{"id":33773,"date":"2019-10-31T21:54:36","date_gmt":"2019-10-31T18:54:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/rezervirovanie-v-kubernetes-ono-sushhestvuet\/"},"modified":"2019-10-31T21:54:36","modified_gmt":"2019-10-31T18:54:36","slug":"rezervirovanie-v-kubernetes-ono-sushhestvuet","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/administrirovanie\/rezervirovanie-v-kubernetes-ono-sushhestvuet","title":{"rendered":"Riserva in Kubernetes: esiste","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Mi chiamo Sergey, sono della compagnia ITSumma e voglio parlarvi del nostro approccio al disaster recovery in Kubernetes. Negli ultimi tempi, mi sono dedicato molto alla consulenza per l'implementazione di varie soluzioni DevOps per diversi team, e in particolare, lavoro a stretto contatto su progetti che utilizzano K8s. Durante la conferenza Uptime day 4, dedicata al disaster recovery in architetture complesse, ho tenuto una presentazione sul disaster recovery del \"cubo\", e qui vi propongo una libera rielaborazione. Vorrei avvisarvi in anticipo che non si tratta di una guida pratica, ma piuttosto di un riassunto delle mie considerazioni su questo tema.<\/p>\n

\"Riserva
\n
\nIn realt\u00e0, il monitoraggio e la riserva sono due strumenti fondamentali per aumentare la resilienza di qualsiasi progetto. Ma direte, in Kubernetes tutto si bilancia da solo, tutto si scala da solo, e se succede qualcosa, si risollever\u00e0 automaticamente... Quindi, a una prima analisi superficiale del tema, alla domanda su come viene gestita la riserva in K8s, internet mi ha risposto \"ma perch\u00e9?\" Molti pensano che Kubernetes sia una di quelle magie che elimina tutti i problemi infrastrutturali e assicura che il progetto non si interrompa mai. Ma... il mondo non \u00e8 ci\u00f2 che sembra.
\n<\/a><\/noindex>
\nCome approcciavamo il processo di riserva in passato? Avevamo piattaforme identiche per l'hosting \u2014 che fossero macchine virtuali o fisiche, server<\/a>, a cui applicavamo tre pratiche fondamentali: <\/p>\n

    \n
  1. sincronizzazione del codice e della statica<\/li>\n
  2. sincronizzazione delle configurazioni<\/li>\n
  3. replica del database<\/li>\n<\/ol>\n

    \nE voil\u00e0: in qualsiasi momento possiamo passare alla piattaforma di riserva, tutti sono felici, ci alziamo e ci disperdiamo. <\/p>\n

    \"Riserva
    \n
    \nCosa ci viene offerto per aumentare la disponibilit\u00e0 continua della nostra applicazione Kubernetes? La prima cosa di cui parla la documentazione non ufficiale \u00e8 di mettere a disposizione molte macchine, creare pi\u00f9 master \u2014 il loro numero deve soddisfare le condizioni per raggiungere il quorum all'interno del cluster, e su ciascun master deve essere attivato etcd, api, MC, scheduler\u2026 E, sembra tutto fantastico: se alcune nodi di lavoro o master escono di servizio, il nostro cluster si riequilibrer\u00e0 e l'applicazione continuer\u00e0 a funzionare. Sembra quasi magia! Ma spesso il nostro cluster si trova all'interno di un unico centro di elaborazione dati, il che pu\u00f2 sollevare alcune domande. Cosa succede se arriva un escavatore e rovina un cavo, se cade un fulmine, se si verifica un diluvio universale? Tutto andrebbe in mille pezzi, il nostro cluster non esisterebbe pi\u00f9. Come affrontare la questione del backup considerando questo aspetto del problema? <\/p>\n

    Innanzitutto, \u00e8 necessario avere un altro cluster in hot standby, ovvero un cluster su cui si pu\u00f2 passare in qualsiasi momento. Da un punto di vista di Kubernetes, le infrastrutture devono essere completamente identiche. Ci\u00f2 significa che se ci sono plugin non standard per lavorare con il file system, soluzioni personalizzate per l'ingress, devono essere assolutamente identiche sui vostri due (o tre, o dieci, a seconda di quanto denaro e sforzi degli amministratori siano disponibili) cluster. \u00c8 fondamentale definire chiaramente due set di applicazioni (deployment, statefulset, daemonset, cronjob, ecc.): quali di esse possono funzionare costantemente in standby e quali \u00e8 meglio non avviare fino al momento del passaggio. <\/p>\n

