{"id":5344,"date":"2021-01-04T23:29:11","date_gmt":"2021-01-04T15:29:11","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5344"},"modified":"2022-03-19T02:05:28","modified_gmt":"2022-03-18T18:05:28","slug":"docker-%e4%bb%93%e5%ba%93","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5344","title":{"rendered":"Docker \u4ed3\u5e93"},"content":{"rendered":"<h3 data-nodeid=\\\"685\\\">Docker \u5bb9\u5668\u7684\u5b89\u5168\u95ee\u9898<\/h3>\n<h4 data-nodeid=\\\"686\\\">(1) Docker \u81ea\u8eab\u5b89\u5168<\/h4>\n<p data-nodeid=\\\"687\\\">Docker \u4f5c\u4e3a\u4e00\u6b3e\u5bb9\u5668\u5f15\u64ce\uff0c\u672c\u8eab\u4e5f\u4f1a\u5b58\u5728\u4e00\u4e9b\u5b89\u5168\u6f0f\u6d1e\uff0cCVE \u76ee\u524d\u5df2\u7ecf\u8bb0\u5f55\u4e86\u591a\u9879\u4e0e Docker \u76f8\u5173\u7684\u5b89\u5168\u6f0f\u6d1e\uff0c\u4e3b\u8981\u6709\u6743\u9650\u63d0\u5347\u3001\u4fe1\u606f\u6cc4\u9732\u7b49\u51e0\u7c7b\u5b89\u5168\u95ee\u9898\u3002\u5177\u4f53 Docker 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\u5c06\u7cfb\u7edf\u6743\u9650\u5206\u4e3a\u4e86\u591a\u4e2a Capabilities\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u5355\u72ec\u5730\u5f00\u542f\u6216\u5173\u95ed\uff0cCapabilities \u5b9e\u73b0\u4e86\u7cfb\u7edf\u66f4\u7ec6\u7c92\u5ea6\u7684\u8bbf\u95ee\u63a7\u5236\u3002<\/p>\n<p data-nodeid=\\\"718\\\">\u5bb9\u5668\u548c\u865a\u62df\u673a\u5728\u6743\u9650\u63a7\u5236\u4e0a\u8fd8\u662f\u6709\u4e00\u4e9b\u533a\u522b\u7684\uff0c\u5728\u865a\u62df\u673a\u5185\u6211\u4eec\u53ef\u4ee5\u8d4b\u4e88\u7528\u6237\u6240\u6709\u7684\u6743\u9650\uff0c\u4f8b\u5982\u8bbe\u7f6e cron \u5b9a\u65f6\u4efb\u52a1\u3001\u64cd\u4f5c\u5185\u6838\u6a21\u5757\u3001\u914d\u7f6e\u7f51\u7edc\u7b49\u6743\u9650\u3002\u800c\u5bb9\u5668\u5219\u9700\u8981\u9488\u5bf9\u6bcf\u4e00\u9879 Capabilities \u66f4\u7ec6\u7c92\u5ea6\u7684\u53bb\u63a7\u5236\u6743\u9650\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul data-nodeid=\\\"719\\\">\n<li data-nodeid=\\\"720\\\">\n<p data-nodeid=\\\"721\\\">cron \u5b9a\u65f6\u4efb\u52a1\u53ef\u4ee5\u5728\u5bb9\u5668\u5185\u8fd0\u884c\uff0c\u8bbe\u7f6e\u5b9a\u65f6\u4efb\u52a1\u7684\u6743\u9650\u4e5f\u4ec5\u9650\u4e8e\u5bb9\u5668\u5185\u90e8\uff1b<\/p>\n<\/li>\n<li data-nodeid=\\\"722\\\">\n<p data-nodeid=\\\"723\\\">\u7531\u4e8e\u5bb9\u5668\u662f\u5171\u4eab\u4e3b\u673a\u5185\u6838\u7684\uff0c\u56e0\u6b64\u5728\u5bb9\u5668\u5185\u90e8\u4e00\u822c\u4e0d\u5141\u8bb8\u76f4\u63a5\u64cd\u4f5c\u4e3b\u673a\u5185\u6838\uff1b<\/p>\n<\/li>\n<li data-nodeid=\\\"724\\\">\n<p