{"id":53098,"date":"2019-11-23T00:00:00","date_gmt":"2019-11-22T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/operatsiya-migratsiya-kak-proishodit-pereezd-v-oblako-dataline"},"modified":"2020-02-18T14:00:57","modified_gmt":"2020-02-18T11:00:57","slug":"operatsiya-migratsiya-kak-proishodit-pereezd-v-oblako-dataline","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/administrirovanie\/operatsiya-migratsiya-kak-proishodit-pereezd-v-oblako-dataline","title":{"rendered":"Operacija \"Migracija\": kako se odvija preseljenje u oblak DataLine","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Prije otprilike 7 godina, prvi projekti su se jednostavno i lako selili u na\u0161 oblak. Slike virtualnih ma\u0161ina su se prenosile preko FTP servera ili su dono\u0161ene na tvrdim diskovima. Nakon toga, putem posebnog servera za uvoz, VM su se u\u010ditavali u oblak.<\/p>\n<p>Ako klijentu ne smeta isklju\u010diti virtualku na dan-dva (ili nema drugih opcija), mo\u017ee se to tako. No, ako downtime ne smije trajati du\u017ee od sat vremena, takav na\u010din nije primjeren. Danas \u0107u objasniti koji alati mogu pomo\u0107i pri migraciji u oblak s minimalnim vremenom zastoja i kako je sam proces migracije organiziran kod nas.<\/p>\n<p><img decoding=\"async\" alt=\"Operacija &quot;Migracija&quot;: kako se odvija preseljenje u oblak DataLine\" src=\"\/wp-content\/uploads\/2019\/11\/f17a23a615ef8808d4b3205411afa70b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Migracija pomo\u0107u Veeam Backup and Replication<\/h3>\n<p>\nVeeam Backup and Replication svi znaju kao alat za izradu backup-a i replikacija. Mi ga koristimo za migraciju izme\u0111u na\u0161ih lokacija i za prebacivanje klijenata s privatne virtualizacije u na\u0161 oblak. Virtualne ma\u0161ine klijenta se repliciraju na na\u0161 vCenter, nakon \u010dega in\u017eenjer dodaje iste u vCloud Director. <\/p>\n<p>Prva replikacija se izvodi na uklju\u010dnoj virtualnoj ma\u0161ini. U dogovoreno vrijeme, ma\u0161ina na strani klijenta se isklju\u010duje. Replikacija se pokre\u0107e jo\u0161 jednom kako bi se prenijele promjene koje su se dogodile od prve replikacije. Nakon toga, virtualna ma\u0161ina se pokre\u0107e ve\u0107 u na\u0161em oblaku. <\/p>\n<p><img decoding=\"async\" alt=\"Operacija &quot;Migracija&quot;: kako se odvija preseljenje u oblak DataLine\" src=\"\/wp-content\/uploads\/2019\/11\/f354392eb6c90f3a1eb6332caf57d421.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nObi\u010dno prolazi ne vi\u0161e od pola sata od isklju\u010divanja ma\u0161ine na infrastrukturi klijenta do uklju\u010divanja u na\u0161em oblaku, a \u010de\u0161\u0107e 15\u201320 minuta. <\/p>\n<p>Pri tome na lokaciji klijenta ostaje izvorna virtualna ma\u0161ina. Ako iznenada ne\u0161to krene po zlu, uvijek se mo\u017ee vratiti i uklju\u010diti je. Za klijenta je ta metoda povoljna jer ne zahtijeva od njega da ima Veeam.<\/p>\n<p><i>Slu\u010daj 1<br \/>\nKlijent je imao svoju virtualnu infrastrukturu na bazi VMware \u2013 40 VM-a s kapacitetom od 30 TB. Oprema na kojoj je klaster bio postavljen ve\u0107 je zastarjela, pa je klijent odlu\u010dio ne baviti se nabavkom nove i preseliti se u javni oblak. Zahtjev za vremenom zastoja kriti\u010dnih sistema bio je ne vi\u0161e od sata. Kao alat je izabran Veeam Replication. Dodatna prednost bila je to \u0161to je internet provajder klijenta bio prisutan u na\u0161em podatkovnom centru, \u0161to je omogu\u0107ilo stvaranje dobrog kanala. Migracija je trajala oko mjesec dana, a vrijeme zastoja prilikom prebacivanja iznosilo je do 30 minuta za jednu grupu virtualnih ma\u0161ina.