{"id":71895,"date":"2020-02-29T08:54:01","date_gmt":"2020-02-29T05:54:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/klasterizacziya-v-proxmox-ve"},"modified":"2020-03-03T16:14:07","modified_gmt":"2020-03-03T13:14:07","slug":"klasterizacziya-v-proxmox-ve","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/klasterizacziya-v-proxmox-ve","title":{"rendered":"Klasifikace v Proxmox VE","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/041268b9d5304cdae5a984f07a2fa029.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nV p\u0159edchoz\u00edch \u010dl\u00e1nc\u00edch jsme za\u010dali vypr\u00e1v\u011bt o tom, co je Proxmox VE a jak funguje. Dnes si pov\u00edme, jak vyu\u017e\u00edt mo\u017enosti klastry a uk\u00e1\u017eeme, jak\u00e9 v\u00fdhody to p\u0159in\u00e1\u0161\u00ed.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nCo je tedy cluster a pro\u010d je pot\u0159ebn\u00fd? Cluster (z anglick\u00e9ho cluster) je skupina server\u016f propojen\u00fdch rychl\u00fdmi komunika\u010dn\u00edmi kan\u00e1ly, pracuj\u00edc\u00ed jako celek a prezentuj\u00edc\u00ed se u\u017eivatel\u016fm jako jednotn\u00e1 entita. Existuje n\u011bkolik z\u00e1kladn\u00edch sc\u00e9n\u00e1\u0159\u016f vyu\u017eit\u00ed clusteru:<\/p>\n<ul>\n<li><b>Zaji\u0161t\u011bn\u00ed vysok\u00e9 dostupnosti<\/b> (High-availability).<\/li>\n<li><b>Vyva\u017eov\u00e1n\u00ed z\u00e1t\u011b\u017ee<\/b> (Load Balancing).<\/li>\n<li><b>Zv\u00fd\u0161en\u00ed v\u00fdkonu<\/b> (High Performance).<\/li>\n<li><b>Prov\u00e1d\u011bn\u00ed distribuovan\u00fdch v\u00fdpo\u010dt\u016f<\/b> (Distributed computing).<\/li>\n<\/ul>\n<p>\nKa\u017ed\u00fd sc\u00e9n\u00e1\u0159 m\u00e1 sv\u00e9 vlastn\u00ed po\u017eadavky na komponenty clusteru. Nap\u0159\u00edklad pro cluster prov\u00e1d\u011bj\u00edc\u00ed distribuovan\u00e9 v\u00fdpo\u010dty je hlavn\u00edm po\u017eadavkem vysok\u00e1 rychlost prov\u00e1d\u011bn\u00ed operac\u00ed s plovouc\u00ed desetinnou \u010d\u00e1rkou a n\u00edzk\u00e1 latence s\u00edt\u011b. Takov\u00e9 clustery jsou \u010dasto pou\u017e\u00edv\u00e1ny pro v\u011bdeck\u00e9 \u00fa\u010dely.<\/p>\n<p>Jeliko\u017e jsme se dotkli t\u00e9matu distribuovan\u00fdch v\u00fdpo\u010dt\u016f, je dobr\u00e9 zm\u00ednit, \u017ee existuje tak\u00e9 koncept <b>grid-syst\u00e9mu<\/b> (z anglick\u00e9ho grid \u2014 m\u0159\u00ed\u017e, s\u00ed\u0165). I p\u0159es obecnou podobnost nen\u00ed dobr\u00e9 zam\u011b\u0148ovat grid-syst\u00e9m a cluster. Grid nen\u00ed klasick\u00fdm clusterem v b\u011b\u017en\u00e9m pojet\u00ed. Na rozd\u00edl od clusteru jsou uzly tvo\u0159\u00edc\u00ed grid nej\u010dast\u011bji heterogenn\u00ed a maj\u00ed n\u00edzkou dostupnost. Tento p\u0159\u00edstup zjednodu\u0161uje \u0159e\u0161en\u00ed \u00fakol\u016f distribuovan\u00fdch v\u00fdpo\u010dt\u016f, ale neumo\u017e\u0148uje vytvo\u0159it z uzl\u016f jednotnou entitu.<\/p>\n<blockquote><p>V\u00fdrazn\u00fdm p\u0159\u00edkladem grid-syst\u00e9mu je popul\u00e1rn\u00ed v\u00fdpo\u010detn\u00ed platforma <noindex><a rel=\"nofollow\" href=\"https:\/\/boinc.berkeley.edu\/\">BOINC<\/a><\/noindex> (Berkeley Open Infrastructure for Network Computing). Tato platforma byla p\u016fvodn\u011b vytvo\u0159ena pro projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/setiathome.ssl.berkeley.edu\/\">SETI@home<\/a><\/noindex> (Search for Extra-Terrestrial Intelligence at Home), kter\u00fd se zab\u00fdv\u00e1 hled\u00e1n\u00edm mimozemsk\u00e9ho \u017eivota anal\u00fdzou r\u00e1diov\u00fdch sign\u00e1l\u016f.