data-nodeid=\\\"725\\\">\u5bb9\u5668\u7684\u7f51\u7edc\u7ba1\u7406\u5728\u5bb9\u5668\u5916\u90e8\uff0c\u8fd9\u5c31\u610f\u5473\u7740\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5728\u5bb9\u5668\u5185\u90e8\u662f\u4e0d\u9700\u8981\u6267\u884c<code data-backticks=\\\"1\\\" data-nodeid=\\\"805\\\">ifconfig<\/code>\u3001<code data-backticks=\\\"1\\\" data-nodeid=\\\"807\\\">route<\/code>\u7b49\u547d\u4ee4\u7684 \u3002<\/p>\n<\/li>\n<\/ul>\n<p data-nodeid=\\\"726\\\">\u7531\u4e8e\u5bb9\u5668\u53ef\u4ee5\u6309\u7167\u9700\u6c42\u9010\u9879\u6dfb\u52a0 Capabilities \u6743\u9650\uff0c\u56e0\u6b64\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5bb9\u5668\u5e76\u4e0d\u9700\u8981\u4e3b\u673a\u7684 root \u6743\u9650\uff0cDocker \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e5f\u662f\u4e0d\u5f00\u542f\u989d\u5916\u7279\u6743\u7684\u3002<\/p>\n<p data-nodeid=\\\"727\\\">\u6700\u540e\uff0c\u5728\u6267\u884c<code data-backticks=\\\"1\\\" data-nodeid=\\\"811\\\">docker run<\/code>\u547d\u4ee4\u542f\u52a8\u5bb9\u5668\u65f6\uff0c\u5982\u975e\u7279\u6b8a\u53ef\u63a7\u60c5\u51b5\uff0c&#8211;privileged \u53c2\u6570\u4e0d\u5141\u8bb8\u8bbe\u7f6e\u4e3a true\uff0c\u5176\u4ed6\u7279\u6b8a\u6743\u9650\u53ef\u4ee5\u4f7f\u7528 &#8211;cap-add \u53c2\u6570\uff0c\u6839\u636e\u4f7f\u7528\u573a\u666f\u9002\u5f53\u6dfb\u52a0\u76f8\u5e94\u7684\u6743\u9650\u3002<\/p>\n<p data-nodeid=\\\"728\\\"><strong data-nodeid=\\\"816\\\">\u4f7f\u7528\u5b89\u5168\u52a0\u56fa\u7ec4\u4ef6<\/strong><\/p>\n<p data-nodeid=\\\"729\\\">Linux \u7684 SELinux\u3001AppArmor\u3001GRSecurity \u7ec4\u4ef6\u90fd\u662f Docker \u5b98\u65b9\u63a8\u8350\u7684\u5b89\u5168\u52a0\u56fa\u7ec4\u4ef6\u3002\u4e0b\u9762\u6211\u5bf9\u8fd9\u4e09\u4e2a\u7ec4\u4ef6\u505a\u7b80\u5355\u4ecb\u7ecd\u3002<\/p>\n<ul data-nodeid=\\\"730\\\">\n<li data-nodeid=\\\"731\\\">\n<p data-nodeid=\\\"732\\\">SELinux (Secure Enhanced Linux): \u662f Linux \u7684\u4e00\u4e2a\u5185\u6838\u5b89\u5168\u6a21\u5757\uff0c\u63d0\u4f9b\u4e86\u5b89\u5168\u8bbf\u95ee\u7684\u7b56\u7565\u673a\u5236\uff0c\u901a\u8fc7\u8bbe\u7f6e SELinux \u7b56\u7565\u53ef\u4ee5\u5b9e\u73b0\u67d0\u4e9b\u8fdb\u7a0b\u5141\u8bb8\u8bbf\u95ee\u67d0\u4e9b\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li data-nodeid=\\\"733\\\">\n<p data-nodeid=\\\"734\\\">AppArmor: \u7c7b\u4f3c\u4e8e SELinux\uff0c\u4e5f\u662f\u4e00\u4e2a Linux \u7684\u5185\u6838\u5b89\u5168\u6a21\u5757\uff0c\u666e\u901a\u7684\u8bbf\u95ee\u63a7\u5236\u4ec5\u80fd\u63a7\u5236\u5230\u7528\u6237\u7684\u8bbf\u95ee\u6743\u9650\uff0c\u800c AppArmor \u53ef\u4ee5\u63a7\u5236\u5230\u7528\u6237\u7a0b\u5e8f\u7684\u8bbf\u95ee\u6743\u9650\u3002<\/p>\n<\/li>\n<li data-nodeid=\\\"735\\\">\n<p