Moni, owerenga a Habr! M'nkhani yapitayi, tinakambirana za njira yosavuta yopulumutsira masoka mu machitidwe osungiramo AERODISK ENGINE: kubwerezabwereza. M'nkhaniyi, tikambirana za mutu wovuta kwambiri komanso wosangalatsa: metrocluster, njira yodzitetezera pakagwa masoka m'malo awiri a data omwe amathandizira kugwira ntchito mwachangu. Tifotokoza, kuwonetsa, kuswa, ndi kukonza.
Monga mwachizolowezi, chiphunzitso choyamba
Gulu la metro ndi gulu lomwe limagawidwa m'malo angapo mkati mwa mzinda kapena chigawo. Mawu oti "cluster" akuwonetsa momveka bwino kuti zovutazo zimangochitika zokha, kutanthauza kuti ma cluster node amangosintha pakalephera.
Apa ndipamene pali kusiyana kwakukulu pakati pa gulu la metro ndi kubwereza kofananako kuli: automation of operations. Izi zikutanthauza kuti pakachitika chochitika chilichonse (kulephera kwa data center, kusokoneza maukonde, etc.), makina osungira amatha kuchita zofunikira kuti asunge deta. Ndi ma replicas wamba, izi zimachitidwa kwathunthu kapena pang'ono pamanja ndi woyang'anira.
Kodi ndi chiyani?
Cholinga chachikulu chomwe makasitomala amatsata akamagwiritsa ntchito magulu osiyanasiyana a Metro ndikuchepetsa RTO (Recovery Time Objective). Ndiko kuti, kuchepetsa nthawi yomwe imatenga kubwezeretsa ntchito za IT pambuyo polephera. Ndi kubwereza kwachikhalidwe, nthawi yochira idzakhala yayitali kuposa ndi gulu la Metro. Chifukwa chiyani? Ndi zophweka. Woyang'anira ayenera kukhala pamalopo ndikusintha pamanja kubwereza, pomwe gulu la Metro limachita izi zokha.
Ngati mulibe woyang'anira wodzipereka pantchito yemwe samagona, kudya, kusuta, kapena kudwala, koma amayang'anira momwe malo anu osungira alili 24/7, ndiye kuti palibe njira yotsimikizira kuti woyang'anira adzakhalapo kuti achite kusintha kwamanja pakalephera.
Chifukwa chake, RTO pakalibe gulu la metro kapena woyang'anira wosafa wa 99 pa ntchito adzakhala wofanana ndi kuchuluka kwa nthawi yosinthira machitidwe onse komanso nthawi yayitali yomwe woyang'anira amatsimikiziridwa kuti ayambe kugwira ntchito ndi makina osungira ndi machitidwe oyandikana nawo.
Chifukwa chake, timafika potsimikiza kuti gulu la metro liyenera kugwiritsidwa ntchito ngati chofunikira cha RTO ndi mphindi, osati maola kapena masiku. Izi ndizo, pamene, pakagwa vuto lalikulu la deta, dipatimenti ya IT iyenera kuonetsetsa kuti bizinesiyo ikhoza kubwezeretsanso mwayi wopeza ntchito za IT mkati mwa mphindi, kapena masekondi.
Kodi ntchito?
Pansipa, gulu la metro limagwiritsa ntchito njira yofananira ya data yomwe tidafotokoza m'nkhani yapitayi (onani ). Popeza kubwereza ndikofanana, zofunikira zake zimagwirizana, ndendende:
- fiber optics monga physics, 10 Gigabit Efaneti (kapena apamwamba);
- mtunda pakati pa malo opangira deta siposa makilomita 40;
- kuchedwa kwa njira pakati pa malo opangira data (pakati pa makina osungira) mpaka 5 milliseconds (mokwanira 2).
