{"id":1574,"date":"2020-06-09T15:43:32","date_gmt":"2020-06-09T07:43:32","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1574"},"modified":"2020-06-09T15:43:32","modified_gmt":"2020-06-09T07:43:32","slug":"kubernetes-pod%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1574","title":{"rendered":"Kubernetes Pod\u4ecb\u7ecd"},"content":{"rendered":"<header class=\\\"entry-header\\\">\n<h1 class=\\\"entry-title\\\">Kubernetes Pod<\/h1>\n<\/header>\n<div class=\\\"entry-content\\\">\n<div id=\\\"toc_container\\\" class=\\\"no_bullets\\\">\n<ul class=\\\"toc_list\\\">\n<li><span class=\\\"toc_number toc_depth_1\\\">1<\/span> Pod\n<ul>\n<li><span class=\\\"toc_number toc_depth_2\\\">1.1<\/span>\u00a0Pods\u5982\u4f55\u7ba1\u7406\u591a\u4e2a\u5bb9\u5668\n<ul>\n<li><span class=\\\"toc_number toc_depth_3\\\">1.1.1<\/span>\u00a0\u7f51\u7edc<\/li>\n<li><span class=\\\"toc_number toc_depth_3\\\">1.1.2<\/span>\u00a0\u5b58\u50a8<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><span class=\\\"toc_number toc_depth_1\\\">2<\/span>\u00a0\u4f7f\u7528Pod\n<ul>\n<li><span class=\\\"toc_number toc_depth_2\\\">2.1<\/span>\u00a0Pod\u548cController<\/li>\n<\/ul>\n<\/li>\n<li><span class=\\\"toc_number toc_depth_1\\\">3<\/span>\u00a0Pod\u6a21\u677f<\/li>\n<\/ul>\n<\/div>\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecdPod\uff0c\u4e86Kubernetes\u5bf9\u8c61\u6a21\u578b\u4e2d\u53ef\u90e8\u7f72\u7684\u6700\u5c0f\u5bf9\u8c61\u3002<\/p>\n<h2 id=\\\"understanding-pods\\\"><span id=\\\"Pod\\\">Pod<\/span><\/h2>\n<p>Pod\u662fKubernetes\u521b\u5efa\u6216\u90e8\u7f72\u7684\u6700\u5c0f\/\u6700\u7b80\u5355\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u4e00\u4e2aPod\u4ee3\u8868\u96c6\u7fa4\u4e0a\u6b63\u5728\u8fd0\u884c\u7684\u4e00\u4e2a\u8fdb\u7a0b\u3002<br \/>\n\u4e00\u4e2aPod\u5c01\u88c5\u4e00\u4e2a\u5e94\u7528\u5bb9\u5668\uff08\u4e5f\u53ef\u4ee5\u6709\u591a\u4e2a\u5bb9\u5668\uff09\uff0c\u5b58\u50a8\u8d44\u6e90\u3001\u4e00\u4e2a\u72ec\u7acb\u7684\u7f51\u7edcIP\u4ee5\u53ca\u7ba1\u7406\u63a7\u5236\u5bb9\u5668\u8fd0\u884c\u65b9\u5f0f\u7684\u7b56\u7565\u9009\u9879\u3002Pod\u4ee3\u8868\u90e8\u7f72\u7684\u4e00\u4e2a\u5355\u4f4d\uff1aKubernetes\u4e2d\u5355\u4e2a\u5e94\u7528\u7684\u5b9e\u4f8b\uff0c\u5b83\u53ef\u80fd\u7531\u5355\u4e2a\u5bb9\u5668\u6216\u591a\u4e2a\u5bb9\u5668\u5171\u4eab\u7ec4\u6210\u7684\u8d44\u6e90\u3002<\/p>\n<blockquote><p>Docker\u662fKubernetes