data-nodeid=\\\"736\\\">GRSecurity: \u662f\u4e00\u4e2a\u5bf9\u5185\u6838\u7684\u5b89\u5168\u6269\u5c55\uff0c\u53ef\u901a\u8fc7\u667a\u80fd\u8bbf\u95ee\u63a7\u5236\uff0c\u63d0\u4f9b\u5185\u5b58\u7834\u574f\u9632\u5fa1\uff0c\u6587\u4ef6\u7cfb\u7edf\u589e\u5f3a\u7b49\u591a\u79cd\u9632\u5fa1\u5f62\u5f0f\u3002<\/p>\n<\/li>\n<\/ul>\n<p data-nodeid=\\\"737\\\">\u8fd9\u4e09\u4e2a\u7ec4\u4ef6\u53ef\u4ee5\u9650\u5236\u4e00\u4e2a\u5bb9\u5668\u5bf9\u4e3b\u673a\u7684\u5185\u6838\u6216\u5176\u4ed6\u8d44\u6e90\u7684\u8bbf\u95ee\u63a7\u5236\u3002\u76ee\u524d\uff0c\u5bb9\u5668\u62a5\u544a\u7684\u4e00\u4e9b\u5b89\u5168\u6f0f\u6d1e\u4e2d\uff0c\u5f88\u591a\u90fd\u662f\u901a\u8fc7\u5bf9\u5185\u6838\u8fdb\u884c\u52a0\u5f3a\u8bbf\u95ee\u548c\u9694\u79bb\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n<p data-nodeid=\\\"738\\\"><strong data-nodeid=\\\"825\\\">\u8d44\u6e90\u9650\u5236<\/strong><\/p>\n<p data-nodeid=\\\"739\\\">\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5efa\u8bae\u6bcf\u4e2a\u5bb9\u5668\u90fd\u6dfb\u52a0\u76f8\u5e94\u7684\u8d44\u6e90\u9650\u5236\u3002\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e9b\u6267\u884c<code data-backticks=\\\"1\\\" data-nodeid=\\\"827\\\">docker run<\/code>\u547d\u4ee4\u542f\u52a8\u5bb9\u5668\u65f6\u53ef\u4ee5\u4f20\u9012\u7684\u8d44\u6e90\u9650\u5236\u53c2\u6570\uff1a<\/p>\n<div class=\\\"course-code-area\\\">\n<div class=\\\"copy-btn\\\">\n<div class=\\\"copy-icon\\\"><\/div>\n<p>\u590d\u5236\u4ee3\u7801<\/p><\/div>\n<pre><code data-language=\\\"yaml\\\"><\/code><\/pre>\n<ol>\n<li>\n<div class=\\\"code-word\\\"><span class=\\\"hljs-string\\\">&#8211;cpus<\/span> <span class=\\\"hljs-string\\\">\u9650\u5236<\/span> <span class=\\\"hljs-string\\\">CPU<\/span> <span class=\\\"hljs-string\\\">\u914d\u989d<\/span><\/div>\n<\/li>\n<li>\n<div class=\\\"code-word\\\"><span class=\\\"hljs-string\\\">-m,<\/span> <span class=\\\"hljs-string\\\">&#8211;memory<\/span> <span class=\\\"hljs-string\\\">\u9650\u5236\u5185\u5b58\u914d\u989d<\/span><\/div>\n<\/li>\n<li>\n<div class=\\\"code-word\\\"><span class=\\\"hljs-string\\\">&#8211;pids-limit<\/span> <span class=\\\"hljs-string\\\">\u9650\u5236\u5bb9\u5668\u7684<\/span> <span class=\\\"hljs-string\\\">PID<\/span> <span class=\\\"hljs-string\\\">\u4e2a\u6570<\/span><\/div>\n<\/li>\n<\/ol>\n<pre><code data-language=\\\"yaml\\\"><\/code><\/pre>\n<\/div>\n<p data-nodeid=\\\"741\\\">\u4f8b\u5982\u6211\u60f3\u8981\u542f\u52a8\u4e00\u4e2a 1 \u6838 2G \u7684\u5bb9\u5668\uff0c\u5e76\u4e14\u9650\u5236\u5728\u5bb9\u5668\u5185\u6700\u591a\u53ea\u80fd\u521b\u5efa 1000 \u4e2a