<\/p><\/blockquote>\n<p><b class=\"spoiler_title\">Jak to funguje<\/b>Obrovsk\u00fd objem dat z\u00edskan\u00fdch z r\u00e1dioteleskop\u016f je rozd\u011blen na mnoho men\u0161\u00edch \u010d\u00e1st\u00ed, kter\u00e9 jsou odes\u00edl\u00e1ny na uzly grid-syst\u00e9mu (v projektu SETI@home hraj\u00ed roli takov\u00fdch uzl\u016f po\u010d\u00edta\u010de dobrovoln\u00edk\u016f). Data jsou zpracov\u00e1v\u00e1na na uzlech a po dokon\u010den\u00ed zpracov\u00e1n\u00ed jsou odes\u00edl\u00e1na na centr\u00e1ln\u00ed server projektu SETI. Takto projekt \u0159e\u0161\u00ed slo\u017eit\u00fd glob\u00e1ln\u00ed probl\u00e9m, ani\u017e by m\u011bl k dispozici pot\u0159ebn\u00e9 v\u00fdpo\u010detn\u00ed mo\u017enosti.<\/p>\n<p>Nyn\u00ed, kdy\u017e m\u00e1me jasnou p\u0159edstavu o tom, co je cluster, pod\u00edv\u00e1me se, jak ho lze vytvo\u0159it a implementovat. Budeme pou\u017e\u00edvat syst\u00e9m virtualizace s otev\u0159en\u00fdm zdrojov\u00fdm k\u00f3dem. <noindex><a rel=\"nofollow\" href=\"http:\/\/www.proxmox.com\/en\/proxmox-ve\">Proxmox VE<\/a><\/noindex>.<\/p>\n<p>Je obzvl\u00e1\u0161\u0165 d\u016fle\u017eit\u00e9 p\u0159ed t\u00edm, ne\u017e za\u010dneme vytv\u00e1\u0159et cluster, jasn\u011b ch\u00e1pat omezen\u00ed a syst\u00e9mov\u00e9 po\u017eadavky Proxmox, a to konkr\u00e9tn\u011b:<\/p>\n<ul>\n<li>maxim\u00e1ln\u00ed po\u010det uzl\u016f v clusteru \u2014 <b>32<\/b>;<\/li>\n<li>v\u0161echny uzly mus\u00ed m\u00edt <b>shodnou verzi Proxmox<\/b> (existuj\u00ed v\u00fdjimky, ale pro produkci se nedoporu\u010duj\u00ed);<\/li>\n<li>pokud pl\u00e1nujete vyu\u017e\u00edt funkci vysok\u00e9 dostupnosti, mus\u00ed b\u00fdt v clusteru <b>alespo\u0148 3 uzly<\/b>;<\/li>\n<li>pro vz\u00e1jemnou komunikaci uzl\u016f mus\u00ed b\u00fdt otev\u0159eny porty <b>UDP\/5404<\/b>, <b>UDP\/5405<\/b> pro corosync a <b>TCP\/22<\/b> pro SSH;<\/li>\n<li>zpo\u017ed\u011bn\u00ed v s\u00edti mezi uzly by nem\u011blo p\u0159ekro\u010dit <b>2 ms<\/b>.<\/li>\n<\/ul>\n<p><\/p>\n<h2>Vytvo\u0159en\u00ed clusteru<\/h2>\n<p>\n<b>D\u016fle\u017eit\u00e9! N\u00e1sleduj\u00edc\u00ed konfigurace je testovac\u00ed. Nezapome\u0148te se porovnat s <noindex><a rel=\"nofollow\" href=\"https:\/\/pve.proxmox.com\/pve-docs\/pve-admin-guide.pdf\">ofici\u00e1ln\u00ed dokumentac\u00ed<\/a><\/noindex> Proxmox VE.<\/b><\/p>\n<p>Abychom spustili testovac\u00ed cluster, vzali jsme t\u0159i servery s nainstalovan\u00fdm hypervizorem Proxmox se shodnou konfigurac\u00ed (2 j\u00e1dra, 2 GB RAM).<\/p>\n<blockquote><p>Pokud chcete zjistit, jak nainstalovat Proxmox, doporu\u010dujeme si p\u0159e\u010d\u00edst n\u00e1\u0161 p\u0159edchoz\u00ed \u010dl\u00e1nek \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/selectel\/blog\/483236\/\">Magie virtualizace: \u00favodn\u00ed kurz do Proxmox VE<\/a><\/noindex>.<\/p><\/blockquote>\n<p>P\u016fvodn\u011b, po instalaci OS, jednor\u00e1zov\u00fd server pracuje v <b>Standalone-mode<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/07bb2294b5ccd096c868786e20c14200.