Zofunikira zonsezi ndi upangiri mwachilengedwe, kutanthauza kuti gulu la metro lipitiliza kugwira ntchito ngakhale izi sizikukwaniritsidwa. Komabe, ziyenera kumveka kuti zotsatira za kusatsatira zofunikirazi ndizofanana ndi kuchepa kwa kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake
Chifukwa chake, chofananira chofananira chimagwiritsidwa ntchito kusamutsa deta pakati pa makina osungira. Koma kodi ma replicas amasintha bwanji, ndipo koposa zonse, kodi kugawanikana kwaubongo kumapewedwa bwanji? Pachifukwa ichi, chinthu chowonjezera - woweruza - chimagwiritsidwa ntchito pamlingo wapamwamba.
Kodi referee amagwira ntchito bwanji ndipo ntchito yake ndi yotani?
Wotsutsana ndi makina ang'onoang'ono a makina kapena gulu la hardware lomwe liyenera kukhazikitsidwa pa malo achitatu (mwachitsanzo, mu ofesi) ndikupatsidwa mwayi wopita kumalo osungiramo zinthu pogwiritsa ntchito ICMP ndi SSH. Akangokhazikitsidwa, woweruzayo ayenera kukhala ndi adilesi ya IP, ndiyeno, kumbali yosungirako, adilesi yake iyenera kufotokozedwa, pamodzi ndi ma adilesi a olamulira akutali omwe akutenga nawo gawo pagulu la metro. Pambuyo pake, woweruzayo ali wokonzeka kugwiritsidwa ntchito.
Woweruzayo amayang'anira mosalekeza machitidwe onse osungira m'gulu la metro, ndipo ngati malo osungira sapezeka, atatsimikizira kusapezeka kwa membala wina wamagulu (mmodzi mwa "machitidwe amoyo" osungira), amasankha kuyambitsa ndondomeko yosinthira malamulo obwerezabwereza ndi mapu.
Mfundo yofunika kwambiri: wotsutsana ayenera kukhala pamalo osiyana ndi omwe ali ndi machitidwe osungiramo zinthu, kutanthauza kuti palibe mu Data Center 1, kumene Storage System 1 ili, kapena mu Data Center 2, kumene Storage System 2 imayikidwa.
Chifukwa chiyani? Chifukwa ndi njira iyi yokha yomwe woweruzayo angagwiritsire ntchito imodzi mwa njira zosungiramo zosungiramo, mosakayikira komanso molondola kudziwa kulephera kwa malo awiriwa. Kuyika kwina kulikonse kwa arbitrator kungayambitse kugawanika kwa ubongo.
Tsopano tiyeni tilowe mu tsatanetsatane wa ntchito ya woweruzayo.
Ntchito zingapo zimayendera pa arbitrator omwe amafufuza mosalekeza owongolera onse osungira. Ngati zotsatira za voti zikusiyana ndi zam'mbuyo (zopezeka / zosapezeka), zimalembedwa ku database yaying'ono, yomwe imagwiranso ntchito pa arbitrator.
Tiyeni tione mwatsatanetsatane ntchito ya woweruzayo mwatsatanetsatane.
Gawo 1. Kuzindikira kusapezeka. Chochitika chomwe chikuwonetsa kulephera kwa dongosolo losungirako ndikusoweka kwa ping kuchokera kwa olamulira onse a makina osungira amodzi kwa masekondi 5.
Gawo 2. Yambani njira yosinthira. Woweruzayo atatsimikiza kuti imodzi mwazosungirako sizikupezeka, imatumiza pempho ku "live" yosungirako dongosolo kuti zitsimikizire kuti "wakufa" wosungirako adafadi.
Pambuyo polandira lamulo loterolo kuchokera kwa arbitrator, dongosolo lachiwiri (lokhala) losungirako limayang'ananso kupezeka kwa dongosolo loyamba lolephera kusungirako ndipo, ngati silikupezeka, limatumiza chitsimikiziro cha kulingalira kwa arbitrator. Zosungirako sizikupezeka.
