{"id":33050,"date":"2019-10-31T21:50:27","date_gmt":"2019-10-31T18:50:27","guid":{"rendered":"https:\/\/prohoster.info\/blog\/application-centric-infrastructure-arhitektura-seti-budushhego-ot-rassuzhdenij-k-delu\/"},"modified":"2019-10-31T21:50:27","modified_gmt":"2019-10-31T18:50:27","slug":"application-centric-infrastructure-arhitektura-seti-budushhego-ot-rassuzhdenij-k-delu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/application-centric-infrastructure-arhitektura-seti-budushhego-ot-rassuzhdenij-k-delu","title":{"rendered":"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Viimastel aastatel on Cisco aktiivselt edendanud uut andmesidev\u00f5rgu arhitektuuri andmekeskustes \u2014 <b>Rakendusele keskenduv infrastruktuur (ehk ACI)<\/b>. M\u00f5ned on sellega juba tutvunud. Teised on isegi saanud selle oma ettev\u00f5tetesse rakendada, sealhulgas Venemaal. Siiski on ACI enamusele IT-spetsialistidest ja IT-juhtidest veel kas arusaamatu l\u00fchend v\u00f5i lihtsalt jutt tulevikust. <br \/>\nSelles artiklis proovime seda tulevikku l\u00e4hemale tuua. Selle eesm\u00e4rgi nimel r\u00e4\u00e4gime ACI p\u00f5hikomponentidest ning illustreerime, kuidas seda praktikas rakendada. Lisaks korraldame varsti ACI toimimise n\u00e4idisdemo, kuhu saab registreeruda iga huviline IT-spetsialist.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nUue andmesidev\u00f5rgu arhitektuuri kohta saab rohkem teada 2019. aasta mais Peterburis. K\u00f5ik \u00fcksikasjad \u2013 aadressil <noindex><a rel=\"nofollow\" href=\"https:\/\/cisco.promo\/aci\/\">lingi kaudu<\/a><\/noindex>. Registreerige end!<\/p>\n<p><b>Eelalugu<\/b><br \/>\nTraditsiooniline ja k\u00f5ige populaarsem v\u00f5rgustruktuuri mudeleid on kolme taseme hierarhiline mudel: tuum &gt; jaotamine (agregatsioon) &gt; juurdep\u00e4\u00e4s. Aastate jooksul on see mudel olnud standard, mille j\u00e4rgi tootjad on v\u00e4lja andnud erinevaid v\u00f5rgu seadmeid, mis vastavad sellele funktsionaalsusele. <br \/>\nKunagi, kui infotehnoloogia oli omamoodi h\u00e4davajalik (ja, peab \u00fctlema, mitte alati soovitav) lisand \u00e4ri juurde, oli see mudel mugav, \u00fcsna staatiline ja usaldusv\u00e4\u00e4rne. Kuid n\u00fc\u00fcd, kui IT on muutunud \u00fcheks \u00e4riarengu mootoriks ja paljuski isegi \u00e4ri enda osaks, on selle mudeli staatilisus hakanud tekitama suuri probleeme.<\/p>\n<p>Kaasaegne \u00e4ri genereerib suurt hulka erinevaid keerulisi n\u00f5udmisi v\u00f5rguinfrastruktuurile. N\u00f5udmiste t\u00e4itmise ajad s\u00f5ltuvad otseselt \u00e4ri edust. Viivitamine sellistes tingimustes on vastuv\u00f5etamatu ning klassikaline v\u00f5rgumudel ei suuda tihti \u00f5igel ajal rahuldada k\u00f5iki \u00e4ri vajadusi. <\/p>\n<p>N\u00e4iteks toob uue keerulise \u00e4ritarkvara ilmumine kaasa suurte administraatorite vajaduse teha palju sarnaseid rutiinseid operatsioone paljudes erinevates v\u00f5rgu seadmetes erinevatel tasanditel. Lisaks sellele, et see v\u00f5tab palju aega, suurendab see ka riski teha viga, mis v\u00f5ib p\u00f5hjustada t\u00f5siseid katkestusi IT-teenustes ja seega ka rahalisikahjusid.