    Deve quindi il nostro cluster di riserva essere completamente identico al nostro cluster operativo? No. In passato, nel lavoro con progetti monolitici e infrastrutture fisiche, mantenavamo un ambiente praticamente identico, ma nel contesto di Kubernetes, ritengo che ci\u00f2 non debba accadere. Vediamo perch\u00e9.<\/p>\n

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    \"Riserva
    \n
    \nE come ci suggeriscono di organizzare un cluster di prenotazione le persone su Internet? La seconda risposta pi\u00f9 popolare dopo \u00abperch\u00e9?\u00bb \u00e8 l'utilizzo di Kubernetes Federation. <\/p>\n

    Che cos'\u00e8? \u00c8, per cos\u00ec dire, un grande meta-cluster. Se pensiamo all'architettura di Kubernetes, dove abbiamo un master e diversi nodi, in termini di federazione abbiamo anch'essa un master e diversi nodi, solo che ogni nodo \u00e8 un cluster a s\u00e9 stante. Quindi lavoriamo con le stesse entit\u00e0, con gli stessi primiti, come in un singolo cluster Kubernetes, solo che gestiamo interi cluster anzich\u00e9 le nostre macchine fisiche. Nell'ambito della federazione, c'\u00e8 una completa sincronizzazione delle risorse federate dai genitori ai figli. Ad esempio, se avviamo un deployment tramite federazione, questo si installer\u00e0 su ogni nostro cluster secondario. Se prendiamo un qualsiasi configmap o secret e lo distribuiamo tramite federazione, si propagher\u00e0 a tutti i nostri cluster secondari; nel contempo, la federazione consente di personalizzare le nostre risorse sui figli. Cio\u00e8, prendiamo un configmap, lo distribuiamo tramite federazione e poi, se abbiamo bisogno di apportare delle modifiche su specifici cluster, andiamo a modificarlo su quel cluster specifico, e questa modifica non verr\u00e0 sincronizzata altrove. <\/p>\n

