{"id":40567,"date":"2021-04-30T10:00:00","date_gmt":"2021-04-30T09:00:00","guid":{"rendered":"https:\/\/www.soitron.com\/?p=40567"},"modified":"2023-12-08T16:30:06","modified_gmt":"2023-12-08T15:30:06","slug":"bez-softwarove-definovanych-datovych-center-se-firmy-neobejdou","status":"publish","type":"post","link":"https:\/\/new.soitron.com\/cs\/bez-softwarove-definovanych-datovych-center-se-firmy-neobejdou\/","title":{"rendered":"Bez softwarov\u011b definovan\u00fdch datov\u00fdch center se firmy neobejdou"},"content":{"rendered":"\n

Ve firm\u00e1ch i st\u00e1tn\u00edch instituc\u00edch se informa\u010dn\u00ed technologie pod\u00edlej\u00ed u\u017e t\u00e9m\u011b\u0159 na ve\u0161ker\u00fdch procesech. Slo\u017eitost komunika\u010dn\u00edch syst\u00e9m\u016f roste, infrastruktura se mus\u00ed m\u011bnit st\u00e1le rychleji, a p\u0159edev\u0161\u00edm p\u0159izp\u016fsobovat aktu\u00e1ln\u00edm pot\u0159eb\u00e1m. \u0158e\u0161en\u00edm jsou softwarov\u011b definovan\u00e1 datov\u00e1 centra (SD DC). Konkr\u00e9tn\u011b se dnes zam\u011b\u0159\u00edme na komunika\u010dn\u00ed toky v datov\u00fdch centrech.<\/strong><\/p>\n\n\n\n

CO JE TO SDx A JAK DO TOHOTO KONCEPTU ZAPAD\u00c1 SD DC<\/h2>\n\n\n\n

Pod\u00edvejme se nejprve na princip SDx<\/a> jako takov\u00e9ho. Pokud chceme n\u011bco v tradi\u010dn\u00edch datov\u00fdch centrech konfigurovat, mus\u00edme ka\u017ed\u00fd komunika\u010dn\u00ed prvek nastavovat samostatn\u011b, za\u0159\u00edzen\u00ed po za\u0159\u00edzen\u00ed tak abychom dos\u00e1hli po\u017eadovan\u00e9 funkcionality celku. U SDx v\u0161e prov\u00e1d\u00edme z jednoho centr\u00e1ln\u00edho bodu – orchestr\u00e1toru. Do n\u011bj zad\u00e1me pravidla, kter\u00e1 m\u00e1 dan\u00e1 s\u00ed\u0165 splnit. A centr\u00e1ln\u011b \u0159\u00edzen\u00fd orchestr\u00e1tor jednotliv\u00e9 prvky nakonfiguruje.<\/p>\n\n\n\n

Takto m\u016f\u017eeme p\u0159istupovat nap\u0159\u00edklad k routing a p\u0159es SD WAN<\/a> orchestr\u00e1tor konfigurovat, spravovat a optimalizovat p\u0159enosov\u00e9 trasy i mezi kontitenty. Anebo m\u016f\u017eeme SDA<\/a> orchestr\u00e1tor vyu\u017e\u00edt k optimalizaci a nastavov\u00e1n\u00ed o\u017eivatelsk\u00fdch p\u0159\u00edstup\u016f, v LAN s\u00edt\u00edch, klidn\u011b i ve vice geografick\u00fdch lokalit\u00e1ch.<\/p>\n\n\n\n

V p\u0159\u00edpad\u011b datov\u00fdch center n\u00e1m orchestr\u00e1tor umo\u017en\u00ed automatiza\u010dn\u00ed konfiguraci jednotliv\u00fdch komunika\u010dn\u00edch prvk\u016f v prost\u0159ed\u00ed, kter\u00e9 m\u016f\u017ee zahrnovat jednu, ale I vice lokalit (distribu\u010dn\u00ed DC). P\u0159\u00edpadn\u011b \u010d\u00e1st datov\u00e9ho centra m\u016f\u017ee b\u00fdt v cloudu\/cloudech r\u016fzn\u00fdch poskytovatel\u016f.<\/p>\n\n\n\n

