{"id":5061,"date":"2014-03-13T11:10:23","date_gmt":"2014-03-13T10:10:23","guid":{"rendered":"http:\/\/blog.websupport.sk\/?p=5061"},"modified":"2025-03-11T21:06:23","modified_gmt":"2025-03-11T20:06:23","slug":"nova-generacia-virtualnych-serverov","status":"publish","type":"post","link":"https:\/\/www.websupport.sk\/blog\/2014\/03\/nova-generacia-virtualnych-serverov\/","title":{"rendered":"Nov\u00e1 gener\u00e1cia virtu\u00e1lnych serverov (2014)"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\"><b>Doba \u010d\u00edtania:<\/b><\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span><p>Virtu\u00e1lne priv\u00e1tne servery pon\u00fakame u\u017e \u0161iesty rok, tak\u017ee \u010do m\u00e1me nov\u00e9? V\u0161etko. Vyrie\u0161ili sme kone\u010dne spravovaciu vrstvu nad virtu\u00e1lnymi strojmi. Cestou sme sa nepl\u00e1novane stali preborn\u00edkmi na <strong>OpenStack<\/strong> a <strong>CFEngine<\/strong> a v\u0161etku t\u00fa robotu okolo virtu\u00e1lnych ma\u0161\u00edn sme zmenili na klika\u010dku. Bola to drina. Ak ste zva\u017eovali vlastn\u00fa produk\u010dn\u00fa implement\u00e1ciu OpenStacku a chcete mana\u017e\u00e9rske zhrnutie &#8211; je to super, ale pokojne e\u0161te rok po\u010dkajte.<!--more--><\/p>\n<p>Ale po poriadku. M\u00e1m nap\u00edsa\u0165 blog o VPS, tak idem na to chronologicky. My pam\u00e4tn\u00edci sa elit\u00e1rsky u\u0161k\u0155\u0148ame nad t\u00fdmi, \u010do pokladaj\u00fa virtualiz\u00e1ciu za novinku. U\u017e za\u010diatkom dev\u00e4\u0165desiatych rokov mi na univerzite vysvet\u013eovali maz\u00e1ci, ako \u201codjak\u017eiva\u201d na IBM mainframoch i\u0161lo oddeli\u0165 fyzick\u00fa vrstvu a virtu\u00e1lnym no\u017eom rozreza\u0165 server na oddelen\u00e9 virtu\u00e1lne po\u010d\u00edta\u010dov\u00e9 platformy, kde si ka\u017ed\u00e1 \u017eije svoj\u00edm vlastn\u00fdm \u017eivotom. Aj na <strong>VAX<\/strong>-och \u0161lo tak\u00e9 \u010dosi spravi\u0165, len\u017ee to u\u017e s pr\u00edchodom Internetu nabiehala doba UNIXov\u00e1 a tam to ne\u0161lo. Cel\u00e1 t\u00e9ma zapadla prachom a ke\u010f sa vo svete UNIXu okolo roku 2000 ob\u010das nie\u010do objavilo, bolo to ak\u00e9si rozpa\u010dit\u00e9. Pracoval som vtedy v nebohom Sun Microsystems, ten bol v oblasti virtualiz\u00e1cie UNIXov vcelku priekopn\u00edk. Sun Enterprise 10000 bol napr\u00edklad tak\u00fd poh\u013eadn\u00fd stroj, \u010do sa dal rozde\u013eova\u0165 na \u201cdom\u00e9ny\u201d a nesk\u00f4r aj na \u201ckontajnery\u201d, ale zoznam s t\u00fdm s\u00favisiacich obmedzen\u00ed plnil zna\u010dn\u00fa \u010das\u0165 prev\u00e1dzkov\u00e9ho manu\u00e1lu.