<\/p>\n<p>Probleemi juureks ei ole isegi mitte t\u00e4htajad v\u00f5i n\u00f5uete keerukus. Asi on selles, et neid n\u00f5udeid tuleb 't\u00f5lkida' \u00e4ritarkvarast v\u00f5rgu infrastruktuuri keelde. Nagu teada, t\u00e4hendab iga t\u00f5lge alati osa t\u00e4henduse kaotust. Kui rakenduse omanik r\u00e4\u00e4gib oma rakenduse t\u00f6\u00f6logikast, m\u00f5istab v\u00f5rguadministraator hulka VLAN-e, Access List-e, mida tuleb toeks hoida, ajakohastada ja dokumenteerida.<\/p>\n<p>Kogutud kogemus ja pidev suhtlemine klientidega on v\u00f5imaldanud Cisco-l projekteerida ja rakendada uusi andmekeskuse andmeedastusv\u00f5rgu loomise p\u00f5him\u00f5tteid, mis vastavad kaasaegsetele suundumustele ja p\u00f5hinevad peamiselt \u00e4ri rakenduste loogikal. Seet\u00f5ttu ka nimi \u2014 Rakendusele Keskenduv Infrastruktur.<\/p>\n<p><b>ACI arhitektuur.<\/b><br \/>\nACI arhitektuuri on k\u00f5ige \u00f5igem vaadelda mitte f\u00fc\u00fcsilisest k\u00fcljest, vaid loogilisest. See p\u00f5hineb automatiseeritud poliitikate mudelil, mille objekte saab k\u00f5rgel tasemel jagada j\u00e4rgmistesse komponentidesse:<\/p>\n<ol>\n<li> Nexus l\u00fclitite p\u00f5hine v\u00f5rk.<\/li>\n<li> APIC-kontrollerite klaster;<\/li>\n<li> Rakenduse profiilid;<\/li>\n<\/ol>\n<p>\n<img decoding=\"async\" alt=\"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni\" src=\"\/wp-content\/uploads\/2019\/05\/20e9a71dd5bb720b30095676326142d5.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nVaatame iga taset l\u00e4hemalt \u2013 liikudes kergemalt keerulisemaks.<\/p>\n<p><b>Nexus l\u00fclitite p\u00f5hine v\u00f5rk<\/b><br \/>\nACI-fabriku v\u00f5rk sarnaneb traditsioonilise hierarhilise mudeliga, kuid seda on oluliselt lihtsam \u00fcles ehitada. V\u00f5rgu korraldamiseks kasutatakse Leaf-Spine mudelit, mis on muutunud uue p\u00f5lvkonna v\u00f5rkude rakendamiseks \u00fcldiselt aktsepteeritud l\u00e4henemisviisiks. See mudel koosneb kahest tasemest: Spine ja Leaf, vastavalt.<br \/>\n <img decoding=\"async\" alt=\"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni\" src=\"\/wp-content\/uploads\/2019\/05\/0e232d48c7fe664a801d45b6dbb474a7.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nSpine-tasandi vastutab ainult j\u00f5udluse eest. Spine-l\u00fclitite koguj\u00f5udlus on v\u00f5rgu kogu j\u00f5udlus, mist\u00f5ttu tuleb sellel tasemel kasutada 40G v\u00f5i k\u00f5rgemat kiirete l\u00fclititega. <br \/>\nSpine-l\u00fclitid on \u00fchendatud k\u00f5igi j\u00e4rgmise taseme l\u00fclititega: Leaf-l\u00fclititega, millega on \u00fchendatud l\u00f5pp-teenindajad. Leaf-l\u00fclitite peamine roll on portide mahutavus. <\/p>\n<p>Seega on skaleerimise k\u00fcsimused lihtsad: kui me peame suurendama tehase l\u00e4bilaskev\u00f5imet, lisame Spine-l\u00fclitid, ja kui me peame suurendama portide mahutavust \u2013 Leaf-l\u00fclitid.<br \/>\nM\u00f5lemal tasemel kasutatakse Cisco Nexus 9000 seeria l\u00fcliteid, mis on Cisco p\u00f5hivahend andmekeskuse v\u00f5rkude ehitamiseks s\u00f5ltumata arhitektuurist. Spine-taseme jaoks kasutatakse Nexus 9300 v\u00f5i Nexus 9500 l\u00fcliteid, Leaf-taseme jaoks ainult Nexus 9300. <br \/>\nNexus-l\u00fclitite mudelid, mida kasutatakse ACI tehases, on toodud alloleval joonisel.