Pod\u4e2d\u6700\u5e38\u89c1\u7684runtime\u00a0\uff0cPods\u4e5f\u652f\u6301\u5176\u4ed6\u5bb9\u5668runtimes\u3002<\/p><\/blockquote>\n<p>Kubernetes\u4e2d\u7684Pod\u4f7f\u7528\u53ef\u5206\u4e24\u79cd\u4e3b\u8981\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>Pod\u4e2d\u8fd0\u884c\u4e00\u4e2a\u5bb9\u5668\u3002\u201cone-container-per-Pod\u201d\u6a21\u5f0f\u662fKubernetes\u6700\u5e38\u89c1\u7684\u7528\u6cd5;\u00a0\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u4ee5\u5c06Pod\u89c6\u4e3a\u5355\u4e2a\u5c01\u88c5\u7684\u5bb9\u5668\uff0c\u4f46\u662fKubernetes\u662f\u76f4\u63a5\u7ba1\u7406Pod\u800c\u4e0d\u662f\u5bb9\u5668\u3002<\/li>\n<li>Pods\u4e2d\u8fd0\u884c\u591a\u4e2a\u9700\u8981\u4e00\u8d77\u5de5\u4f5c\u7684\u5bb9\u5668\u3002Pod\u53ef\u4ee5\u5c01\u88c5\u7d27\u5bc6\u8026\u5408\u7684\u5e94\u7528\uff0c\u5b83\u4eec\u9700\u8981\u7531\u591a\u4e2a\u5bb9\u5668\u7ec4\u6210\uff0c\u5b83\u4eec\u4e4b\u95f4\u80fd\u591f\u5171\u4eab\u8d44\u6e90\uff0c\u8fd9\u4e9b\u5bb9\u5668\u53ef\u4ee5\u5f62\u6210\u4e00\u4e2a\u5355\u4e00\u7684\u5185\u90e8service\u5355\u4f4d &#8211; \u4e00\u4e2a\u5bb9\u5668\u5171\u4eab\u6587\u4ef6\uff0c\u53e6\u4e00\u4e2a\u201csidecar\u201d\u5bb9\u5668\u6765\u66f4\u65b0\u8fd9\u4e9b\u6587\u4ef6\u3002Pod\u5c06\u8fd9\u4e9b\u5bb9\u5668\u7684\u5b58\u50a8\u8d44\u6e90\u4f5c\u4e3a\u4e00\u4e2a\u5b9e\u4f53\u6765\u7ba1\u7406\u3002<\/li>\n<\/ul>\n<p>\u6bcf\u4e2aPod\u90fd\u662f\u8fd0\u884c\u5e94\u7528\u7684\u5355\u4e2a\u5b9e\u4f8b\uff0c\u5982\u679c\u9700\u8981\u6c34\u5e73\u6269\u5c55\u5e94\u7528\uff08\u4f8b\u5982\uff0c\u8fd0\u884c\u591a\u4e2a\u5b9e\u4f8b\uff09\uff0c\u5219\u5e94\u8be5\u4f7f\u7528\u591a\u4e2aPods\uff0c\u6bcf\u4e2a\u5b9e\u4f8b\u4e00\u4e2aPod\u3002\u5728Kubernetes\u4e2d\uff0c\u8fd9\u6837\u901a\u5e38\u79f0\u4e3aReplication\u3002Replication\u7684Pod\u901a\u5e38\u7531Controller\u521b\u5efa\u548c\u7ba1\u7406\u3002<\/p>\n<h3 id=\\\"how-pods-manage-multiple-containers\\\"><span id=\\\"Pods\\\">Pods\u5982\u4f55\u7ba1\u7406\u591a\u4e2a\u5bb9\u5668<\/span><\/h3>\n<p>Pods\u7684\u8bbe\u8ba1\u53ef\u7528\u4e8e\u652f\u6301\u591a\u8fdb\u7a0b\u7684\u534f\u540c\u5de5\u4f5c\uff08\u4f5c\u4e3a\u5bb9\u5668\uff09\uff0c\u5f62\u6210\u4e00\u4e2acohesive\u7684Service\u5355\u4f4d\u3002Pod\u4e2d\u7684\u5bb9\u5668\u5728\u96c6\u7fa4\u4e2dNode\u4e0a\u88ab\u81ea\u52a8\u5206\u914d\uff0c\u5bb9\u5668\u4e4b\u95f4\u53ef\u4ee5\u5171\u4eab\u8d44\u6e90\u3001\u7f51\u7edc\u548c\u76f8\u4e92\u4f9d\u8d56\u5173\u7cfb\uff0c\u5e76\u540c\u65f6\u88ab\u8c03\u5ea6\u4f7f\u7528\u3002<br \/>\n\u8bf7\u6ce8\u610f\uff0c\u5728\u5355\u4e2aPod\u4e2d\u5171\u540c\u7ba1\u7406\u591a\u4e2a\u5bb9\u5668\u662f\u4e00\u4e2a\u76f8\u5bf9\u9ad8\u7ea7\u7684\u7528\u6cd5\uff0c\u5e94\u8be5\u53ea\u6709\u5728\u5bb9\u5668\u7d27\u5bc6\u8026\u5408\u7684\u7279\u6b8a\u5b9e\u4f8b\u4e2d\u4f7f\u7528\u6b64\u6a21\u5f0f\u3002\u4f8b\u5982\uff0c\u6709\u4e00\u4e2a\u5bb9\u5668\u88ab\u7528\u4f5cWEB\u670d\u52a1\u5668\uff0c\u7528\u4e8e\u5171\u4eabvolume\uff0c\u4ee5\u53ca\u4e00\u4e2a\u5355\u72ec\u201csidecar\u201d\u5bb9\u5668\u9700\u8981\u4ece\u8fdc\u7a0b\u83b7\u53d6\u8d44\u6e90\u6765\u66f4\u65b0\u8fd9\u4e9b\u6587\u4ef6\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br \/>\n<img src=\\\"https:\/\/d33wubrfki0l68.cloudfront.net\/aecab1f649bc640ebef1f05581bfcc91a48038c4\/728d6\/images\/docs\/pod.svg\\\" alt=\\\"pod diagram\\\" \/><br \/>\nPods\u63d0\u4f9b\u4e24\u79cd\u5171\u4eab\u8d44\u6e90\uff1a\u7f51\u7edc\u548c\u5b58\u50a8\u3002<\/p>\n<h4 id=\\\"networking\\\"><span id=\\\"i\\\">\u7f51\u7edc<\/span><\/h4>\n<p>\u6bcf\u4e2aPod\u88ab\u5206\u914d\u4e00\u4e2a\u72ec\u7acb\u7684IP\u5730\u5740\uff0cPod\u4e2d\u7684\u6bcf\u4e2a\u5bb9\u5668\u5171\u4eab\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\uff0c\u5305\u62ecIP\u5730\u5740\u548c\u7f51\u7edc\u7aef\u53e3\u3002Pod\u5185\u7684\u5bb9\u5668\u53ef\u4ee5\u4f7f\u7528localhost\u76f8\u4e92\u901a\u4fe1\u3002\u5f53Pod\u4e2d\u7684\u5bb9\u5668\u4e0ePod\u00a0\u5916\u90e8\u901a\u4fe1\u65f6\uff0c\u4ed6\u4eec\u5fc5\u987b\u534f\u8c03\u5982\u4f55\u4f7f\u7528\u5171\u4eab\u7f51\u7edc\u8d44\u6e90\uff08\u5982\u7aef\u53e3\uff09\u3002<\/p>\n<h4 id=\\\"storage\\\"><span id=\\\"i-2\\\">\u5b58\u50a8<\/span><\/h4>\n<p>Pod\u53ef\u4ee5\u6307\u5b9a\u4e00\u7ec4\u5171\u4eab\u5b58\u50a8<em>volumes<\/em>\u3002Pod\u4e2d\u7684\u6240\u6709\u5bb9\u5668\u90fd\u53ef\u4ee5\u8bbf\u95ee\u5171\u4eab<em>volumes<\/em>\uff0c\u5141\u8bb8\u8fd9\u4e9b\u5bb9\u5668\u5171\u4eab\u6570\u636e\u3002<em>volumes\u00a0<\/em>\u8fd8\u7528\u4e8ePod\u4e2d\u7684\u6570\u636e\u6301\u4e45\u5316\uff0c\u4ee5\u9632\u5176\u4e2d\u4e00\u4e2a\u5bb9\u5668\u9700\u8981\u91cd\u65b0\u542f\u52a8\u800c\u4e22\u5931\u6570\u636e\u3002<\/p>\n<h2 