{"id":42968,"date":"2021-05-01T14:03:00","date_gmt":"2021-05-01T13:03:00","guid":{"rendered":"https:\/\/www.soitron.com\/?p=42968"},"modified":"2023-11-16T10:13:49","modified_gmt":"2023-11-16T09:13:49","slug":"bez-softverovo-definovanych-datovych-centier-sa-firmy-nezaobidu","status":"publish","type":"post","link":"https:\/\/new.soitron.com\/sk\/bez-softverovo-definovanych-datovych-centier-sa-firmy-nezaobidu\/","title":{"rendered":"Bez softv\u00e9rovo definovan\u00fdch d\u00e1tov\u00fdch centier sa firmy nezaob\u00eddu"},"content":{"rendered":"\n

Vo firm\u00e1ch i \u0161t\u00e1tnych in\u0161tit\u00faci\u00e1ch sa informa\u010dn\u00e9 technol\u00f3gie podie\u013eaj\u00fa u\u017e takmer na v\u0161etk\u00fdch procesoch. Zlo\u017eitos\u0165 komunika\u010dn\u00fdch syst\u00e9mov rastie, infra\u0161trukt\u00fara sa mus\u00ed meni\u0165 st\u00e1le r\u00fdchlej\u0161ie, a predov\u0161etk\u00fdm prisp\u00f4sobova\u0165 aktu\u00e1lnym potreb\u00e1m. Rie\u0161en\u00edm s\u00fa softv\u00e9rovo definovan\u00e9 d\u00e1tov\u00e9 centr\u00e1 (SD DC). Konkr\u00e9tne sa dnes zameriame na komunika\u010dn\u00e9 toky v d\u00e1tov\u00fdch centr\u00e1ch.<\/strong><\/p>\n\n\n\n

\u010cO JE SDx A AKO DO TOHOTO KONCEPTU ZAPAD\u00c1 SD DC<\/h2>\n\n\n\n

Pozrime sa najprv na princ\u00edp SDx<\/a>. Ak chceme nie\u010do v tradi\u010dn\u00fdch d\u00e1tov\u00fdch centr\u00e1ch konfigurova\u0165, mus\u00edme ka\u017ed\u00fd komunika\u010dn\u00fd prvok nastavova\u0165 samostatne, zariadenie po zariaden\u00ed tak, aby sme dosiahli po\u017eadovan\u00e9 funkcionality celku. U SDx v\u0161etko vykon\u00e1vame z jedn\u00e9ho centr\u00e1lneho bodu – orchestr\u00e1tora. Do neho zad\u00e1me pravidl\u00e1, ktor\u00e9 m\u00e1 dan\u00e1 sie\u0165 sp\u013a\u0148a\u0165. A centr\u00e1lne riaden\u00fd orchestr\u00e1tor jednotliv\u00e9 prvky nakonfiguruje.<\/p>\n\n\n\n

Takto m\u00f4\u017eeme pristupova\u0165 napr\u00edklad k routingu a cez SD WAN<\/a> orchestr\u00e1tor konfigurova\u0165, spravova\u0165 a optimalizova\u0165 prenosov\u00e9 trasy i medzi kontinentami. Alebo m\u00f4\u017eeme SDA<\/a> orchestr\u00e1tor vyu\u017ei\u0165 na optimaliz\u00e1ciu a nastavovanie u\u017e\u00edvate\u013esk\u00fdch pr\u00edstupov, v LAN sie\u0165ach, pokojne aj vo viac geografick\u00fdch lokalit\u00e1ch.<\/p>\n\n\n\n

V pr\u00edpade d\u00e1tov\u00fdch centier n\u00e1m orchest\u00e1tor umo\u017en\u00ed automatiza\u010dn\u00fa konfigur\u00e1ciu jednotliv\u00fdch komunika\u010dn\u00fdch prvkov v prostred\u00ed, ktor\u00e9 m\u00f4\u017ee zah\u0155\u0148a\u0165 jednu, ale i viac lokal\u00edt (distribu\u010dn\u00fd DC). Pr\u00edpadne \u010das\u0165 d\u00e1tov\u00e9ho centra m\u00f4\u017ee by\u0165 v cloude\/cloudoch r\u00f4znych poskytovate\u013eov.<\/p>\n\n\n\n