U SDx je tak\u00e9 podstatn\u00e9, \u017ee m\u00e1me odd\u011blenou trasu pro konfiguraci a pro data. Ve star\u0161\u00edm legacy sv\u011bt\u011b toto neexistovalo. Jednodu\u0161e \u0159e\u010deno, v SDx sv\u011bt\u011b jsou poprv\u00e9 konfigura\u010dn\u00ed vrstvy (control plane)konfigura\u010dn\u00ed trasy odd\u011blen\u00e9 od t\u011bch datov\u00fdch (data plane) p\u0159enosov\u00fdch. Dal\u0161\u00ed podstatn\u00e1 v\u011bc je, \u017ee se to v\u0161e d\u011bje z jednoho m\u00edsta. T\u00edm p\u00e1dem je n\u00e1m jedno, kolik za\u0159\u00edzen\u00ed v dan\u00e9 s\u00edti m\u00e1me – zda p\u011bt nebo pades\u00e1t.<\/p>\n\n\n\n

\u00daVOD DO LEGACY DC SV\u011aTA<\/h2>\n\n\n\n

P\u0159edstavte si, \u017ee budujeme datov\u00e9 centrum a chceme postavit jednoduchou webovou aplikaci, kter\u00e1 m\u00e1 n\u011bjak\u00e9 logick\u00e9 vrstvy. Prvn\u00ed vrstva aplikace bude frontend, ke kter\u00e9mu se p\u0159ipojuj\u00ed lid\u00e9 z internetu. Samot\u00e9 zpracov\u00e1v\u00e1n\u00ed za\u0159izuje ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f druh\u00e1 vrstva – backend. Ta zpracov\u00e1v\u00e1 po\u017eadavky z frontendu a vyu\u017e\u00edv\u00e1 vstupy z datab\u00e1zov\u00e9 vrstvy. Takto si m\u016f\u017eeme re\u00e1ln\u011b n\u011bjakou aplikaci p\u0159edstavit \u2013 je slo\u017een\u00e1 s frontendu, beckendu a datab\u00e1ze.<\/p>\n\n\n\n

Na ka\u017edou z t\u011bchto vrstev jsou kladen\u00e9 trochu jin\u00e9 po\u017eadavky. U datab\u00e1ze jsou vy\u017eadov\u00e1ny jin\u00e9 n\u00e1roky z oblasti zabezpe\u010den\u00ed, proto\u017ee do n\u00ed maj\u00ed p\u0159\u00edstup jen d\u016fv\u011bryhodn\u00e9 syst\u00e9my. Naopak frontend je otev\u0159en\u00fd do internetu. Tam mus\u00edme bezpe\u010dnostn\u00ed p\u0159\u00edstup \u0159e\u0161it \u00fapln\u011b jinak.<\/p>\n\n\n\n

Aby byl v tradi\u010dn\u00edm datacentru obsah ochr\u00e1n\u011bn, je nutn\u00e9 data zabezpe\u010dit, aby komunikace, kter\u00e1 na frontend p\u0159ich\u00e1z\u00ed, byla za s\u00ed\u0165ov\u00fdm firewallom, za aplika\u010dn\u00edm firewallom a za n\u011bjak\u00fdm balancerem. Do cesty je tak nutn\u00e9 postavit t\u0159i hardwarov\u00e9 s\u00ed\u0165ov\u00e9 prvky. Ve standardn\u00edm sv\u011bt\u011b se nastavuj\u00ed p\u0159\u00edslu\u0161n\u00e9 s\u00ed\u0165ov\u00e9 prvky, a IP adresy tak, aby pakety mohly p\u0159es tyto t\u0159i prvky proch\u00e1zet. T\u00edm lze zak\u00e1zat, aby u\u017eivatel p\u0159es internet tyto t\u0159i prvky obe\u0161el a rovnou se dostal na
frontendov\u00fd server.<\/p>\n\n\n\n