<\/i><\/p>\n<h3>Migracija pomo\u0107u Veeam Cloud Connect<\/h3>\n<p>\nVeeam Cloud Connect \u2013 alat koji poma\u017ee u postavljanju replikacije virtualnih ma\u0161ina i pokretanju replikata u oblaku pru\u017eatelja usluga. Nakon a\u017euriranja u <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/436086\/\">2019<\/a><\/noindex> godini omogu\u0107ena je replikacija virtualnih ma\u0161ina direktno u vCloud Director. Jedini uvjet je da klijent mora imati postavljen svoj Veeam Backup i Replication ne ni\u017ei od verzije 9. U kratkim crtama (detaljna verzija <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/308984\/\">ovdje<\/a><\/noindex>), cijeli proces izgleda ovako.<\/p>\n<p>U vCloud Director se kreira organizacija s potrebnim resursima i mre\u017eama. U Veeam Cloud Connectu kreiramo ra\u010dun, klijent se povezuje s njim iz svog Veeam B&amp;R, bira pru\u017eatelja DataLine i organizaciju, zatim postavlja zadatke za replikaciju. Osim \u0161to \u0107e jednostavnost migracije biti u rasponu od 15 do 20 minuta, klijent ne ovisi o podr\u0161ci pru\u017eatelja i samostalno upravlja cijelim procesom: kreira zadatke za replikaciju, samu replikaciju, isklju\u010duje ma\u0161ine i pokre\u0107e njihov start na novoj lokaciji. <\/p>\n<p><img decoding=\"async\" alt=\"Operacija &quot;Migracija&quot;: kako se odvija preseljenje u oblak DataLine\" src=\"\/wp-content\/uploads\/2019\/11\/c12ad61c4359f21db23228ac0cad06e6.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<i>Slu\u010daj 2<br \/>\nInfrastruktura klijenta, s koje se planirala migracija, nalazila se u Bjelorusiji. Trebalo je prenijeti 90 VM-ova ukupnog volumena 27 TB, uz internet kanal od 100 mbit\/s. Kada bi se radila sigurnosna kopija i odmah je slala u na\u0161e oblak, za neke VM-ove bi to trajalo nekoliko dana. U tom razdoblju bi na VM-ovima nastala velika delta, \u0161to bi moglo negativno utjecati na performanse ma\u0161ina ili, jo\u0161 gore, ponestalo bi mjesta na datastoru. Postupili smo na sljede\u0107i na\u010din: prvo je klijent napravio lokalnu potpunu sigurnosnu kopiju i prenio je kopiju u na\u0161e oblak putem Veeam Cloud Connect. Zatim je napravio i prenio inkrement. Izvorna virtualna ma\u0161ina nastavila je raditi. Nakon isklju\u010divanja VM-a, klijent je napravio jo\u0161 jedan inkrement i tako\u0111er ga prenio u oblak. Na svojoj strani smo postavili virtualnu ma\u0161inu iz pune sigurnosne kopije, a zatim dodali dva inkrementa. Ova shema omogu\u0107ila je kona\u010dno minimiziranje zastoja na 2 sata prilikom prebacivanja na na\u0161u lokaciju. <\/i><\/p>\n<h3>Migracija pomo\u0107u VMware vCloud Availability<\/h3>\n<p>\nU o\u017eujku ove godine VMware je izbacio vCloud Availability 3.0, koji omogu\u0107ava migraciju virtualnih ma\u0161ina izme\u0111u razli\u010ditih oblaka (vCloud Director \u2013 vCloud Director) i s privatnih virtualizacijskih platformi klijenata u oblak (vCenter \u2013 vCloud Director). Glavna pogodnost je integracija s vCloud Director su\u010deljem. To znatno pojednostavljuje proces upravljanja replikacijom i minimizira vrijeme zastoja tijekom prebacivanja.<\/p>\n<p>Pomo\u0107u ovog alata migrirali smo jednog klijenta iz na\u0161eg moskovskog oblaka u na\u0161 oblak u Sankt Peterburgu. Trebalo je prenijeti 18 virtualnih ma\u0161ina ukupnog kapaciteta 14 TB. Za klijenta je stvorena organizacija u peterbur\u0161kom oblaku i organizirane potrebne mre\u017ee. Nakon toga, klijent je preko su\u010delja vCloud Director pre\u0161ao na postavke vCloud Availability, stvorio zadatke replikacije i u skladu s vlastitim rasporedom pre\u0161ao na peterbur\u0161ku lokaciju. Vrijeme zastoja tijekom prebacivanja iznosilo je 12 minuta.