{"id":82495,"date":"2020-05-22T01:42:27","date_gmt":"2020-05-21T23:42:27","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/ovirt-za-2-chasa-chast-1-otkrytaya-otkazoustojchivaya-platforma-virtualizaczii"},"modified":"2020-05-22T01:42:27","modified_gmt":"2020-05-21T23:42:27","slug":"ovirt-za-2-chasa-chast-1-otkrytaya-otkazoustojchivaya-platforma-virtualizaczii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/ovirt-za-2-chasa-chast-1-otkrytaya-otkazoustojchivaya-platforma-virtualizaczii","title":{"rendered":"oVirt p\u00ebr 2 or\u00eb. Pjesa 1. Platforma e hapur e virtualizimit me q\u00ebndrueshm\u00ebri","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Hyrje<\/h2>\n

\nProjekti me kod burim t\u00eb hapur oVirt<\/a><\/noindex> \u2014 nj\u00eb platform\u00eb falas e virtualizimit t\u00eb nivelit t\u00eb korporat\u00ebs. Duke shfletuar Habr, zbulova se oVirt<\/a><\/noindex> nuk \u00ebsht\u00eb p\u00ebrmendur k\u00ebtu aq gjer\u00ebsisht sa e meriton.
\noVirt \u00ebsht\u00eb n\u00eb fakt upstream p\u00ebr sistemin komercial Red Hat Virtualization (RHV, m\u00eb par\u00eb RHEV), duke u rritur n\u00ebn mb\u00ebshtetje t\u00eb Red Hat. P\u00ebr t\u00eb shmangur konfuzionin, kjo \u00ebsht\u00eb nuk<\/b> e nj\u00ebjt\u00eb me CentOS vs RHEL, modeli \u00ebsht\u00eb m\u00eb i af\u00ebrt me Fedora vs RHEL.
\nN\u00ebn kapak \u2014 KVM<\/a><\/noindex>, p\u00ebr menaxhim p\u00ebrdoret nj\u00eb nd\u00ebrfaqe web. Bazohet n\u00eb OS RHEL\/CentOS 7.
\noVirt mund t\u00eb p\u00ebrdoret si p\u00ebr virtualizimin e \"tradicionalizuar\" t\u00eb server\u00ebve, ashtu edhe p\u00ebr virtualizimin desktop (VDI), ndryshe nga zgjidhja VMware, t\u00eb dy sistemet mund t\u00eb jetojn\u00eb n\u00eb nj\u00eb kompleks.
\nProjekti \u00ebsht\u00eb mir\u00eb i dokumentuar<\/a><\/noindex>, ka arritur me koh\u00eb pjekurin\u00eb p\u00ebr aplikime produktive dhe \u00ebsht\u00eb i gatsh\u00ebm p\u00ebr ngarkesa t\u00eb larta.
\nKy artikull \u00ebsht\u00eb i pari n\u00eb nj\u00eb cik\u00ebl rreth nd\u00ebrtimit t\u00eb nj\u00eb klasteri t\u00eb besuesh\u00ebm n\u00eb funksion. Duke kaluar p\u00ebrmes tyre, ne do t\u00eb kemi nj\u00eb sistem t\u00eb plot\u00eb funksional n\u00eb nj\u00eb koh\u00eb t\u00eb shkurt\u00ebr (rreth 2 or\u00eb), megjithat\u00eb, disa \u00e7\u00ebshtje, sigurisht, nuk do t\u00eb mund t'i zbuloj, do t\u00eb p\u00ebrpiqem t'i p\u00ebrmend ato n\u00eb artikujt e ardhsh\u00ebm.<\/a><\/noindex>
\nE p\u00ebrdorim at\u00eb p\u00ebr disa vite, kemi filluar me versione 4.1. Sistemi yn\u00eb industrial tani funksionon n\u00eb serverat HPE Synergy 480 dhe ProLiant BL460c t\u00eb gjenerationit t\u00eb 10-t\u00eb me CPU Xeon Gold.
\nN\u00eb momentin e shkrimit, versioni aktual \u00ebsht\u00eb 4.3. <\/p>\n