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nVytvo\u0159\u00edme cluster kliknut\u00edm na tla\u010d\u00edtko <b>Create Cluster<\/b> v p\u0159\u00edslu\u0161n\u00e9m odd\u00edle.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/a816a86de93a5f97b388490b92e122df.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nZad\u00e1me n\u00e1zev budouc\u00edho clusteru a vybereme aktivn\u00ed s\u00ed\u0165ov\u00e9 p\u0159ipojen\u00ed.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/0b37004b271fccd14917190589081a6c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nKlikneme na tla\u010d\u00edtko Create. Server vygeneruje 2048bitov\u00fd kl\u00ed\u010d a zap\u00ed\u0161e ho spolu s parametry nov\u00e9ho clusteru do konfigura\u010dn\u00edch soubor\u016f.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/3c6aeaf5b175c2246ba2dea0dcbeb795.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nN\u00e1pis <b>TASK OK<\/b> potvrzuje \u00fasp\u011b\u0161n\u00e9 dokon\u010den\u00ed operace. Nyn\u00ed, p\u0159i pohledu na obecn\u00e9 informace o syst\u00e9mu, je vid\u011bt, \u017ee server p\u0159e\u0161el do re\u017eimu clusteru. Zat\u00edm je cluster slo\u017een pouze z jednoho uzlu, tak\u017ee zat\u00edm nem\u00e1 mo\u017enosti, kv\u016fli kter\u00fdm je cluster pot\u0159ebn\u00fd.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/b5d1ed1e09f055bc1ed82dfdde3e2e62.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>P\u0159ipojen\u00ed k clusteru<\/h2>\n<p>\nP\u0159ed t\u00edm, ne\u017e se p\u0159ipoj\u00edme k vytvo\u0159en\u00e9mu clusteru, mus\u00edme z\u00edskat informace pro proveden\u00ed p\u0159ipojen\u00ed. Pro tento \u00fa\u010del p\u0159ejdeme do sekce <b>Cluster<\/b> a stiskneme tla\u010d\u00edtko <b>Join Information<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/ff7bb8a493d26cb28d475fe0624f784f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nV otev\u0159en\u00e9m okn\u011b n\u00e1s zaj\u00edm\u00e1 obsah toto\u017en\u00e9ho pole. Ten je pot\u0159eba zkop\u00edrovat.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/bc26af19c074ba8b4f7b359d7bd65301.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nZde jsou zak\u00f3dov\u00e1ny v\u0161echny pot\u0159ebn\u00e9 parametry pro p\u0159ipojen\u00ed: adresa serveru k p\u0159ipojen\u00ed a digit\u00e1ln\u00ed otisk. P\u0159ejdeme na server, kter\u00fd m\u00e1 b\u00fdt za\u0159azen do clusteru. Klikneme na tla\u010d\u00edtko <b>Join Cluster<\/b> a v otev\u0159en\u00e9m okn\u011b vlo\u017ete zkop\u00edrovan\u00fd obsah.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/4670181c99cc1f1446c418fc0702c583.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nPole <b>Adresa peer<\/b> a <b>Fingerprint<\/b> budou vypln\u011bny automaticky. Zadejte heslo root pro uzel \u010d\u00edslo 1, vyberte s\u00ed\u0165ov\u00e9 p\u0159ipojen\u00ed a stiskn\u011bte tla\u010d\u00edtko <b>P\u0159ipojit<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/e9c3e2c255332422ad27b52634fef2fe.