U SDx je tie\u017e podstatn\u00e9, \u017ee m\u00e1me oddelen\u00fa trasu pre konfigur\u00e1ciu a pre d\u00e1ta. V star\u0161om legacy svete toto neexistovalo. Jednoducho povedan\u00e9, v SDx svete s\u00fa prv\u00fdkr\u00e1t konfigura\u010dn\u00e9 vrstvy (control plane) konfigura\u010dn\u00e9 trasy oddelen\u00e9 od t\u00fdch d\u00e1tov\u00fdch (d\u00e1ta plane) prenosov\u00fdch. \u010eal\u0161ia podstatn\u00e1 vec je, \u017ee sa to v\u0161etko deje z jedn\u00e9ho miesta. T\u00fdm p\u00e1dom je n\u00e1m jedno, ko\u013eko zariaden\u00ed v danej sieti m\u00e1me – \u010di p\u00e4\u0165 alebo p\u00e4\u0165desiat.<\/p>\n\n\n\n

\u00davod do legacy DC sveta<\/h2>\n\n\n\n

Predstavte si, \u017ee budujeme d\u00e1tov\u00e9 centrum a chceme postavi\u0165 jednoduch\u00fa webov\u00fa aplik\u00e1ciu, ktor\u00e1 m\u00e1 nejak\u00e9 logick\u00e9 vrstvy. Prv\u00e1 vrstva aplik\u00e1cie bude frontend, ku ktor\u00e9mu sa prip\u00e1jaj\u00fa \u013eudia z internetu. Samotn\u00e9 spracov\u00e1vanie zabezpe\u010duje vo v\u00e4\u010d\u0161ine pr\u00edpadov druh\u00e1 vrstva – backend. T\u00e1 spracov\u00e1va po\u017eiadavky z frontendu a vyu\u017e\u00edva vstupy z datab\u00e1zovej vrstvy. Takto si m\u00f4\u017eeme re\u00e1lne nejak\u00fa aplik\u00e1ciu predstavi\u0165 – je zlo\u017een\u00e1 z frontendu, backendu a datab\u00e1zy.<\/p>\n\n\n\n

Na ka\u017ed\u00fa z t\u00fdchto vrstiev s\u00fa kladen\u00e9 trochu in\u00e9 po\u017eiadavky. Pri datab\u00e1ze s\u00fa vy\u017eadovan\u00e9 in\u00e9 n\u00e1roky z oblasti zabezpe\u010denia, preto\u017ee do nej maj\u00fa pr\u00edstup len d\u00f4veryhodn\u00e9 syst\u00e9my. Naopak frontend je otvoren\u00fd do internetu. Tam mus\u00edme bezpe\u010dnostn\u00fd pr\u00edstup rie\u0161i\u0165 \u00faplne inak. Aby sme v tradi\u010dnom datacentre ochr\u00e1nili obsah – d\u00e1ta, potrebujeme zabezpe\u010di\u0165, aby komunik\u00e1cia, ktor\u00e1 na frontend prich\u00e1dza, bola za sie\u0165ov\u00fdm a aplika\u010dn\u00fdm firewallom, a za nejak\u00fdm balancerom. M\u00e1me tak tri hardv\u00e9rov\u00e9 \u200b\u200bsie\u0165ov\u00e9 prvky, ktor\u00e9 mus\u00edme postavi\u0165 do cesty. V \u0161tandardnom svete potrebujeme u\u017e dopredu pozna\u0165 ako nastavi\u0165 pr\u00edslu\u0161n\u00e9 VLAN, adres\u00e1ciu IP adries, aby packet mohol cez tieto tri prvky prech\u00e1dza\u0165. T\u00fdm dok\u00e1\u017eeme zak\u00e1za\u0165, aby klient z internetu tieto tri prvky obi\u0161iel a rovno sa dostal na frontendov\u00fd server. M\u00f4\u017ee to by\u0165 toti\u017e potencion\u00e1lny \u00fato\u010dn\u00edk, ktor\u00fd na frontendovom serveri urob\u00ed ve\u013ek\u00fa \u0161kodu.<\/p>\n\n\n\n

