{"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\/it\/blog\/administrirovanie\/kubernetes-1-17-kak-obnovitsya-i-ne-potratit-ves-error-budget","title":{"rendered":"Kubernetes 1.17 \u2014 come aggiornarsi senza spendere tutto il budget per errori","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Kubernetes 1.17 \u2014 come aggiornarsi senza spendere tutto il budget per errori\" src=\"\/wp-content\/uploads\/2019\/12\/562b966d36dc1c70635605ef89277bc9.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nIl 9 dicembre \u00e8 stata rilasciata un'altra versione di Kubernetes \u2014 1.17. Il suo motto \u00e8 \u00abStabilit\u00e0\u00bb, molte funzionalit\u00e0 hanno ricevuto lo stato GA, un certo numero di funzionalit\u00e0 obsolete \u00e8 stato rimosso...<\/p>\n<p>E, come sempre, la nostra sezione preferita, Azione richiesta, del file <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/CHANGELOG-1.17.md\">CHANGELOG-1.17.md<\/a><\/noindex> richiede attenzione.<\/p>\n<p>Lavoreremo a mano...<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Attenzione, Storage!<\/h3>\n<p>\nL'aggiornamento di kubelet a caldo nella versione 1.17 non \u00e8 supportato, perch\u00e9 \u00e8 cambiato il percorso per i volumi di blocco. Prima di aggiornare il nodo \u00e8 necessario evacuare tutti i pod usando il comando <code>kubectl drain<\/code>.<\/p>\n<h4>Faglie e porte\u2026<\/h4>\n<p>\nNel changelog di solito scrivono che \u00e8 stato rimosso o aggiunto un certo flag o feature gate, ma per qualche motivo non menzionano mai l'applicazione in cui \u00e8 avvenuta questa modifica\u2026<\/p>\n<ul>\n<li> Rimosso il flag <code>--include-uninitialized<\/code> a <code>kubectl<\/code>; <\/li>\n<li> Funzionalit\u00e0 consentite dai feature gates <code>GCERegionalPersistentDisk<\/code>, <code>EnableAggregatedDiscoveryTimeout<\/code> e <code>PersistentLocalVolumes<\/code>, ora \u00e8 sempre utilizzato e non pu\u00f2 essere disattivato. Queste opzioni sono state rimosse dalle possibili chiavi <code>api-server<\/code> e <code>controller-manager<\/code>; <\/li>\n<li> La rete degli indirizzi IP per i servizi ora non viene assegnata di default. \u00c8 necessario specificarla con il flag <code>--service-cluster-ip-range<\/code> al momento dell'avvio di API server e controller-manager.<\/li>\n<\/ul>\n<p><\/p>\n<h4>kubeadm<\/h4>\n<p><\/p>\n<ul>\n<li> Kubeadm ha imparato a configurare l'aggiornamento automatico dei certificati per kubelet su tutti i nodi del cluster, incluso il primo master, dove \u00e8 stato eseguito il comando <code>kubeadm init<\/code>. Un effetto collaterale \u00e8 stata la necessit\u00e0 di avere un file di configurazione iniziale di kubelet <code>bootstrap-kubelet.conf<\/code> anzich\u00e9 <code>kubelet.conf<\/code> durante l'esecuzione <code>kubeadm init<\/code>;\n<\/li>\n<li> Quando si aggiungono modalit\u00e0 di autorizzazione in API <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> kubeadm non include pi\u00f9 le modalit\u00e0 <code>Node, RBAC<\/code> nel manifesto del pod statico, permettendo di cambiare completamente la configurazione.<\/li>\n<\/ul>\n<p><\/p>\n<h4>RBAC<\/h4>\n<p>\nRimosse le cluster role incorporate <code>system:csi-external-provisioner<\/code> e <code>system:csi-external-attacher<\/code>.<\/p>\n<h4>Obsoleto\u2026<\/h4>\n<p>\nUn certo numero di funzionalit\u00e0 \u00e8 stato dichiarato obsoleto, ma continua a essere supportato. \u00c8 particolarmente importante notare il passaggio all'utilizzo di ContainerStorageInterface. Gli amministratori che hanno distribuito cluster propri (non gestiti) in AWS e GCE devono pianificare il passaggio all'uso del CSI Driver per lavorare con i volumi persistenti, invece dei driver integrati in Kubernetes. A questo dovrebbero aiutarli la procedura CSIMigration - aspettiamo la pubblicazione di una guida passo-passo. Gli amministratori che utilizzano altri fornitori per collegare dischi persistenti dovrebbero ora cercare e leggere la documentazione: nella versione 1.21 promettono di rimuovere definitivamente tutti i driver integrati.<br \/>\n<br \/>Fonte: <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 5.0.1.1 - 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\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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