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nB\u011bhem procesu p\u0159ipojov\u00e1n\u00ed k clustru se webov\u00e1 str\u00e1nka GUI m\u016f\u017ee p\u0159estat aktualizovat. To je v po\u0159\u00e1dku, sta\u010d\u00ed str\u00e1nku znovu na\u010d\u00edst. Stejn\u00fdm zp\u016fsobem p\u0159id\u00e1me dal\u0161\u00ed uzel a nakonec z\u00edsk\u00e1me plnohodnotn\u00fd cluster ze 3 funk\u010dn\u00edch uzl\u016f.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/94727cbe4f161213505e8f197c1382aa.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nNyn\u00ed m\u016f\u017eeme \u0159\u00eddit v\u0161echny uzly clustru z jednoho GUI.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/faed8fc852de04fbfb465a66bf2c4e52.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Organizace vysok\u00e9 dostupnosti<\/h2>\n<p>\nProxmox \u201eout of the box\u201c podporuje funk\u010dnost organizace HA jak pro virtu\u00e1ln\u00ed stroje, tak pro LXC kontejnery. N\u00e1stroj <b>ha-manager<\/b> detekuje a reaguje na chyby a selh\u00e1n\u00ed, prov\u00e1d\u00ed p\u0159epnut\u00ed na funk\u010dn\u00ed uzel v p\u0159\u00edpad\u011b selh\u00e1n\u00ed. Aby mechanismus fungoval spr\u00e1vn\u011b, mus\u00ed m\u00edt virtu\u00e1ln\u00ed stroje a kontejnery spole\u010dn\u00e9 \u00falo\u017ei\u0161t\u011b soubor\u016f.<\/p>\n<p>Po aktivaci funk\u010dnosti vysok\u00e9 dostupnosti za\u010dne softwarov\u00fd stack ha-manager nep\u0159etr\u017eit\u011b sledovat stav virtu\u00e1ln\u00edho stroje nebo kontejneru a asynchronn\u011b komunikovat s ostatn\u00edmi uzly clustru.<\/p>\n<h3>P\u0159ipojujeme sd\u00edlen\u00e9 \u00falo\u017ei\u0161t\u011b<\/h3>\n<p>\nPro p\u0159\u00edklad jsme nasadili mal\u00e9 NFS \u00falo\u017ei\u0161t\u011b na adrese 192.168.88.18. Aby v\u0161echny uzly clustru mohly pou\u017e\u00edvat, je pot\u0159eba prov\u00e9st n\u00e1sleduj\u00edc\u00ed kroky.<\/p>\n<p>Vybereme v menu webov\u00e9ho rozhran\u00ed <b>Datacenter \u2014 Storage \u2014 P\u0159idat \u2014 NFS<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/47719648825a22894088c313fefc4a7d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nVypl\u0148te pole <b>ID<\/b> a <b>Server<\/b>. V rozbalovac\u00ed nab\u00eddce <b>Export<\/b> vyberte po\u017eadovan\u00fd adres\u00e1\u0159 z dostupn\u00fdch a v seznamu <b>Obsah<\/b> \u2014 pot\u0159ebn\u00e9 typy dat. Po kliknut\u00ed na tla\u010d\u00edtko <b>P\u0159idat<\/b> bude \u00falo\u017ei\u0161t\u011b p\u0159ipojeno ke v\u0161em uzl\u016fm clustru.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/aff4b32a586b83c7bdb7d5618e1bbc19.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nP\u0159i vytv\u00e1\u0159en\u00ed virtu\u00e1ln\u00edch stroj\u016f a kontejner\u016f na libovoln\u00e9m z uzl\u016f uv\u00e1d\u00edme na\u0161e <b>\u00falo\u017ei\u0161t\u011b<\/b> jako \u00falo\u017ei\u0161t\u011b.<\/p>\n<h3>Nastavujeme HA<\/h3>\n<p>\nPro p\u0159\u00edklad vytvo\u0159\u00edme kontejner s Ubuntu 18.04 a nastav\u00edme pro n\u011bj vysokou dostupnost. Po vytvo\u0159en\u00ed a spu\u0161t\u011bn\u00ed kontejneru p\u0159ejdeme do sekce <b>Datacenter \u2014 HA \u2014 P\u0159idat<\/b>. V otev\u0159en\u00e9m poli uvedeme ID virtu\u00e1ln\u00edho stroje\/kontejneru a maxim\u00e1ln\u00ed po\u010det pokus\u016f o restart a p\u0159esun mezi uzly.