Rozdiel medzi legacy a SDx svetom<\/h2>\n\n\n\n

Teraz sa dost\u00e1vame k tomu podstatn\u00e9mu, \u010do legacy svet odli\u0161uje od SDx<\/a>. V SD svete, jednoducho povedan\u00e9, nepotrebujeme konfigurova\u0165 jednotliv\u00e9 prvky. Uk\u00e1\u017eme si to na pr\u00edklade ostrovov v oce\u00e1ne. Ka\u017ed\u00fd ostrov je s\u00fa\u010das\u0165ou aplik\u00e1cie. M\u00e1me ostrov frontend a ostrov database, napr\u00edklad z roku 2019. V s\u00fa\u010dasnosti sa rozhodneme aplik\u00e1ciu aktualizova\u0165 a pribudne \u010fal\u0161\u00ed ostrov – backend. Aj na \u0148om je potreba v\u0161etko zabezpe\u010di\u0165 – firewall, loadbalancer at\u010f. Obrazne povedan\u00e9 mus\u00edme zru\u0161i\u0165 star\u00e9 plavebn\u00e9 trasy a vybudova\u0165 nov\u00e9. Ako na to? Z jedn\u00e9ho miesta z orchestr\u00e1tora nastav\u00edm, aby sa lodi\u010dka neplavila cestou internet-frontend, n\u00e1sledne frontend-datab\u00e1zy. Ale trasu frontend-datab\u00e1zy zru\u0161\u00edm a cez orchestr\u00e1tor lodi\u010dke poviem, \u017ee do datab\u00e1zy nebude pl\u00e1va\u0165 priamo, ale najprv zamieri na ostrov backend. A z neho sa vybuduje \u010fal\u0161ie trasa na datab\u00e1zu. V pr\u00edpade ve\u013ek\u00e9ho mno\u017estva n\u00e1v\u0161tevn\u00edkov n\u00e1m orchestr\u00e1tor dok\u00e1\u017ee meni\u0165 ve\u013ekos\u0165 lodi\u010dky, aby dok\u00e1zala privies\u0165 v\u0161etk\u00fdch n\u00e1v\u0161tevn\u00edkov (dynamick\u00e9 prid\u00e1vanie zdrojov – server – kontajnerov). Mo\u017eno sa zd\u00e1, \u017ee je to jednoduch\u00fd proces, ale ak sa dostaneme na \u00farove\u0148 re\u00e1lne konfigur\u00e1cie sie\u0165ov\u00fdch prvkov, tak je to ve\u013ek\u00fd z\u00e1sah do \u017eivota dan\u00e9ho datacentra.<\/p>\n\n\n\n

Vo svete SD si dan\u00fa cestu budujeme softv\u00e9rovo. Len orchestr\u00e1toru zad\u00e1me pr\u00edkaz, \u017ee chceme cesty takto pozmeni\u0165 a orchest\u00e1tor plo\u0161ne vykon\u00e1 rekonfigur\u00e1ciu po jednotliv\u00fdch prvkoch. Administr\u00e1tor pritom v\u00f4bec nemusel fyzicky do datacentra pr\u00eds\u0165, ni\u010d ru\u010dne konfigurova\u0165, vykon\u00e1va\u0165 zmeny v kabel\u00e1\u017ei, \u010di meni\u0165 VLAN alebo IP adresovanie, smerovanie (routing) v sieti at\u010f. Pri SD sa aj na komunika\u010dn\u00e9 trasy pozer\u00e1me z poh\u013eadu aplik\u00e1cie. S t\u00fdm s\u00favis\u00ed ot\u00e1zka geografick\u00e9ho umiestnenia d\u00e1tov\u00fdch centier.<\/p>\n\n\n\n