id=\\\"\u4f7f\u7528pod\\\"><span id=\\\"Pod-2\\\">\u4f7f\u7528Pod<\/span><\/h2>\n<p class=\\\"comments-section\\\">\u4f60\u5f88\u5c11\u4f1a\u76f4\u63a5\u5728kubernetes\u4e2d\u521b\u5efa\u5355\u4e2aPod\u3002\u56e0\u4e3aPod\u7684\u751f\u547d\u5468\u671f\u662f\u77ed\u6682\u7684\uff0c\u7528\u540e\u5373\u711a\u7684\u5b9e\u4f53\u3002\u5f53Pod\u88ab\u521b\u5efa\u540e\uff08\u4e0d\u8bba\u662f\u7531\u4f60\u76f4\u63a5\u521b\u5efa\u8fd8\u662f\u88ab\u5176\u4ed6Controller\uff09\uff0c\u90fd\u4f1a\u88abKuberentes\u8c03\u5ea6\u5230\u96c6\u7fa4\u7684Node\u4e0a\u3002\u76f4\u5230Pod\u7684\u8fdb\u7a0b\u7ec8\u6b62\u3001\u88ab\u5220\u6389\u3001\u56e0\u4e3a\u7f3a\u5c11\u8d44\u6e90\u800c\u88ab\u9a71\u9010\u3001\u6216\u8005Node\u6545\u969c\u4e4b\u524d\u8fd9\u4e2aPod\u90fd\u4f1a\u4e00\u76f4\u4fdd\u6301\u5728\u90a3\u4e2aNode\u4e0a\u3002<\/p>\n<blockquote>\n<p class=\\\"comments-section\\\">\u6ce8\u610f\uff1a\u91cd\u542fPod\u4e2d\u7684\u5bb9\u5668\u8ddf\u91cd\u542fPod\u4e0d\u662f\u4e00\u56de\u4e8b\u3002Pod\u53ea\u63d0\u4f9b\u5bb9\u5668\u7684\u8fd0\u884c\u73af\u5883\u5e76\u4fdd\u6301\u5bb9\u5668\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u91cd\u542f\u5bb9\u5668\u4e0d\u4f1a\u9020\u6210Pod\u91cd\u542f\u3002<\/p>\n<\/blockquote>\n<p class=\\\"comments-section\\\">Pod\u4e0d\u4f1a\u81ea\u6108\u3002\u5982\u679cPod\u8fd0\u884c\u7684Node\u6545\u969c\uff0c\u6216\u8005\u662f\u8c03\u5ea6\u5668\u672c\u8eab\u6545\u969c\uff0c\u8fd9\u4e2aPod\u5c31\u4f1a\u88ab\u5220\u9664\u3002\u540c\u6837\u7684\uff0c\u5982\u679cPod\u6240\u5728Node\u7f3a\u5c11\u8d44\u6e90\u6216\u8005Pod\u5904\u4e8e\u7ef4\u62a4\u72b6\u6001\uff0cPod\u4e5f\u4f1a\u88ab\u9a71\u9010\u3002Kubernetes\u4f7f\u7528\u66f4\u9ad8\u7ea7\u7684\u79f0\u4e3aController\u7684\u62bd\u8c61\u5c42\uff0c\u6765\u7ba1\u7406Pod\u5b9e\u4f8b\u3002\u867d\u7136\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Pod\uff0c\u4f46\u662f\u5728Kubernetes\u4e2d\u901a\u5e38\u662f\u4f7f\u7528Controller\u6765\u7ba1\u7406Pod\u7684\u3002<\/p>\n<h3 id=\\\"pod\u548ccontroller\\\"><span id=\\\"PodController\\\">Pod\u548cController<\/span><\/h3>\n<p