<\/p>\n<p>Potom pri\u0161iel <strong>VMware <\/strong>a <strong>Xen<\/strong> na X86 architekt\u00fare, ktor\u00e1 medzit\u00fdm odstr\u010dila <strong>RISCy<\/strong> na geriatrick\u00e9 oddelenie &#8211; my sme sa vo WebSupporte chytili pr\u00e1ve toho Xen-u a v roku 2008 uviedli na trh hostingov\u00fd VPS produkt. Xen fungoval dobre. Ve\u013emi pomohlo, \u017ee procesory u\u017e vtedy priamo virtualiz\u00e1ciu podporovali, zn\u00ed\u017eila sa t\u00fdm r\u00e9\u017eia. Ak niekedy budete potrebova\u0165 vysvetli\u0165 laikovi, ako funguje hypervizor, sk\u00faste to takto: Predstavte si dia\u013enicu pln\u00fa \u00e1ut. V\u00e4\u010d\u0161inou je v ka\u017edom aute len jeden \u010dlovek. Hypervizor sprav\u00ed to, \u017ee str\u010d\u00ed do ka\u017ed\u00e9ho auta viacer\u00fdch \u013eud\u00ed a zakryje im o\u010di, tak\u017ee si ka\u017ed\u00fd mysl\u00ed, \u017ee sa vezie s\u00e1m. (Toto vlastne nie je len dobr\u00e1 anal\u00f3gia k serverom, ale aj skvel\u00e9 rie\u0161enie zahltenej automobilovej dopravy. Vlastne nie, to u\u017e je technologicky pokryt\u00e9 a vol\u00e1 sa to bicykel.)<\/p>\n<p>Nasp\u00e4\u0165 k veci. Virtualiz\u00e1cia m\u00e1 nespo\u010detn\u00e9 mno\u017estvo v\u00fdhod. Prin\u00e1\u0161a \u00fa\u017easn\u00fa efektivitu a \u0161etr\u00ed tak zdroje. A t\u00fdm aj \u017eivotn\u00e9 prostredie. Odstra\u0148uje probl\u00e9m s pre\u0165a\u017een\u00fdmi servermi na jednej strane a spiacimi ma\u0161inami na druhej strane. Odstra\u0148uje v\u0161etku t\u00fa fyzick\u00fa pr\u00e1cu s in\u0161talovan\u00edm re\u00e1lneho servera &#8211; nosenie, rackovanie \u010di k\u00e1blovanie. Zvy\u0161uje dostupnos\u0165 slu\u017eieb. Lebo ke\u010f to virtualizovan\u00e9 auto havaruje, pasa\u017eierov nen\u00e1padne presunieme do in\u00e9ho auta a fr\u010dia \u010falej. No, nen\u00e1padne ako nen\u00e1padne. Ono s t\u00fdm vlastne aj tak bolo dos\u0165 roboty. Vo WebSupporte sme toti\u017e \u010dasom prev\u00e1dzkovali stovky a stovky VPS a aj ke\u010f ich vytv\u00e1ranie, pres\u00favanie \u010di mazanie zaberalo len desiatky min\u00fat, dokopy to st\u00e1le bolo more pr\u00e1ce.<\/p>\n<p>Preto na sc\u00e9nu vo WebSupporte prich\u00e1dza OpenStack ako platforma na spr\u00e1vu VPS serverov. Je to open-sourcov\u00e1 alternat\u00edva, ktor\u00fa sme zvolili oproti drah\u00e9mu VMware preto, aby sme st\u00e1le dok\u00e1zali pon\u00faka\u0165 cenovo efekt\u00edvne VPS a aj preto, lebo sme akosi zvyknut\u00ed vidie\u0165 veciam pod kapotu. Ako som p\u00edsal v \u00favode, bola to drina nasadi\u0165, dlho sme z\u00e1pasili hlavne so sie\u0165ovou \u010das\u0165ou a na\u0161im adminom patr\u00ed re\u0161pekt, \u00facta a po zverejnen\u00ed na\u0161ich zdroj\u00e1kov \u0161irokej open-source komunite aj nehyn\u00faca sl\u00e1va. OpenStack zmen\u00ed svet izolovan\u00fdch virtualizovan\u00fdch aut\u00ed\u010dok na dia\u013enici na ucelen\u00fd organizmus vlakovej dopravy s bystr\u00fdm riadiacim dispe\u010dingom.