    Kubernetes Federation \u2014 \u043d\u0435 \u0442\u0430\u043a \u0434\u0430\u0432\u043d\u043e \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442, \u0438 \u043e\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0434\u0430\u043b\u0435\u043a\u043e \u043d\u0435 \u0432\u0435\u0441\u044c \u043d\u0430\u0431\u043e\u0440 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u0430\u043c K8s: \u043d\u0430 \u043c\u043e\u043c\u0435\u043d\u0442 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043e\u0434\u043d\u043e\u0439 \u0438\u0437 \u043f\u0435\u0440\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u0439 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u0442\u0430\u043c \u0433\u043e\u0432\u043e\u0440\u0438\u043b\u043e\u0441\u044c \u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043a\u043e\u043d\u0444\u0438\u0433-\u043c\u0430\u043f\u043e\u0432, \u0434\u0435\u043f\u043b\u043e\u0439\u043c\u0435\u043d\u0442\u0430 \u043f\u043e\u0434 \u0440\u0435\u043f\u043b\u0438\u043a\u0430-\u0441\u0435\u0442, ingress. \u0421\u0435\u043a\u0440\u0435\u0442\u044b \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u043b\u0438\u0441\u044c, \u0440\u0430\u0431\u043e\u0442\u0430 \u0441 volume \u0442\u0430\u043a\u0436\u0435 \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u043b\u0430\u0441\u044c. \u0421\u043b\u0438\u0448\u043a\u043e\u043c \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0439 \u043d\u0430\u0431\u043e\u0440. \u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e \u0435\u0441\u043b\u0438 \u043c\u044b \u043b\u044e\u0431\u0438\u043c \u0440\u0430\u0437\u0432\u043b\u0435\u043a\u0430\u0442\u044c\u0441\u044f, \u2014 \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0447\u0435\u0440\u0435\u0437 custom resource definition \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0438 \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u044b \u043a\u0443\u0431\u0435\u0440\u043d\u0435\u0442\u0435\u0441\u0443, \u2014 \u0432 \u0444\u0435\u0434\u0435\u0440\u0430\u0446\u0438\u044e \u043c\u044b \u0438\u0445 \u0443\u0436\u0435 \u043d\u0435 \u0437\u0430\u0442\u043e\u043b\u043a\u0430\u0435\u043c. \u0422\u043e \u0435\u0441\u0442\u044c \u043a\u0430\u043a \u0431\u044b\u2026 \u043e\u0447\u0435\u043d\u044c \u043f\u043e\u0445\u043e\u0436\u0435\u0435 \u043d\u0430 \u043f\u0440\u0430\u0432\u0434\u0443 \u0440\u0435\u0448\u0435\u043d\u0438\u0435, \u043d\u043e \u0437\u0430\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u0430\u0441 \u043f\u0435\u0440\u0438\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u0438 \u0441\u0442\u0440\u0435\u043b\u044f\u0442\u044c \u0441\u0435\u0431\u0435 \u0432 \u043d\u043e\u0433\u0443. \u0421 \u0434\u0440\u0443\u0433\u043e\u0439 \u0441\u0442\u043e\u0440\u043e\u043d\u044b, \u0444\u0435\u0434\u0435\u0440\u0430\u0446\u0438\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0433\u0438\u0431\u043a\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0442\u044c \u043d\u0430\u0448\u0438\u043c replicaset’\u043e\u043c. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043c\u044b \u0445\u043e\u0442\u0438\u043c, \u0447\u0442\u043e\u0431\u044b \u0431\u044b\u043b\u043e \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u043e 10 \u0440\u0435\u043f\u043b\u0438\u043a \u043d\u0430\u0448\u0435\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0444\u0435\u0434\u0435\u0440\u0430\u0446\u0438\u044f \u043f\u043e\u0434\u0435\u043b\u0438\u0442 \u044d\u0442\u043e \u0447\u0438\u0441\u043b\u043e \u043f\u0440\u043e\u043f\u043e\u0440\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e \u043c\u0435\u0436\u0434\u0443 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e\u043c \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u043e\u0432. \u0418 \u044d\u0442\u043e \u0432\u0441\u0435 \u043c\u043e\u0436\u043d\u043e \u0435\u0449\u0451 \u0438 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c! \u0422\u043e \u0435\u0441\u0442\u044c \u043c\u043e\u0436\u043d\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c, \u0447\u0442\u043e \u043d\u0430 \u0431\u043e\u0435\u0432\u043e\u043c \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0435 \u043d\u0443\u0436\u043d\u043e \u0434\u0435\u0440\u0436\u0430\u0442\u044c 6 \u0440\u0435\u043f\u043b\u0438\u043a \u043d\u0430\u0448\u0435\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0430 \u043d\u0430 \u0440\u0435\u0437\u0435\u0440\u0432\u0438\u0440\u0443\u044e\u0449\u0435\u043c \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0435, \u0434\u043b\u044f \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432, \u043b\u0438\u0431\u043e \u0434\u043b\u044f \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u043a\u0430\u043a\u0438\u0445-\u0442\u043e \u0440\u0430\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0439 \u2014 \u0442\u043e\u043b\u044c\u043a\u043e 4 \u0440\u0435\u043f\u043b\u0438\u043a\u0438 \u043d\u0430\u0448\u0435\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f. \u0427\u0442\u043e \u0442\u043e\u0436\u0435 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0443\u0434\u043e\u0431\u043d\u043e. \u041d\u043e \u0441 \u0444\u0435\u0434\u0435\u0440\u0430\u0446\u0438\u0435\u0439 \u043d\u0430\u043c \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043a\u0430\u043a\u0438\u0435-\u0442\u043e \u043d\u043e\u0432\u044b\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u044f, \u0447\u0442\u043e-\u0442\u043e \u0434\u043e\u0434\u0435\u043f\u043b\u043e\u0438\u0432\u0430\u0442\u044c \u043d\u0430 \u0445\u043e\u0434\u0443, \u0437\u0430\u0441\u0442\u0430\u0432\u043b\u044f\u0442\u044c \u0441\u0435\u0431\u044f \u0447\u0443\u0442\u044c-\u0447\u0443\u0442\u044c \u0431\u043e\u043b\u044c\u0448\u0435 \u0434\u0443\u043c\u0430\u0442\u044c\u2026 <\/p>\n

