Injin AERODISK: Juriyar Bala'i. Kashi na 2. Metrocluster

Sannu, masu karatun Habr! A cikin labarin da ya gabata, mun yi magana game da hanya mai sauƙi na dawo da bala'i a cikin tsarin ajiya na AERODISK ENGINE - maimaitawa. A cikin wannan labarin, za mu nutse cikin wani abu mai rikitarwa da ban sha'awa - metrocluster, wato, hanyar kariya ta atomatik don cibiyoyin bayanai guda biyu, barin cibiyoyin bayanai suyi aiki a cikin yanayin aiki mai aiki. Za mu gaya muku, nuna muku, karya shi kuma gyara shi.

Kamar yadda aka saba, ka'idar farko

Metrocluster wani gungu ne wanda aka bazu a cikin shafuka da yawa a cikin birni ko yanki. Kalmar “cluster” tana nuna mana a sarari cewa hadaddun yana sarrafa kansa, wato, sauya nodes na cluster a yayin faɗuwa yana faruwa ta atomatik.

Wannan shine inda babban bambanci tsakanin metrocluster da kwafi na yau da kullun ya ta'allaka ne. Automation na ayyuka. Wato, idan akwai wasu abubuwan da suka faru (rashin cibiyar bayanai, tashoshi masu karye, da sauransu), tsarin ajiya zai aiwatar da ayyukan da suka wajaba da kansa don kiyaye wadatar bayanai. Lokacin amfani da kwafi na yau da kullun, waɗannan ayyukan ana yin su gaba ɗaya ko wani yanki da hannu ta mai gudanarwa.

Menene wannan don?

Babban burin da abokan ciniki ke bi yayin amfani da wasu abubuwan aiwatarwa na metrocluster shine rage RTO (Manufar Lokacin Farfadowa). Wato, don rage lokacin dawo da ayyukan IT bayan gazawar. Idan kayi amfani da maimaitawa na yau da kullun, lokacin dawowa koyaushe zai fi tsayi fiye da lokacin dawowa tare da metrocluster. Me yasa? Mai sauqi qwarai. Dole ne mai gudanarwa ya kasance a teburinsa kuma ya canza maimaitawa da hannu, kuma metrocluster yana yin haka ta atomatik.

Idan ba ku da ma'aikacin da ke aiki wanda ba ya barci, ba ya cin abinci, ba ya shan taba ko rashin lafiya, kuma yana kallon yanayin tsarin ajiya na sa'o'i 24 a rana, to babu wata hanya ta tabbatar da cewa mai gudanarwa zai yi. kasancewa don sauyawa da hannu yayin gazawa.

Saboda haka, RTO idan babu metrocluster ko mai kula da mara mutuwa na matakin 99th na sabis na aikin gudanarwa zai kasance daidai da jimlar lokacin sauyawa na duk tsarin da matsakaicin lokacin da aka ba da tabbacin mai gudanarwa ya fara aiki. tare da tsarin ajiya da tsarin da ke da alaƙa.

Don haka, mun zo ga ƙarshe cewa ya kamata a yi amfani da metrocluster idan abin da ake buƙata don RTO minti ne, ba sa'o'i ko kwanaki ba. don mayar da damar zuwa IT -sabis a cikin mintuna, ko ma daƙiƙa.

Yaya ta yi aiki?

A ƙasan matakin, metrocluster yana amfani da tsarin don kwafin bayanai na aiki tare, wanda muka bayyana a labarin da ya gabata (duba. mahada). Tunda maimaitawa yayi aiki tare, buƙatunsa sun yi daidai, ko kuma:

• fiber na gani kamar kimiyyar lissafi, 10 gigabit Ethernet (ko mafi girma);
• nisa tsakanin cibiyoyin bayanai bai wuce kilomita 40 ba;
• Jinkirin tashar tashoshi mai gani tsakanin cibiyoyin bayanai (tsakanin tsarin ajiya) ya kai millise seconds 5 (mafi dacewa 2).