ROZD\u00cdL MEZI LEGACY A SDx SV\u011aTEM<\/h2>\n\n\n\n

Nyn\u00ed se dost\u00e1v\u00e1me k tomu z\u00e1sadn\u00edmu, co legacy sv\u011bt odli\u0161uje od SDx<\/a>. V SD sv\u011bt\u011b jednodu\u0161e \u0159e\u010deno nepot\u0159ebujeme konfigurovat jednotliv\u00e9 prvky. Uka\u017eme si to na p\u0159\u00edkladu ostrov\u016f v oce\u00e1nu. Ka\u017ed\u00fd ostrov je \u010dast\u00ed aplikace. M\u00e1me ostrov frontend a ostrov database, nap\u0159\u00edklad z roku 2019. V sou\u010dasnosti se rozhodneme aplikaci aktualizovat a p\u0159ibude dal\u0161\u00ed ostrov – backend. I na n\u011bm je pot\u0159eba v\u0161e zabezpe\u010dit \u2013 firewall, loadbalancer atd. Mus\u00edme obrazn\u011b zru\u0161i\u0165 star\u00e9 plavebn\u00ed trasy a vybudovat nov\u00e9. Jak na to? Z jednoho m\u00edsta z orchestr\u00e1toru za\u0159\u00edd\u00edm, aby lodi\u010dka neplula cestou internet-frontend, n\u00e1sledn\u011b frontend-datab\u00e1ze. Ale trasu frontend-datab\u00e1ze zru\u0161\u00edm a p\u0159es orchestr\u00e1tor lodi\u010dce pov\u00edm, \u017ee do datab\u00e1ze nebude plout p\u0159\u00edmo, ale nejprve zam\u00ed\u0159\u00ed na ostrov backend. A z n\u011bj se vybuduje dal\u0161\u00ed trasa na datab\u00e1zi. V p\u0159\u00edpad\u011b velk\u00e9ho mno\u017estv\u00ed n\u00e1v\u0161t\u011bvn\u00edk\u016f n\u00e1m orchestr\u00e1tor dok\u00e1\u017ee m\u011bnit velikost lodi\u010dky, aby dok\u00e1zala p\u0159iv\u00e9st v\u0161echny n\u00e1vst\u011bvn\u00edky (dynamick\u00e9 p\u0159\u00edd\u00e1v\u00e1n\u00ed zdroj\u016f \u2013 server \u2013 kontejner\u016f). Mo\u017en\u00e1 se zd\u00e1, \u017ee je to jednoduch\u00fd process, ale pokud se dostaneme na \u00farove\u0148 re\u00e1ln\u00e9 konfigurace s\u00ed\u0165ov\u00fdch prvk\u016f tak je to velk\u00fd z\u00e1sah do \u017eivota dan\u00e9ho datacentra.<\/p>\n\n\n\n

Ve sv\u011bt\u011b SD si danou cestu budujeme softwarov\u011b. Jen orchestr\u00e1toru zad\u00e1me p\u0159\u00edkaz, \u017ee chceme cesty takto pozm\u011bnit a orchest\u00e1tor plo\u0161n\u011b provede rekonfiguraci po jednotliv\u00fdch prvc\u00edch. Administr\u00e1tor p\u0159itom v\u016fbec nemusel fyzicky do datacentra doch\u00e1zet, nic r\u016f\u010dn\u011b konfigurovat, prov\u00e1d\u011bt zm\u011bny v kabel\u00e1\u017ei, \u010di m\u011bnit VLAN nebo IP adresaci, sm\u011b\u0159ov\u00e1n\u00ed (routing) v s\u00edti atd. U SD se I na komunika\u010dn\u00ed trasy d\u00edv\u00e1me z pohledu aplikace. S t\u00edm souvis\u00ed ot\u00e1zka geografick\u00e9ho um\u00edst\u011bn\u00ed datov\u00fdch center.<\/p>\n\n\n\n