Artikuj<\/h2>\n

<\/p>\n

    \n
  1. Hyrja (Ne jemi k\u00ebtu)<\/li>\n
  2. Instalimi i menaxherit (ovirt-engine) dhe hipervizor\u00ebve (hosts)<\/a><\/noindex><\/li>\n
  3. Konfigurimet shtes\u00eb<\/a><\/noindex><\/li>\n<\/ol>\n

    Karakteristikat funksionale<\/h2>\n

    \nN\u00eb oVirt ka 2 entitete kryesore: ovirt-engine dhe ovirt-host(s). P\u00ebr ata q\u00eb jan\u00eb mir\u00eb t\u00eb njohur me produktet VMware, oVirt si platform\u00eb \u00ebsht\u00eb n\u00eb p\u00ebrgjith\u00ebsi si vSphere, ovirt-engine \u2014 shtresa e menaxhimit \u2014 kryen t\u00eb nj\u00ebjtat funksione si vCenter, dhe ovirt-host \u2014 hipervizor, si ESX(i). Duke qen\u00eb se vSphere \u00ebsht\u00eb nj\u00eb zgjidhje shum\u00eb e njohur, ndonj\u00ebher\u00eb do t\u00eb jap krahasime me t\u00eb.
    \n\"oVirt
    \nFig. 1 \u2014 paneli i kontrollet oVirt.<\/p>\n

    Si makina mysafire mb\u00ebshteten shumica e distribucioneve Linux dhe versioneve t\u00eb Windows. P\u00ebr makinat mysafire ka agjent\u00eb dhe pajisje virtuale t\u00eb optimizuara dhe drejtues virtio, n\u00eb radh\u00eb t\u00eb par\u00eb kontrolle t\u00eb diskut dhe nd\u00ebrfaqe rrjeti.
    \nP\u00ebr t\u00eb realizuar nj\u00eb zgjidhje t\u00eb besueshme dhe t\u00eb gjitha funksionet interesante, k\u00ebrkohet ruajtje e p\u00ebrbashk\u00ebt. Mb\u00ebshteten si ruajtjet blokore FC, FCoE, iSCSI, ashtu dhe ruajtjet NFS dhe t\u00eb tjera. P\u00ebr t\u00eb realizuar nj\u00eb zgjidhje t\u00eb besueshme, sistemi i ruajtjes gjithashtu duhet t\u00eb jet\u00eb i besuesh\u00ebm (t\u00eb pakt\u00ebn 2 kontrollues, multi-pathing).
    \nP\u00ebrdorimi i ruajtjeve lokale \u00ebsht\u00eb i mundur, por automatikisht p\u00ebr nj\u00eb grup t\u00eb v\u00ebrtet\u00eb pranohen vet\u00ebm ruajtjet e p\u00ebrbashk\u00ebt (shared storages). Ruajtjet lokale e b\u00ebjn\u00eb sistemin nj\u00eb grup t\u00eb shp\u00ebrndar\u00eb hiper-vizor\u00ebsh dhe madje edhe me nj\u00eb ruajtje t\u00eb p\u00ebrbashk\u00ebt nuk \u00ebsht\u00eb e mundur t\u00eb formohet grupi. Rruga m\u00eb e sakt\u00eb \u00ebsht\u00eb t\u00eb p\u00ebrdoren makinat pa disk me boot from SAN, ose disqe me kapacitet minimal. Ndoshta, p\u00ebrmes vdsm hook \u00ebsht\u00eb e mundur t\u00eb krijohet nj\u00eb variant nga disqet lokale Software Defined Storage (p.sh., Ceph) dhe ta prezantohet at\u00eb VM, por nuk e kam konsideruar seriozisht.<\/p>\n

    Arkitektura<\/h4>\n

    \n\"oVirt
    \nFig. 2 \u2014 arkitektura e oVirt.
    \nP\u00ebr m\u00eb shum\u00eb mbi arkitektur\u00ebn mund t\u00eb njihni n\u00eb     dokumentacion<\/a><\/noindex> zhvilluesi.<\/p>\n

