Cloud computingngy cng c nhc n thng xuyn hn, vy chnh xc l "C g trn my?"Hong Anh Tunin ton m my (cloudcomputing) l vic s dng cc ti nguyn cng ngh (phn cng v phn mm) c cung cp nh mt dch v trn mng (thng l Internet). Tn gi ny n t vic s dng mt biu tng hnh m my nh l mt hnh tng cho c s h tng phc tp n cha trong s h thng. in ton m my y thc dch v t xa vi d liu, phn mm v tnh ton ca ngi dng.

C rt nhiu loi in ton m my cng cng (public cloud computing)

Infrastructure as a service (IaaS) - C s h tng nh mt dch vPlatform as a service (PaaS) - Nn tng nh mt dch vSoftware as a service (SaaS) Phn mm nh mt dch vNetwork as a service (NaaS) Mng li nh mt dch vStorage as a service (STaaS) Lu tr nh mt dch vSecurity as a service (SECaaS) Bo mt nh mt dch vData as a service (DaaS) D liu nh mt dch vDesktop as a service (DaaS - see above) Desktop nh mt dch vDatabase as a service (DBaaS) C s d liu nh mt dch vTest environment as a service (TEaaS) Mi trng kim tra nh mt dch vAPI as a service (APIaaS) Giao din lp trnh ng dng (Application Programming Interface) nh mt dch vBackend as a service (BaaS) Back-end (phn dnh cho ngi qun tr) nh mt dch vIntegrated development environment as a service (IDEaaS) Mi trng pht trin tch hp nh mt dch vIntegration platform as a service (IPaaS), see Cloud-based integration Nn tng tch hp nh mt dch v, xem thm ..

Trong m hnh kinh doanh s dng phn mm nh mt dch v (SaaS), ngi dng c cung cp quyn truy cp vo phn mm ng dng v c s d liu. Cc nh cung cp m my qun l c s h tng v nn tng m trn cc ng dng chy. SaaS i khi cn c gi l "phn mm theo yu cu" (on-demand software) v thng c nh gi trn c s tr tin theo vic s dng (pay-per-use). Nh cung cp SaaS thng t gi cho cc ng dng bng cch s dng mt khon ph thu bao.

Nhng ngi ng h cho rng SaaS cho php doanh nghip tim nng gim chi ph vn hnh IT bng cch gia cng vic duy tr v h tr phn cng, phn mm cho nh cung cp m my. iu ny cho php cc doanh nghip ti phn b chi ph hot ng t chi ph phn cng/phn mm cng nh chi ph nhn vin, hng ti p ng cc mc tiu IT khc. Ngoi ra, vi cc ng dng lu tr c lu tr tp trung, vic cp nht c th c tin hnh m khng cn ngi dng ci t phn mm mi. Mt nhc im ca SaaS l ca ngi s dng d liu c lu tr trn my ch ca nh cung cp m my. Kt qu l, c th c truy cp tri php vo d liu.

Ads by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd OptionsNhng ngi dng u cui (end-user) truy cp cc ng dng m my thng qua trnh duyt web hoc my bn hoc ng dng di ng trong khi phn mm doanh nghip v d liu ngi dng c lu tr ti cc my ch mt a im khc. Nhng ngi ng h cho rng in ton m my cho php cc doanh nghip c nhng ng dng chy nhanh hn, kh nng qun l c ci thin trong khi bo tr t hn, v cho php b phn IT iu chnh nhanh chng hn cc ngun lc p ng nhu cu kinh doanh bin ng v khng th lng trc.

in ton m my da trn vic chia s cc ngun lc t c s gn kt v hiu qu kinh t theo quy m tng t i vi mt thnh phn trn c mng li (nh h thng li in). Ti nn tng in ton m my l khi nim rng hn ca c s h tng hi t v cc dch v chia s.

Cc m hnh dch v

Ads by OnlineBrowserAdvertisingAd Options

Ads by OnlineBrowserAdvertisingAd OptionsCc nh cung cp dch v in ton m my cung cp cc dch v ca h theo ba m hnh c bn: c s h tng nh mt dch v (IaaS), nn tng nh mt dch v (PaaS), v phn mm nh mt dch v (SaaS) trong IaaS l c bn nht v mi m hnh cao hn tm tt t cc chi tit ca nhng m hnh thp hn. Trong nm 2012, mng li nh mt dch v (NaaS) v giao tip nh mt dch v (CaaS) chnh thc thm vo bi Hip hi vin thng quc t (International Telecommunication Union) nh l mt phn ca cc m hnh in ton m my c bn, cc loi hnh dch v c cng nhn ca h sinh thi m my vin thng.