VZD\u00c1LEN\u00c1 DATOV\u00c1 CENTRA SPOLU KOMUNIKUJ\u00cd EFEKTIVN\u011aJI<\/h2>\n\n\n\n

Uve\u010fme si p\u0159\u00edklad – z\u00e1kazn\u00edk si vybuduje datacentrum a m\u00e1 ho na jednom m\u00edst\u011b. Pokud tam m\u00e1 kritick\u00e9 informace, m\u016f\u017ee p\u0159ij\u00edt povode\u0148 \u010di jin\u00e1 \u017eiveln\u00e1 pohroma a je probl\u00e9m. P\u0159ijde o sv\u00e9 jedin\u00e9 datacentrum a o sto procent v\u0161echny informace. V takov\u00e9m p\u0159\u00edpad\u011b z\u00e1kazn\u00edci provedou to, \u017ee si vybuduj\u00ed dv\u011b \u010di vice datacenter, kter\u00e1 jsou geograficky odd\u011blen\u00e1. Vzd\u00e1lenost zde nehraje roli. Je jedno, zda jsou od sebe 10 \u010di 50 kilometr\u016f.<\/p>\n\n\n\n

Uve\u010fme si p\u0159\u00edklad, v jednom datacentru n\u00e1m b\u011b\u017e\u00ed aplikace. Dojde k \u017eiveln\u00e9 pohrom\u011b a datacentrum \u201ezhasne\u201d. V takov\u00e9m p\u0159\u00edpad\u011b pot\u0159ebujeme v re\u00e1ln\u00e9m \u010dase prepnout na slu\u017ebu v druh\u00e9m datacentru. Nen\u00ed problem ji tam \u201ezapnout\u201d. Ot\u00e1zka je, co ud\u011blat s daty?<\/p>\n\n\n\n

U klasick\u00fdch datov\u00fdch center se mezi datab\u00e1zemi buduj\u00ed samostatn\u00e9 datov\u00e9 trasy. DB tak funguj\u00ed obrazn\u011b v jedn\u00e9 s\u00edti a mohou se synchron\u011b replikovat. V SD sv\u011bt\u011b toto um\u00edme zabezpe\u010dit bez toho, aby tam musel b\u00fdt fyzick\u00fd p\u0159epoj. Nepot\u0159ebujeme p\u0159\u00edm\u00e9 propojen\u00ed mezi dvojic\u00ed datov\u00fdch center. M\u016f\u017eeme vyu\u017e\u00edt jak\u00fdkoliv transport, kter\u00fd m\u00e1me k dispozici. M\u016f\u017ee to b\u00fdt internet, MPLS atd. Nad t\u00edm dok\u00e1\u017eeme datov\u00e1 centra propojit takov\u00fdm zp\u016fsobem, jako byla um\u00edst\u011bn\u00e1 v jedn\u00e9 s\u00edti. Pokud p\u016fjdeme od tohoto konceptu trochu dale, pro\u010d by to to druh\u00e9 datov\u00e9 centrum nemohlo b\u00fdt cloud? T\u00edm jsme cht\u011bli \u0159\u00edct, \u017ee softwarov\u011b definovan\u00e9 datov\u00e9 centrum a zp\u016fsob, jak\u00fdm se konfiguruje prost\u0159ednictv\u00edm orchestr\u00e1toru, dok\u00e1\u017ee zabezpe\u010dit i propojen\u00ed geograficky vzd\u00e1len\u00fdch datov\u00fdch center. A to v\u0161e jednodu\u0161e p\u0159es b\u011b\u017enou IP s\u00ed\u0165.<\/p>\n\n\n\n