    \"oVirt
    \nFig. 3 \u2014 objektet e oVirt.<\/p>\n

    Elementi m\u00eb i lart\u00eb n\u00eb hierarki \u2014 Data Center<\/b>. Ai p\u00ebrcakton n\u00ebse p\u00ebrdoren depo t\u00eb ndara (shared) ose lokale, si dhe grupin e funksioneve t\u00eb p\u00ebrdorura (kompatibiliteti, nga 4.1 deri n\u00eb 4.3). Mund t\u00eb ket\u00eb nj\u00eb ose m\u00eb shum\u00eb. P\u00ebr shum\u00eb variante \u00ebsht\u00eb e p\u00ebrshtatshme p\u00ebrdorimi i Qendr\u00ebs s\u00eb T\u00eb Dh\u00ebnave sipas parazgjedhjes \u2014 Default.
    \nQendra e T\u00eb Dh\u00ebnave p\u00ebrb\u00ebhet nga nj\u00eb ose m\u00eb shum\u00eb Kluster\u00eb<\/b>. Klusterri p\u00ebrcakton llojin e procesorit, politik\u00ebn e migrimit dhe t\u00eb tjera. P\u00ebr instalime t\u00eb vogla, mund t\u00eb mjaftohet edhe me klusterin Default.
    \nKlusterri, nga ana tjet\u00ebr, p\u00ebrb\u00ebhet nga Host<\/b>‘\u043e\u0432, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0438\u0445 \u043e\u0441\u043d\u043e\u0432\u043d\u0443\u044e \u0440\u0430\u0431\u043e\u0442\u0443 \u2014 \u043e\u043d\u0438 \u043d\u0435\u0441\u0443\u0442 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0435 \u043c\u0430\u0448\u0438\u043d\u044b, \u043a \u043d\u0438\u043c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430. \u0412 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0435 \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f 2 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0445\u043e\u0441\u0442\u043e\u0432. \u0425\u043e\u0442\u044f \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u043a\u043b\u0430\u0441\u0442\u0435\u0440 \u0441 1-\u043c \u0445\u043e\u0441\u0442\u043e\u043c, \u043d\u043e \u044d\u0442\u043e \u043d\u0435 \u0438\u043c\u0435\u0435\u0442 \u043f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043f\u043e\u043b\u044c\u0437\u044b.<\/p>\n

    N\u00eb oVirt mb\u00ebshteten shum\u00eb funksione, p\u00ebrfshir\u00eb migrimin e gjall\u00eb t\u00eb makinave virtuale midis hiperator\u00ebve (live migration) dhe depo (storage migration), virtualizimin desktop (virtual desktop infrastructure) me grupe VM, VM statefull dhe stateless, mb\u00ebshtetje p\u00ebr NVidia Grid vGPU, import nga vSphere, KVM, ka nj\u00eb API<\/a><\/noindex> dhe shum\u00eb t\u00eb tjera. T\u00eb gjitha k\u00ebto funksione jan\u00eb t\u00eb disponueshme pa pagesa licencash, dhe n\u00ebse \u00ebsht\u00eb e nevojshme p\u00ebr mb\u00ebshtetje, ajo mund t\u00eb blihen nga Red Hat p\u00ebrmes partner\u00ebve rajonal\u00eb.<\/p>\n

    P\u00ebr \u00e7mimet e RHV<\/h4>\n

    \nKostoja nuk \u00ebsht\u00eb e lart\u00eb krahasuar me VMware, blihen vet\u00ebm sh\u00ebrbimet \u2014 pa k\u00ebrkes\u00ebn p\u00ebr blerjen e licenc\u00ebs vet\u00eb. Sh\u00ebrbimi merret vet\u00ebm p\u00ebr hipervizor\u00ebt, ovirt-engine, ndryshe nga vCenter Server q\u00eb nuk k\u00ebrkon shpenzime.<\/p>\n

    Shembuj i llogaritjes p\u00ebr vitin e 1-r\u00eb t\u00eb pron\u00ebsis\u00eb<\/h4>\n

    \nT\u00eb shqyrtojm\u00eb nj\u00eb klaster prej 4 makinash me 2 socket dhe \u00e7mimet e shitjes me pakic\u00eb (pa zbritje projekti).
    \nAbonimi standard i RHV     kushton $999<\/a><\/noindex> p\u00ebr socket\/vit (premium 365\/24\/7 \u2014 $1499), totali 4*2*$999=$7992<\/b>.
    \n    \u00c7mimi i vSphere<\/a><\/noindex>:<\/p>\n