PID\uff0c\u542f\u52a8\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<div class=\\\"course-code-area\\\">\n<div class=\\\"copy-btn\\\">\n<div class=\\\"copy-icon\\\"><\/div>\n<p>\u590d\u5236\u4ee3\u7801<\/p><\/div>\n<pre><code data-language=\\\"shell\\\"><\/code><\/pre>\n<ol>\n<li>\n<div class=\\\"code-word\\\"><span class=\\\"hljs-meta\\\">$<\/span><span class=\\\"bash\\\"> docker run -it &#8211;cpus=1 -m=2048m &#8211;pids-limit=1000 busybox sh<\/span><\/div>\n<\/li>\n<\/ol>\n<pre><code data-language=\\\"shell\\\"><\/code><\/pre>\n<\/div>\n<p data-nodeid=\\\"743\\\">\u63a8\u8350\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u9650\u5236 CPU\u3001\u5185\u5b58\u3001PID \u7b49\u8d44\u6e90\uff0c\u8fd9\u6837\u5373\u4fbf\u5e94\u7528\u7a0b\u5e8f\u6709\u6f0f\u6d1e\uff0c\u4e5f\u4e0d\u4f1a\u5bfc\u81f4\u4e3b\u673a\u7684\u8d44\u6e90\u5b8c\u5168\u8017\u5c3d\uff0c\u6700\u5927\u9650\u5ea6\u964d\u4f4e\u5b89\u5168\u98ce\u9669\u3002<\/p>\n<h4 data-nodeid=\\\"744\\\">(4) \u4f7f\u7528\u5b89\u5168\u5bb9\u5668<\/h4>\n<p data-nodeid=\\\"745\\\">\u5bb9\u5668\u6709\u7740\u8f7b\u4fbf\u5feb\u901f\u542f\u52a8\u7684\u4f18\u70b9\uff0c\u865a\u62df\u673a\u6709\u7740\u5b89\u5168\u9694\u79bb\u7684\u4f18\u70b9\uff0c\u6709\u6ca1\u6709\u4e00\u79cd\u6280\u672f\u53ef\u4ee5\u517c\u987e\u4e24\u8005\u7684\u4f18\u70b9\uff0c\u505a\u5230\u65e2\u8f7b\u91cf\u53c8\u5b89\u5168\u5462\uff1f<\/p>\n<p data-nodeid=\\\"746\\\">\u7b54\u6848\u662f\u6709\uff0c\u90a3\u5c31\u662f\u5b89\u5168\u5bb9\u5668\u3002\u5b89\u5168\u5bb9\u5668\u662f\u76f8\u8f83\u4e8e\u666e\u901a\u5bb9\u5668\u7684\uff0c\u5b89\u5168\u5bb9\u5668\u4e0e\u666e\u901a\u5bb9\u5668\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\uff0c\u5b89\u5168\u5bb9\u5668\u4e2d\u7684\u6bcf\u4e2a\u5bb9\u5668\u90fd\u8fd0\u884c\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u5fae\u578b\u865a\u62df\u673a\u4e2d\uff0c\u62e5\u6709\u72ec\u7acb\u7684\u64cd\u4f5c\u7cfb\u7edf\u548c\u5185\u6838\uff0c\u5e76\u4e14\u6709\u865a\u62df\u5316\u5c42\u7684\u5b89\u5168\u9694\u79bb\u3002<\/p>\n<p data-nodeid=\\\"747\\\">\u5b89\u5168\u5bb9\u5668\u76ee\u524d\u63a8\u8350\u7684\u6280\u672f\u65b9\u6848\u662f\u00a0<a href=\\\"https:\/\/github.com\/kata-containers\\\" data-nodeid=\\\"837\\\">Kata Containers<\/a>\uff0cKata Container \u5e76\u4e0d\u5305\u542b\u4e00\u4e2a\u5b8c\u6574\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u53ea\u6709\u4e00\u4e2a\u7cbe\u7b80\u7248\u7684 Guest Kernel \u8fd0\u884c\u7740\u5bb9\u5668\u672c\u8eab\u7684\u5e94\u7528\uff0c\u5e76\u4e14\u901a\u8fc7\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\uff0c\u5c3d\u91cf\u5171\u4eab\u53ef\u4ee5\u5171\u4eab\u7684\u5185\u5b58\u6765\u8fdb\u4e00\u6b65\u51cf\u5c11\u5185\u5b58\u7684\u5f00\u9500\u3002\u53e6\u5916\uff0cKata