{"id":86311,"date":"2020-06-24T01:42:11","date_gmt":"2020-06-23T23:42:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/lomaem-klaster-kubernetes-cherez-helm-v2-tiller"},"modified":"2020-06-24T01:42:11","modified_gmt":"2020-06-23T23:42:11","slug":"lomaem-klaster-kubernetes-cherez-helm-v2-tiller","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/lomaem-klaster-kubernetes-cherez-helm-v2-tiller","title":{"rendered":"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/9fced786f84d95b0291c33eef4012828.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Helm \u2014 spr\u00e1vce bal\u00ed\u010dk\u016f pro Kubernetes, n\u011bco jako <code>apt-get<\/code> pro Ubuntu. V t\u00e9to pozn\u00e1mce se pod\u00edv\u00e1me na p\u0159edchoz\u00ed verzi helm (v2) se slu\u017ebou tiller, kter\u00e1 je v\u00fdchoz\u00edm nastaven\u00edm a prost\u0159ednictv\u00edm kter\u00e9 z\u00edsk\u00e1me p\u0159\u00edstup ke klastru.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>P\u0159iprav\u00edme klastr, k tomu spust\u00edme p\u0159\u00edkaz:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">kubectl run --rm --restart=Never -it --image=madhuakula\/k8s-goat-helm-tiller -- bash<\/code><\/pre>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/6b5ac23e43a57548ee7a0a90e0d1a3f5.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h2 id=\"demonstraciya\">Demonstrace<\/h2>\n<p><\/p>\n<ul>\n<li>Pokud nic nav\u00edc nenastavujeme, helm v2 spou\u0161t\u00ed slu\u017ebu tiller, kter\u00e1 m\u00e1 RBAC s pln\u00fdmi administr\u00e1torsk\u00fdmi pr\u00e1vy pro klastr.<\/li>\n<li>Po instalaci v namespace <code>kube-system<\/code> se objevuje <code>tiller-deploy<\/code>, a tak\u00e9 se otev\u0159e port 44134, p\u0159ipojen\u00fd k 0.0.0.0. To lze zkontrolovat pomoc\u00ed telnetu.<\/li>\n<\/ul>\n<p><\/p>\n<pre><code class=\"plaintext\">$ telnet tiller-deploy.kube-system 44134<\/code><\/pre>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/9f6dccf8380ef5cba905bcd0f2785778.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<ul>\n<li>Nyn\u00ed se m\u016f\u017eeme p\u0159ipojit k slu\u017eb\u011b tiller. Pou\u017eijeme bin\u00e1rn\u00ed soubor helm pro prov\u00e1d\u011bn\u00ed operac\u00ed p\u0159i komunikaci se slu\u017ebou tiller:<\/li>\n<\/ul>\n<p><\/p>\n<pre><code class=\"plaintext\">$ helm --host tiller-deploy.kube-system:44134 version<\/code><\/pre>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/34d6abdc649f21b3124b0569779e2e40.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<ul>\n<li>Zkus\u00edme z\u00edskat tajemstv\u00ed z Kubernetes klastru z namespace <code>kube-system<\/code>:<\/li>\n<\/ul>\n<p><\/p>\n<pre><code class=\"plaintext\">$ kubectl get secrets -n kube-system<\/code><\/pre>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/7c4d24f4fb518574e2c41d51239d5466.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<ul>\n<li>Nyn\u00ed m\u016f\u017eeme vytvo\u0159it vlastn\u00ed chart, ve kter\u00e9m vytvo\u0159\u00edme roli s administr\u00e1torsk\u00fdmi pr\u00e1vy a p\u0159i\u0159ad\u00edme tuto roli v\u00fdchoz\u00edmu slu\u017eebn\u00edmu \u00fa\u010dtu. Pou\u017eit\u00edm tokenu z tohoto slu\u017eebn\u00edho \u00fa\u010dtu jsme z\u00edskali pln\u00fd p\u0159\u00edstup do na\u0161eho klastru.<\/li>\n<\/ul>\n<p><\/p>\n<pre><code class=\"plaintext\">$ helm --host tiller-deploy.kube-system:44134 install \/pwnchart<\/code><\/pre>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/103412d1497efb0370f5faf7087b66d1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<ul>\n<li>Te\u010f, kdy\u017e <code>pwnchart<\/code> byl nasazen, v\u00fdchoz\u00ed slu\u017eebn\u00ed \u00fa\u010det m\u00e1 pln\u00fd administr\u00e1torsk\u00fd p\u0159\u00edstup. Znovu zkontrolujeme z\u00edsk\u00e1n\u00ed tajemstv\u00ed z <code>kube-system<\/code><\/li>\n<\/ul>\n<p><\/p>\n<pre><code class=\"plaintext\">kubectl get secrets -n kube-system<\/code><\/pre>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Rozb\u00edj\u00edme Kubernetes cluster pomoc\u00ed Helm v2 tiller\" src=\"\/wp-content\/uploads\/2020\/06\/58fc4da5f4e5a4d8c4117e9298e2740f.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>\u00dasp\u011b\u0161n\u00e9 proveden\u00ed tohoto skriptu z\u00e1vis\u00ed na tom, jak byl tiller nasazen, n\u011bkdy ho administr\u00e1to\u0159i nasazuj\u00ed ve zvl\u00e1\u0161tn\u00edm namespace s jin\u00fdmi opr\u00e1vn\u011bn\u00edmi. Helm 3 nen\u00ed n\u00e1chyln\u00fd k takov\u00fdm zranitelnostem, proto\u017ee neobsahuje tiller.<\/p>\n<p><\/p>\n<p><em><strong>Pozn\u00e1mka p\u0159ekladatele:<\/strong> pou\u017e\u00edv\u00e1n\u00ed s\u00ed\u0165ov\u00fdch politik pro filtrov\u00e1n\u00ed provozu v klastru pom\u00e1h\u00e1 chr\u00e1nit p\u0159ed zranitelnostmi tohoto typu. <\/em><\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/507656\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Helm \u2014 \u043f\u0430\u043a\u0435\u0442\u043d\u044b\u0439 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440 \u0434\u043b\u044f Kubernetes, \u0447\u0442\u043e-\u0442\u043e \u0432\u0440\u043e\u0434\u0435 apt-get \u0434\u043b\u044f Ubuntu. \u0412 \u044d\u0442\u043e\u0439 \u0437\u0430\u043c\u0435\u0442\u043a\u0435 \u043c\u044b \u0443\u0432\u0438\u0434\u0438\u043c \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u044e helm (v2) \u0441 \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u043c tiller, \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u043c \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e, \u0447\u0435\u0440\u0435\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u043e\u043b\u0443\u0447\u0438\u043c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0443. \u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u043c \u043a\u043b\u0430\u0441\u0442\u0435\u0440, \u0434\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u043c \u043a\u043e\u043c\u0430\u043d\u0434\u0443: kubectl run &#8212;rm &#8212;restart=Never -it &#8212;image=madhuakula\/k8s-goat-helm-tiller &#8212; bash \u0414\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u044f \u0415\u0441\u043b\u0438 \u043d\u0438\u0447\u0435\u0433\u043e \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043d\u0435 \u043d\u0430\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0442\u044c, helm v2 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u0442 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":86312,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-86311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Helm \u2014 \u043f\u0430\u043a\u0435\u0442\u043d\u044b\u0439 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440 \u0434\u043b\u044f.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" 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