Duk waɗannan buƙatun suna ba da shawara a cikin yanayi, wato, metrocluster zai yi aiki ko da waɗannan buƙatun ba su cika ba, amma dole ne mu fahimci cewa sakamakon rashin bin waɗannan buƙatun daidai yake da raguwar aiki na duka tsarin ajiya a ciki. metrocluster.

Don haka, ana amfani da kwafi na aiki tare don canja wurin bayanai tsakanin tsarin ajiya, kuma ta yaya kwafi suke canzawa ta atomatik kuma, mafi mahimmanci, ta yaya ake guje wa tsaga-kwakwalwa? Don yin wannan, a matakin mafi girma, ana amfani da ƙarin mahalli - mai yanke hukunci.

Yaya mai sasantawa ke aiki kuma menene aikinsa?

Mai sasantawa ƙaramin inji ne ko gungun kayan masarufi wanda dole ne a ƙaddamar da shi a shafi na uku (misali, a ofis) kuma ya ba da damar shiga tsarin ajiya ta hanyar ICMP da SSH. Bayan ƙaddamarwa, mai yanke hukunci ya kamata ya saita IP, sannan daga gefen ajiya ya nuna adireshinsa, da adiresoshin masu kula da nesa waɗanda ke shiga cikin metrocluster. Bayan wannan, alkalin wasa ya shirya don yin aiki.

Mai yanke hukunci koyaushe yana lura da duk tsarin ajiya a cikin metrocluster kuma idan babu wani tsarin ajiya na musamman, bayan tabbatar da rashin samuwa daga wani memba na tari (ɗaya daga cikin tsarin ajiyar “rayuwa”), ya yanke shawarar ƙaddamar da hanyar don canza dokokin kwafi. da taswira.

Batu mai mahimmanci. Dole ne a koyaushe mai sasantawa ya kasance a wurin da ya bambanta da waɗanda tsarin ajiya suke, wato, ba a cikin cibiyar bayanai 1 ba, inda aka shigar da tsarin ajiya na 1, ko kuma a cibiyar bayanai 2, inda ake shigar da tsarin ajiya na 2.

Me yasa? Domin wannan ita ce hanya daya tilo da mai sasantawa, tare da taimakon daya daga cikin na’urorin ajiya da suka tsira, ba tare da wata shakka da kuma daidai ba, zai iya tantance faɗuwar kowane rukunin yanar gizo guda biyu da aka shigar da na’urorin ajiya. Duk wasu hanyoyin sanya mai sasantawa na iya haifar da rarrabuwar kawuna.

Yanzu bari mu nutse cikin cikakkun bayanai game da aikin mai sasantawa.

Mai sasantawa yana gudanar da ayyuka da yawa waɗanda koyaushe ke yin zaɓe ga duk masu sarrafa ajiya. Idan sakamakon zaben ya bambanta da na baya (akwai/babu), to ana rubuta shi a cikin ƙaramin rumbun adana bayanai, wanda kuma ke aiki akan mai yanke hukunci.

Bari mu dubi dabarar aikin mai sasantawa dalla-dalla.

Mataki 1: Ƙayyade rashin samuwa. Matsalar gazawar tsarin ajiya shine rashin ping daga duka masu kula da tsarin ajiya iri ɗaya a cikin daƙiƙa 5.

Mataki 2. Fara tsarin sauyawa. Bayan mai yanke hukunci ya gane cewa ɗaya daga cikin tsarin ajiya ba ya samuwa, sai ya aika da buƙatu zuwa tsarin ajiyar "rayuwa" don tabbatar da cewa tsarin ajiyar "matattu" ya mutu da gaske.

Bayan samun irin wannan umarni daga arbiter, na biyu (rayuwa) na tsarin ma'ajiyar bugu da žari yana bincikar samuwar tsarin ajiyar farko da ya fado, idan kuma babu shi, ya aika da tabbaci ga wanda ya yi zato. Lallai babu tsarin ajiya.

