.stargz-snapshotter\/\u76ee\u5f55\u4e0b\u5404\u4e2a\u955c\u50cf\u5c42\u5728\u672c\u5730\u7f13\u5b58\u7684\u60c5\u51b5\uff1a<\/p>\n<pre class=\"prettyprint\" data-index=\"2\"><code class=\"has-numbering\">$ cat \/.stargz-snapshotter\/*{\"digest\":\"sha256:857949cb596c96cc9e91156bf7587a105a2e1bc1e6db1b9507596a24a80f351a\",\"size\":80005845,\"fetchedSize\":3055845,\"fetchedPercent\":3.819527185794988}{\"digest\":\"sha256:8c57b1a6bef1480562bc27d145f6d371955e1f1901ebdea590f38bfedd6e17d0\",\"size\":33614550,\"fetchedSize\":64550,\"fetchedPercent\":0.19202993941611593}\r\n\u590d\u5236\u4ee3\u7801<\/code><\/pre>\n<ul class=\"pre-numbering\">\n<li>1<\/li>\n<\/ul>\n<p><strong>\u4e09\u3001\u539f\u7406<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/oscimg.oschina.net\/oscnet\/up-f3a912d6d6d7d9309cd33cd5e89d7db8221.png\" width=\"1\" height=\"1\" \/><img decoding=\"async\" src=\"https:\/\/p9-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/1042610f3480446da94f742ee041aae2~tplv-k3u1fbpfcp-watermark.image\" alt=\"\" \/><\/p>\n<p>\u4e0a\u56fe\u662fstargz-snapshotter\u7684\u5b9e\u73b0\u6982\u89c8\uff0c\u901a\u5e38\u7684\u6211\u4eec\u5728\u62c9\u53d6\u955c\u50cf\u65f6\uff0c\u8981\u5c06\u955c\u50cf\u7684\u6bcf\u4e00\u5c42\u62c9\u53d6\u4e0b\u6765\uff0c\u800c\u4f7f\u7528stargz-snapshotter\u540econtainerd\u4e0d\u518d\u662f\u62c9\u53d6\u955c\u50cf\u7684\u5c42\uff0c\u800c\u662f\u4e3a\u5b58\u50a8\u5728\u955c\u50cf\u4ed3\u5e93\u4e2d\u955c\u50cf\u7684\u6bcf\u4e00\u5c42\u5728\u5bb9\u5668\u8fd0\u884c\u8282\u70b9\u4e0a\u521b\u5efa\u4e00\u4e2a\u76ee\u5f55\uff0c\u901a\u8fc7\u8fdc\u7a0b\u6302\u8f7d\u7684\u65b9\u5f0f\u6302\u5230\u5404\u4e2a\u76ee\u5f55\u4e0a\u3002\u5bb9\u5668\u542f\u52a8\u524d\u518d\u5c06\u5404\u4e2a\u76ee\u5f55\u505aoverlay\u6302\u8f7d\uff0c\u4e3a\u5bb9\u5668\u63d0\u4f9b\u4e00\u4e2arootfs\u3002\u5f53\u9700\u8981\u8bfb\u53d6\u67d0\u4e2a\u6587\u4ef6\u65f6\uff0c\u901a\u8fc7\u7f51\u7edc\u8bfb\u53d6\u955c\u50cf\u4ed3\u5e93\u4e2d\u955c\u50cf\u5c42\u4e2d\u7684\u6587\u4ef6\u3002<\/p>\n<p>\u4e0b\u9762\u518d\u770b\u4e00\u4e0b\u955c\u50cf\u5c42\u662f\u600e\u4e48\u8fdc\u7a0b\u6302\u8f7d\u548c\u5982\u4f55\u4ece\u955c\u50cf\u5c42\u4e2d\u6309\u9700\u8bfb\u53d6\u6587\u4ef6\u7684\u3002<\/p>\n<p><strong>\u7528\u6237\u6001\u6587\u4ef6\u7cfb\u7edf<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/oscimg.oschina.net\/oscnet\/up-3a408937b995b8fb7b516633f2dcf3660f6.png\" width=\"1\" height=\"1\" \/><img decoding=\"async\" src=\"https:\/\/p6-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/e735bc6a903d4c18b8881360e446892b~tplv-k3u1fbpfcp-watermark.image\" alt=\"\" \/><\/p>\n<p>Stargz-snapshotter\u4f7f\u7528FUSE\u5b9e\u73b0\u4e86\u7528\u6237\u6001\u7684\u6587\u4ef6\u7cfb\u7edf\u3002FUSE\uff08Filesystem in