{"id":295932,"date":"2019-12-17T16:32:06","date_gmt":"2019-12-17T16:32:06","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=295932"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=295932","title":{"rendered":"Ephemeral Containers Kubernetes \u043f\u0435\u0440\u0432\u044b\u0435 \u0448\u0430\u0433\u0438"},"content":{"rendered":"\n<div class=\"post__text post__text-html js-mediator-article\" id=\"post-content-body\" data-io-article-url=\"https:\/\/habr.com\/ru\/post\/479304\/\"><b>Ephemeral Containers Kubernetes<\/b> \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u0430\u044f \u0437\u0430\u0442\u0435\u044f \u0434\u043b\u044f \u0434\u0435\u0431\u0430\u0433\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0432 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043a\u0440\u043e\u043c\u0435 \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0431\u0438\u043d\u0430\u0440\u044f \u043d\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442 \u0432 \u0441\u0435\u0431\u0435 \u043d\u0438\u0447\u0435\u0433\u043e.<\/p>\n<p>  \u041d\u0435\u043c\u043d\u043e\u0433\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0435\u0441\u0442\u044c \u043d\u0430 \u0441\u0430\u0439\u0442\u0435 Kubernetes \u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u043d\u0430 \u043f\u0440\u043e\u0441\u0442\u043e\u0440\u0430\u0445.<br \/>  <a name=\"habracut\"><\/a><br \/>  \u0414\u0430\u043d\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f \u044d\u043a\u0441\u043f\u0435\u0440\u0435\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f, \u0432 \u0434\u0435\u0431\u0440\u044f\u0445 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u044f \u0430\u043b\u044c\u0444 \u0431\u0435\u0442 \u0432\u0435\u0440\u0441\u0438\u0439 \u043a\u0443\u0431\u0435\u0440\u0430 \u043d\u0435 \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u043b\u0441\u044f. <br \/>  \u041f\u0440\u043e\u0432\u0435\u0440\u044f\u043b\u043e\u0441\u044c \u043d\u0430 Kubernetes v1.16.3<\/p>\n<p>  \u0414\u043b\u044f \u0442\u043e\u0433\u043e \u0447\u0442\u043e\u0431\u044b \u0438\u043c\u0435\u0442\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u044d\u0444\u0435\u043c\u0435\u0440\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440 \u0432 \u043f\u043e\u0434\u0435 \u043d\u0443\u0436\u043d\u043e \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u044e\/\u0438 \u0447\u0435\u0440\u0435\u0437 <b>feature-gates<\/b>.<\/p>\n<p>  \u0412 \u043e\u0431\u0449\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435 feature-gates \u044d\u0442\u043e \u043e\u043f\u0446\u0438\u044f \u0441 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u0437\u0430\u043f\u0443\u0449\u0435\u043d \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u043a\u0443\u0431\u0435\u0440\u0430, ( \u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u0445 \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u044b\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u0447\u0435\u0440\u0435\u0437 ps ) \u0442.\u0435. \u043e\u0434\u0438\u043d \u043b\u0438\u0448\u044c \u043a\u0443\u0431\u0435\u043b\u0435\u0442 \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u044b\u0439 \u0441 \u044d\u0442\u0438\u043c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c \u0441\u043a\u043e\u0440\u0435\u0435 \u0432\u0441\u0435\u0433\u043e \u0431\u0443\u0434\u0435\u0442 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u0435\u043d, \u0432\u0435\u0440\u043d\u0435\u0435 \u0440\u0430\u0437\u043d\u044b\u0435 \u0444\u0438\u0447\u0438 \u0442\u0440\u0435\u0431\u0443\u044e\u0442 \u0430\u043a\u0442\u0438\u0432\u0430\u0446\u0438\u0438 \u043d\u0430 \u0441\u043e\u043e\u0442\u0432\u0432\u0443\u044e\u0449\u0438\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430\u0445 \u043a\u0443\u0431\u0435\u0440\u0430.