{"id":1586,"date":"2020-06-09T18:10:03","date_gmt":"2020-06-09T10:10:03","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1586"},"modified":"2020-06-09T18:10:03","modified_gmt":"2020-06-09T10:10:03","slug":"kubernetes-%e5%9e%83%e5%9c%be%e6%94%b6%e9%9b%86%e5%99%a8","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1586","title":{"rendered":"Kubernetes \u5783\u573e\u6536\u96c6"},"content":{"rendered":"<header class=\\\"entry-header\\\"><\/header>\n<div class=\\\"entry-content\\\">\n<div id=\\\"toc_container\\\" class=\\\"no_bullets\\\">\n<span style=\\\"font-size: 1rem;\\\">Kubernetes \u5783\u573e\u6536\u96c6\u5668\u7684\u89d2\u8272\u662f\u5220\u9664\u6307\u5b9a\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u66fe\u7ecf\u6709\u4f46\u4ee5\u540e\u4e0d\u518d\u62e5\u6709 Owner \u4e86\u3002<\/span>\n<\/div>\n<p>\u6ce8\u610f\uff1a\u5783\u573e\u6536\u96c6\u662f beta \u7279\u6027\uff0c\u5728 Kubernetes 1.4 \u53ca\u4ee5\u4e0a\u7248\u672c\u9ed8\u8ba4\u542f\u7528\u3002<\/p>\n<h2 id=\\\"owner-\u548c-dependent\\\"><span id=\\\"Owner_Dependent\\\">Owner \u548c Dependent<\/span><\/h2>\n<p>\u4e00\u4e9b Kubernetes \u5bf9\u8c61\u662f\u5176\u5b83\u4e00\u4e9b\u7684 Owner\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a ReplicaSet \u662f\u4e00\u7ec4 Pod \u7684 Owner\u3002\u5177\u6709 Owner \u7684\u5bf9\u8c61\u88ab\u79f0\u4e3a\u662f Owner \u7684&nbsp;Dependent\u3002\u6bcf\u4e2a Dependent \u5bf9\u8c61\u5177\u6709\u4e00\u4e2a\u6307\u5411\u5176\u6240\u5c5e\u5bf9\u8c61\u7684&nbsp;metadata.ownerReferences&nbsp;\u5b57\u6bb5\u3002<br \/>\n\u6709\u65f6\uff0cKubernetes \u4f1a\u81ea\u52a8\u8bbe\u7f6e&nbsp;ownerReference&nbsp;\u7684\u503c\u3002\u4f8b\u5982\uff0c\u5f53\u521b\u5efa\u4e00\u4e2a ReplicaSet \u65f6\uff0cKubernetes \u81ea\u52a8\u8bbe\u7f6e ReplicaSet \u4e2d\u6bcf\u4e2a Pod \u7684&nbsp;ownerReference&nbsp;\u5b57\u6bb5\u503c\u3002\u5728 1.6 \u7248\u672c\uff0cKubernetes \u4f1a\u81ea\u52a8\u4e3a\u4e00\u4e9b\u5bf9\u8c61\u8bbe\u7f6e&nbsp;ownerReference&nbsp;\u7684\u503c\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u662f\u7531 ReplicationController\u3001ReplicaSet\u3001StatefulSet\u3001DaemonSet \u548c Deployment \u6240\u521b\u5efa\u6216\u7ba1\u7406\u3002<br \/>\n\u4e5f\u53ef\u4ee5\u901a\u8fc7\u624b\u52a8\u8bbe\u7f6e&nbsp;ownerReference&nbsp;\u7684\u503c\uff0c\u6765\u6307\u5b9a Owner \u548c Dependent \u4e4b\u95f4\u7684\u5173\u7cfb\u3002<br \/>\n\u8fd9\u6709\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\uff0c\u8868\u793a\u4e00\u4e2a\u5177\u6709 3 \u4e2a Pod \u7684 ReplicaSet\uff1a<\/p>\n<pre>apiVersion: extensions\/v1beta1\nkind: ReplicaSet\nmetadata:\n  name: my-repset\nspec:\n  replicas: 3\n  selector:\n    matchLabels:\n      pod-is-for: garbage-collection-example\n  template:\n    metadata:\n      labels:\n        pod-is-for: garbage-collection-example\n    