userspace\uff09\u6846\u67b6\u662f\u4e00\u4e2a\u5185\u6838\u6a21\u5757\uff0c\u80fd\u591f\u8ba9\u7528\u6237\u5728\u7528\u6237\u7a7a\u95f4\u5b9e\u73b0\u6587\u4ef6\u7cfb\u7edf\u5e76\u4e14\u6302\u8f7d\u5230\u67d0\u4e2a\u76ee\u5f55\uff0c\u5c31\u50cf\u5728\u5185\u6838\u5b9e\u73b0\u6587\u4ef6\u7cfb\u7edf\u4e00\u6837\u3002<\/p>\n<p>\u5982\u4e0a\u56fe\u6240\u793a\uff0cstargz-snapshotter\u662f\u4e00\u4e2a\u5b9e\u73b0\u4e86\u7528\u6237\u6001\u6587\u4ef6\u7cfb\u7edf\u7684\u7a0b\u5e8f\uff08golang\u8bed\u8a00\uff0c\u4f7f\u7528go-fuse\u4f5c\u4e3a\u5b9e\u73b0\u7684\u4f9d\u8d56\uff09\u3002\u5f53\u6709\u62c9\u53d6\u955c\u50cf\u7684\u64cd\u4f5c\u53d1\u751f\u65f6\uff0cstargz-snapshotter\u4f1a\u4e3a\u955c\u50cf\u7684\u6bcf\u4e00\u5c42\u5728${stargz-root}\/snapshotter\/snapshots\/\u4e0b\u521b\u5efa\u4e00\u4e2a\u76ee\u5f55\uff0c\u6267\u884c\u5b9e\u73b0\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\u7684\u903b\u8f91\uff0c\u5e76\u5c06\u8fd9\u4e2a\u6587\u4ef6\u7cfb\u7edf\u6302\u8f7d\u5230\u521a\u521b\u5efa\u7684\u76ee\u5f55\u4e0a\uff0c\u4f8b\u5982\u56fe\u4e2d\u7684\/dcos\/snapshotter\/snapshots\/1\u3002\u5f53\u6709\u7528\u6237\u8bfb\u53d6\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u65f6\uff0c\u8bf7\u6c42\u7684\u6d41\u5411\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<p>\u2460 \u64cd\u4f5c\u8bf7\u6c42\u7ecfVFS\u5230FUSE<\/p>\n<p>\u2461 FUSE\u5185\u6838\u6a21\u5757\u6839\u636e\u8bf7\u6c42\u7c7b\u578b\uff0c\u8c03\u7528stargz-snapshotter\u7684\u903b\u8f91\uff0cstargz-snapshotter\u4ece\u955c\u50cf\u4ed3\u5e93\u4e2d\u8bfb\u53d6\u8be5\u5c42\u4e2d\u7684\u6587\u4ef6<\/p>\n<p>\u2462 Stargz-snapshotter\u5c06\u6587\u4ef6\u7684\u5185\u5bb9\u901a\u8fc7VFS\u8fd4\u56de\u7ed9\u7cfb\u7edf\u8c03\u7528<\/p>\n<p><strong>(e)stargz\u683c\u5f0f<\/strong><\/p>\n<p>a. stargz\u683c\u5f0f<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/p6-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/cf4c8c3a5441453587982f7b8d1ba373~tplv-k3u1fbpfcp-watermark.image\" alt=\"\" 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decoding=\"async\" src=\"https:\/\/p9-juejin.byteimg.com\/tos-cn-i-k3u1fbpfcp\/5a9fac24c890428ba47c914267c561a9~tplv-k3u1fbpfcp-watermark.image\" alt=\"\" \/><\/p>\n<p>Containerd\u4f7f\u7528stargz-snapshotter\u62c9\u53d6\u955c\u50cf\u7684\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p>\u2460 \u6839\u636e\u955c\u50cf\u540d\u79f0\u548ctag\u89e3\u6790\u51fa\u955c\u50cfmanifest\u7684digest\u7684\u503c<\/p>\n<p>\u2461 \u6839\u636e\u955c\u50cfmanifest\u7684digest\u7684\u503c\uff0c\u4ece\u955c\u50cf\u4ed3\u5e93\u4e2d\u4e0b\u8f7dmanifest\uff0c\u4fdd\u5b58\u5728content store\u4e2d<\/p>\n<p>\u2462 \u6839\u636emanifest\u7684\u5185\u5bb9\u83b7\u53d6\u955c\u50cfconfig\u7684digest\u7684\u503c\uff0c\u4ece\u955c\u50cf\u4ed3\u5e93\u4e2d\u4e0b\u8f7dconfig\uff0c\u4fdd\u5b58\u5728content store\u4e2d<\/p>\n<p>\u2463 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