Atalandira chitsimikiziro ichi, arbitrator amayambitsa kubwereza kubwereza kwakutali ndi mapu obwezeretsa ndondomeko pa zojambula zomwe zinali zogwira ntchito (zoyambirira) pa dongosolo lolephera losungirako, ndikutumiza lamulo ku dongosolo losungirako lachiwiri kuti lipititse patsogolo zojambulazo kuchokera ku sekondale kupita ku pulayimale ndikubwezeretsanso mapu. Dongosolo lachiwiri losungirako limachita izi kenako limapereka mwayi wopeza ma LUN otayika kuchokera kudongosolo lake losungira.
Chifukwa chiyani kutsimikizira kowonjezeraku kuli kofunikira? Za quorum. Ndiko kuti, ambiri mwa chiwerengero chosamvetseka (3) cha mamembala amagulu ayenera kutsimikizira kulephera kwa imodzi mwamagulu amagulu. Pokhapokha pamene chisankhochi chidzakhala cholondola. Izi ndizofunikira kuti mupewe zolakwika zolakwika ndipo, chifukwa chake, kugawanika-ubongo.
Gawo 2 limatenga pafupifupi masekondi a 5-10, kotero, poganizira nthawi yofunikira kuti mudziwe kusapezeka (5 masekondi), mkati mwa masekondi 10-15 pambuyo pa ngozi, LUNs kuchokera kumalo osungiramo pansi adzapezeka kuti agwire ntchito ndi makina osungiramo moyo.
Mwachiwonekere, kuti mupewe kusokonezeka kwa kulumikizana ndi makamu, muyeneranso kuwonetsetsa kuti kutha kwa nthawi kumakonzedwa moyenera pa osunga. Nthawi yomalizira yovomerezeka ndi masekondi 30. Izi zidzalepheretsa wolandirayo kuti asatuluke ku malo osungiramo katundu panthawi yonyamula katundu pakagwa tsoka ndipo adzaonetsetsa kuti I / O isasokonezedwe.
Dikirani kamphindi, ndiye ngati zonse zili bwino ndi gulu la metro, chifukwa chiyani timafunikira kubwereza pafupipafupi?
Ndipotu, zonse sizophweka.
Tiyeni tiwone zabwino ndi zoyipa za gulu la metro
Chifukwa chake, tidazindikira kuti zabwino zodziwikiratu zamagulu a metro poyerekeza ndi kubwereza wamba ndi:
- Zodzichitira zonse zimatsimikizira nthawi yochepa yochira pakagwa tsoka;
- Ndipo ndizo zonse :-).
Tsopano, tcherani khutu, zovuta zake:
- Mtengo Wothetsera. Ngakhale gulu la metro mu machitidwe a Aerodisk silifuna chilolezo chowonjezera (chilolezo chomwechi chimagwiritsidwa ntchito pofananiza), mtengo wa yankho udzakhalabe wapamwamba kuposa kugwiritsa ntchito kubwereza kofanana. Zofunikira zonse zofananira zofananira ziyenera kukhazikitsidwa, kuphatikiza zofunikira zamagulu a metro zolumikizidwa ndikusintha kowonjezera ndi malo owonjezera (onani mapulani a magulu a metro).
- Kuvuta kwa yankho. Gulu la metro ndi lovuta kwambiri kuposa momwe limafananira ndipo limafunikira chidwi komanso khama pokonzekera, kukonza, ndi zolemba.
Potsirizira pake. Metrocluster ndi njira yotsogola kwambiri komanso yabwino mukafuna kutsimikizira RTO mumasekondi kapena mphindi. Koma ngati kufunikira kotereku kulibe, ndipo RTO ya maola ndi yovomerezeka ku bizinesi, ndiye kuti palibe chifukwa chowombera mpheta ndi cannon. Muyezo, kubwereza kwa manja ndikokwanira, chifukwa gulu la metro lingaphatikizepo ndalama zowonjezera komanso zovuta za zomangamanga za IT.
