{"id":887,"date":"2021-05-20T22:36:55","date_gmt":"2021-05-20T14:36:55","guid":{"rendered":"https:\/\/www.myway5.com\/?p=887"},"modified":"2023-07-05T10:09:33","modified_gmt":"2023-07-05T02:09:33","slug":"containerd-startup","status":"publish","type":"post","link":"https:\/\/www.myway5.com\/index.php\/2021\/05\/20\/containerd-startup\/","title":{"rendered":"containerd\u7684\u542f\u52a8\u6d41\u7a0b"},"content":{"rendered":"<p>\u6574\u4f53\u67b6\u6784\u56fe\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.myway5.com\/wp-content\/uploads\/2021\/05\/architecture.png\" alt=\"\" \/><\/p>\n<ul>\n<li>\u4f7f\u7528 <code>github.com\/urfave\/cli<\/code>\u542f\u52a8\uff0c\u6709 command\n<ul>\n<li>configCommand: \u548c containerd \u914d\u7f6e\u76f8\u5173<\/li>\n<li>publishCommand\uff1aevent \u76f8\u5173<\/li>\n<li>ociHook: \u63d0\u4f9b\u4e86 preStart, preStop \u7b49 container hook<\/li>\n<\/ul>\n<\/li>\n<li>\u672a\u6267\u884c\u5b50 command\uff0c\u5219\u6267\u884c\u9ed8\u8ba4\u7684 action\n<ul>\n<li>\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6<\/li>\n<li>\u521b\u5efa\u9876\u5c42\u6587\u4ef6\u5939:<\/li>\n<li>root = &#8220;\/var\/lib\/containerd&#8221;<\/li>\n<li>state = &#8220;\/run\/containerd&#8221;<\/li>\n<li>\u521b\u5efa \/var\/lib\/containerd\/tmpmounts<\/li>\n<li>\u6e05\u7406 tmpmounts \u4e0b\u7684\u4e34\u65f6\u6302\u8f7d\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>\u521b\u5efa\u548c\u521d\u59cb\u5316 containerd server\n<ul>\n<li>\u5c06\u914d\u7f6e\u8bbe\u7f6e\u7684 server \u8fdb\u7a0b\u4e0a<\/li>\n<li>\u5982\u679c\u8bbe\u7f6e\u4e86  OOMScore\uff0c\u5219\u5e94\u7528\u5230\u8fdb\u7a0b\u4e0a\u3002OOMScore \u8d8a\u4f4e\uff0c\u7cfb\u7edf\u5185\u5b58\u4e0d\u8db3\u65f6\u8d8a\u4e0d\u4f1a\u88ab kill<\/li>\n<li>\u5982\u679c\u8bbe\u7f6e\u4e86 containerd \u7684 Cgroup path\u3002\u5219\u4f1a\u5c06\u81ea\u5df1\u7684\u8fdb\u7a0b\u52a0\u5165\u5230 cgroup \u4e0b\u3002\u8fd9\u91cc\u8fd8\u4f1a\u5224\u65ad\u4f7f\u7528 cgroup v1 \u8fd8\u662f v2\u3002<\/li>\n<li>\u8bbe\u7f6e\u4e00\u7cfb\u5217\u8d85\u65f6\u53c2\u6570<\/li>\n<li>\u52a0\u8f7d plugin\uff0ccontainerd \u901a\u8fc7 plugin \u6765\u5212\u5206\u6a21\u5757\u3002<\/li>\n<li>\u901a\u8fc7\u8bbe\u7f6e\u7684 plugin \u76ee\u5f55\uff08\u9ed8\u8ba4\u5728 \/var\/lib\/containerd\/plugins\uff09\u6765\u52a0\u8f7d\u3002go1.8 \u4e4b\u540e\u5c31\u4e0d\u652f\u6301\u4e86\u3002<\/li>\n<li>\u6ce8\u518c content plugin\uff1acontainred \u67b6\u6784\u4e2d storage \u90e8\u5206\u7684 content\u3002\u8d1f\u8d23\u955c\u50cf\u7684\u5b58\u50a8<\/li>\n<li>\u6ce8\u518c metadata plugin\uff1a\u4f7f\u7528\u7684\u662f bolt \u8fd9\u4e2a\u5d4c\u5165\u5f0f\u7684 key\/value \u6570\u636e\u5e93\u3002\u4f9d\u8d56 content \u548c snapshot