- Azure SRE Agent imaphatikizira luntha lochita kupanga komanso makina owongolera kuti azitha kudalirika m'malo amtambo.
- Imapereka kuwunika kwa 24/7, kuwunika zochitika, kuwongolera zokha, ndi malingaliro amayendedwe abwino kwambiri.
- Ogwiritsa ntchito amatha kulumikizana ndi wothandizirayo pogwiritsa ntchito chilankhulo chachilengedwe, kuwongolera kayendetsedwe kabwino komanso kuyankha kwamavuto.
- Zimathandizira kuchepetsa nthawi yopumira komanso kuyeserera pamanja pakuwongolera mapulogalamu ndi zothandizira ku Azure.
M'zaka zaposachedwa, kuyang'anira kudalirika, kugwira ntchito, ndi kukhazikika kwa mautumiki amtambo kwakhala chinthu chofunika kwambiri kwa makampani omwe amaikapo ndalama zothetsera digito. Mawu akuti SRE (Site Reliability Engineering) tsopano ndiwofunikira m'mawu a katswiri aliyense wa IT. Ndipo ndikupita patsogolo kwa luntha lochita kupanga, Microsoft yachitapo kanthu kuti moyo ukhale wosavuta kwa olamulira, opanga mapulogalamu ndi DevOps poyambitsa Azure SRE Agent.
Wodalirika uyu ndi chimodzi mwazinthu zatsopano kwambiri mu chilengedwe cha Azure, chopangidwa kuti chipereke makina opangira ntchito, kuyang'anira mwanzeru komanso kuthandizira mwachangu mu cloud resources management. Ngati mukudabwa Kodi Azure SRE Agent ndi chiyani, imagwira ntchito bwanji, ikupereka chiyani, ndipo ndani angaigwiritse ntchito?, nkhaniyi ndi zomwe mukuyang'ana: apa mukupita Kalozera wathunthu kwa wothandizira wa Azure SRE, momwe zimaphatikizidwira, ubwino wake, zolephera zenizeni ndi ntchito yake yeniyeni muzochitika zosiyanasiyana zamalonda ndi zamakono.
Kodi Azure SRE Agent ndi chiyani ndipo chifukwa chiyani ili yofunika?
El Azure SRE Agent Ndilo yankho lopangidwa kuti ligwiritse ntchito mfundo za Site Reliability Engineering (SRE) m'malo a Microsoft Azure, kuphatikiza luntha lochita kupanga komanso matekinoloje apamwamba a automation. Wothandizira uyu amakhala ngati a 24/7 wothandizira digito omwe amawunika, amazindikira, amazindikira ndi imathandizira kuthetsa zovuta pamapulogalamu ndi ntchito zomwe zimayikidwa mumtambo wa Azure.
Cholinga chake chachikulu ndi onetsetsani kudalirika kwakukulu, kupezeka ndi ntchito za mapulogalamu, kuchepetsa nthawi ndi zinthu zomwe zimaperekedwa ku ntchito zachizolowezi kapena kukonza zochitika pamanja. Wothandizira amatha kuzindikira zolakwika, kuwonetsa zochita zowongolera, ndipo, ndi chilolezo cha wogwiritsa, amangodzipangira zochepetsera. Komanso, amalola kucheza m'chinenero chachibadwa kudzera macheza, mafunso osavuta, kufufuza, ndi ntchito kwa ogwiritsa ntchito pamitundu yonse: kuchokera ku DevOps ndi SRE kupita kwa oyang'anira makina kapena opanga mapulogalamu.
N’chifukwa chiyani zili zofunika? Chifukwa imayankha ku zovuta zomwe zikukula kwa malo amtambo, komwe kukakamizidwa kuti mukhalebe osasokonezeka, osasunthika, otetezeka komanso ogwira ntchito moyenera kumawonjezeka tsiku ndi tsiku, koma ndi khama lochepa lamanja komanso kuwongolera kwathunthu pazofunikira.
Zofunikira komanso zopindulitsa za Azure SRE Agent

El Azure SRE Agent Zimasiyana ndi zida zina zowunikira komanso zothandizira chifukwa imaphatikiza AI, kusanthula zenizeni zenizeni, zodziwikiratu, ndi mawonekedwe ochezeraPakati pa zinthu zake zabwino kwambiri zomwe timapeza:
- Kuyang'anitsitsa mwachidwi komanso mosalekeza: Wothandizira amayang'anira zonse zomwe zikugwirizana 24/XNUMX, masiku asanu ndi awiri pa sabata, ndikupanga zidziwitso za tsiku ndi tsiku ndi chidule cha momwe ntchito ndi ntchito zilili.
- Kuzindikira zochitika zokha: Chifukwa cha kuphatikiza kwake ndi Azure telemetry, mitengo, ndi ma sign anthawi yeniyeni, mutha kuzindikira zovuta zisanakhudze kwambiri wogwiritsa ntchito.
- Kuchepetsa kodzichitira (nthawi zonse kumayendetsedwa ndi anthu): Ngakhale mungapangire malingaliro ndikuchitapo kanthu kuti muthetse zolakwika, simusintha kusintha popanda kuvomerezedwa ndi wogwiritsa ntchitoyo.