Kukonzekera kwamagulu a Metro
Gawoli silinapangidwe kuti likhale chiwongolero chokwanira cha mapangidwe a magulu a metro, koma m'malo mwake ndikuwunikira madera ofunika kuwaganizira ngati mwaganiza zopanga dongosolo lotere. Chifukwa chake, mukakhazikitsa gulu la metro, onetsetsani kuti mwalumikizana ndi wopanga makina osungira (ife) ndi machitidwe ena okhudzana nawo.
Masamba
Monga tafotokozera pamwambapa, gulu la metro limafuna malo osachepera atatu: malo awiri osungiramo deta komwe malo osungiramo zinthu ndi machitidwe okhudzana nawo adzagwira ntchito, ndi malo achitatu kumene wotsutsa adzagwira ntchito.
Mtunda wovomerezeka pakati pa malo opangira data ndi osapitilira makilomita 40. Mtunda wokulirapo ukhoza kuyambitsa kuchedwa kwina, komwe kumakhala kosafunikira kwambiri pagulu la metro. Monga chikumbutso, latency iyenera kukhala pansi pa 5 milliseconds, ngakhale 2 ndi yabwino.
Ndibwino kuti muyang'anenso kuchedwa panthawi yakukonzekera. Wothandizira aliyense wodziwika yemwe amapereka ma fiber optics pakati pa malo opangira data amatha kukonza mayeso apamwamba kwambiri mwachangu.
Ponena za kuchedwa kwa arbitrator (ndiko kuti, pakati pa tsamba lachitatu ndi awiri oyambirira), njira yochepetsera yomwe ikulimbikitsidwa ndi 200 milliseconds, kutanthauza kuti mgwirizano wokhazikika wa VPN pa intaneti udzakhala woyenera.
Kusintha ndi ma network
Mosiyana ndi ndondomeko yobwerezabwereza, yomwe imangogwirizanitsa machitidwe osungiramo malo osiyanasiyana, ndondomeko yamagulu a metro imafuna makamu kuti agwirizane ndi machitidwe onse osungira kumalo osiyanasiyana. Kuti afotokoze kusiyana, ziwembu zonse ziwiri zikuwonetsedwa pansipa.
Monga momwe mukuonera pa chithunzichi, makamu ku Site 1 amawona zonse Zosungirako Zosungirako 1 ndi Zosungirako Zosungirako 2. Mosiyana ndi zimenezi, omwe ali pa Site 2 amawona zonse Zosungirako Zosungirako 2 ndi Zosungirako Zosungirako 1. Mwa kuyankhula kwina, wolandira aliyense amawona machitidwe onse osungira. Izi ndizofunikira kuti gulu la Metro lizigwira ntchito.
Zachidziwikire, palibe chifukwa chowonjezera wolandila aliyense kudzera pa chingwe cha fiber optic kupita ku data ina; palibe kuchuluka kwa madoko kapena zingwe kudzakwanira. Maulumikizidwe onsewa ayenera kupangidwa kudzera pa Ethernet 10G + kapena FibreChannel 8G + masiwichi (FC okhawo olumikizira makamu ndi makina osungira a IO; njira yobwereza ikupezeka kudzera pa IP (Ethernet 10G + +).
Tsopano mawu ochepa okhudza network topology. Kusintha koyenera kwa subnet ndikofunikira. Ndikofunikira kutanthauzira ma subnet angapo amitundu yamagalimoto awa:
- Subnet yobwerezabwereza, yomwe idzagwirizanitsa deta pakati pa makina osungira. Pakhoza kukhala angapo, koma mu nkhani iyi, zilibe kanthu; chirichonse chimadalira pakali pano (yakhazikitsidwa kale) topology ya intaneti. Ngati pali awiri, ndiye kuti njira pakati pawo mwachiwonekere iyenera kukonzedwa;
- Ma subnets osungira omwe makamu amapeza zosungirako (ngati iSCSI). Payenera kukhala subnet imodzi yotere mu data center iliyonse;
- Ma subnets oyang'anira, ndiye kuti, ma subnets atatu oyendetsedwa pamasamba atatu omwe makina osungira amayendetsedwa, ndipo woweruzayo ali pamenepo.