spec:\n      containers:\n      - name: nginx\n        image: nginx\n<\/pre>\n<p>\u5982\u679c\u521b\u5efa\u8be5 ReplicaSet\uff0c\u7136\u540e\u67e5\u770b Pod \u7684 metadata \u5b57\u6bb5\uff0c\u80fd\u591f\u770b\u5230 OwnerReferences \u5b57\u6bb5\uff1a<\/p>\n<pre>kubectl create -f https:\/\/k8s.io\/docs\/concepts\/abstractions\/controllers\/my-repset.yaml\nkubectl get pods --output=yaml\n<\/pre>\n<p>\u8f93\u51fa\u663e\u793a\u4e86 Pod \u7684 Owner \u662f\u540d\u4e3a my-repset \u7684 ReplicaSet\uff1a<\/p>\n<pre>apiVersion: v1\nkind: Pod\nmetadata:\n  ...\n  ownerReferences:\n  - apiVersion: extensions\/v1beta1\n    controller: true\n    blockOwnerDeletion: true\n    kind: ReplicaSet\n    name: my-repset\n    uid: d9607e19-f88f-11e6-a518-42010a800195\n  ...\n<\/pre>\n<h2 id=\\\"\u63a7\u5236\u5783\u573e\u6536\u96c6\u5668\u5220\u9664-dependent\\\"><span id=\\\"_Dependent\\\">\u63a7\u5236\u5783\u573e\u6536\u96c6\u5668\u5220\u9664 Dependent<\/span><\/h2>\n<p>\u5f53\u5220\u9664\u5bf9\u8c61\u65f6\uff0c\u53ef\u4ee5\u6307\u5b9a\u662f\u5426\u8be5\u5bf9\u8c61\u7684 Dependent \u4e5f\u81ea\u52a8\u5220\u9664\u6389\u3002\u81ea\u52a8\u5220\u9664 Dependent \u4e5f\u79f0\u4e3a&nbsp;\u7ea7\u8054\u5220\u9664\u3002Kubernetes \u4e2d\u6709\u4e24\u79cd&nbsp;\u7ea7\u8054\u5220\u9664&nbsp;\u7684\u6a21\u5f0f\uff1abackground&nbsp;\u6a21\u5f0f\u548c&nbsp;foreground&nbsp;\u6a21\u5f0f\u3002<br \/>\n\u5982\u679c\u5220\u9664\u5bf9\u8c61\u65f6\uff0c\u4e0d\u81ea\u52a8\u5220\u9664\u5b83\u7684 Dependent\uff0c\u8fd9\u4e9b Dependent \u88ab\u79f0\u4f5c\u662f\u539f\u5bf9\u8c61\u7684&nbsp;\u5b64\u513f\u3002<\/p>\n<h3 id=\\\"background-\u7ea7\u8054\u5220\u9664\\\"><span id=\\\"Background\\\">Background \u7ea7\u8054\u5220\u9664<\/span><\/h3>\n<p>\u5728&nbsp;background \u7ea7\u8054\u5220\u9664&nbsp;\u6a21\u5f0f\u4e0b\uff0cKubernetes \u4f1a\u7acb\u5373\u5220\u9664 Owner \u5bf9\u8c61\uff0c\u7136\u540e\u5783\u573e\u6536\u96c6\u5668\u4f1a\u5728\u540e\u53f0\u5220\u9664\u8fd9\u4e9b Dependent\u3002<\/p>\n<h3 id=\\\"foreground-\u7ea7\u8054\u5220\u9664\\\"><span id=\\\"Foreground\\\">Foreground \u7ea7\u8054\u5220\u9664<\/span><\/h3>\n<p>\u5728&nbsp;foreground \u7ea7\u8054\u5220\u9664&nbsp;\u6a21\u5f0f\u4e0b\uff0c\u6839\u5bf9\u8c61\u9996\u5148\u8fdb\u5165 \u201c\u5220\u9664\u4e2d\u201d \u72b6\u6001\u3002\u5728 \u201c\u5220\u9664\u4e2d\u201d \u72b6\u6001\u4f1a\u6709\u5982\u4e0b\u7684\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>\u5bf9\u8c61\u4ecd\u7136\u53ef\u4ee5\u901a\u8fc7 REST API \u53ef\u89c1<\/li>\n<li>\u4f1a\u8bbe\u7f6e\u5bf9\u8c61\u7684&nbsp;deletionTimestamp&nbsp;\u5b57\u6bb5<\/li>\n<li>\u5bf9\u8c61\u7684&nbsp;metadata.finalizers&nbsp;\u5b57\u6bb5\u5305\u542b\u4e86\u503c \u201cforegroundDeletion\u201d<\/li>\n<\/ul>\n<p>\u4e00\u65e6\u88ab\u8bbe\u7f6e\u4e3a \u201c\u5220\u9664\u4e2d\u201d \u72b6\u6001\uff0c\u5783\u573e\u6536\u96c6\u5668\u4f1a\u5220\u9664\u5bf9\u8c61\u7684\u6240\u6709 Dependent\u3002\u5783\u573e\u6536\u96c6\u5668\u5220\u9664\u4e86\u6240\u6709 \u201cBlocking\u201d \u7684 Dependent\uff08\u5bf9\u8c61\u7684&nbsp;ownerReference.blockOwnerDeletion=true\uff09\u4e4b\u540e\uff0c\u5b83\u4f1a\u5220\u9664 Owner \u5bf9\u8c61\u3002<br \/>\n\u6ce8\u610f\uff0c\u5728 \u201cforeground \u5220\u9664\u201d \u6a21\u5f0f\u4e0b\uff0cDependent \u53ea\u6709\u901a\u8fc7&nbsp;ownerReference.blockOwnerDeletion&nbsp;\u624d\u80fd\u963b\u6b62\u5220\u9664 Owner \u5bf9\u8c61\u3002\u5728 Kubernetes 1.7 \u7248\u672c\u4e2d\u5c06\u589e\u52a0 admission controller\uff0c\u57fa\u4e8e Owner \u5bf9\u8c61\u4e0a\u7684\u5220\u9664\u6743\u9650\u6765\u63a7\u5236\u7528\u6237\u53bb\u8bbe\u7f6e&nbsp;blockOwnerDeletion&nbsp;\u7684\u503c\u4e3a true\uff0c\u6240\u4ee5\u672a\u6388\u6743\u7684 Dependent \u4e0d\u80fd\u591f\u5ef6\u8fdf Owner \u5bf9\u8c61\u7684\u5220\u9664\u3002<br \/>\n\u5982\u679c\u4e00\u4e2a\u5bf9\u8c61\u7684ownerReferences&nbsp;\u5b57\u6bb5\u88ab\u4e00\u4e2a Controller\uff08\u4f8b\u5982 Deployment \u6216 ReplicaSet\uff09\u8bbe\u7f6e\uff0cblockOwnerDeletion&nbsp;\u4f1a\u88ab\u81ea\u52a8\u8bbe\u7f6e\uff0c\u6ca1\u5fc5\u8981\u624b\u52a8\u4fee\u6539\u8fd9\u4e2a\u5b57\u6bb5\u3002<\/p>\n<h3 id=\\\"\u8bbe\u7f6e\u7ea7\u8054\u5220\u9664\u7b56\u7565\\\"><span id=\\\"i\\\">\u8bbe\u7f6e\u7ea7\u8054\u5220\u9664\u7b56\u7565<\/span><\/h3>\n<p>\u901a\u8fc7\u4e3a Owner \u5bf9\u8c61\u8bbe\u7f6e&nbsp;deleteOptions.propagationPolicy&nbsp;\u5b57\u6bb5\uff0c\u53ef\u4ee5\u63a7\u5236\u7ea7\u8054\u5220\u9664\u7b56\u7565\u3002\u53ef\u80fd\u7684\u53d6\u503c\u5305\u62ec\uff1a\u201corphan\u201d\u3001\u201cForeground\u201d \u6216 \u201cBackground\u201d\u3002<br \/>\n\u5bf9\u5f88\u591a Controller \u8d44\u6e90\uff0c\u5305\u62ec ReplicationController\u3001ReplicaSet\u3001StatefulSet\u3001DaemonSet \u548c Deployment\uff0c\u9ed8\u8ba4\u7684\u5783\u573e\u6536\u96c6\u7b56\u7565\u662f&nbsp;orphan\u3002\u56e0\u6b64\uff0c\u9664\u975e\u6307\u5b9a\u5176\u5b83\u7684\u5783\u573e\u6536\u96c6\u7b56\u7565\uff0c\u5426\u5219\u6240\u6709 Dependent \u5bf9\u8c61\u4f7f\u7528\u7684\u90fd\u662f&nbsp;orphan&nbsp;\u7b56\u7565\u3002<br \/>\n\u4e0b\u9762\u662f\u4e00\u4e2a\u5728\u540e\u53f0\u5220\u9664 Dependent \u5bf9\u8c61\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>kubectl proxy --port=8080\ncurl -X DELETE localhost:8080\/apis\/extensions\/v1beta1\/namespaces\/default\/replicasets\/my-repset \\\\\n-d \\'{\\\"kind\\\":\\\"DeleteOptions\\\",\\\"apiVersion\\\":\\\"v1\\\",\\\"propagationPolicy\\\":\\\"Background\\\"}\\' \\\\\n-H \\\"Content-Type: application\/json\\\"\n<\/pre>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5728\u524d\u53f0\u5220\u9664 Dependent \u5bf9\u8c61\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>kubectl proxy --port=8080\ncurl -X DELETE localhost:8080\/apis\/extensions\/v1beta1\/namespaces\/default\/replicasets\/my-repset \\\\\n-d \\'{\\\"kind\\\":\\\"DeleteOptions\\\",\\\"apiVersion\\\":\\\"v1\\\",\\\"propagationPolicy\\\":\\\"Foreground\\\"}\\' \\\\\n-H \\\"Content-Type: application\/json\\\"\n<\/pre>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5b64\u513f Dependent \u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>kubectl proxy --port=8080\ncurl -X DELETE localhost:8080\/apis\/extensions\/v1beta1\/namespaces\/default\/replicasets\/my-repset \\\\\n-d \\'{\\\"kind\\\":\\\"DeleteOptions\\\",\\\"apiVersion\\\":\\\"v1\\\",\\\"propagationPolicy\\\":\\\"Orphan\\\"}\\' \\\\\n-H \\\"Content-Type: application\/json\\\"\n<\/pre>\n<p>kubectl \u4e5f\u652f\u6301\u7ea7\u8054\u5220\u9664\u3002 \u901a\u8fc7\u8bbe\u7f6e&nbsp;&#8211;cascade&nbsp;\u4e3a true\uff0c\u53ef\u4ee5\u4f7f\u7528 kubectl \u81ea\u52a8\u5220\u9664 Dependent \u5bf9\u8c61\u3002\u8bbe\u7f6e&nbsp;&#8211;cascade&nbsp;\u4e3a false\uff0c\u4f1a\u4f7f Dependent \u5bf9\u8c61\u6210\u4e3a\u5b64\u513f Dependent \u5bf9\u8c61\u3002&#8211;cascade&nbsp;\u7684\u9ed8\u8ba4\u503c\u662f true\u3002<br \/>\n\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff0c\u4f7f\u4e00\u4e2a&nbsp;ReplicaSet&nbsp;\u7684&nbsp;Dependent&nbsp;\u5bf9\u8c61\u6210\u4e3a\u5b64\u513f Dependent\uff1a<\/p>\n<pre>kubectl delete replicaset my-repset --cascade=false\n<\/pre>\n<h2 id=\\\"\u5df2\u77e5\u7684\u95ee\u9898\\\"><span id=\\\"i-2\\\">\u5df2\u77e5\u7684\u95ee\u9898<\/span><\/h2>\n<ul>\n<li>1.7 \u7248\u672c\uff0c\u5783\u573e\u6536\u96c6\u4e0d\u652f\u6301&nbsp;\u81ea\u5b9a\u4e49\u8d44\u6e90\uff0c\u6bd4\u5982\u90a3\u4e9b\u901a\u8fc7 CustomResourceDefinition \u65b0\u589e\uff0c\u6216\u8005\u901a\u8fc7 API server \u805a\u96c6\u800c\u6210\u7684\u8d44\u6e90\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Kubernetes \u5783\u573e\u6536\u96c6\u5668\u7684\u89d2\u8272\u662f\u5220\u9664\u6307\u5b9a\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u66fe\u7ecf\u6709\u4f46\u4ee5\u540e\u4e0d\u518d\u62e5\u6709 Owner \u4e86\u3002 \u6ce8\u610f\uff1a &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1586\"> <span class=\"screen-reader-text\">Kubernetes \u5783\u573e\u6536\u96c6<\/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":0,"uagb_excerpt":"Kubernetes \u5783\u573e\u6536\u96c6\u5668\u7684\u89d2\u8272\u662f\u5220\u9664\u6307\u5b9a\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u66fe\u7ecf\u6709\u4f46\u4ee5\u540e\u4e0d\u518d\u62e5\u6709 Owner \u4e86\u3002 \u6ce8\u610f\uff1a&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1586"}],"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=1586"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1586\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1586"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}