- Malangizo a machitidwe abwino a zomangamanga: Imawonetsa zinthu zomwe zikufunika kusinthidwa, chitetezo, kapena zosintha kuti zigwirizane ndi mfundo zomwe Microsoft ndi dziko la SRE limalimbikitsa.
- Kusanthula chifukwa chachikulu: Pogwiritsa ntchito ma metric ndi zipika, zimathandiza kuzindikira chomwe chikulephereka, kupereka matenda olondola ndi mayankho omwe aperekedwa.
- Zochita zokha zoyankhira: Yankhani zokha zochenjeza zopangidwa ndi Azure Monitor kapena kuphatikiza kwakunja monga PagerDuty, kuwongolera zochitika mwachangu.
- Kuwonetsera kwathunthu kwazinthu ndi zodalira: Zimakulolani kuti muwone mgwirizano pakati pa mautumiki, mapulogalamu ndi zigawo zikuluzikulu, kuwongolera kumvetsetsa kwa chilengedwe ndi kupanga zisankho.
- Chiyankhulo chachilengedwe chochezeraOgwiritsa ntchito amatha kufunsa kapena kupempha zochita polemba chilankhulo chachilengedwe, kuchepetsa njira yophunzirira ndikuwongolera zochitika zatsiku ndi tsiku.
- Kuphatikiza ndi zida zodziwitsira zapamwamba: Chifukwa cha kulumikizana kwake ndi nsanja ngati PagerDuty, ndizotheka kulandira zidziwitso ndikuwongolera zochitika mwaukadaulo.
Izi wothandizira amathandiza kusunga mautumiki apamwamba amtambo, amachepetsa kwambiri kulowererapo pamanja muzochita zachizolowezi y imayika kudalirika molingana ndi zomwe mabizinesi amafuna mu 2025.
Kodi Azure SRE Agent amagwira ntchito bwanji? Kuyanjana, zilolezo ndi kuchuluka kwa magwiridwe antchito

El SRE wothandizira ziyenera kukhala zolondola zokonzedwa ndi zogwirizana ndi zinthu zomwe ziyenera kuyang'aniridwa mu Azure. Kuti muchite izi, muyenera kupereka zilolezo zina (mwachitsanzo, Microsoft. Chilolezo/Ntchito/Kulemba) zomwe zimakupatsani mwayi wofikira ndi kuyang'anira pamagulu omwe afotokozedwa ndi ogwiritsa ntchito.
Wothandizira akhoza kugwira ntchito zosiyanasiyana zochitika ndi mitundu yazachuma, kuphatikiza App Services, Azure Container Apps, ndi zina zilizonse zothandizira mkati mwa gulu lazithandizo. Imagwira ntchito pamawebusayiti onse ndi ma microservices kapena zolemetsa zonyamula.
Mukakhazikitsidwa, kuyanjana konse ndi wothandizira kutha kuchitika mwa:
- The Azure portal mawonekedwe.
- Macheza otengera chilankhulo chachilengedwe amakupatsani mwayi wowona zoyezetsa, kupempha zowunikira, kupempha malipoti, kapena kuyambitsa mayankho omwe afotokozedweratu.
Ndikofunika kuzindikira kuti zochitika zonse zomwe zingathe kusokoneza zimafuna kuvomereza kwa wogwiritsa ntchito. (chinthu chofunikira kwambiri m'malo ovuta kapena opindulitsa). Mwanjira imeneyi, wothandizirayo samachita yekha: akuwonetsa, amatsutsa, ndikudikirira chitsimikiziro asanasinthe.
Kuphatikiza apo, wothandizira amapereka malipoti obwerezabwereza, kuphatikiza:
- Chidule cha zochitika zomwe zidachitika: yogawidwa ngati yogwira, yochepetsedwa kapena yothetsedwa.
- Zambiri pakupezeka, kugwiritsa ntchito CPU, kukumbukira ndi zina zofunika za ntchito iliyonse kapena ntchito.
- Chidule cha zochita ndi malingaliro kuti chilengedwe chikhale chathanzi komanso chogwirizana ndi machitidwe abwino a Microsoft.
Zochitika zenizeni zenizeni ndi zitsanzo zogwiritsira ntchito Azure SRE Agent

Kuthekera kwa Azure SRE Agent kumawonetsedwa bwino pazochitika zatsiku ndi tsiku zomwe IT ndi magulu ogwirira ntchito amakumana nazo. Nazi zitsanzo zamavuto ndi momwe wothandizira amachitira:
- Kugwiritsa ntchito pansi kapena kuwonongeka kosayembekezerekaNgati pulogalamuyo ikhala yosalabadira chifukwa cha zolakwika zamakhodi, kutumizidwa molakwika, kapena kugwiritsa ntchito kwambiri kwa CPU/memory, wothandizirayo amazindikira zovutazo, amafotokoza mwatsatanetsatane chifukwa chake, ndipo angalimbikitse kubweza ntchitoyo, kusinthanitsa, kapena kukonza zina.