Bayan samun irin wannan tabbaci, arbiter ya ƙaddamar da hanya mai nisa don canza kwafi da haɓaka taswira akan waɗancan kwafin waɗanda suke aiki (na farko) akan tsarin ajiya da ya faɗi, kuma ya aika da umarni zuwa tsarin ajiya na biyu don canza waɗannan kwafin daga sakandare zuwa firamare da tada taswira. To, tsarin ajiya na biyu, don haka, yana aiwatar da waɗannan hanyoyin, sa'an nan kuma yana ba da damar yin amfani da LUNs da suka ɓace daga kanta.

Me yasa ake buƙatar ƙarin tabbaci? Domin kuri'a. Wato, galibin adadin gungun mambobi masu banƙyama (3) dole ne su tabbatar da faɗuwar ɗayan kuɗaɗen tari. Daga nan ne kawai wannan shawarar za ta zama daidai. Wannan ya zama dole don guje wa sauyawa mara kyau kuma, bisa ga haka, rarrabuwar kwakwalwa.

Lokaci mataki na 2 yana ɗaukar kusan 5 - 10 seconds, don haka, la'akari da lokacin da ake buƙata don ƙayyade rashin samuwa (5 seconds), a cikin 10 - 15 seconds bayan hadarin, LUNs daga tsarin ajiya da ya fadi zai kasance ta atomatik don yin aiki tare da masu rai. tsarin ajiya.

A bayyane yake cewa don guje wa rasa haɗin gwiwa tare da runduna, kuna buƙatar kulawa don daidaita lokacin da aka yi daidai a kan runduna. Shawarar lokacin ƙarewar shine aƙalla daƙiƙa 30. Wannan zai hana mai watsa shiri ya yanke haɗin kai zuwa tsarin ajiya a lokacin da ake canza kaya a yayin da wani bala'i ya faru kuma zai iya tabbatar da cewa babu wani katsewar I / O.

Jira na biyu, ya bayyana cewa idan komai yana da kyau tare da metrocluster, me yasa muke buƙatar kwafi na yau da kullun kwata-kwata?

A gaskiya, duk abin ba haka ba ne mai sauƙi.

Bari mu yi la'akari da ribobi da fursunoni na metrocluster

Don haka, mun gane cewa fa'idodin metrocluster a bayyane idan aka kwatanta da kwafi na al'ada sune:

• Cikakken aiki da kai, yana tabbatar da ƙarancin lokacin dawowa yayin bala'i;
• Shi ke nan :-).

Kuma yanzu, hankali, da fursunoni:

• Farashin maganin. Kodayake metrocluster a cikin tsarin Aerodisk baya buƙatar ƙarin lasisi (ana amfani da lasisi iri ɗaya kamar na kwafi), farashin maganin zai kasance har yanzu ya fi yin amfani da kwafin aiki tare. Kuna buƙatar aiwatar da duk buƙatun don kwafin aiki tare, da buƙatun metrocluster mai alaƙa da ƙarin sauyawa da ƙarin rukunin yanar gizo (duba shirin metrocluster);
• Complexity na maganin. Metrocluster ya fi rikitarwa fiye da kwafi na yau da kullun, kuma yana buƙatar ƙarin kulawa da ƙoƙari don tsarawa, daidaitawa da takaddun bayanai.

A ƙarshe. Metrocluster tabbas ingantaccen fasaha ne kuma ingantaccen bayani lokacin da kuke buƙatar samar da RTO a cikin daƙiƙa ko mintuna. Amma idan babu irin wannan aiki, kuma RTO a cikin sa'o'i yana da kyau don kasuwanci, to babu ma'ana a harbi sparrows daga cannon. Maimaita ma'aikaci da baƙauye na yau da kullun ya isa, tunda tarin metro zai haifar da ƙarin farashi da rikitarwa na kayan aikin IT.

Shirye-shiryen Metrocluster

Wannan sashe baya da'awar zama cikakken jagora ga ƙirar metrocluster, amma kawai yana nuna mahimman kwatance waɗanda yakamata a yi aiki idan kun yanke shawarar gina irin wannan tsarin. Sabili da haka, lokacin aiwatar da metrocluster a zahiri, tabbatar da haɗawa da masana'anta tsarin ajiya (wato, mu) da sauran tsarin da ke da alaƙa don shawarwari.