Sitiganizira za ma subnets kuti tipeze zopezera zopezera pano, chifukwa zimadalira kwambiri ntchito.
Kulekanitsa magalimoto osiyanasiyana kukhala ma subnet osiyanasiyana ndikofunikira (makamaka kulekanitsa zofananira kuchokera ku I/O), popeza kusakaniza magalimoto onse kukhala gawo limodzi "lokhuthala" kumapangitsa kuti zikhale zosatheka kuyang'anira, komanso m'malo okhala ndi ma datacenter awiri, izi zitha kuyambitsanso mitundu yosiyanasiyana ya ma network. Sitidzafufuza mozama nkhaniyi m'nkhani ino, monga kukonzekera maukonde anatambasula malo deta angapezeke mwatsatanetsatane pa chuma cha opanga maukonde zida.
Kukonzekera kwa Arbitrator
Wotsutsana ayenera kupatsidwa mwayi wopita ku malo onse osungirako zosungirako kudzera pa ICMP ndi SSH. Kulekerera kolakwa kwa woweruza kuyeneranso kuganiziridwa. Pali chenjezo apa.
Kulephera kwa woweruza ndikofunikira kwambiri, koma sikofunikira. Kodi chingachitike ndi chiyani ngati woweruzayo agwa pa nthawi yolakwika?
- Kugwira ntchito kwa metro cluster sikungasinthe, chifukwa woweruzayo alibe mphamvu pakugwira ntchito kwa metro cluster (ntchito yake ndikusintha katundu munthawi yake pakati pa malo opangira data).
- Komanso, ngati arbitrator alephera pazifukwa zilizonse ndikuphonya kulephera kwa data center, palibe switchover yomwe idzachitika chifukwa palibe amene adzatha kupereka malamulo ofunikira osinthira kapena kukhazikitsa quorum. Pamenepa, gulu la metro lidzasinthidwa kukhala njira yobwerezabwereza, yomwe iyenera kusinthidwa pamanja pakagwa tsoka, zomwe zidzakhudza RTO.
Chotsatira pa izi? Ngati RTO yochepera ikufunikadi, woweruzayo ayenera kukhala wololera zolakwa. Pali njira ziwiri za izi:
- Thamangani makina enieni okhala ndi arbitrator pa hypervisor yolekerera zolakwika, popeza ma hypervisors onse okhwima amathandizira kulolerana kolakwa;
- Ngati ndinu waulesi kwambiri kukhazikitsa gulu loyenera pamalo achitatu (mu ofesi wamba) ndipo mulibe gulu la hypervisor lomwe lilipo, tapereka njira yothanirana ndi hardware, yomwe imakhala mu bokosi la 2U lomwe limakhala ndi ma seva awiri okhazikika a x86 ndipo amatha kupulumuka kulephera kwanuko.
Tikukulimbikitsani kuwonetsetsa kuti woweruzayo akulekerera zolakwika, ngakhale gulu la metro silifunikira pakuchita bwino. Komabe, monga momwe malingaliro ndi machitidwe amasonyezera, pomanga malo odalirika, opirira masoka, ndi bwino kukhala otetezeka kusiyana ndi chisoni. Ndibwino kuti mudziteteze nokha ndi bizinesi yanu ku "Lamulo la Murphy," ndiko kuti, kuchokera ku kulephera kwa nthawi imodzi kwa otsutsana ndi amodzi mwa malo omwe ali ndi makina osungira.
Zomangamanga zothetsera
Poganizira zofunikira pamwambapa, timapeza njira zomangira zotsatirazi.
