{"id":53857,"date":"2019-12-12T00:00:00","date_gmt":"2019-12-11T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/kubernetes-1-17-kak-obnovitsya-i-ne-potratit-ves-error-budget"},"modified":"2020-02-18T14:01:47","modified_gmt":"2020-02-18T11:01:47","slug":"kubernetes-1-17-kak-obnovitsya-i-ne-potratit-ves-error-budget","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/kubernetes-1-17-kak-obnovitsya-i-ne-potratit-ves-error-budget","title":{"rendered":"Kubernetes 1.17 \u2014 jak aktualizovat a neztratit cel\u00fd error budget","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Kubernetes 1.17 \u2014 jak aktualizovat a neztratit cel\u00fd error budget\" src=\"\/wp-content\/uploads\/2019\/12\/562b966d36dc1c70635605ef89277bc9.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n9. prosince vy\u0161la dal\u0161\u00ed verze Kubernetes \u2014 1.17. Jej\u00edm mottem je \u201eStabilita\u201c, mnoho funkc\u00ed z\u00edskalo status GA, n\u011bkolik zastaral\u00fdch funkc\u00ed bylo odstran\u011bno\u2026<\/p>\n<p>A jako v\u017edy, n\u00e1\u0161 obl\u00edben\u00fd odd\u00edl Action Required souboru <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/CHANGELOG-1.17.md\">CHANGELOG-1.17.md<\/a><\/noindex> vy\u017eaduje pozornost.<\/p>\n<p>Poj\u010fme na to\u2026<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Pozor, Storage!<\/h3>\n<p>\nAktualizace kubelet za b\u011bhu ve verzi 1.17 nen\u00ed podporov\u00e1na, proto\u017ee se zm\u011bnila cesta k blokov\u00fdm objem\u016fm. P\u0159ed aktualizac\u00ed uzlu je t\u0159eba evakuovat v\u0161echny pody pomoc\u00ed p\u0159\u00edkazu <code>kubectl drain<\/code>.<\/p>\n<h4>Vlajky a br\u00e1ny\u2026<\/h4>\n<p>\nV changelogu se obvykle p\u00ed\u0161e, \u017ee byl odstran\u011bn nebo p\u0159id\u00e1n ur\u010dit\u00fd flag nebo feature gate, ale nikdy se nezmi\u0148uje aplikace, ve kter\u00e9 do\u0161lo k t\u00e9to zm\u011bn\u011b\u2026:<\/p>\n<ul>\n<li> Byl odstran\u011bn flag <code>--include-uninitialized<\/code> u <code>kubectl<\/code>; <\/li>\n<li> Funkcionalita, kterou povolovaly feature gates <code>GCERegionalPersistentDisk<\/code>, <code>EnableAggregatedDiscoveryTimeout<\/code> a <code>PersistentLocalVolumes<\/code>, nyn\u00ed je v\u017edy pou\u017e\u00edv\u00e1n a nelze jej vypnout. Tyto mo\u017enosti byly odstran\u011bny z mo\u017en\u00fdch kl\u00ed\u010d\u016f <code>api-server<\/code> a <code>controller-manager<\/code>; <\/li>\n<li> S\u00ed\u0165 IP adres pro slu\u017eby ji\u017e nen\u00ed automaticky p\u0159id\u011blov\u00e1na. Je t\u0159eba ji uv\u00e9st pomoc\u00ed flagu <code>--service-cluster-ip-range<\/code> p\u0159i spu\u0161t\u011bn\u00ed API serveru a controller-manageru.<\/li>\n<\/ul>\n<p><\/p>\n<h4>kubeadm<\/h4>\n<p><\/p>\n<ul>\n<li> Kubeadm se nau\u010dil nastavit automatick\u00e9 aktualizace certifik\u00e1t\u016f pro kubelet na v\u0161ech uzlech clusteru, v\u010detn\u011b prvn\u00edho masteru, kde byl proveden p\u0159\u00edkaz <code>kubeadm init<\/code>. Vedlej\u0161\u00edm efektem se stalo po\u017eadavek na p\u0159\u00edtomnost souboru s po\u010d\u00e1te\u010dn\u00ed konfigurac\u00ed kubelet <code>bootstrap-kubelet.conf<\/code> m\u00edsto <code>kubelet.conf<\/code> b\u011bhem prov\u00e1d\u011bn\u00ed <code>kubeadm init<\/code>;\n<\/li>\n<li> P\u0159i p\u0159id\u00e1v\u00e1n\u00ed re\u017eim\u016f autorizace do API <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> kubeadm ji\u017e nevkl\u00e1d\u00e1 re\u017eimy <code>Node, RBAC<\/code> do manifestu statick\u00e9ho podu, co\u017e umo\u017e\u0148uje \u00faplnou zm\u011bnu konfigurace.