    \u00c8 possibile semplificare il processo di prenotazione di Kubernetes? Quali strumenti abbiamo a disposizione?<\/p>\n

    Innanzitutto, abbiamo sempre un sistema di CI\/CD, quindi non dobbiamo andare manualmente a scrivere sui server create\/apply. Il sistema genera file YAML per i nostri contenitori. <\/p>\n

    In secondo luogo, ci sono diversi cluster, abbiamo uno o pi\u00f9 registry (se siamo furbi) che abbiamo anche riservato. E c'\u00e8 un'ottima utility kubectl, che pu\u00f2 lavorare con pi\u00f9 cluster contemporaneamente. <\/p>\n

    \"Riserva
    \n
    \nDunque, a mio avviso, la soluzione pi\u00f9 semplice e corretta per costruire un cluster di backup \u00e8 un deployment parallelo primitivo. Abbiamo una pipeline nel sistema CI\/CD; prima compiliamo i nostri container, testiamo e distribuiamo le applicazioni tramite kubectl su pi\u00f9 cluster indipendenti. Possiamo effettuare deploy simultanei su diversi cluster. Di conseguenza, gestiamo anche la distribuzione delle configurazioni in questa fase. Possiamo definire in anticipo un insieme di configurazioni per il nostro cluster di produzione, un insieme di configurazioni per il cluster di backup e, a livello di sistema CI\/CD, distribuire l'ambiente di produzione nel cluster di produzione e l'ambiente di backup nel cluster di backup. A differenza della federazione, non \u00e8 necessario andare a ogni cluster secondario dopo aver definito la risorsa federativa e ridefinire qualcosa. Lo abbiamo fatto in anticipo. Che bravi che siamo.<\/p>\n

    \u041d\u043e\u2026 \u0435\u0441\u0442\u044c\u2026 \u044f \u0431\u044b\u043b\u043e \u043d\u0430\u043f\u0438\u0441\u0430\u043b, \u0435\u0441\u0442\u044c \u00ab\u043a\u043e\u0440\u0435\u043d\u044c \u0432\u0441\u0435\u0445 \u0437\u043e\u043b\u00bb, \u043d\u043e \u0438\u0445 \u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u0434\u0432\u0430. \u0412\u043e-\u043f\u0435\u0440\u0432\u044b\u0445, \u0444\u0430\u0439\u043b\u043e\u0432\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430. \u0415\u0441\u0442\u044c \u043a\u0430\u043a\u043e\u0439-\u0442\u043e PV, \u043b\u0438\u0431\u043e \u043c\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c \u0432\u043d\u0435\u0448\u043d\u0435\u0435 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435. \u0415\u0441\u043b\u0438 \u043c\u044b \u0445\u0440\u0430\u043d\u0438\u043c \u0444\u0430\u0439\u043b\u044b \u0432\u043d\u0443\u0442\u0440\u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430, \u0442\u043e \u0442\u0443\u0442 \u043d\u0430\u0434\u043e \u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u043f\u043e \u0441\u0442\u0430\u0440\u044b\u043c \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0430\u043c, \u043e\u0441\u0442\u0430\u0432\u0448\u0438\u043c\u0441\u044f \u0441\u043e \u0432\u0440\u0435\u043c\u0451\u043d \u0436\u0435\u043b\u0435\u0437\u043d\u044b\u0445 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440: \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c lsync’\u043e\u043c. \u041d\u0443 \u0438\u043b\u0438 \u043b\u044e\u0431\u044b\u043c \u0434\u0440\u0443\u0433\u0438\u043c \u043f\u0440\u0435\u0434\u043f\u043e\u0447\u0438\u0442\u0430\u0435\u043c\u044b\u043c \u043b\u0438\u0447\u043d\u043e \u0432\u0430\u043c\u0438 \u043a\u043e\u0441\u0442\u044b\u043b\u0451\u043c. \u0420\u0430\u0441\u043a\u0430\u0442\u044b\u0432\u0430\u0435\u043c \u0432\u0441\u0451 \u043d\u0430 \u0434\u0440\u0443\u0433\u0438\u0435 \u0442\u0430\u0447\u043a\u0438 \u0438 \u0436\u0438\u0432\u0435\u043c.<\/p>\n