<\/p>\n<blockquote><p>Pokud toto mno\u017estv\u00ed bude p\u0159ekro\u010deno, hypervizor ozna\u010d\u00ed VM jako selhanou a p\u0159evede do stavu Chyba, po \u010dem\u017e p\u0159estane vykon\u00e1vat jak\u00e9koliv akce.<\/p><\/blockquote>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/2b3b06b6db91e9db333e2b08473b5578.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nPo stisknut\u00ed tla\u010d\u00edtka <b>P\u0159idat<\/b> utilita <b>ha-manager<\/b> ozn\u00e1men\u00ed v\u0161em uzl\u016fm klastru, \u017ee nyn\u00ed je VM s uveden\u00fdm ID \u0159\u00edzena a v p\u0159\u00edpad\u011b selh\u00e1n\u00ed ji je t\u0159eba restartovat na jin\u00e9m uzlu.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/19a96ff579a921a3171a904bb3ec35eb.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h3>Zp\u016fsob\u00edme selh\u00e1n\u00ed<\/h3>\n<p>\nAbychom vid\u011bli, jak p\u0159esn\u011b mechanismus p\u0159ep\u00edn\u00e1n\u00ed funguje, odpojmeme ne\u010dekan\u011b node1 od nap\u00e1jen\u00ed. Sledujeme z jin\u00e9ho uzlu, co se d\u011bje s klastrem. Vid\u00edme, \u017ee syst\u00e9m zaznamenal selh\u00e1n\u00ed.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/ff1bd10589325413bf9914c2a73bf0ed.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<blockquote><p>Funkce mechanismu HA neznamen\u00e1 nep\u0159etr\u017eit\u00e9 fungov\u00e1n\u00ed VM. Jakmile uzel \u201esel\u017ee\u201c, \u010dinnost VM se do\u010dasn\u011b zastav\u00ed do doby automatick\u00e9ho restartu na jin\u00e9m uzlu.<\/p><\/blockquote>\n<p>A te\u010f nast\u00e1v\u00e1 \u201ekouzlo\u201c \u2014 klastr automaticky p\u0159id\u011blil uzel pro prov\u00e1d\u011bn\u00ed na\u0161\u00ed VM a b\u011bhem 120 sekund byla \u010dinnost automaticky obnovena.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/3174e1df06f57092e05825fa1302592f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nOdpojujeme node2 od nap\u00e1jen\u00ed. Pod\u00edv\u00e1me se, zda klastr vydr\u017e\u00ed a zda se VM automaticky vr\u00e1t\u00ed do pracovn\u00edho stavu.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/771d4e629c75e6b895d0c11348a66a8e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nBohu\u017eel, jak vid\u00edme, m\u00e1me probl\u00e9m, \u017ee na jedin\u00e9m zb\u00fdvaj\u00edc\u00edm uzlu nen\u00ed dostatek kv\u00f3ra, co\u017e automaticky deaktivuje \u010dinnost HA. V konzoli d\u00e1me p\u0159\u00edkaz pro vynucen\u00ed nastaven\u00ed kv\u00f3ra.<\/p>\n<pre><code class=\"plaintext\">pvecm o\u010dek\u00e1val 1<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/00a573876894377304084d5eeed6275c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nPo dvou minut\u00e1ch mechanismus HA fungoval spr\u00e1vn\u011b a nena\u0161el-li node2, spustil na\u0161i VM na node3.<\/p>\n<p><img decoding=\"async\" alt=\"Klasifikace v Proxmox VE\" src=\"\/wp-content\/uploads\/2020\/02\/dda03dbc36955eba356ad1e902ddd5ef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nJakmile jsme op\u011bt zapnuli node1 a node2, \u010dinnost klastru byla pln\u011b obnovena. V\u0161imn\u011bte si, \u017ee VM se sama na node1 nep\u0159esune, ale lze to prov\u00e9st ru\u010dn\u011b.