<\/li>\n<\/ul>\n<p><\/p>\n<h4>RBAC<\/h4>\n<p>\nByly odstran\u011bny vestav\u011bn\u00e9 clusterov\u00e9 role <code>system:csi-external-provisioner<\/code> a <code>system:csi-external-attacher<\/code>.<\/p>\n<h4>Zastaral\u00e9\u2026<\/h4>\n<p>\nN\u011bkolik funkc\u00ed bylo ozna\u010deno za zastaral\u00e9, ale st\u00e1le jsou podporov\u00e1ny. Zvl\u00e1\u0161t\u011b bychom cht\u011bli zd\u016fraznit proces p\u0159echodu na pou\u017e\u00edv\u00e1n\u00ed ContainerStorageInterface. Administr\u00e1to\u0159i, kte\u0159\u00ed rozvinuli sv\u00e9 vlastn\u00ed (ne managed) clustery v AWS a GCE, by m\u011bli napl\u00e1novat p\u0159estup na pou\u017e\u00edv\u00e1n\u00ed CSI Driver pro pr\u00e1ci s trval\u00fdmi svazky \u2014 m\u00edsto \u0159idi\u010d\u016f, kter\u00e9 jsou zabudov\u00e1ny v Kubernetes. S t\u00edm by jim m\u011bla pomoci procedura CSIMigration \u2014 \u010dek\u00e1me na krok za krokem p\u0159\u00edru\u010dku. Administr\u00e1to\u0159i, kte\u0159\u00ed pou\u017e\u00edvaj\u00ed jin\u00e9 poskytovatele pro p\u0159ipojen\u00ed trval\u00fdch disk\u016f, by se m\u011bli za\u010d\u00edt hledat a \u010d\u00edst dokumentaci: v verzi 1.21 se slibuje, \u017ee budou v\u0161echny vestav\u011bn\u00e9 \u0159idi\u010de definitivn\u011b odstran\u011bny.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/479534\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>9 \u0434\u0435\u043a\u0430\u0431\u0440\u044f \u0432\u044b\u0448\u043b\u0430 \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f Kubernetes \u2014 1.17. \u0415\u0435 \u0434\u0435\u0432\u0438\u0437 \u2014 \u00ab\u0421\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u00bb, \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u043e \u0444\u0438\u0447 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 \u0441\u0442\u0430\u0442\u0443\u0441 GA, \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0443\u0441\u0442\u0430\u0440\u0435\u0432\u0448\u0438\u0445 \u0444\u0438\u0447 \u0431\u044b\u043b\u043e \u0443\u0434\u0430\u043b\u0435\u043d\u043e\u2026 \u0418, \u043a\u0430\u043a \u0432\u0441\u0435\u0433\u0434\u0430, \u043d\u0430\u0448 \u043b\u044e\u0431\u0438\u043c\u044b\u0439 \u0440\u0430\u0437\u0434\u0435\u043b Action Required \u0444\u0430\u0439\u043b\u0430 CHANGELOG-1.17.md \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u043a \u0441\u0435\u0431\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f. \u041f\u043e\u0440\u0430\u0431\u043e\u0442\u0430\u0435\u043c \u0440\u0443\u043a\u0430\u043c\u0438\u2026 \u0412\u043d\u0438\u043c\u0430\u043d\u0438\u0435, Storage ! \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 kubelet \u043d\u0430 \u043b\u0435\u0442\u0443 \u0432 \u0432\u0435\u0440\u0441\u0438\u0438 1.17 \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u0441\u044f \u043f\u0443\u0442\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":53858,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-53857","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=\"9 \u0434\u0435\u043a\u0430\u0431\u0440\u044f \u0432\u044b\u0448\u043b\u0430.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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