Kayan aiki

Kamar yadda aka fada a sama, metrocluster yana buƙatar mafi ƙarancin shafuka uku. Cibiyoyin bayanai guda biyu inda tsarin ajiya da tsarin da ke da alaƙa za su yi aiki, da kuma wuri na uku inda mai sasantawa zai yi aiki.

Nisan da aka ba da shawarar tsakanin cibiyoyin bayanai bai wuce kilomita 40 ba. Nisa mafi girma yana iya haifar da ƙarin jinkiri, wanda a cikin yanayin metrocluster ba a so sosai. Bari mu tunatar da ku cewa jinkiri ya kamata ya kasance har zuwa 5 millise seconds, kodayake yana da kyau a kiyaye su cikin 2.

Ana ba da shawarar duba jinkiri kuma yayin aikin tsarawa. Duk wani balagagge mai balagagge ko žasa wanda ke ba da fiber na gani tsakanin cibiyoyin bayanai na iya tsara ingantaccen bincike cikin sauri.

Amma game da jinkiri a gaban mai sasantawa (wato, tsakanin rukunin yanar gizo na uku da biyu na farko), iyakar jinkirin da aka ba da shawarar ya kai mil 200, wato, haɗin VPN na yau da kullun akan Intanet ya dace.

Canjawa da Sadarwar Sadarwa

Ba kamar tsarin kwafi ba, inda ya isa ya haɗa tsarin ajiya daga shafuka daban-daban, tsarin metrocluster yana buƙatar haɗa runduna tare da tsarin ajiya duka a shafuka daban-daban. Don bayyana abin da bambanci yake, an nuna duka makircinsu a ƙasa.

Kamar yadda ake iya gani daga zane, rukunin yanar gizon mu na 1 suna kallon tsarin ajiya 1 da tsarin ajiya 2. Har ila yau, akasin haka, rukunin yanar gizon 2 suna kallon tsarin ajiya 2 da tsarin ajiya 1. Wato, kowane mai watsa shiri yana ganin tsarin ajiya guda biyu. Wannan shine abin da ake buƙata don aikin metrocluster.

Tabbas, babu buƙatar haɗa kowane mai watsa shiri tare da igiyar gani zuwa wata cibiyar bayanai; babu tashar jiragen ruwa ko igiyoyi da zasu isa. Duk waɗannan haɗin gwiwar dole ne a yi su ta hanyar Ethernet 10G + ko FibreChannel 8G + masu sauyawa (FC kawai don haɗa runduna da tsarin ajiya don IO, tashar maimaitawa a halin yanzu tana samuwa ta hanyar IP (Ethernet 10G+).

Yanzu 'yan kalmomi game da topology na cibiyar sadarwa. Wani muhimmin batu shine daidaitaccen tsari na subnets. Wajibi ne a ayyana maɓalli da yawa nan da nan don nau'ikan zirga-zirga masu zuwa:

• Subnet ɗin kwafi akan abin da za a daidaita bayanai tsakanin tsarin ajiya. Akwai iya zama da yawa daga cikinsu, a cikin wannan yanayin ba kome ba, duk ya dogara da halin yanzu (wanda aka riga aka aiwatar) topology na cibiyar sadarwa. Idan akwai biyu daga cikinsu, to a fili dole ne a daidaita hanyar zirga-zirga a tsakanin su;
• Rukunin ma'ajiya ta hanyar da runduna za su sami damar albarkatun ajiya (idan iSCSI ne). Ya kamata a sami irin wannan subnet a kowace cibiyar bayanai;
• Sarrafa hanyoyin sadarwa, wato, rukunonin rukunoni guda uku masu iya aiki akan rufuna uku waɗanda ake sarrafa na'urorin ajiya daga gare su, kuma mai yanke hukunci yana nan a can.