    In secondo luogo, e, in realt\u00e0, un punto di attrito ancora pi\u00f9 importante \u00e8 il database. Se siamo persone intelligenti e non teniamo il database in Kubernetes, il processo di backup dei dati seguir\u00e0 la vecchia schematizzazione: replica master-slave, poi switch, raggiungiamo la replica e vivremo bene. Ma se manterremo il nostro DB all'interno del cluster, ci sono molte soluzioni pronte per organizzare la stessa replica master-slave, molte soluzioni per sollevare DB all'interno di Kubernetes.
    \n Sulla riserva delle basi dati sono stati letti un miliardo di rapporti e scritti un miliardo di articoli, non c'\u00e8 realmente nulla di nuovo. In generale, seguite il vostro sogno, vivete come volete, inventatevi anche qualche complicato espediente, ma pensate sempre a come gestirete il tutto in termini di riserva.<\/p>\n

    Ora parliamo di come avverr\u00e0 in linea di massima il processo di switch su una piattaforma di backup in caso di incendio. Iniziamo con il deploy parallelo delle applicazioni stateless. Queste non influenzano la logica aziendale delle nostre applicazioni e del nostro progetto; possiamo mantenere due set di applicazioni in esecuzione e queste possono iniziare a ricevere traffico. \u00c8 molto importante, durante il processo di switch sulla piattaforma di backup, controllare se \u00e8 necessario ridefinire le configurazioni. Ad esempio, abbiamo un cluster Kubernetes in produzione, un cluster Kubernetes secondario, un database master esterno e un database master di backup. Ci sono quattro modalit\u00e0 in cui queste applicazioni in produzione possono iniziare a interagire tra loro. Possiamo cambiare il database, e cos\u00ec dovremmo reindirizzare il traffico sul cluster di produzione verso il nuovo database, oppure il cluster potrebbe andare in crash \u2014 e migriamo sul backup, ma continuiamo a lavorare con il database di produzione. Infine, c'\u00e8 la terza opzione, in cui entrambe le componenti si guastano, e dobbiamo reindirizzare entrambe le applicazioni e ridefinire la nostra configurazione in modo che le nuove applicazioni funzionino con il nuovo database. <\/p>\n

    E, quindi, quali conclusioni possiamo trarre da tutto questo? <\/p>\n

    \"Riserva
    \n
    \nPrima conclusione: vivere con un backup \u00e8 positivo. Ma \u00e8 costoso. Idealmente, non dovremmo avere solo un backup. In teoria, dovremmo vivere con pi\u00f9 riserve. Innanzitutto, il backup deve trovarsi in almeno un altro data center, e in secondo luogo, deve essere con un altro fornitore. Spesso \u00e8 accaduto \u2014 e nella mia esperienza \u00e8 successo. Purtroppo non posso nominare i progetti, proprio quando ci fu l'incendio nel data center... Io dicevo: passiamo al backup! E i server di riserva erano nella stessa rack...<\/p>\n

    Oppure immaginate che Amazon venga bloccato in Russia (e questo \u00e8 successo). E tutto qui: che utilit\u00e0 ha il nostro backup in un altro amazon se non \u00e8 accessibile? Quindi ripeto: manteniamo il backup, almeno in un altro data center e, se possibile, con un altro fornitore. <\/p>\n