<br \/>\n <img decoding=\"async\" alt=\"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni\" src=\"\/wp-content\/uploads\/2019\/05\/0c166b8f16dafcd2f297102306cdb6ba.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>APIC (Application Policy Infrastructure Controller) klaster. <\/b><br \/>\nAPIC-kontrollerid on spetsialiseeritud f\u00fc\u00fcsilised serverid, samas lubatakse v\u00e4iksemate rakenduste puhul kasutada \u00fchte f\u00fc\u00fcsilist APIC-kontrollerit ja kahte virtuaalset. <br \/>\nAPIC-kontrollerid t\u00e4idavad haldus- ja j\u00e4lgimisfunktsioone. Oluline on, et kontrollerid ei osale kunagi andmete edastamises, seega, isegi kui k\u00f5ik klastrite kontrollerid eba\u00f5nnestuvad, ei m\u00f5juta see v\u00f5rgu stabiilsust absoluutselt. Samuti tuleb m\u00e4rkida, et APIC-ide abil haldab administraator k\u00f5iki f\u00fc\u00fcsilisi ja loogilisi ressursse tehases, ja et muudatuste tegemiseks ei ole vaja enam \u00fchendust v\u00f5tta \u00fcksikute seadmetega, kuna ACI-s kasutatakse \u00fchte halduspunkte.<br \/>\n <img decoding=\"async\" alt=\"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni\" src=\"\/wp-content\/uploads\/2019\/05\/212db035b1471afad49cbb77ecfe039a.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>N\u00fc\u00fcd liigume edasi \u00fche ACI peamise komponendi juurde \u2013 rakenduste profiilide juurde.<\/b><br \/>\n<b>Rakenduse profiil (Application Network Profile)<\/b> \u2013 see on ACI loogiline alus. Just rakendusprofiilid m\u00e4\u00e4ravad poliitikad, kuidas k\u00f5ikide v\u00f5rgu segmentide vahel suhelda, ja kirjeldavad otse v\u00f5rgu segmente. ANP v\u00f5imaldab abstraktiseerida f\u00fc\u00fcsiliselt tasemelt ja esindab, kuidas korraldada erinevate v\u00f5rgu segmente interaktsiooni rakenduse vaatenurgast. <\/p>\n<p>Rakendusprofiil koosneb \u00fchendusgruppidest (End-point groups \u2013 EPG). \u00dchendusgrupp on loogiline grupp hoste (virtuaalmasinad, f\u00fc\u00fcsilised serverid, konteinerid jne), mis asuvad \u00fches turvasegmentis (mitte v\u00f5rgus, vaid just turvalisuse m\u00f5ttes). L\u00f5puhostid, mis kuuluvad teatud EPG-sse, v\u00f5ivad olla m\u00e4\u00e4ratletud paljude kriteeriumide alusel. Tavalised on j\u00e4rgmised: <\/p>\n<ul>\n<li>F\u00fc\u00fcsiline port<\/li>\n<li>Loogiline port (port-grupp virtuaalses l\u00fclituses)<\/li>\n<li>VLAN ID v\u00f5i VXLAN<\/li>\n<li>IP-aadress v\u00f5i IP-alamv\u00f5rk<\/li>\n<li>Serveri atribuudid (nimi, asukoht, operatsioonis\u00fcsteemi versioon jne)<\/li>\n<\/ul>\n<p>\nErinevate EPG-de koost\u00f6\u00f6ks on ette n\u00e4htud objekt, mida nimetatakse lepinguteks. Leping m\u00e4\u00e4ratleb suhted erinevate EPG-de vahel. Teisis\u00f5nu, leping m\u00e4\u00e4rab, millist teenust \u00fcks EPG osutab teisele EPG-le. N\u00e4iteks loome lepingu, mis lubab liikluse edastamist HTTPS-protokolli kaudu. Seej\u00e4rel \u00fchendame selle lepingu, n\u00e4iteks, EPG Web (veebiserverite r\u00fchm) ja EPG App (rakenduste serverite r\u00fchm), mist\u00f5ttu saavad need kaks l\u00f5ppgruppi vahetada liiklust HTTPS-protokolli kaudu.