C s h tng nh mt dch v (IaaS)

Ads by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd OptionsTrong m hnh dch v in ton m my c bn nht, cc nh cung cp m hnh IaaS cung cp my tnh thc t hoc (thng xuyn hn) my o v cc ngun lc khc. (Mt trnh qun l my o, chng hn nh Xen hoc KVM, chy cc my o khch.) Tp hp cc trnh qun l my o (hypervisor) bn trong h thng h tr hot ng m my c th h tr lng ln cc my o v kh nng m rng hoc thu hp cc dch v theo yu cu khc nhau ca khch hng. Cc m my IaaS thng cung cp cc ngun lc b sung, chng hn nh hnh nh trong th vin hnh nh ca my o, lu tr th (l) v tp tin, tng la, load balancer, a ch IP, cc mng o ni b (VLAN), v cc phn mm i km. Cc nh cung cp m my IaaS cung cp cc ngun ti nguyn ny theo yu cu t tp hp ln ca h vn c ci t cc trung tm d liu. i vi kt ni din rng, khch hng c th s dng Internet hoc cc carriercloud(dnh cho cc mng ring o).

trin khai cc ng dng ca h, cc ngi dng in ton m my ci t h iu hnh v phn mm ng dng ca h trn c s h tng m my. Trong m hnh ny, ngi dng s v li v bo tr h thng v phn mm ng dng ca h. Cc nh cung cp dch v in ton m my thng tnh ph dch v IaaS trn c s in ton thnh phn: chi ph phn nh s lng ngun lc c phn b v tiu th.

V d cc nh cung cp IaaS bao gm Amazon CloudFormation, Amazon EC2, Windows Azure Virtual Machines, DynDNS, Google Compute Engine, HP Cloud, iland, Joyent, Rackspace Cloud, ReadySpaceCloud Services, Terremark v NaviSite.

Nn tng nh mt dch v (PaaS)

Ads by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd OptionsTrong m hnh PaaS, nhng nh cung cp dch v m my cung cp nn tng in ton thng bao gm c h iu hnh, mi trng thc hin ngn ng lp trnh, c s d liu, v my ch web. Nh pht trin ng dng c th pht trin v chy cc gii php phn mm ca h trn mt nn tng in ton m my m khng cn tn chi ph v s phc tp ca vic mua v qun l phn cng c bn v cc lp phn mm. Vi mt s gi PaaS, my tnh c bn v cc ngun lc lu tr t ng thay i quy m ph hp vi nhu cu ng dng qua ngi dng khng phi t phn b ngun lc.

Phn mm nh mt dch v (SaaS)

Trong m hnh SaaS, nh cung cp dch v m my ci t v vn hnh phn mm ng dng bn trong m my v nhng ngi s dng in ton m my truy cp cc phn mm t cc khch hng ca dch v m my. Nhng ngi s dng in ton m my khng qun l c s h tng m my v nn tng m trn cc ng dng ang chy. iu ny gip loi b vic ci t v chy cc ng dng trn my tnh ca ngi dng, n gin ha vic bo tr v h tr. iu lm cho mt ng dng in ton m my khc bit i vi cc ng dng khc l kh nng m rng ca n. iu ny c th t c bng cc tc v nhn bn (cloning) ln nhiu my o p ng nhu cu cng vic thay i. Cc load balancer phn phi cng vic trn cc thit lp ca my o. Qu trnh ny hon ton v hnh vi ngi dng, h ch nhn thy mt im truy cp duy nht. cha mt s lng ln ngi dng, cc ng dng m my c th c multitenant, c ngha l, bt k my ch no cng u phc v nhiu hn mt t chc s dng. Vic tham chiu ti cc loi phn mm ng dng m my c bit tr nn ph bin vi mt quy tc t tn: desktop nh mt qu trnh dch v, qu trnh kinh doanh nh mt dch v, mi trng kim tra nh mt dch v, giao tip nh mt dch v.