<\/p>\n<p>Na svete je teda nov\u00e1 gener\u00e1cia WebSupport VPS serverov be\u017eiacich na nov\u00fdch fyzick\u00fdch \u0161asi Dell M1000e s dvadsiatimi \u0161tyrmi blade servermi M620. Virtu\u00e1lne servery dok\u00e1\u017eeme prehadzova\u0165 medzi jednotliv\u00fdmi blademi bez v\u00fdpadku za zlomky sek\u00fand a na pozad\u00ed n\u00e1m be\u017e\u00ed vlastn\u00fd sofistikovan\u00fd algoritmus, ktor\u00fd priebe\u017ene rozklad\u00e1 z\u00e1\u0165a\u017e medzi jednotliv\u00e9 fyzick\u00e9 servery.<\/p>\n<p>Okrem infra\u0161trukt\u00fary sme zapracovali aj na pou\u017e\u00edvate\u013eskej \u010dasti VPS. Odteraz sa VPS vytvor\u00ed len p\u00e1r sek\u00fand po objedn\u00e1vke a vo WebAdmine n\u00e1jdete \u00faplne nov\u00fa \u010das\u0165 mana\u017ementu VPS. V nej si dok\u00e1\u017eete zmeni\u0165 parametre ako CPU, pam\u00e4\u0165 alebo disk a za chodu dokupova\u0165 jednotliv\u00e9 zdroje. Jedn\u00fdm klikom m\u00f4\u017eete server re\u0161tartova\u0165, vypn\u00fa\u0165, zastavi\u0165 alebo ho ovl\u00e1da\u0165cez \u0161ikovn\u00fa webovsk\u00fa konzolu.<\/p>\n<p>Je n\u00e1m jasn\u00e9, \u017ee je toho na zlep\u0161enie e\u0161te neuverite\u013ene ve\u013ea: dockers, lep\u0161\u00ed mana\u017ement, tvorenie images,\u2026 Aj z tohto d\u00f4vodu sa sna\u017e\u00edme n\u00e1js\u0165 do teamu osobu\/skillera &#8211; Product ownera pre VPS, ktor\u00fd by nastavil v\u00edziu a \u0165ahal vlastn\u00fd t\u00edm k jej naplneniu. Ak m\u00e1te u\u017e teraz v hlave kvantum n\u00e1padov a pripomienok, <a href=\"http:\/\/inhiro.com\/en\/jobBoard\/1283\/product-owner-produktovy-manazer-pre-virtualne-servery\" target=\"_blank\" rel=\"noopener\">prihl\u00e1ste sa<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Virtu\u00e1lne priv\u00e1tne servery pon\u00fakame u\u017e \u0161iesty rok, tak\u017ee \u010do m\u00e1me nov\u00e9? V\u0161etko. Vyrie\u0161ili sme kone\u010dne spravovaciu vrstvu nad virtu\u00e1lnymi strojmi. Cestou sme sa nepl\u00e1novane stali preborn\u00edkmi na OpenStack a CFEngine a v\u0161etku t\u00fa robotu okolo virtu\u00e1lnych ma\u0161\u00edn sme zmenili na klika\u010dku. Bola to drina. Ak ste zva\u017eovali vlastn\u00fa produk\u010dn\u00fa implement\u00e1ciu OpenStacku a chcete mana\u017e\u00e9rske zhrnutie [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":5582,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,7,11],"tags":[141,608,918,927],"class_list":["post-5061","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novinky","category-technologie","category-zakulisie","tag-cfengine","tag-open-stack","tag-virtualny-server","tag-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nov\u00e1 gener\u00e1cia virtu\u00e1lnych serverov (2014) - Websupport blog<\/title>\n<meta name=\"description\" content=\"Virtu\u00e1lne priv\u00e1tne servery pon\u00fakame u\u017e \u0161iesty rok, tak\u017ee \u010do m\u00e1me nov\u00e9? 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