Ba ma la'akari da subnets don samun damar albarkatun mai masauki a nan, tunda sun dogara sosai akan ayyukan.

Rarraba zirga-zirgar zirga-zirgar zirga-zirgar ababen hawa daban-daban a cikin maɓalli daban-daban yana da matukar mahimmanci (yana da mahimmanci musamman don raba kwafin daga I/O), saboda idan kun haɗu da duk zirga-zirgar ababen hawa zuwa cikin rukunin "kauri" ɗaya, to wannan zirga-zirgar ba zai yuwu a sarrafa ba, kuma a cikin Yanayin cibiyoyin bayanai guda biyu wannan na iya haifar da zaɓuɓɓukan karo na cibiyar sadarwa daban-daban. Ba za mu zurfafa cikin wannan batu ba a cikin tsarin wannan labarin, tun da za ku iya karanta game da tsara tsarin hanyar sadarwa da aka shimfiɗa tsakanin cibiyoyin bayanai kan albarkatun masana'antun kayan aikin cibiyar sadarwa, inda aka kwatanta wannan dalla-dalla.

Tsarin daidaitawa

Dole ne mai yanke hukunci ya ba da dama ga duk mu'amalar gudanarwa na tsarin ajiya ta hanyar ka'idojin ICMP da SSH. Hakanan yakamata kuyi tunani game da gazawar mai sasantawa. Akwai nuance a nan.

Rashin nasarar arbiter yana da matuƙar kyawawa, amma ba a buƙata ba. Me zai faru idan alkalin wasa ya yi karo a lokacin da bai dace ba?

• Ayyukan metrocluster a yanayin al'ada ba zai canza ba, saboda arbtir ba shi da wani tasiri a kan aikin metrocluster a yanayin al'ada (aikinsa shine canza kaya tsakanin cibiyoyin bayanai a kan lokaci)
• Bugu da ƙari, idan mai yanke hukunci saboda dalili ɗaya ko wani ya faɗi kuma "ya yi barci ta hanyar" wani hatsari a cikin cibiyar bayanai, to babu wani canji da zai faru, saboda ba za a sami wanda zai ba da umarnin sauya da ya dace ba kuma ya tsara adadin kuɗi. A wannan yanayin, metrocluster zai zama tsari na yau da kullun tare da maimaitawa, wanda dole ne a canza shi da hannu yayin bala'i, wanda zai shafi RTO.

Menene ya biyo baya daga wannan? Idan da gaske kuna buƙatar tabbatar da mafi ƙarancin RTO, kuna buƙatar tabbatar da mai yanke hukunci ya jure laifi. Akwai zaɓuɓɓuka biyu don wannan:

• Kaddamar da injin kama-da-wane tare da mai yanke hukunci a kan hypervisor mai haƙuri mai laifi, an yi sa'a duk manyan hypervisors na goyan bayan haƙurin kuskure;
• Idan a rukunin yanar gizo na uku (a cikin ofishi na al'ada) kun kasance ma kasala don shigar da gungu na al'ada kuma babu wani gungu na hypervozor da ke akwai, to mun samar da sigar kayan masarufi na arbiter, wanda aka yi a cikin akwatin 2U wanda talakawa biyu ke ciki. x-86 sabobin suna aiki kuma waɗanda zasu iya tsira daga gazawar gida.

Muna ba da shawarar sosai don tabbatar da haƙurin kuskuren mai yanke hukunci, duk da cewa metrocluster baya buƙatar shi a yanayin al'ada. Amma kamar yadda duka ka'idar da aiki suka nuna, idan kun gina ingantaccen ingantaccen abin dogaro da bala'i, to yana da kyau a yi wasa da shi lafiya. Yana da kyau ku kare kanku da kasuwancin ku daga "dokar ta'addanci," wato, daga gazawar masu sasantawa da kuma ɗaya daga cikin wuraren da tsarin ajiya yake.

Magani gine-gine

Yin la'akari da buƙatun da ke sama, muna samun tsarin gine-gine na gabaɗaya.