M hnh nh gi cho cc ng dng SaaS thng l mt khon ph c nh hng thng hoc hng nm cho mi ngi dng, qua gi c kh nng thay i rng v iu chnh nu ngi dng thm vo hoc g b bt c im no.V d v SaaS bao gm: Google Apps,Microsoft Office365, OnLive, GT Nexus, Marketo, v TradeCard.

Mng li nh mt dch v (NaaS)

Mt loi dch v m my c kh nng cung cp cho ngi dng dch v m my s dng mng li/ dch v kt ni truyn ti v/hoc dch v kt ni mng gia cc m my. NaaS lin quan n vic ti u ha phn b ngun lc bng cch xem xt ti nguyn mng v my tnh nh mt th thng nht.

Dch v NaaS truyn thng bao gm mng ring o (VPN) m rng v linh hot, cng nh bng thng theo yu cu. C th ha th khi nim NaaS cng bao gm vic cung cp mt dch v mng o t cc ch s hu c s h tng mng li cho mt bn th ba (VNP - VNO).

Cc m hnh trin khai

Ads by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd Options

m my cng cngCc ng dng, lu tr v cc ti nguyn khc ca m my cng cng c thc hin cho cng chng bi mt nh cung cp dch v c sn. Nhng dch v ny min ph hoc c cung cp trn mt m hnh tr theo s dng (pay-per-use). Ni chung, cc nh cung cp dch v in ton m my cng cng nhAmazonAWS, Microsoft v Google s hu v vn hnh c s h tng v cung cp truy cp ch qua Internet (kt ni trc tip khng c cung cp).

in ton m my cng ngin ton m my cng ng chia s c s h tng gia cc t chc t mt cng ng c th vi cc mi quan tm chung (bo mt, Cng ng chia s c s h tng in ton m my gia mt s t chc t mt cng ng c th vi cc mi quan tm chung (an ninh, k lut, php l, vv), cho d c qun l ni b hay bi mt bn th ba v bi mt t chc ni b hay bn ngoi. Cc chi ph ny c chia cho mt lng ngi dng t hn so vi m my cng cng (nhng nhiu hn m my t nhn), do , ch c s c t khon tit kim chi ph tim nng hn.

m my hn hp (hybrid)m my hybrid l mt thnh phn ca hai hoc nhiu m my (t nhn, cng ng hoc cng cng) vn gi nguyn cc thc th duy nht nhng lin kt chng vi nhau, cung cp cc li ch ca nhiu m hnh trin khai.

Bng cch s dng kin trc "m my hybrid", cc cng ty v c nhn c th c c kh nng chu li kt hp vi kh nng s dng ti ch ngay lp tc m khng cn ph thuc vo kt ni internet. Kin trc m my hybrid i hi c ngun ti nguyn ti ch v m my ngoi tuyn (t xa).

Cc m my hybrid thiu s linh hot, an ninh v chc chn ca cc ng dng in-house. Cc m my hybrid cung cp s linh hot i vi cc ng dng ni b vi kh nng chu li v kh nng m rng dch v m my.

m my t nhnAds by OnlineBrowserAdvertisingAd OptionsAds by OnlineBrowserAdvertisingAd Optionsm my t nhn l c s h tng in ton m my ch hot ng cho mt t chc duy nht, cho d c qun l ni b hay bi mt bn th ba v lu tr ni b hay bn ngoi. Thc hin mt d n in ton m my t nhn i hi mt mc tham gia ng k o ha mi trng kinh doanh, n yu cu t chc phi nh gi li cc quyt nh v cc ngun lc hin c. Khi c thc hin ng, n c th mang li mt tc ng tch cc i vi doanh nghip, nhng mi bc trong d n u t ra cc vn v bo mt cn c gii quyt trnh cc l hng nghim trng.

M hnh ny b ch trch bi v ngi dng vn phi mua, xy dng, v qun l chng" v do khng c hng li t vic khng phi qun l.

