Semina

TRNG I HC KHOA HC T NHIN TP.HCMKHOA CNG NGH THNG TIN

---------------------------------(+(------------------------------ MN HC: Seminar Mng My Tnh ti: Cloud Linux HostingGing vin:

Tr ging:

Sinh vin thc hin:L Hong Khnh.1112132Trng Quang Ln..1112158

Cao Trn Hu Lc...1112172

Ni dung

3I.Tng quan v CloudLinux

31.Nguyn nhn ra i

42.Khi nim

5II.Tnh nng

51.Phn lp cc ti khon

52.Gii hn ti nguyn

6III.c im ca CloudLinux Hosting

61. n nh cao

62.Nng cao kh nng s dng my ch

63.Hiu qu kinh t

64.Chuyn i linh hot

6IV.Cc thnh phn trong CloudLinux

61.Lightweight Virtual Environments (LVE) limits

72.MySQL Governor

73.CageFS

84.PHP Selector

85.Secure LVE

86.SecureLinks:

9V.Kh nng pht trin ca CloudLinux

91. n nh ca my ch cao

92.a h tr

9VI.So snh CloudLinux Hosting vi cc loi Shared Hosting khc:

10VII.Ti liu tham kho

I. Tng quan v CloudLinux1. Nguyn nhn ra i

Cc dch v Shared Hosting khc, kh nng cung cp CPU v RAM index.php 99,99%

homepage.php 99,99%

forum/forum.php 99,99%

iu ny dn ti tnh hung khi mt site c s c qu ti hay b DDoS va v nh th c server u b nh hng.

Thm vo l vn Local attack (tn cng cc b) hay cn gi "bad neighbor effect".My ch thng thng(*)Local attack: l k thut hack website bng hnh thc tn cng t ni b bn trong. Ngha l tn cng vo mt website c bo mt km nm chung server vi website mc tiu. Sau tn cng sang website mc tiu bng cc k thut khc nhau t c mc ch cui cng l chim c ton quyn website mc tiu (victim).

V d:

+ Server l mt ci PC c nhiu folder trn .

+ Mi folder tng ng vi 1 user ton quyn trn n.

+ Local attach l lm sao ng t folder ny dm ng v chui vo c ci folder khc.

Do nhng yu t, yu cu t ra l phi c mt mi trng Shared Hosting mi c th gii quyt nhng vn trn.

(T CloudLinux Hosting ra i.

2. Khi nim

CloudLinux OS l h iu hnh Unix/Linux thng mi u tin c thit k phc v ch yu dnh cho cc nh cung cp trong lnh vc dch v Web Hosting. Vi vic s dng cng ngh LVE (Lightweight Virtual Environments - To mi trng o ha) to ra mt bc t ph mi trong vn qun l ti nguyn my ch cng nh ti nguyn i vi tng ti khon hosting trn my ch.My ch s dng CloudLinuxII. Tnh nng

Nh phn tch cc phn trn, chc nng chnh ca Cloud Linux tp trung ch yu vo:

Phn lp ti khon

Gii hn ti nguyn

Ngoi ra CloudLinux cn cung cp thm mt s tnh nng quan trng khc nh pht hnh nhanh cc bn v bo mt gi cho khch hng c an ton.1. Phn lp cc ti khon Tt c cc ti khon trn my ch c phn lp ring trong mt phn vng o i vi cc ti khon khc, m bo cho d mt ti khon gp s c th cc ti khon cc vn an ton v n nh.

V d:

Ti khon hosting 1: index.php 20,00%

Ti khon hosting 2: homepage.php 20,00%

Ti khon hosting 3: forum/forum.php 20,00%

2. Gii hn ti nguynCloudLinux s dng cng ngh can thip cp nhn h iu hnh (kernel OS) thit lp gii hn ti nguyn trn mi ti khon. iu m bo mt ti khon khng th dng qu gii hn ti nguyn c cp pht.

III. c im ca CloudLinux Hosting

1. n nh cao

Tt c nhng i mi ca CloudLinux u nhm mc ch ci thin tnh bo mt v n nh trn cc my ch. cc h iu hnh khc ton b my ch s b down v s c ca mt khch hng no , nh hng n ton b h thng, cn vi CloudLinux th h thng vn n nh bng cch cch ly khch hng b s c vi cc khch hng khc.2. Nng cao kh nng s dng my ch

Trin khai CloudLinux gip ti u ha vic s dng mi my ch. Do gii hn t ra cho CPU, IO, v b nh. Nh tng kh nng cung cp ca my ch (tng s ti khon ca khch hng) i vi mi my ch vt l.

3. Hiu qu kinh t Gip gim gi thnh bo tr: nh my ch n nh hn nn thi gian v chi ph cho vic bo tr gim.

4. Chuyn i linh hot Rt d dng bt u vi CloudLinux cho d tin hnh trn my ch ci t sn hoc ci mi.IV. Cc thnh phn trong CloudLinux1. Lightweight Virtual Environments (LVE) limits LVE l ng dng mc kernel c pht trin bi i ng ca CloudLinux. Cc tnh nng ca LVE:

Cho php admin qun tr ti nguyn CPU cp cho mi user

Ngn cn vic mt site nh hng n cc site khc hoc c server

Xc nh c site no s dng qu mc ti nguyn quy nh t c nhng bin php thch hp.