Vzdialen\u00e9 d\u00e1tov\u00e9 centr\u00e1 spolu komunikuj\u00fa efekt\u00edvnej\u0161ie<\/h2>\n\n\n\n

Uve\u010fme si pr\u00edklad – z\u00e1kazn\u00edk si vybuduje datacentrum a m\u00e1 ho na jednom mieste. Ak tam m\u00e1 kritick\u00e9 inform\u00e1cie, m\u00f4\u017ee pr\u00eds\u0165 povode\u0148 \u010di in\u00e1 \u017eiveln\u00e1 pohroma a vznikne probl\u00e9m. Pr\u00edde o svoje jedin\u00e9 datacentrum a v\u0161etky inform\u00e1cie. V takom pr\u00edpade rad\u0161ej z\u00e1kazn\u00edci vykonaj\u00fa to, \u017ee si vybuduj\u00fa dve \u010di viac datacentier, ktor\u00e9 s\u00fa geograficky oddelen\u00e9. Vzdialenos\u0165 tu nehr\u00e1 rolu. Je jedno, \u010di s\u00fa od seba 10 \u010di 50 kilometrov.<\/p>\n\n\n\n

Uve\u010fme si pr\u00edklad, v jednom datacentre n\u00e1m be\u017e\u00ed aplik\u00e1cia. D\u00f4jde k \u017eivelnej pohrome a datacentrum \u201ezhasne”. V takomto pr\u00edpade potrebujeme v re\u00e1lnom \u010dase prepn\u00fa\u0165 na slu\u017ebu v druhom datacentre. \u201eZapn\u00fa\u0165” ju nie je tak\u00fd probl\u00e9m. Ot\u00e1zka je, \u010do urobi\u0165 s d\u00e1tami? Pri klasick\u00fdch d\u00e1tov\u00fdch centr\u00e1ch sa medzi datab\u00e1zami buduj\u00fa samostatn\u00e9 d\u00e1tov\u00e9 trasy. DB tak funguj\u00fa obrazne v jednej sieti a m\u00f4\u017eu sa synchr\u00f3nne replikova\u0165. V SD svete toto vieme zabezpe\u010di\u0165 bez toho, aby tam musel by\u0165 fyzick\u00fd prepoj. Nepotrebujeme priame prepojenie medzi dvojicou d\u00e1tov\u00fdch centier. M\u00f4\u017eeme vyu\u017ei\u0165 ak\u00fdko\u013evek transport, ktor\u00fd m\u00e1me k dispoz\u00edcii. M\u00f4\u017ee to by\u0165 internet, MPLS at\u010f. Nad t\u00fdm dok\u00e1\u017eeme d\u00e1tov\u00e9 centr\u00e1 prepoji\u0165 tak\u00fdm sp\u00f4sobom, ako boli umiestnen\u00e9 v jednej sieti. Ak p\u00f4jdeme od tohto konceptu trochu \u010falej, pre\u010do by to to druh\u00e9 d\u00e1tov\u00e9 centrum nemohlo by\u0165 cloud? T\u00fdm sme chceli poveda\u0165, \u017ee softv\u00e9rovo definovan\u00e9 d\u00e1tov\u00e9 centrum a sp\u00f4sob, ak\u00fdm sa konfiguruje prostredn\u00edctvom orchestr\u00e1tora, dok\u00e1\u017ee zabezpe\u010di\u0165 aj prepojenie geograficky vzdialen\u00fdch d\u00e1tov\u00fdch centier. A to v\u0161etko jednoducho cez be\u017en\u00fa IP sie\u0165.<\/p>\n\n\n\n