JAK\u00c1 JE BODOUCNOST?<\/h2>\n\n\n\n

Vlastn\u00ed datov\u00e1 centra byla d\u0159\u00edve neefektivn\u00edmi monstry, kter\u00e1 vy\u017eadovala pr\u00e1ci \u0159ady odborn\u00edk\u016f. Byla nav\u00edc velmi n\u00e1kladn\u00e1, tak\u017ee si je mohli dovolit jen korporace, st\u00e1tn\u00ed instituce \u010di arm\u00e1da. To se postupem let m\u011bnilo. N\u00e1stup virtualizace server\u016f n\u011bkdy na p\u0159elomu tis\u00edcilet\u00ed byl p\u0159elomov\u00fd a datov\u00e1 centra si mohly dovolit i men\u0161\u00ed subjekty. V n\u00e1sleduj\u00edc\u00edch des\u00edtk\u00e1ch let nebude v\u00fdjimkou, aby jeden IT specialista obstar\u00e1val klidn\u011b tis\u00edce server\u016f najednou. Na to si ale budeme muset je\u0161t\u011b chv\u00edli po\u010dkat.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Softwarov\u011b definovan\u00e9 datov\u00e9 centrum<\/strong> (SD DC), tak\u00e9 n\u011bkdy naz\u00fdvan\u00e9 jako virtu\u00e1ln\u00ed datov\u00e9 centrum (VDC) je marketingov\u00fd pojem, kter\u00fd roz\u0161i\u0159uje virtualiza\u010dn\u00ed koncepty, jako je abstrakce, sdru\u017eov\u00e1n\u00ed a automatizace, na v\u0161echny zdroje a slu\u017eby datov\u00e9ho centra za \u00fa\u010delem dosa\u017een\u00ed IT jako slu\u017eby (ITaaS). V softwarov\u011b definovan\u00e9m datov\u00e9m centru jsou v\u0161echny prvky infrastruktury (s\u00edt\u011b, \u00falo\u017ei\u0161t\u011b, CPU a zabezpe\u010den\u00ed) virtualizov\u00e1ny a dod\u00e1v\u00e1ny jako slu\u017eba.<\/p>\n\n\n\n

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<\/div>\n","protected":false},"excerpt":{"rendered":"

Ve firm\u00e1ch i st\u00e1tn\u00edch instituc\u00edch se informa\u010dn\u00ed technologie pod\u00edlej\u00ed u\u017e t\u00e9m\u011b\u0159 na ve\u0161ker\u00fdch procesech. Slo\u017eitost komunika\u010dn\u00edch syst\u00e9m\u016f roste, infrastruktura se mus\u00ed m\u011bnit st\u00e1le rychleji, a p\u0159edev\u0161\u00edm p\u0159izp\u016fsobovat aktu\u00e1ln\u00edm pot\u0159eb\u00e1m. \u0158e\u0161en\u00edm jsou softwarov\u011b definovan\u00e1 datov\u00e1 centra (SD DC). Konkr\u00e9tn\u011b se dnes zam\u011b\u0159\u00edme na komunika\u010dn\u00ed toky v datov\u00fdch centrech. CO JE TO SDx A JAK DO TOHOTO […]<\/p>\n","protected":false},"author":322,"featured_media":40601,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[144],"tags":[312],"news_categories":[377],"class_list":["post-40567","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clanky-cs","tag-datova-centra","news_categories-datacentra"],"acf":[],"yoast_head":"\nBez softwarov\u011b definovan\u00fdch datov\u00fdch center se firmy neobejdou - Soitron<\/title>\n<meta name=\"description\" content=\"Slo\u017eitost komunika\u010dn\u00edch syst\u00e9m\u016f roste, infrastruktura se mus\u00ed m\u011bnit st\u00e1le rychleji, a p\u0159edev\u0161\u00edm p\u0159izp\u016fsobovat aktu\u00e1ln\u00edm pot\u0159eb\u00e1m.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bez softwarov\u011b definovan\u00fdch datov\u00fdch center se firmy neobejdou - 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