<\/p>\n<h2>Shrnut\u00ed<\/h2>\n<p>\nPov\u011bd\u011bli jsme v\u00e1m, jak funguje mechanismus clusteringu v Proxmoxu, a tak\u00e9 jsme uk\u00e1zali, jak se nastavuje HA pro virtu\u00e1ln\u00ed stroje a kontejnery. Spr\u00e1vn\u00e9 vyu\u017e\u00edv\u00e1n\u00ed clusteringu a HA v\u00fdznamn\u011b zvy\u0161uje spolehlivost infrastruktury a tak\u00e9 zaji\u0161\u0165uje zotaven\u00ed po selh\u00e1n\u00ed.<\/p>\n<p>P\u0159ed vytvo\u0159en\u00edm klastru je nutn\u00e9 hned napl\u00e1novat, k jak\u00fdm \u00fa\u010del\u016fm bude vyu\u017e\u00edv\u00e1n a jak moc bude v budoucnu pot\u0159eba \u0161k\u00e1lovat. Tak\u00e9 je t\u0159eba zkontrolovat s\u00ed\u0165ovou infrastrukturu zda je p\u0159ipravena pracovat s minim\u00e1ln\u00edmi zpo\u017ed\u011bn\u00edmi, aby budouc\u00ed klastr fungoval bez selh\u00e1n\u00ed.<\/p>\n<p>Dejte n\u00e1m v\u011bd\u011bt \u2014 pou\u017e\u00edv\u00e1te mo\u017enosti clusteringu v Proxmoxu? T\u011b\u0161\u00edme se na va\u0161e koment\u00e1\u0159e.<\/p>\n<p><i>P\u0159edchoz\u00ed \u010dl\u00e1nky na t\u00e9ma hypervizoru Proxmox VE:<\/i><\/p>\n<ul>\n<li><i><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/selectel\/blog\/483236\/\">Magie virtualizace: \u00favodn\u00ed kurz do Proxmox VE<\/a><\/noindex><\/i><\/li>\n<li><i><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/selectel\/blog\/486194\/\">O z\u00e1loh\u00e1ch v Proxmox VE<\/a><\/noindex><\/i><\/li>\n<\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/selectel\/blog\/489914\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0441\u0442\u0430\u0442\u044c\u044f\u0445 \u043c\u044b \u043d\u0430\u0447\u0430\u043b\u0438 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u043e \u0442\u043e\u043c, \u0447\u0442\u043e \u0442\u0430\u043a\u043e\u0435 Proxmox VE \u0438 \u043a\u0430\u043a \u043e\u043d \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043c\u044b \u0440\u0430\u0441\u0441\u043a\u0430\u0436\u0435\u043c \u043e \u0442\u043e\u043c, \u043a\u0430\u043a \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u043a\u0430\u0436\u0435\u043c \u043a\u0430\u043a\u0438\u0435 \u043f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u0430 \u044d\u0442\u043e \u0434\u0430\u0435\u0442. \u0427\u0442\u043e \u0436\u0435 \u0442\u0430\u043a\u043e\u0435 \u043a\u043b\u0430\u0441\u0442\u0435\u0440 \u0438 \u0437\u0430\u0447\u0435\u043c \u043e\u043d \u043d\u0443\u0436\u0435\u043d? \u041a\u043b\u0430\u0441\u0442\u0435\u0440 (\u043e\u0442 \u0430\u043d\u0433\u043b. cluster) \u2014 \u044d\u0442\u043e \u0433\u0440\u0443\u043f\u043f\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u043d\u044b\u043c\u0438 \u043a\u0430\u043d\u0430\u043b\u0430\u043c\u0438 \u0441\u0432\u044f\u0437\u0438, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0430\u044f \u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f\u0441\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":71896,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-71895","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=\"\u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0441\u0442\u0430\u0442\u044c\u044f\u0445 \u043c\u044b \u043d\u0430\u0447\u0430\u043b\u0438 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u043e \u0442\u043e\u043c, \u0447\u0442\u043e \u0442\u0430\u043a\u043e\u0435.\" \/>\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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