    \u0412\u0442\u043e\u0440\u043e\u0439 \u0432\u044b\u0432\u043e\u0434: \u0435\u0441\u043b\u0438 \u0443 \u0432\u0430\u0441 \u0432 \u043a\u0443\u0431\u0435\u0440\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043e\u0431\u0449\u0430\u0435\u0442\u0441\u044f \u0441 \u043a\u0430\u043a\u0438\u043c\u0438-\u0442\u043e \u0432\u043d\u0435\u0448\u043d\u0438\u043c\u0438 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0430\u043c\u0438 (\u044d\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043a\u0430\u043a \u0431\u0430\u0437\u0430 \u0434\u0430\u043d\u043d\u044b\u0445, \u0442\u0430\u043a \u0438 \u043a\u0430\u043a\u043e\u0435-\u0442\u043e \u0432\u043d\u0435\u0448\u043d\u0435\u0435 api), \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u0435\u0433\u043e \u043a\u0430\u043a \u0441\u0435\u0440\u0432\u0438\u0441 \u0441 \u0432\u043d\u0435\u0448\u043d\u0438\u043c Endpoint’\u043e\u043c, \u0447\u0442\u043e\u0431\u044b \u0432 \u043c\u043e\u043c\u0435\u043d\u0442 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043d\u0435 \u043f\u0435\u0440\u0435\u0434\u0435\u043f\u043b\u043e\u0438\u0432\u0430\u0442\u044c 15 \u0432\u0430\u0448\u0438\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0441\u0442\u0443\u0447\u0430\u0442\u0441\u044f \u0432 \u0442\u0443 \u0436\u0435 \u0441\u0430\u043c\u0443\u044e \u0431\u0430\u0437\u0443. \u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u0431\u0430\u0437\u0443 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u043c \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u043c, \u0441\u0442\u0443\u0447\u0438\u0442\u0435\u0441\u044c \u0432 \u043d\u0435\u0435, \u043a\u0430\u043a \u0431\u0443\u0434\u0442\u043e \u043e\u043d\u0430 \u0443 \u0432\u0430\u0441 \u0432\u043d\u0443\u0442\u0440\u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430: \u0435\u0441\u043b\u0438 \u0443 \u0432\u0430\u0441 \u043d\u0430\u0432\u0435\u0440\u043d\u0451\u0442\u0441\u044f \u0431\u0430\u0437\u0430, \u0432\u044b \u0432 \u043e\u0434\u043d\u043e\u043c \u043c\u0435\u0441\u0442\u0435 \u043c\u0435\u043d\u044f\u0435\u0442\u0435 ip \u0438 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0435 \u0436\u0438\u0442\u044c \u0441\u0447\u0430\u0441\u0442\u043b\u0438\u0432\u043e. <\/p>\n

    And finally: I love 'K8s', as well as experimenting with it. I also enjoy sharing the results of these experiments and my personal experiences. That\u2019s why I recorded a series of webinars about K8s, welcome to our YouTube channel<\/a><\/noindex> for more details.
    \n
    Fonte:     habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

    \u041c\u0435\u043d\u044f \u0437\u043e\u0432\u0443\u0442 \u0421\u0435\u0440\u0433\u0435\u0439, \u044f \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 ITSumma, \u0438 \u044f \u0445\u043e\u0447\u0443 \u0432\u0430\u043c \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u0442\u044c, \u043a\u0430\u043a \u043c\u044b \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u043c \u043a \u0440\u0435\u0437\u0435\u0440\u0432\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e \u0432 Kubernetes. \u0412 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u044f \u043c\u043d\u043e\u0433\u043e \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0441\u044c \u043a\u043e\u043d\u0441\u0443\u043b\u044c\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u043e\u0439 \u043f\u043e \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044e \u0440\u0430\u0437\u043d\u043e\u043e\u0431\u0440\u0430\u0437\u043d\u044b\u0445 devops-\u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u043a\u043e\u043c\u0430\u043d\u0434, \u0438, \u0432 \u0447\u0430\u0441\u0442\u043d\u043e\u0441\u0442\u0438, \u043f\u043b\u043e\u0442\u043d\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u044e \u043f\u043e \u043f\u0440\u043e\u0435\u043a\u0442\u0430\u043c \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c K8s. \u041d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 Uptime day 4, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0431\u044b\u043b\u0430 \u043f\u043e\u0441\u0432\u044f\u0449\u0435\u043d\u0430 \u0440\u0435\u0437\u0435\u0440\u0432\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e \u0432 \u0441\u043b\u043e\u0436\u043d\u044b\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25449,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-33773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Prenotazione in Kubernetes: esiste | ProHoster","description":"My name is Sergey, I\u2019m from ITSumma, and I want to tell you how we approach backup in Kubernetes. Recently, I\u2019ve been heavily involved in consulting on various DevOps solutions for different teams, and specifically, I\u2019ve been working closely on projects using K8s. At the Uptime Day 4 conference, which was dedicated to backup in complex environments.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/administrirovanie\/rezervirovanie-v-kubernetes-ono-sushhestvuet","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0420\u0435\u0437\u0435\u0440\u0432\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 Kubernetes: \u043e\u043d\u043e \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 | ProHoster","og:description":"\u041c\u0435\u043d\u044f \u0437\u043e\u0432\u0443\u0442 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