2. MySQL Governor

MySQL Governor l mt tp hp cc tin ch gim st v iu hnh MySQL usage trong mi trng Shared Hosting. Vic gim st c thc hin thng qua s liu thng k ti nguyn dng cho mi tiu trnh MySQL, theo di chnh xc CPU v IO c s dng. Nh s liu thng k thi gian thc, ngay lp tc c th pht hin nhng tin trnh lm dng MySQL v tiu dit chng.3. CageFS

CageFS l mt h thng tp tin o v mt b cng c cha mi ngi dng trong 'lng' ca ring mnh. Mi khch hng s c CageFS y chc nng ring ca mnh, vi tt c cc tp tin h thng, cng c, vv .. Nhng li ch ca CageFS: Ch c nhng chng trnh an ton mi c s dng Ngi dng ny s khng thy bt k ngi dng khc, v s khng c cch no pht hin s hin din ca nhng ngi dng khc v tn ngi dng ca h trn my ch Ngi dng s khng th xem cc tp tin cu hnh my ch, chng hn nh tp tin cu hnh Apache. Ngi dng cng khng th truy cp h thng tp tin /proc, v s khng th nhn thy qu trnh x l ca ngi dng khc4. PHP Selector

PHP Selector l mt thnh phn trong CloudLinux ng u CageFS. N cho php mi ngi dng la chn phin bn PHP & m-un da trn nhu cu ca h.

5. Secure LVE

SecureLVE m rng tnh phn lp ca LVE ti h thng file ca tng ti khon. Thng qua o ha, h thng file ca mi ti khon c phn lp trong phn vng o ha ca chnh mnh, ngn chn tnh trng mt ti khon c th nhn thy hoc can thip ti h thng file hoc cc ti khon khc trn cng mt my ch. Cng ngh ny to ra mt tng mi ca bo mt, khin cho cc hacker kh khn hn nhiu trong vic tn cng, thay i d liu hoc nh cp d liu trn mt my ch sharing hosting (local attack).

6. SecureLinks:

L mt cng ngh cp nhn h iu hnh (kenel OS) c th ngn chn tt c cc cuc tn cng lin kt tng trng (symbolic link) c bit n, lm tng cng mc bo mt ca my ch hn na.(*)Symbolic links: vn c bit n vi ci tn symlinks, v c bn l bin php to shortcut nng cao. Ngi dng c th to cc lin kt tng trng cho cc file hoc th mc ring l, sau cc lin kt ny s xut hin nh th chng c lu trong cng th mc vi lin kt tng trng mc d lin kt tng trng li tr n v tr thc ca chng.

C hai kiu lin kt tng trng: cng v mm. Cc lin kt tng trng mm lm vic v c bn ging nh mt shortcut chun. Khi m mt lin kt mm, bn s c chuyn hng n mt th mc m c lu tr cc file. Mc d vy, mt lin kt cng li lm cho n xut hin nh th file hoc th mc tn ti thc location ca lin kt tng trng, cc ng dng ca bn s khng bit s khc bit ny.

V. Kh nng pht trin ca CloudLinux1. n nh ca my ch cao

CloudLinux l h iu hnh thng mi u tin ph hp vi nhu cu c th ca my ch web. CloudLinux l s la chn cho cc trang website v mi trng n nh n cung cp ngay c trong nhng tnh hung cc oan nht.

2. a h tr

CloudLinux Hosting c h tr bi nhiu phn mm thng dng v Control panels: cPanel, DirectAdmin, Webmin, Parallels Plesk Panel, Hosting Controller Tm li vi nhng c im ni bt , CloudLinux ang ngy cng l s la chn ca cc web hosting server v nhng ngi mun thu dch v host lu tr web.VI. So snh CloudLinux Hosting vi cc loi Shared Hosting khc:Cc loi Shared Hosting khcCloudLinux Hosting

Bt k website no cng c th tiu hao ti nguyn cho mt lot cc l do.

Website n c th lm qu ti my ch.

Khng an ton hay c th bo v khi tin tc hoc cc kch bn gy tiu hao ti nguyn ca khch hng.

Lm tng nguy c v lm gim hiu qu ca cc my ch.

C lp ngun ti nguyn thng qua cng ngh LVE.

Cng ngh LVE ngn chn cc trang web c nhn s dng qu nhiu ti nguyn.

Cng ngh LVE cung cp kh nng bo mt tt hn v bo v cc my ch khi cc vn tiu hao ti nguyn ca khch hng.

Website n khng th gy qu ti my ch.

Lm gim ri ro, tng hiu qu v ci thin hiu sut my ch.

Hin ti v trong tng lai, CloudLinux Hosting s pht trin rt nhanh v chim lnh ngi u trong mi trng Shared Hosting nh vo nhng u im ca n.

VII. Ti liu tham kho

1. http://kythuatlaptrinh.com/noi-dung/gioi-thieu-cloud-linux-he-dieu-hanh-chuyen-dung-cho-shared-hosting.html2. http://tocdoviet.vn/tai-lieu/Tai-lieu-May-Chu/CloudLinux-la-gi-91/3. http://wiki.matbao.com/CloudLinux-la-gi.ashx4. http://www.datapool.vn/cloudlinux-overview.html5. http://www.cloudlinux.com/about/6. http://fastdot.com/hosting/cpanel-cloud-hosting/cloudlinux-hosting/11