<\/p>\n<p>Alloleval joonisel on toodud n\u00e4ide erinevate EPG-de \u00fchenduse seadistamisest lepingute kaudu \u00fche ANP raames.<br \/>\n <img decoding=\"async\" alt=\"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni\" src=\"\/wp-content\/uploads\/2019\/05\/b92201fbfe05298bb1511dfd5a3ebd7f.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nACI-tehases v\u00f5ib olla piiramatu hulk rakenduste profiile. Samuti ei ole lepingud seotud konkreetse rakenduste profiiliga, neid saab (ja tuleb) kasutada EPG-de \u00fchendamiseks erinevates ANP-des.<\/p>\n<p>Iga rakendus, mis vajab v\u00f5rku, on esindatud oma profiiliga. N\u00e4iteks on \u00fclaltoodud skeemil kujutatud kolmekihilise rakenduse standardne arhitektuur, mis koosneb N arvust v\u00e4ljuvatest veebiserveritest (Web), rakenduste serveritest (App) ja andmebaasiserveritest (DB), samuti on kirjeldatud nende vahelise suhtluse reegleid. Traditsioonilises v\u00f5rguinfrastruktuuris oleks see rida reegleid, mis on kirja pandud erinevates seadmetes. ACI arhitektuuris kirjeldame neid reegleid \u00fches rakenduse profiilis. ACI rakenduse profiili kaudu on v\u00f5imalik m\u00e4rkimisv\u00e4\u00e4rselt lihtsustada paljude seadistuste loomist erinevates seadmetes, koondades need k\u00f5ik \u00fchte profiili. <br \/>\nAlloleval joonisel on toodud elukohasem pelzisaade. Microsoft Exchange'i rakenduse profiil, mis koosneb mitmest EPG-st ja lepingust.<br \/>\n <img decoding=\"async\" alt=\"Rakendustele keskenduv infrastruktuur. Tuleviku v\u00f5rgu arhitektuur \u2014 arutlustest tegudeni\" src=\"\/wp-content\/uploads\/2019\/05\/46d4e8e088a815233c65c58da7c8624e.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Keskne juhtimine, automatiseerimine ja j\u00e4lgimine on ACI \u00fcks peamisi eeliseid. ACI tehas vabastab administraatorid igap\u00e4evastest \u00fclesannetest, mis on seotud suure hulga reeglite koostamisega erinevates l\u00fclitites, marsruutijates ja tulem\u00fc\u00fcrides (samal ajal on klassikaline k\u00e4sitsi seadistamise meetod lubatud ja seda saab kasutada). Rakenduste profiilide ja teiste ACI objektide seaded rakendatakse automaatselt kogu ACI tehases. Isegi kui serverid f\u00fc\u00fcsiliselt l\u00fclitatakse l\u00fclitite teistesse portidesse, ei ole vajalik vanade l\u00fclitite seadeid uutele dubleerida ja mittefunktsionaalseid reegleid kustutada. Vastavalt hosti kuuluvuse kriteeriumidele EPG-s, tehas rakendab neid seadeid automaatselt ja puhastab automaatselt kasutamata reeglid. <br \/>\nACI integreeritud turvapoliitikad on rakendatud valge nimekirja p\u00f5him\u00f5tte j\u00e4rgi, mis t\u00e4hendab, et k\u00f5ik, mis ei ole selges\u00f5naliselt lubatud, on vaikimisi keelatud. Koos v\u00f5rguseadmete konfigureerimise automaatse ajakohastamisega (kasutamata reeglite ja lubade eemaldamine) suurendab see l\u00e4henemine oluliselt v\u00f5rgu koguturvalisust ning kitsendab potentsiaalse r\u00fcnnaku pinda.