class=\\\"comments-section\\\">Controller\u53ef\u4ee5\u521b\u5efa\u548c\u7ba1\u7406\u591a\u4e2aPod\uff0c\u63d0\u4f9b\u526f\u672c\u7ba1\u7406\u3001\u6eda\u52a8\u5347\u7ea7\u548c\u96c6\u7fa4\u7ea7\u522b\u7684\u81ea\u6108\u80fd\u529b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u4e2aNode\u6545\u969c\uff0cController\u5c31\u80fd\u81ea\u52a8\u5c06\u8be5\u8282\u70b9\u4e0a\u7684Pod\u8c03\u5ea6\u5230\u5176\u4ed6\u5065\u5eb7\u7684Node\u4e0a\u3002<\/p>\n<p class=\\\"comments-section\\\">\u5305\u542b\u4e00\u4e2a\u6216\u8005\u591a\u4e2aPod\u7684Controller\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li>Deployment<\/li>\n<li>StatefulSet<\/li>\n<li>DaemonSet<\/li>\n<\/ul>\n<p class=\\\"comments-section\\\">\u901a\u5e38\uff0cController\u4f1a\u7528\u4f60\u63d0\u4f9b\u7684Pod Template\u6765\u521b\u5efa\u76f8\u5e94\u7684Pod\u3002<\/p>\n<h2 id=\\\"pod-templates\\\"><span id=\\\"Pod-3\\\">Pod\u6a21\u677f<\/span><\/h2>\n<p class=\\\"comments-section\\\">Pod\u6a21\u677f\u662f\u5305\u542b\u4e86\u5176\u4ed6\u5bf9\u8c61\uff08\u5982Replication Controllers\uff0cJobs\u548c\u00a0DaemonSets\uff09\u4e2d\u7684pod\u5b9a\u4e49 \u3002Controllers\u63a7\u5236\u5668\u4f7f\u7528Pod\u6a21\u677f\u6765\u521b\u5efa\u5b9e\u9645\u9700\u8981\u7684pod\u3002<\/p>\n<p>pod\u6a21\u677f\u7c7b\u4f3ccookie cutters\u3002\u201c\u4e00\u65e6\u997c\u5e72\u88ab\u5207\u6389\uff0c\u997c\u5e72\u548c\u5200\u5c06\u6ca1\u6709\u5173\u7cfb\u201d\u3002\u968f\u540e\u5bf9\u6a21\u677f\u7684\u540e\u7eed\u66f4\u6539\u751a\u81f3\u5207\u6362\u5230\u65b0\u6a21\u677f\u5bf9\u5df2\u521b\u5efa\u7684pod\u5e76\u6ca1\u6709\u4efb\u4f55\u7684\u5f71\u54cd\u3002\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Kubernetes Pod 1 Pod 1.1\u00a0Pods\u5982\u4f55\u7ba1\u7406\u591a\u4e2a\u5bb9\u5668 1.1.1\u00a0\u7f51\u7edc 1.1.2\u00a0\u5b58\u50a8 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1574\"> <span class=\"screen-reader-text\">Kubernetes Pod\u4ecb\u7ecd<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[104,123],"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":2,"uagb_excerpt":"Kubernetes Pod 1 Pod 1.1\u00a0Pods\u5982\u4f55\u7ba1\u7406\u591a\u4e2a\u5bb9\u5668 1.1.1\u00a0\u7f51\u7edc 1.1.2\u00a0\u5b58\u50a8&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1574"}],"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=1574"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1574\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1574"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}