<\/p>\n<p><img decoding=\"async\" alt=\"Operacija &quot;Migracija&quot;: kako se odvija preseljenje u oblak DataLine\" src=\"\/wp-content\/uploads\/2019\/11\/005c71c288c86b5e3ff09044e7ae4429.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Shema migracije izme\u0111u oblaka DataLine u Peterburgu i Moskvi.<\/i><\/p>\n<p>U vCloud Availability postoji mehanizam za migraciju VMs s platforme klijenta u na\u0161 oblak. Za to se u klijentovom vCenter-u postavlja posebni appliance vCloud Availability. Nakon jednostavne konfiguracije uspostavlja se veza s oblakom i postavljaju se migracijski zadaci. Klijent tako\u0111er samostalno upravlja cijelim procesom, a vrijeme migracije se minimizira.<\/p>\n<p><img decoding=\"async\" alt=\"Operacija &quot;Migracija&quot;: kako se odvija preseljenje u oblak DataLine\" src=\"\/wp-content\/uploads\/2019\/11\/42230cf27dd8755359610002974b0a26.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Shema migracije virtualnih ma\u0161ina iz privatne instalacije u oblak.<\/i><\/p>\n<p>VMware vCloud Availability ima mnogo drugih scenarija kori\u0161tenja, uskoro \u0107emo ih predstaviti u posebnom \u010dlanku. <\/p>\n<h3>Priprema za migraciju <\/h3>\n<p>\nKako bismo odabrali alat i zapravo zapo\u010deli migraciju, potrebno je razjasniti sljede\u0107e aspekte:<\/p>\n<p><b>Odakle migriramo. <\/b>Ako migrirate s privatnog rje\u0161enja, imate potpunu slobodu u odabiru alata. Ako se selite od pru\u017eatelja usluga, to je malo slo\u017eenije. Vjerojatno ne\u0107ete mo\u0107i povezati infrastrukture dvaju pru\u017eatelja usluga i jednostavno premjestiti VM iz sigurnosnih razloga. Ponekad pru\u017eatelj s kojim se klijent \u017eeli isklju\u010diti po\u010dinje ote\u017eavati i odugovla\u010diti. Seljenje od pru\u017eatelja mo\u017ee se obaviti na tradicionalan na\u010din: iskopavanjem VM-ova na diskove i FTP ili migracijom na razini aplikacije. Naziv potonjeg je uvjetan, i to izgleda otprilike ovako.<\/p>\n<p><i>Studija slu\u010daja 3<br \/>\nPotrebno je bilo migrirati klijentovu SAP sustav s europskog pru\u017eatelja usluga: 34 VM s volumena od 54 TB. Klijentu su dodijeljeni resursi u na\u0161oj obla\u010dnoj usluzi. Izme\u0111u nas i infrastrukture europskog pru\u017eatelja usluga organizirana je mre\u017ena povezanost. Aplikacijski serveri ponovno su raspore\u0111eni, sa potrebnim konfiguracijama. Velike baze podataka migrirane su putem u\u010ditavanja sigurnosnih kopija u na\u0161 oblak. Nakon toga postavljena je replikacija izme\u0111u baza podataka na na\u0161oj i izvornoj platformi. U dogovoreno vrijeme prebacili smo se na baze podataka u na\u0161em oblaku.<\/i><\/p>\n<p><b>Obujam podataka i internetski kanal.<\/b> Obi\u010dno tra\u017eimo od klijenta da dostavi ispravke po sustavima s parametrima memorije, CPU, diskova. Procjenjujemo je li kanal dovoljan za izravno slanje replikacija ili sigurnosnih kopija virtualnih strojeva. <\/p>\n<p><b>Dopustivo zastoja.<\/b> Za razli\u010dite sustave i, sukladno tome, virtualne strojeve mo\u017ee biti razli\u010dito ovisno o njihovoj kriti\u010dnosti za poslovanje. Obi\u010dno klijent dolazi s gotovim zahtjevima o zastoju tijekom migracije, a na temelju toga biramo odgovaraju\u0107i alat i plan migracije. Poku\u0161avamo planirati kona\u010dno prebacivanje u no\u0107nim satima ili vikendima, tako da ni minimalni zastoj ne bude primjetan krajnjim korisnicima klijenta. <\/p>\n<p>Na temelju ovih podataka mo\u017ee se izabrati alat i zapo\u010deti sama migracija. Evo \u0161to se dalje doga\u0111a.