plugin\u3002<\/li>\n<li>\u6ce8\u518c proxy plugin: proxy plugin \u652f\u6301 content, snapshot \u4e24\u79cd\u7c7b\u578b\u3002\u76f8\u5f53\u4e8e\u8d77\u4e86\u4e00\u4e2a GRPC \u670d\u52a1\uff0c\u66ff\u6362\u6389\u5185\u7f6e\u7684 content, snapshot plugin\u3002<\/li>\n<li>\u8fd8\u6709\u5f88\u591a plugin \u662f\u5728\u5305\u7684 init \u65b9\u6cd5\u4e2d\u6ce8\u518c\u7684\n<ul>\n<li>\u5927\u91cf snapshot \u7684\u63d2\u4ef6: aufs, btrfs, devmapper, native, overlayfs, zfs<\/li>\n<li>diff \u63d2\u4ef6: walking<\/li>\n<li>GC \u63d2\u4ef6<\/li>\n<li>\u5927\u91cf service \u63d2\u4ef6\uff1aintrospection\uff0ccontainers\uff0ccontent\uff0cdiff\uff0cimages\uff0cleases\uff0cnamespaces\uff0csnapshots\uff0ctasks<\/li>\n<li>runtime \u63d2\u4ef6\uff1alinux\uff0ctask<\/li>\n<li>monitoring \u63d2\u4ef6\uff1acgroups<\/li>\n<li>internal \u63d2\u4ef6\uff1arestart\uff0copt<\/li>\n<li>GRPC \u63d2\u4ef6\uff1acontainers\uff0ccontent\uff0cdiff\uff0cevents\uff0chealthcheck\uff0cimages\uff0cleases\uff0cnamespaces\uff0csnapshots\uff0ctasks\uff0cversion\uff0cintrospection<\/li>\n<li>CRI \u63d2\u4ef6\uff1a\u5b9e\u73b0 CRI\uff0c\u63d0\u4f9b\u7ed9 kubelet \u8c03\u7528<\/li>\n<\/ul>\n<\/li>\n<li>diff \u6a21\u5757\u6ce8\u518c stream processor\uff0c\u652f\u6301\u4e24\u79cd<\/li>\n<li>application\/vnd.oci.image.layer.v1.tar+encrypted<\/li>\n<li>application\/vnd.oci.image.layer.v1.tar+gzip+encrypted<\/li>\n<li>\u542f\u52a8 TTRPC server\uff1a\/run\/containerd\/containerd.sock.ttrpc<\/li>\n<li>\u542f\u52a8 GRPC server\uff1a\/run\/containerd\/containerd.sock<\/li>\n<li>\u5982\u679c\u5f00\u542f\u4e86 TCP\uff0c\u8fd8\u4f1a\u5c06 GRPC server \u76d1\u542c\u5230 tcp \u4e0a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u6b64\u65f6\uff0ccontainerd \u5df2\u7ecf\u53ef\u4ee5\u5bf9\u5916\u63d0\u4f9b\u670d\u52a1\u4e86\u3002\u4e0b\u9762\u5bf9\u4e0a\u8ff0\u63d0\u5230\u7684\u4e00\u4e9b\u6982\u5ff5\u6216\u6a21\u5757\u505a\u4e2a\u7b80\u5355\u7684\u89e3\u91ca\uff1a<\/p>\n<ul>\n<li>service: GRPC \u670d\u52a1\u4f9d\u8d56\u4e8e\u5bf9\u5e94\u7684 service\u3002service \u662f\u5219\u7528\u6765\u5c01\u88c5\u5185\u90e8\u7684\u5b9e\u73b0\u3002<\/li>\n<li>TTRPC: TTRPC \u662f\u4e3a\u4f4e\u5185\u5b58\u73af\u5883\u505a\u7684\u4f18\u5316\uff0c\u901a\u8fc7\u6dd8\u6c70<code>net\/http<\/code>, <code>net\/http2<\/code> \u548c <code>grpc<\/code> \u5305\uff0c\u5b9e\u73b0\u4e86\u66f4\u8f7b\u91cf\u7684 framing protocol\uff0c\u5b9e\u73b0\u4e86\u66f4\u5c0f\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u4ee5\u53ca\u66f4\u5c11\u7684\u5e38\u9a7b\u5185\u5b58\u4f7f\u7528\u3002<\/li>\n<li>storage \u6a21\u5757\uff1a\u5305\u542b content, snapshot \u548c diff \u4e09\u4e2a\u5b50\u6a21\u5757\u3002\n<ul>\n<li>content: content \u662f\u8d1f\u8d23\u6574\u4e2a\u955c\u50cf\u7684\u5b58\u50a8\u6d41\u7a0b\u7684\u3002<\/li>\n<li>snapshot\uff1a\u4e3a\u4e86\u4fdd\u8bc1\u955c\u50cf\u5c42\u7684\u6570\u636e\u4e0d\u53ef\u53d8\uff0c\u6240\u4ee5\u5728\u8fd0\u884c\u5bb9\u5668\u65f6\u4f1a\u4ece layer \u4e2d\u521b\u5efa snapshot\u3002<\/li>\n<li>diff\uff1adiff \u6a21\u5757\u5b9e\u73b0\u4e86\u4e24\u4e2a\u529f\u80fd\uff1a diff \u548c apply\u3002diff  \u7528\u6765\u6bd4\u8f83\u4e0a\u5c42\u548c\u4e0b\u5c42\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u7136\u540e\u6309\u7167 OCI \u89c4\u8303\u5bf9\u8be5\u5c42\u6253\u5305\u3002apply \u7528\u6765\u6839\u636e\u5e95\u5c42\u7684\u8054\u5408\u6587\u4ef6\u7cfb\u7edf\uff0c\u5bf9\u67d0\u4e00\u5c42\u8fdb\u884c\u6302\u8f7d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>metadata \u6a21\u5757: \u5305\u542b images \u548c containers \u4e24\u4e2a\u5b50\u6a21\u677f\u3002\n<ul>\n<li>images: \u5b58\u50a8\u955c\u50cf\u76f8\u5173\u7684\u5143\u6570\u636e\u3002<\/li>\n<li>containers: \u5b58\u50a8\u5bb9\u5668\u76f8\u5173\u7684\u5143\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>tasks \u6a21\u5757\uff1a\u4e00\u4e2a container \u7684\u8fd0\u884c\u88ab\u62bd\u8c61\u6210\u4e00\u4e2a task<\/li>\n<li>event \u6a21\u5757\uff1a\u63d0\u4f9b\u4e86\u4e8b\u4ef6\u7684\u53d1\u5e03\u8ba2\u9605\u529f\u80fd\u3002\u7b2c\u4e09\u65b9\u53ef\u4ee5\u901a\u8fc7 event \u83b7\u53d6 containerd \u4e2d\u7684\u4e8b\u4ef6\uff0c\u6bd4\u5982\u955c\u50cf\u7684\u521b\u5efa\uff0c\u66f4\u65b0\uff0c\u5bb9\u5668\u7684\u521b\u5efa\uff0c\u5220\u9664\u7b49\u7b49\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6574\u4f53\u67b6\u6784\u56fe\u5982\u4e0b\uff1a \u4f7f\u7528 github.com\/urfave\/cli\u542f\u52a8\uff0c\u6709 command configCom &hellip; <a href=\"https:\/\/www.myway5.com\/index.php\/2021\/05\/20\/containerd-startup\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">containerd\u7684\u542f\u52a8\u6d41\u7a0b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"class_list":["post-887","post","type-post","status-publish","format-standard","hentry","category-container"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - 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property=\"og:site_name\" content=\"\u4e00\u53ea\u5b89\u9759\u7684\u732b\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-20T14:36:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-05T02:09:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.myway5.com\/wp-content\/uploads\/2021\/05\/architecture.png\" \/>\n<meta name=\"author\" content=\"jiangpengfei\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"jiangpengfei\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" 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