Ma LUN ayenera kugawidwa mofanana pamasamba awiriwa kuti asachuluke kwambiri. Panthawi imodzimodziyo, poyesa malo onse a deta, musaganizirenso kuwirikiza kawiri (komwe kumafunika kusunga deta nthawi imodzi pazigawo ziwiri zosungiramo), komanso kuwirikiza kawiri machitidwe a IOPS ndi MB / s kuti ateteze kuwonongeka kwa ntchito pakagwa kulephera mu malo amodzi a deta.
Ndizofunikira kudziwa kuti ndi njira yoyenera yopangira kukula (ndiko kuti, ngati tapereka malire oyenerera apamwamba a IOPS ndi MB/s, komanso zofunikira za CPU ndi RAM), ngati imodzi mwazinthu zosungirako m'gulu la metro ikalephera, sipadzakhala kutsika kwakukulu kwa magwiridwe antchito mukangoyendetsa pakanthawi kosungirako.
Izi zikufotokozedwa ndi mfundo yakuti pamene malo awiri akuyenda nthawi imodzi, kubwereza kofanana kumawononga theka la ntchito yolemba, popeza ntchito iliyonse iyenera kulembedwa ku machitidwe awiri osungira (ofanana ndi RAID-1 / 10). Choncho, ngati imodzi mwa njira zosungiramo zosungirako ikulephera, zotsatira za kubwerezabwereza zimasowa kwakanthawi (mpaka dongosolo lolephera kusungirako libwezeretsedwa), ndipo timalandira kuwonjezeka kawiri pa kulemba. Pambuyo pa LUNs zolephera zosungirako zosungirako zimayambiranso pa ntchito yosungiramo ntchito, kuwonjezeka kumeneku kuwirikiza kawiri kumasowa chifukwa cha katundu kuchokera ku LUNs zosungirako zina, ndipo timabwereranso ku mlingo womwewo womwe tinali nawo musanayambe "kulephera," koma tsopano mkati mwa malo amodzi.
Ndi kukula koyenera, mutha kuwonetsetsa kuti ogwiritsa ntchito sangazindikire kulephera kwa dongosolo lonse losungirako. Koma kachiwiri, izi zimafuna kusamala kwambiri, zomwe, mwa njira, mutha kulumikizana nafe kwaulere :-).
Kupanga gulu la metro
Kukhazikitsa gulu la metro ndikofanana kwambiri ndi kukhazikitsa kubwereza pafupipafupi, komwe tidafotokozeramo Chifukwa chake, tingoyang'ana pazosiyana. Tinakhazikitsa makonzedwe a labu pogwiritsa ntchito zomangamanga pamwambapa, koma muzowonongeka pang'ono: machitidwe awiri osungira omwe amagwirizanitsidwa kudzera pa 10G Ethernet, mawotchi awiri a 10G, ndi gulu limodzi lomwe limapeza machitidwe onse osungiramo ma doko a 10G kupyolera mu kusintha. The arbitrator amayendetsa pa makina enieni.
Mukakonza ma IP (VIPs) a chofananira, muyenera kusankha mtundu wa VIP - pagulu la metro.
Tinapanga maulalo obwerezabwereza a ma LUN awiri ndikuwagawa pamakina awiri osungira: LUN TEST Primary pa system yosungirako 1 (METRO link), LUN TEST2 Primary for storage system 2 (METRO2 link).
Tinawakonzera zolinga ziwiri zofanana (kwa ife, iSCSI, koma FC imathandizidwanso, malingaliro osinthika ndi ofanana).
SHD1:
SHD2:
Pamalumikizidwe obwerezabwereza, mapu adapangidwa pamakina aliwonse osungira.
SHD1:
SHD2:
Tidapanga multipath ndikuzipereka kwa wolandila.