<\/p>\n<ol>\n<li><b>Postavljanje mre\u017ene povezanosti. <\/b>Organiziramo mre\u017enu povezanost izme\u0111u na\u0161eg oblaka i infrastrukture klijenta. Kroz ovu mre\u017eu \u0107e se kopirati virtualni strojevi. Ako se koristi Veeam Backup and Replication, to je izdvojeni kanal, rje\u0111e \u2013 VPN kanal. Ako se koristi Veeam Cloud Connect, sve ide kroz internet ili isti taj izdvojeni kanal.\n<p>Zatim se postavlja mre\u017ea za VM u oblaku. Strojevi obi\u010dno prelaze u grupama i ne danima. Nakon \u0161to su VM-ovi preba\u010deni k nama i pokrenuti, moraju komunicirati sa strojevima koji jo\u0161 uvijek ostaju na izvornoj platformi. <\/li>\n<li><b>Raspored migracije.<\/b> Kada je mnogo strojeva, razumno je podijeliti ih u grupe i prevoziti u partijama. Zajedno s klijentom dogovaramo plan u kojem navodimo kada i koji strojevi prelaze te kada \u0107e biti izvr\u0161ena kona\u010dna replikacija i prebacivanje na novu platformu. <\/li>\n<li><b>Testna migracija.<\/b> Migriramo testnu virtualnu ma\u0161inu i provjeravamo je li sve ispravno postavljeno: mre\u017ena povezanost izme\u0111u lokacija, dostupnost virtualne ma\u0161ine za ma\u0161ine na izvornoj lokaciji, prava korisni\u010dkog ra\u010duna i druge stvari. Ova vrsta testa poma\u017ee u izbjegavanju zastoja tijekom stvarne migracije.<\/li>\n<\/ol>\n<p>\nTo bi bilo to s moje strane. Postavite pitanja u komentarima i podijelite svoja iskustva migracije.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dataline\/blog\/476828\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041b\u0435\u0442 7 \u043d\u0430\u0437\u0430\u0434 \u0441\u0430\u043c\u044b\u0435 \u043f\u0435\u0440\u0432\u044b\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u044b \u043f\u0435\u0440\u0435\u0435\u0437\u0436\u0430\u043b\u0438 \u0432 \u043d\u0430\u0448\u0435 \u043e\u0431\u043b\u0430\u043a\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u0438 \u043d\u0435\u0437\u0430\u0442\u0435\u0439\u043b\u0438\u0432\u043e. \u041e\u0431\u0440\u0430\u0437\u044b \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u043b\u0438\u0441\u044c \u043d\u0430 FTP-\u0441\u0435\u0440\u0432\u0435\u0440, \u0438\u043b\u0438 \u0438\u0445 \u043f\u0440\u0438\u0432\u043e\u0437\u0438\u043b\u0438 \u043d\u0430 \u0436\u0435\u0441\u0442\u043a\u0438\u0445 \u0434\u0438\u0441\u043a\u0430\u0445. \u0417\u0430\u0442\u0435\u043c \u0447\u0435\u0440\u0435\u0437 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u043c\u043f\u043e\u0440\u0442-\u0441\u0435\u0440\u0432\u0435\u0440 \u0412\u041c \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u043b\u0438 \u0432 \u043e\u0431\u043b\u0430\u043a\u043e. \u0415\u0441\u043b\u0438 \u0434\u043b\u044f \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u043d\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u043a\u0443 \u043d\u0430 \u0441\u0443\u0442\u043a\u0438-\u0434\u0432\u043e\u0435 (\u0438\u043b\u0438 \u043d\u0435\u0442 \u0434\u0440\u0443\u0433\u0438\u0445 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u0432), \u0442\u043e \u043c\u043e\u0436\u043d\u043e \u0438 \u0442\u0430\u043a. \u041d\u043e \u0435\u0441\u043b\u0438 \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-53098","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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