Yakamata a rarraba LUNs daidai gwargwado a wurare biyu don gujewa wuce gona da iri. A lokaci guda, lokacin girma a cikin cibiyoyin bayanai guda biyu, ya kamata ku haɗa ba kawai ƙarar ninki biyu ba (wanda ke da mahimmanci don adana bayanai lokaci guda akan tsarin ajiya guda biyu), amma har sau biyu aiki a cikin IOPS da MB / s don hana lalata aikace-aikacen a ciki. al'amarin gazawar daya daga cikin cibiyoyin bayanai. ov.

Na dabam, mun lura cewa tare da tsarin da ya dace don daidaitawa (wato, idan har mun samar da iyakar iyakar IOPS da MB/s, da kuma abubuwan da ake bukata na CPU da RAM), idan ɗaya daga cikin tsarin ajiya a cikin Tarin metro ya gaza, ba za a sami faɗuwar aiki mai tsanani ba a ƙarƙashin yanayin aiki na ɗan lokaci akan tsarin ajiya ɗaya.

An bayyana wannan ta gaskiyar cewa lokacin da shafuka guda biyu ke aiki a lokaci ɗaya, kwafin aiki tare "ci" rabin aikin rubutawa, tun da kowane ma'amala dole ne a rubuta shi zuwa tsarin ajiya guda biyu (mai kama da RAID-1/10). Don haka, idan ɗaya daga cikin tsarin ajiya ya gaza, tasirin kwafi na ɗan lokaci (har sai tsarin ajiyar da ya gaza ya dawo) ya ɓace, kuma muna samun ƙaruwa sau biyu a aikin rubutu. Bayan an sake kunna LUNs na tsarin ajiya wanda ya kasa aiki akan tsarin ajiya mai aiki, wannan haɓaka mai ninki biyu yana ɓacewa saboda gaskiyar cewa lodi yana fitowa daga LUNs na sauran tsarin ajiya, kuma muna komawa daidai matakin aikin da muke da shi kafin “faɗuwa”, amma a cikin tsarin rukunin yanar gizo kawai.

Tare da taimakon ma'auni mai mahimmanci, za ku iya tabbatar da yanayin da masu amfani ba za su ji gazawar tsarin ajiya gaba ɗaya ba. Amma muna sake maimaitawa, wannan yana buƙatar girman girman hankali, wanda, ta hanyar, zaku iya tuntuɓar mu kyauta :-).

Kafa metrocluster

Kafa metrocluster yayi kama da kafa kwafi na yau da kullun, wanda muka bayyana a ciki labarin da ya gabata. Saboda haka, bari mu mayar da hankali kawai a kan bambance-bambance. Mun kafa benci a cikin dakin gwaje-gwaje dangane da gine-ginen da ke sama, kawai a cikin ƙaramin sigar: tsarin ajiya guda biyu da aka haɗa ta hanyar 10G Ethernet, maɓalli na 10G guda biyu da kuma mai watsa shiri guda ɗaya wanda ke kallon masu sauyawa a duka tsarin ajiya tare da tashoshin 10G. Mai yanke hukunci yana gudana akan injin kama-da-wane.

Lokacin saita IPs masu kama-da-wane (VIPs) don kwafi, yakamata ku zaɓi nau'in VIP - don metrocluster.

Mun ƙirƙiri hanyoyin haɗin kai guda biyu don LUNs guda biyu kuma mun rarraba su a cikin tsarin ajiya guda biyu: LUN TEST Primary akan tsarin ajiya 1 (METRO link), LUN TEST2 Primary don tsarin ajiya 2 (METRO2 mahada).

A gare su, mun tsara maƙasudai iri ɗaya guda biyu (a cikin yanayinmu na iSCSI, amma FC kuma ana tallafawa, tsarin saitin daidai yake).

Tsarin ajiya 1:

Tsarin ajiya 2:

Don haɗin haɗin kai, an yi taswira akan kowane tsarin ajiya.