<\/p>\n<p>ACI v\u00f5imaldab korraldada v\u00f5rgu suhtlemist mitte ainult virtuaalsete masinate ja konteinerite, vaid ka f\u00fc\u00fcsiliste serverite, riistvarap\u00f5histe tulem\u00fc\u00fcride ja kolmandate osapoolte v\u00f5rguseadmete vahel, mis teeb ACI praegu unikaalse lahenduse. <br \/>\nCisco uus l\u00e4henemine andmesidev\u00f5rgu ehitusele rakenduste loogika alusel ei t\u00e4henda ainult automatiseerimist, turvalisust ja tsentraliseeritud haldust. See on ka kaasaegne horisontaalselt skaleeritav v\u00f5rk, mis vastab k\u00f5igile kaasaegse \u00e4ri n\u00f5udmistele.<br \/>\nApplication Centric Infrastructure'i rakendamine ACI p\u00f5hjal v\u00f5imaldab k\u00f5igil ettev\u00f5tte osakondadel suhtlemiseks \u00fchtset keelt. Halduse p\u00f5hialuseks on rakenduse t\u00f6\u00f6loogika, kus on m\u00e4\u00e4ratletud vajalikud reeglid ja seosed. Samuti j\u00e4rgivad rakenduse t\u00f6\u00f6loogikat rakenduse omanikud ja arendajad, infotehnoloogia teenus, raamatupidajad ning ettev\u00f5tte omanikud. <\/p>\n<p>Nii viib Cisco praktikas ellu uue p\u00f5lvkonna andmekeskuse v\u00f5rgu kontseptsiooni. Kas tahate ise veenduda? Tulge n\u00e4idisessioonile <b>Application Centric Infrastructure<\/b> Peterburis ja nautige tuleviku andmekeskuse v\u00f5rku juba t\u00e4na. <br \/>\nS\u00fcndmusele registreeruda on v\u00f5imalik <noindex><a rel=\"nofollow\" href=\"https:\/\/cisco.promo\/aci\/\">lingi kaudu<\/a><\/noindex>.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/cisco\/blog\/450650\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043b\u0435\u0442 Cisco \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u043f\u0440\u043e\u0434\u0432\u0438\u0433\u0430\u0435\u0442 \u043d\u043e\u0432\u0443\u044e \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0443 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0426\u041e\u0414 \u2014 Application Centric Infrastructure (\u0438\u043b\u0438 ACI). \u041d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0441 \u043d\u0435\u0439 \u0443\u0436\u0435 \u0437\u043d\u0430\u043a\u043e\u043c\u044b. \u0410 \u043a\u0442\u043e-\u0442\u043e \u0434\u0430\u0436\u0435 \u0443\u0441\u043f\u0435\u043b \u0432\u043d\u0435\u0434\u0440\u0438\u0442\u044c \u0435\u0451 \u043d\u0430 \u0441\u0432\u043e\u0438\u0445 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u044f\u0442\u0438\u044f\u0445, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0438 \u0432 \u0420\u043e\u0441\u0441\u0438\u0438. \u041e\u0434\u043d\u0430\u043a\u043e \u0434\u043b\u044f \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0430 \u0418\u0422-\u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u043e\u0432 \u0438 \u0418\u0422-\u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u0439 ACI \u043f\u043e\u043a\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043b\u0438\u0431\u043e \u043d\u0435\u043f\u043e\u043d\u044f\u0442\u043d\u043e\u0439 \u0430\u0431\u0431\u0440\u0435\u0432\u0438\u0430\u0442\u0443\u0440\u043e\u0439, \u043b\u0438\u0431\u043e \u0432\u0441\u0435\u0433\u043e \u043b\u0438\u0448\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":24807,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-33050","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" 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