Kupanga arbitrator
Palibe chapadera chochita ndi woweruzayo. Ingoyambitsani patsamba lachitatu, perekani adilesi ya IP, ndikusintha mwayi wa ICMP ndi SSH. Kukonzekera kokha kumachitidwa kuchokera ku machitidwe osungira okha. Wotsutsana amangofunika kukonzedwa kamodzi pa olamulira aliwonse osungirako m'gulu la metro; Zokonda izi zidzafalitsidwa kwa olamulira onse.
Mugawo la Remote Replication >> Metrocluster (pa wolamulira aliyense) >> "Sinthani" batani.
Timalowetsa adilesi ya IP ya arbitrator, komanso mawonekedwe owongolera a olamulira awiri akutali.
Pambuyo pake, muyenera kuyatsa ntchito zonse (dinani batani "Yambitsaninso Zonse"). Ngati mukufuna kukonzanso dongosolo mtsogolomu, muyenera kuyambitsanso mautumiki kuti zosinthazo zigwire ntchito.
Timayang'ana kuti mautumiki onse akuyenda.
Izi zimamaliza kukhazikitsa magulu a metro.
Mayeso owonongeka
Kuyesa kwangozi kwa ife kudzakhala kosavuta komanso kwachangu, popeza magwiridwe antchito (kusintha, kusasinthika, etc.) adakambidwa mu Chifukwa chake, kuyesa kudalirika kwa gulu la metro, timangofunika kutsimikizira zodziwikiratu zodziwira ngozi, kusintha, komanso kusakhalapo kwa zotayika zolembera (zolowera / zotulutsa).
Kuti tichite izi, timayerekezera kulephera kwathunthu kwa imodzi mwazosungirako mwa kutseka mwakuthupi olamulira ake onse, titangoyamba kukopera fayilo yaikulu ku LUN, yomwe iyenera kutsegulidwa pa njira ina yosungirako.
Timatseka njira imodzi yosungirako. Pa dongosolo lachiwiri losungirako, tikuwona machenjezo ndi mauthenga olembera omwe amasonyeza kuti kugwirizana ndi dongosolo loyandikana nalo latayika. Ngati zidziwitso zowunikira za SMTP kapena SNMP zisinthidwa, woyang'anira alandila zidziwitso zofananira.
Masekondi 10 ndendende pambuyo pake (zowoneka m'zithunzi zonse ziwiri), ulalo wobwereza wa METRO (umene unali Pulayimale pamakina osungira olephera) adangokhala Pulayimale pamakina osungira ogwirira ntchito. Pogwiritsa ntchito mapu omwe alipo, LUN TEST idakhalabe yofikirika kwa wolandirayo; akulemba adatsika pang'ono (mkati mwa 10 peresenti yolonjezedwa), koma sanasokonezedwe.
Mayeso anamalizidwa bwino.
Mwachidule
Kukhazikitsidwa kwatsopano kwa gulu la metro mu makina osungiramo a AERODISK Engine N-mndandanda kumathana ndi zovuta zomwe zimafuna kuthetsa kapena kuchepetsa nthawi yochepetsera ntchito ya IT ndikuwonetsetsa kuti 24/7/365 ikugwira ntchito ndi ndalama zochepa zogwirira ntchito.
Zoonadi, munganene kuti zonsezi ndi malingaliro chabe, mikhalidwe yabwino ya labu, ndi zina zotero ... KOMA tili ndi mapulojekiti angapo omwe tamaliza omwe takhazikitsa ntchito yopulumutsa masoka, ndipo machitidwe akugwira ntchito bwino. Mmodzi mwa makasitomala athu odziwika bwino, omwe amagwiritsa ntchito njira ziwiri zosungirako zosungirako zowonongeka, adavomereza kale kufalitsa zambiri za polojekitiyi, kotero mu gawo lotsatira, tidzakambirana za kukhazikitsa moyo.
Zikomo, tikuyembekezera kukambirana kopindulitsa.
Source: www.habr.com