Container \u5b9e\u73b0\u4e86 OCI \u89c4\u8303\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 Docker \u7684\u955c\u50cf\u542f\u52a8 Kata \u5bb9\u5668\uff0c\u5177\u6709\u5f00\u9500\u66f4\u5c0f\u3001\u79d2\u7ea7\u542f\u52a8\u3001\u5b89\u5168\u9694\u79bb\u7b49\u8bb8\u591a\u4f18\u70b9\u3002<\/p>\n<h3 data-nodeid=\\\"748\\\">\u7ed3\u8bed<\/h3>\n<p data-nodeid=\\\"749\\\">\u5bb9\u5668\u6280\u672f\u5e26\u6765\u7684\u6280\u672f\u9769\u65b0\u662f\u7a7a\u524d\u7684\uff0c\u4f46\u662f\u968f\u4e4b\u800c\u6765\u7684\u5bb9\u5668\u5b89\u5168\u95ee\u9898\u4e5f\u662f\u6211\u4eec\u5fc5\u987b\u8981\u8db3\u591f\u91cd\u89c6\u7684\u3002\u672c\u8bfe\u65f6\u89e3\u51b3 Docker \u5b89\u5168\u95ee\u9898\u7684\u7cbe\u534e\u6211\u5e2e\u4f60\u603b\u7ed3\u5982\u4e0b\uff1a<\/p>\n<p data-nodeid=\\\"750\\\"><img src=\\\"https:\/\/s0.lgstatic.com\/i\/image\/M00\/51\/28\/Ciqc1F9keVSAHuDTAADaB11MKbU710.png\\\" alt=\\\"Lark20200918-170906.png\\\" data-nodeid=\\\"843\\\" \/><\/p>\n<p data-nodeid=\\\"751\\\">\u5230\u6b64\uff0c\u76f8\u4fe1\u4f60\u5df2\u7ecf\u4e86\u89e3\u4e86 Docker \u4e0e\u865a\u62df\u673a\u7684\u672c\u8d28\u533a\u522b\uff0c\u4e5f\u77e5\u9053\u4e86\u5bb9\u5668\u76ee\u524d\u5b58\u5728\u7684\u4e00\u4e9b\u5b89\u5168\u9690\u60a3\u4ee5\u53ca\u5982\u4f55\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u5c3d\u91cf\u907f\u514d\u8fd9\u4e9b\u5b89\u5168\u9690\u60a3<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Docker \u5bb9\u5668\u7684\u5b89\u5168\u95ee\u9898 (1) Docker \u81ea\u8eab\u5b89\u5168 Docker \u4f5c\u4e3a\u4e00\u6b3e\u5bb9\u5668\u5f15\u64ce\uff0c\u672c\u8eab\u4e5f\u4f1a\u5b58\u5728\u4e00\u4e9b &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5344\"> <span class=\"screen-reader-text\">Docker \u4ed3\u5e93<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[93],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"Docker \u5bb9\u5668\u7684\u5b89\u5168\u95ee\u9898 (1) Docker \u81ea\u8eab\u5b89\u5168 Docker \u4f5c\u4e3a\u4e00\u6b3e\u5bb9\u5668\u5f15\u64ce\uff0c\u672c\u8eab\u4e5f\u4f1a\u5b58\u5728\u4e00\u4e9b&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5344"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5344"}],"version-history":[{"count":1,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5344\/revisions"}],"predecessor-version":[{"id":5515,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5344\/revisions\/5515"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5344"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}