Tsarin ajiya 1:

Tsarin ajiya 2:

Mun kafa multipath kuma mun gabatar da shi ga mai watsa shiri.

Kafa mai sasantawa

Ba kwa buƙatar yin wani abu na musamman tare da mai sasantawa da kansa; kawai kuna buƙatar kunna shi akan rukunin yanar gizo na uku, ba shi IP kuma saita damar shiga ta ta ICMP da SSH. Ana yin saitin kanta daga tsarin ajiya da kansu. A wannan yanayin, ya isa a saita mai yanke hukunci sau ɗaya akan kowane masu kula da ajiya a cikin metrocluster; waɗannan saitunan za a rarraba su ga duk masu sarrafawa ta atomatik.

A cikin sashe Remote replication>> Metrocluster (akan kowane mai sarrafawa)>> maɓallin "Sanya".

Mun shigar da IP na arbiter, kazalika da kula da musaya na biyu m ajiya masu kula.

Bayan wannan, kuna buƙatar kunna duk ayyukan (maɓallin "Sake kunna komai"). Idan an sake saitawa a nan gaba, dole ne a sake kunna sabis don saitunan suyi tasiri.

Muna duba cewa duk ayyuka suna gudana.

Wannan yana kammala saitin metrocluster.

Gwajin hadari

Gwajin haɗari a cikin yanayinmu zai kasance mai sauƙi da sauri, tun da aikin maimaitawa (canzawa, daidaito, da sauransu) an tattauna a cikin labarin karshe. Sabili da haka, don gwada amincin metrocluster, ya ishe mu don bincika atomatik na gano gazawar, sauyawa da kuma rashin asarar rikodi (I / O tsayawa).

Don yin wannan, muna yin koyi da gazawar ɗaya daga cikin tsarin ajiya ta hanyar kashe duka masu sarrafa ta ta jiki, tun da farko sun fara kwafin babban fayil zuwa LUN, wanda dole ne a kunna shi akan sauran tsarin ajiya.

Kashe tsarin ajiya ɗaya. A kan tsarin ajiya na biyu muna ganin faɗakarwa da saƙonni a cikin rajistan ayyukan cewa haɗin da tsarin makwabta ya ɓace. Idan an daidaita sanarwar ta hanyar SMTP ko SNMP saka idanu, mai gudanarwa zai karɓi sanarwa daidai.

Daidai daƙiƙa 10 daga baya (wanda ake iya gani a duka hotunan kariyar kwamfuta), haɗin haɗin METRO (wanda shine Firamare akan tsarin ma'ajin da ya gaza) ya zama Firamare kai tsaye akan tsarin ajiyar aiki. Yin amfani da taswirar data kasance, LUN TEST ya kasance samuwa ga mai masaukin baki, rikodin ya ɗan tsoma kaɗan (a cikin kashi 10 na alƙawarin), amma ba a katse ba.

An kammala gwajin cikin nasara.

Don takaitawa

Aiwatar da metrocluster na yanzu a cikin tsarin ajiya na AERODISK Engine N-jerin ajiya cikakke yana ba da damar warware matsalolin inda ya zama dole don kawarwa ko rage raguwar lokacin ayyukan IT da tabbatar da aikin su 24/7/365 tare da ƙarancin farashin aiki.

Za mu iya cewa, ba shakka, cewa duk wannan shine ka'idar, kyakkyawan yanayin dakin gwaje-gwaje, da sauransu ... AMMA muna da ayyuka da yawa da aka aiwatar da su wanda muka aiwatar da ayyukan da ake yi na bala'i, kuma tsarin yana aiki daidai. Ɗaya daga cikin sanannun abokan cinikinmu, waɗanda ke amfani da tsarin ajiya guda biyu kawai a cikin ƙayyadaddun ƙayyadaddun ƙayyadaddun bala'i, ya riga ya amince da buga bayanai game da aikin, don haka a cikin sashi na gaba za mu yi magana game da aiwatar da yaki.

Na gode, muna fatan tattaunawa mai amfani.

source: www.habr.com