Ak\u00e1 je bud\u00facnos\u0165?<\/h2>\n\n\n\n

Vlastn\u00e9 d\u00e1tov\u00e9 centr\u00e1 boli predt\u00fdm neefekt\u00edvnymi mon\u0161trami, ktor\u00e1 vy\u017eadovali pr\u00e1cu mno\u017estva odborn\u00edkov. Boli navy\u0161e ve\u013emi n\u00e1kladn\u00e9, tak\u017ee si ich mohli dovoli\u0165 len korpor\u00e1cie, \u0161t\u00e1tne in\u0161tit\u00facie \u010di arm\u00e1da. To sa postupom rokov menilo. N\u00e1stup virtualiz\u00e1cie serverov niekedy na prelome tis\u00edcro\u010dia bol z\u00e1sadn\u00fd a d\u00e1tov\u00e9 centr\u00e1 si mohli dovoli\u0165 aj men\u0161ie subjekty. V nasleduj\u00facich desiatkach rokov nebude v\u00fdnimkou, aby jeden IT \u0161pecialista spravoval pokojne tis\u00edce serverov naraz. Na to si v\u0161ak budeme musie\u0165 e\u0161te chv\u00ed\u013eu po\u010dka\u0165.<\/p>\n\n\n\n

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

Softv\u00e9rovo definovan\u00e9 d\u00e1tov\u00e9 centrum<\/strong> (SD DC), tie\u017e niekedy naz\u00fdvan\u00e9 ako virtu\u00e1lne d\u00e1tov\u00e9 centrum (VDC) je marketingov\u00fd pojem, ktor\u00fd roz\u0161iruje virtualiza\u010dn\u00e9 koncepty, ako je abstrakcia, zdru\u017eovania a automatiz\u00e1cia, na v\u0161etky zdroje a slu\u017eby d\u00e1tov\u00e9ho centra za \u00fa\u010delom dosiahnutia IT ako slu\u017eby (ITaaS) . V softv\u00e9rovo definovanom d\u00e1tovom centre s\u00fa v\u0161etky prvky infra\u0161trukt\u00fary (siete, \u00falo\u017eisko, CPU a zabezpe\u010denia) virtualizovan\u00e9 a dod\u00e1van\u00e9 ako slu\u017eba.<\/p>\n\n\n\n

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

Vo firm\u00e1ch i \u0161t\u00e1tnych in\u0161tit\u00faci\u00e1ch sa informa\u010dn\u00e9 technol\u00f3gie podie\u013eaj\u00fa u\u017e takmer na v\u0161etk\u00fdch procesoch. Zlo\u017eitos\u0165 komunika\u010dn\u00fdch syst\u00e9mov rastie, infra\u0161trukt\u00fara sa mus\u00ed meni\u0165 st\u00e1le r\u00fdchlej\u0161ie, a predov\u0161etk\u00fdm prisp\u00f4sobova\u0165 aktu\u00e1lnym potreb\u00e1m. Rie\u0161en\u00edm s\u00fa softv\u00e9rovo definovan\u00e9 d\u00e1tov\u00e9 centr\u00e1 (SD DC). Konkr\u00e9tne sa dnes zameriame na komunika\u010dn\u00e9 toky v d\u00e1tov\u00fdch centr\u00e1ch. \u010cO JE SDx A AKO DO TOHOTO KONCEPTU […]<\/p>\n","protected":false},"author":322,"featured_media":40606,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[33],"tags":[308],"news_categories":[376],"class_list":["post-42968","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clanky","tag-datove-centra","news_categories-datove-centra"],"acf":[],"yoast_head":"\nBez softv\u00e9rovo definovan\u00fdch d\u00e1tov\u00fdch centier sa firmy nezaob\u00eddu - Soitron<\/title>\n<meta name=\"description\" content=\"Zlo\u017eitos\u0165 komunika\u010dn\u00fdch syst\u00e9mov rastie, infra\u0161trukt\u00fara sa mus\u00ed meni\u0165 st\u00e1le r\u00fdchlej\u0161ie. 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