<\/p>\n<p>  \u0412 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0440\u0435\u0436\u0438\u043c\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u0443\u0431\u0435\u0440\u0430, \u0435\u0441\u0442\u044c \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b<\/p>\n<p>  1. <\/p>\n<pre><code class=\"plaintext\">minikube start --feature-gates=\"EphemeralContainers=true\"<\/code><\/pre>\n<p>  2. \u0440\u0430\u0437\u0432\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u0435\u043c \u043a\u043b\u0430\u0441\u0442\u0435\u0440 \u0434\u043e\u0431\u0430\u0432\u0438\u0432 \u0432 \u0441\u0435\u043a\u0446\u0438\u0438<\/p>\n<pre><code class=\"python\">apiVersion: kubeadm.k8s.io\/v1beta2     kind: InitConfiguration     localAPIEndpoint: {}     nodeRegistration:       kubeletExtraArgs:         \"feature-gates\": \"EphemeralContainers=true\" --- apiVersion: kubeadm.k8s.io\/v1beta2     kind: ClusterConfiguration     apiServer:       extraArgs:         \"feature-gates\": \"EphemeralContainers=true\"     scheduler:       extraArgs:         \"feature-gates\": \"EphemeralContainers=true\"     controllerManager:       extraArgs:         \"feature-gates\": \"EphemeralContainers=true\" <\/code><\/pre>\n<p>  3. \u041d\u0430 \u0436\u0438\u0432\u043e\u043c \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0435<\/p>\n<pre><code class=\"plaintext\">\/var\/lib\/kubelet\/kubeadm-flags.env<\/code><\/pre>\n<p>  \u0414\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b <\/p>\n<pre><code class=\"plaintext\">--feature-gates=EphemeralContainers=true<\/code><\/pre>\n<p>  \u0427\u0442\u043e\u0431\u044b \u0441\u0442\u0430\u043b\u043e \u043f\u043e\u0445\u043e\u0436\u0435 \u043d\u0430 <\/p>\n<pre><code class=\"python\">KUBELET_KUBEADM_ARGS=\"--cgroup-driver=cgroupfs --feature-gates=EphemeralContainers=true --network-plugin=cni --pod-infra-container-image=k8s.gcr.io\/pause:3.1\" <\/code><\/pre>\n<p>  \u0420\u0435\u0441\u0442\u0430\u0440\u0442\u0443\u0435\u043c service kubelet restart<\/p>\n<pre><code class=\"plaintext\">\/etc\/kubernetes\/manifests\/kube-apiserver.yaml<\/code><\/pre>\n<p>  \u0414\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0432 \u043a\u043e\u043d\u0435\u0446 \u0441\u043f\u0438\u0441\u043a\u0430 cmd \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435:<\/p>\n<pre><code class=\"python\">spec:   containers:   - command:     - --feature-gates=EphemeralContainers=true <\/code><\/pre>\n<p>  \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e \u043f\u0440\u0430\u0432\u0438\u043c<\/p>\n<pre><code class=\"plaintext\">kube-scheduler.yaml     kube-controller-manager.yaml<\/code><\/pre>\n<p>  \u041f\u043e\u0441\u043b\u0435 <\/p>\n<pre><code class=\"plaintext\">kubectl get pods -A<\/code><\/pre>\n<p>  \u0412 namespace kube-system \u0438\u0449\u0435\u043c \u043f\u043e\u0434\u044b \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0435 \u0432 \u0438\u043c\u0435\u043d\u0438 <\/p>\n<pre><code class=\"plaintext\">kube-apiserver kube-scheduler    kube-controller-manager<\/code><\/pre>\n<p>  \u0423\u0434\u044f\u043b\u0435\u043c \u044d\u0442\u0438 \u043f\u043e\u0434\u044b \u0447\u0435\u0440\u0435\u0437 kubectl delete pod <br \/>  \u041e\u043d\u0438 \u043f\u0435\u0440\u0435\u0441\u043e\u0437\u0434\u0430\u0434\u0443\u0442\u0441\u044f \u0441 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c\u0438 \u0438\u0437 \u043f\u043e\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432.<\/p>\n<p>  4. \u0422\u0435\u043e\u0440\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0435\u0441\u0442\u044c \u0435\u0449\u0435 \u043e\u0434\u0438\u043d \u0432\u0430\u0440\u0438\u0430\u043d\u0442, \u043d\u043e \u043e\u043d \u0443 \u043c\u0435\u043d\u044f \u043d\u0435 \u0437\u0430\u0440\u0430\u0431\u043e\u0442\u0430\u043b<\/p>\n<pre><code class=\"plaintext\">kubeadm upgrade plan  --feature-gates EphemeralContainers=true<\/code><\/pre>\n<p>  \u041f\u0440\u043e\u0431\u0443\u0435\u043c \u043f\u043e\u0434\u0441\u043e\u0435\u0434\u0438\u043d\u0438\u0442\u044c\u0441\u044f \u043a \u043f\u043e\u0434\u0443-\u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430\u043c.<\/p>\n<p>  \u041d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u043a\u043e\u043f\u0438\u0430\u0441\u0442 \u0441 \u0441\u0430\u0439\u0442\u0430 \u043a\u0443\u0431\u0435\u0440\u0430.<\/p>\n<p>  \u0414\u0435\u043b\u0430\u0435\u043c ec.json \u0444\u0430\u0439\u043b \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c example-pod \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u043c \u043d\u0430 \u0438\u043c\u044f \u043f\u043e\u0434\u0430 \u043a \u043a\u043e\u0442\u043e\u0440\u043e\u043c\u0443 \u043d\u0435\u0436\u043d\u043e \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u0442\u0441\u044f, \u0432 image \u043f\u0438\u0448\u0435\u043c \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440 \u0441 \u043e\u0442\u043b\u0430\u0434\u043e\u0447\u043d\u044b\u043c\u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430\u043c\u0438 (ubuntu \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440):<\/p>\n<pre><code class=\"python\">{     \"apiVersion\": \"v1\",     \"kind\": \"EphemeralContainers\",     \"metadata\": {             \"name\": \"example-pod\"     },     \"ephemeralContainers\": [{         \"command\": [             \"sh\"         ],         \"image\": \"busybox\",         \"imagePullPolicy\": \"IfNotPresent\",         \"name\": \"debugger\",         \"stdin\": true,         \"tty\": true,         \"terminationMessagePolicy\": \"File\"     }] } <\/code><\/pre>\n<p>  \u041f\u0430\u0442\u0447\u0438\u043c \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 \u043a\u043e\u043d\u0442\u0435\u043d\u0435\u0440\u0430 \u043a \u043a\u043e\u0442\u043e\u0440\u043e\u043c\u0443 \u0431\u0443\u0434\u0435\u043c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0442\u044c\u0441\u044f, \u043d\u0435 \u0437\u0430\u0431\u044b\u0432\u0430\u0435\u043c \u043f\u0440\u043e namespace<\/p>\n<pre><code class=\"1c\">kubectl replace --raw \/api\/v1\/namespaces\/&lt;b&gt;default&lt;\/b&gt;\/pods\/&lt;b&gt;example-pod&lt;\/b&gt;\/ephemeralcontainers  -f ec.json <\/code><\/pre>\n<p>  \u0410\u0442\u0442\u0430\u0447\u0438\u043c\u0441\u044f \u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c \u043e\u0431\u043e\u043b\u043e\u0447\u043a\u0443 \u0432 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0435:<\/p>\n<pre><code class=\"plaintext\">kubectl attach -it example-pod -c debugger<\/code><\/pre>\n<p>  \u0415\u0441\u043b\u0438 \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u00abps auxww\u00bb \u0442\u043e \u043d\u0438\u0447\u0435\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0433\u043e \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u0441\u044f \u0442.\u043a. \u043d\u0443\u0436\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 Share Process Namespace. <\/p>\n<div class=\"spoiler\"><b class=\"spoiler_title\">\u0418\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438<\/b><\/p>\n<div class=\"spoiler_text\">1. <a href=\"https:\/\/www.shogan.co.uk\/kubernetes\/enabling-and-using-ephemeral-containers-on-kubernetes-1-16\/\">https:\/\/www.shogan.co.uk\/kubernetes\/enabling-and-using-ephemeral-containers-on-kubernetes-1-16\/<\/a><\/p>\n<p>  2. <a href=\"https:\/\/kubernetes.io\/docs\/concepts\/workloads\/pods\/ephemeral-containers\/#uses-for-ephemeral-containers\">https:\/\/kubernetes.io\/docs\/concepts\/workloads\/pods\/ephemeral-containers\/#uses-for-ephemeral-containers<\/a><\/p>\n<p>  3. <a href=\"https:\/\/coredns.io\/2018\/01\/29\/deploying-kubernetes-with-coredns-using-kubeadm\/\">https:\/\/coredns.io\/2018\/01\/29\/deploying-kubernetes-with-coredns-using-kubeadm\/<\/a><\/div>\n<\/div>\n<\/div>\n<p>               <script class=\"js-mediator-script\">!function(e){function t(t,n){if(!(n in e)){for(var r,a=e.document,i=a.scripts,o=i.length;o--;)if(-1!==i[o].src.indexOf(t)){r=i[o];break}if(!r){r=a.createElement(\"script\"),r.type=\"text\/javascript\",r.async=!0,r.defer=!0,r.src=t,r.charset=\"UTF-8\";var d=function(){var e=a.getElementsByTagName(\"script\")[0];e.parentNode.insertBefore(r,e)};\"[object Opera]\"==e.opera?a.addEventListener?a.addEventListener(\"DOMContentLoaded\",d,!1):e.attachEvent(\"onload\",d):d() } } }t(\"\/\/mediator.mail.ru\/script\/2820404\/\",\"_mediator\")}(window);<\/script>      <br \/> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/post\/479304\/\"> https:\/\/habr.com\/ru\/post\/479304\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\n<div class=\"post__text post__text-html js-mediator-article\" id=\"post-content-body\" data-io-article-url=\"https:\/\/habr.com\/ru\/post\/479304\/\"><b>Ephemeral Containers Kubernetes<\/b> \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u0430\u044f \u0437\u0430\u0442\u0435\u044f \u0434\u043b\u044f \u0434\u0435\u0431\u0430\u0433\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0432 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043a\u0440\u043e\u043c\u0435 \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0431\u0438\u043d\u0430\u0440\u044f \u043d\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442 \u0432 \u0441\u0435\u0431\u0435 \u043d\u0438\u0447\u0435\u0433\u043e.<\/p>\n<p>  \u041d\u0435\u043c\u043d\u043e\u0433\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0435\u0441\u0442\u044c \u043d\u0430 \u0441\u0430\u0439\u0442\u0435 Kubernetes \u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u043d\u0430 \u043f\u0440\u043e\u0441\u0442\u043e\u0440\u0430\u0445.  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