{"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\/nl\/blog\/administrirovanie\/kubernetes-1-17-kak-obnovitsya-i-ne-potratit-ves-error-budget","title":{"rendered":"Kubernetes 1.17 \u2014 hoe bij te werken zonder het hele error budget te verspillen","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Kubernetes 1.17 \u2014 hoe bij te werken zonder het hele error budget te verspillen\" src=\"\/wp-content\/uploads\/2019\/12\/562b966d36dc1c70635605ef89277bc9.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nOp 9 december is de nieuwste versie van Kubernetes - 1.17 - uitgebracht. Het thema is 'Stabiliteit', en vele functies hebben de status GA gekregen, terwijl een aantal verouderde functies is verwijderd...<\/p>\n<p>En zoals altijd, onze favoriete sectie Actie Vereist van het bestand <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/CHANGELOG-1.17.md\">CHANGELOG-1.17.md<\/a><\/noindex> vraagt om aandacht.<\/p>\n<p>Laten we aan de slag gaan...<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Let op, Storage!<\/h3>\n<p>\nLive updates van kubelet worden in versie 1.17 niet ondersteund, omdat het pad naar block volumes is gewijzigd. Voordat je een knooppunt kunt bijwerken, moeten alle pods ervan worden ge\u00ebvacueerd met behulp van de opdracht <code>kubectl drain<\/code>.<\/p>\n<h4>Vlaggen en poorten\u2026<\/h4>\n<p>\nIn het changelog staat meestal wat er is verwijderd of toegevoegd, zoals een vlag of feature gate, maar er wordt om de een of andere reden nooit vermeld welke toepassing deze wijziging heeft ondergaan\u2026:<\/p>\n<ul>\n<li> De vlag <code>--include-uninitialized<\/code> \u2018 <code>kubectl<\/code>; <\/li>\n<li> Functionaliteit die door feature gates werd toegestaan <code>GCERegionalPersistentDisk<\/code>, <code>EnableAggregatedDiscoveryTimeout<\/code> en <code>PersistenteLokaleVolumes<\/code>, wordt nu altijd gebruikt en kan niet worden uitgeschakeld. Deze opties zijn verwijderd uit de mogelijke sleutels <code>api-server<\/code> en <code>controller-manager<\/code>; <\/li>\n<li> Het IP-adresnetwerk voor services wordt nu niet standaard toegewezen. Dit moet worden gespecificeerd met behulp van de vlag <code>--service-cluster-ip-range<\/code> bij het starten van de API-server en controller-manager.<\/li>\n<\/ul>\n<p><\/p>\n<h4>kubeadm<\/h4>\n<p><\/p>\n<ul>\n<li> Kubeadm heeft geleerd om automatische certificaatupdates voor kubelet op alle cluster-knooppunten in te stellen, inclusief de eerste master waar de opdracht <code>kubeadm init<\/code>werd uitgevoerd. Een neveneffect hiervan is dat er een bestand met de initi\u00eble kubelet-configuratie vereist is <code>bootstrap-kubelet.conf<\/code> in plaats van <code>kubelet.conf<\/code> tijdens uitvoering. <code>kubeadm init<\/code>;\n<\/li>\n<li> Bij het toevoegen van autorisatiemodi aan de API <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> voegt kubeadm geen modi meer toe <code>Node, RBAC<\/code> aan het manifest van de statische pod, zodat de configuratie volledig kan worden aangepast.<\/li>\n<\/ul>\n<p><\/p>\n<h4>RBAC<\/h4>\n<p>\nEr zijn ingebouwde clusterrollen verwijderd <code>system:csi-external-provisioner<\/code> en <code>system:csi-external-attacher<\/code>.<\/p>\n<h4>Depricated\u2026<\/h4>\n<p>\nEen aantal functies is als verouderd gemarkeerd, maar worden nog steeds ondersteund. Maar vooral willen we de overgang naar het gebruik van de ContainerStorageInterface benadrukken. Beheerders die hun eigen (niet beheerde) clusters in AWS en GCE hebben uitgerold, moeten de overgang naar het gebruik van de CSI-driver voor het werken met blijvende volumes plannen - in plaats van de in Kubernetes ingebouwde drivers. CSIMigration moet hierbij helpen - we wachten op de stap-voor-stap handleiding. Beheerders die andere aanbieders gebruiken voor het aansluiten van permanente schijven, moeten nu de documentatie opzoeken en lezen: in versie 1.21 beloven ze alle ingebouwde drivers eindelijk te verwijderen.<br \/>\n<br \/>Bron: <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 - 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