Google App Engine, khng kh s dngNguyn Vit KhoaCh khcJava3 Comments[TapChiLapTrinh] Bn ang c mt ng dng Java EE cc hay mun pht hnh khoe vi ngi khc, hay ch n gin l bn ang lm bi tp v mun c th trc tip trn mi trng thc. Nhng bn bit , mun kim c c mt host min ph h tr Java EE u phi d, li cn lng nhng my chuyn upload, deploy na ch. Ngh n mun nn ri nh. l chuyn ca ngy xa thi, cn ngy nay, bn khng cn lo lng my vn cn con na, ci g m hay vy? GOOGLE APP ENGINE. Vy n l ci g?Google App Engine (GAE) cho php bn chy cc ng dng web trn h tng ca Google. Bn d dng xy dng, bo tr, tng lu lng truy cp v tng dung lng lu tr. Vi App Engine, khng c my ch bo tr: Bn ch cn ti ln ng dng ca bn, v n sn sng phc v ngi dng.Bn c th dng tn min ca bn hoc dng tn min min ph ca GAE c uiappspot.com. Bn c th chia s cc ng dng ca bn vi th gii, hoc gii hn truy cp cho cc thnh vin ca t chc ca bn.GAE h tr cc ng dng vit bng nhiu ngn ng lp trnh khc nhau nh Java, Python v Go.Vi GAE, bn ch phi tr cho nhng g bn s dng. Khng c chi ph thit lp ban u v khng c ph nh k. Cc ngun ti nguyn ng dng ca bn s dng, chng hn nh lu tr v bng thng, c o bng gigabyte, vi mc gi cnh tranh. Bn kim sot s tin ti a cc ngun lc ng dng ca bn c th tiu th, do , n lun lun nm trong phm vi ngn sch ca mnh.Tt c cc ng dng c th s dng ln n 1GB dung lng lu tr v CPU v bng thng h tr mt ng dng hiu qu phc v cho khong 5 triu lt xem mt thng, hon ton min ph. Khi bn cn nhiu hn con s kia bn mi cn phi ngh n chuyn tr tin cho Google, nhng ti ngh l chuyn ca doanh nghip, cn chuyn ca lp trnh vin th theo ti con s kia l tm n ri.Nhng ng ln no ang s dng GAE ?(Ngunhttps://cloud.google.com/customers/)Gii thiu nh vy chc l , by gi chng ta s bt u cc bc s dng GAE.Bc 1: u tin bn s cn mt ti khon Google, tip theo bn vo tranghttps://appengine.google.com bt u to ng dng. Google s bt bn xc minh ti khon ca bn bng s in thoi di ng (yn tm l Google c h tr cho s in thoi Vit Nam nh, bc xc minh ny c l s hi mt thi gian cht v khng phi lc no Google cng gi code v ngay). Sau khi xc minh xong bn c th to ng dng c ri. Bn cng ch l Application Id phi l duy nht trn ton h thng ca GAE v cha c ai dng, nn bn khng th dng id m ti ang dng c nh.

Bc 2: Ci t mi trng pht trinBn s cn IDE Eclipse, nu cha c bn c th ti v bn mi nht ti yhttp://www.eclipse.org/downloadsCi t thm plugin Google App Engine cho Eclipse 4.2 (Juno):- Trn thanh trnh n v chn Help > Install New Software.- Trong Work with, bn nhp vo https://dl.google.com/eclipse/plugin/4.2(Nu bn dng Eclipse bn c hn bn c th xem thm thng tin ti trang web sau:https://developers.google.com/appengine/docs/java/tools/eclipse)

Khi ng li Eclipse sau khi thm xong plugin.a) To project mi trong EclipseTrn thanh trnh n bn chn File > New > Web Application Project

n y bn c th bt tay vo code ng dng c ri.b) Chy ng dng ca bn trn localNhp chut phi vo project ca bn v chnRunas > Web Application.

ng dng s c chy trn cng 8080 (hoc cng khc ph thuc vo cu hnh ca bn), vi ti ng dng s chy trn trnh duyt vi URL: http://localhost:8080/hellogoogleapp.c) Deploy ng dng ln Server ca Google App.Trc tin bn cn cu hnh Application Id cho Eclipse. Nhp chut phi vo project ca bn v chn Properties > Google > App Engine v nhp Application Id ca bn.

trin khai ng dng bn nhp chut phi vo project > Google > Deploy to app engine.Vy l xong, gi ti c th vo http://hellogoogleapp.appspot.com xem ng dng ca mnh ri.Ti gii thiu xong v cng c mt ng dng u tin vi GAE. Cn bn, bn c mun tri nghim vi GAE khng nh? Bt tay ngay thi nh.Bi vit ti ti s gii thiu ti bn cch thc n gin pht trin mt ng dng trn Facebook vi Java v GAE, ch nh s nhanh thi