- Kufikira makina otsekeredwa (monga kudzera pa RDP): Wothandizira amawunikanso kukhazikitsidwa kwa malamulo a NSG ndipo atha kupereka malingaliro, komanso kugwiritsa ntchito ndi chilolezo, zosintha zofunika kuti abwezeretse kulumikizana.
- Zolakwika pokoka zithunzi zamabokosi: Ngati kutsitsa kwachithunzi sikukanika chifukwa cha vuto la netiweki, tagi yolakwika, kapena kulephereka kulembetsa, wothandizira amazindikira chomwe chimayambitsa (monga chizindikiro chomwe sichinakhalepo ngati "last1") ndikupereka malingaliro obwerera ku mtundu waposachedwa kwambiri.
Kuyanjana ndikwachilengedwe kwambiri: mutha ndikufunseni zinthu monga, "Chifukwa chiyani pulogalamu yanga sikugwira ntchito?" kapena "Kodi ma CPU ndi ma spikes amakumbukiro ndi chiyani?" kapena "Kodi chothandizirachi chikudalira chiyani?" Wothandizira amayankha ndi chidziwitso chomveka komanso njira zenizeni kuti abwerere mwakale.
Momwe mungapangire ndikusintha wothandizira wa SRE ku Azure sitepe ndi sitepe
Njira yopezera wothandizira wa SRE ndikuyendetsa ku Azure, kutengera maphunziro aboma komanso zochitika zenizeni, nthawi zambiri zimakhala motere:
- Pezani portal ya Azure ndikuyang'ana njirayo Wothandizira wa SRE mkati mwa mautumiki omwe alipo.
- Sankhani njira ya Pangani, yomwe idzayambitse kasinthidwe ka wothandizira watsopano.
- Tchulani zolembetsa za Azure, sankhani kapena pangani gulu linalake la othandizira, ndipo perekani dzina ndi dera kuti mutumizeko (pakadali pano, pakuwoneratu, izi nthawi zambiri zimakhala Central Sweden, koma akhoza kuyang'anira zothandizira kuchokera kudera lina lililonse).
- Sankhani udindo woyenera, kawirikawiri wothandizana naye, kotero kuti wothandizira azitha kugwira ntchito pazinthuzo.
- Sankhani magulu othandizira kuyang'anira ndi kusunga kasinthidwe.
- Mukapangidwa, pezani wothandizira kuchokera pamndandanda wa SRE Agents ndikugwiritsa ntchito macheza kuti muyambe kuyanjana ndikuwunika momwe zinthu ziliri.
Zilolezo ziyenera kukonzedwa bwino kuti wothandizira aziwoneka ndikuchitapo kanthu pazinthu zazikulu za zomangamanga zanu.
Azure SRE Agent ndi kuphatikiza kwake ndi mapulogalamu a pa intaneti ndi zotengera
Wothandizira wa SRE atha kugwiritsidwa ntchito pamitundu ingapo yamapulogalamu ku Azure, kuphatikiza:
- Utumiki wa Azure App: Wothandizira amayang'anira ntchito zapaintaneti, amazindikira zolakwika za HTTP (monga zolakwika za 500), amasanthula zotumizidwa, ndipo amatha kupangira kapena kuchita kusinthana kwa slot ikazindikira kulephera chifukwa chakusintha kolakwika.
- Mapulogalamu a Azure Container: Wothandizira amayang'anira mapulogalamu omwe ali m'mitsuko, kuzindikira zithunzi, ma tag, kapena zovuta zolumikizira, ndipo amatha kupereka malingaliro kapena kubweza kumitundu yakale yomwe idagwira bwino ntchito.
Njira yodziwika bwino imaphatikizapo kuyika pulogalamuyo poyesedwa, kutengera zolakwika (mwachitsanzo, kugwiritsa ntchito zosintha zachilengedwe monga INJECT_ERROR), lolani wothandizira kuti azindikire vutolo, funsani za matendawo kudzera pa macheza ndipo, ngati kuli kotheka, aloleni kuti achepetseko. Zonsezi popanda kuchitapo kanthu mwachindunji, koma nthawi zonse kuyang'aniridwa ndi munthu yemwe amapereka zilolezo zomaliza.
Zochitika zamabizinesi abwino komanso nkhani zopambana ndi Azure SRE Agent
The leap to reliability automation imathandiza makamaka mu:
- Kutumiza kosalekeza ndi kuphatikiza kopitilira (CI/CD) malo pomwe nthawi ndi yofunika kwambiri ndipo zolakwika ziyenera kuzindikirika ndikuwongolera zisanafike popanga.
- Makampani omwe amayang'anira ntchito za SaaS, ma microservices, ma API apagulu, kapena nsanja zamsika, pomwe kusokoneza kungakhudze mbiri ndi bizinesi.
- Zomangamanga zomwe zimafuna kutsatira mosamalitsa za SLO/SLI (Zolinga za Mlingo wa Utumiki/Zizindikiro) zofotokozedwa ndi kampani kapena mapangano ndi makasitomala.
- Mapulatifomu omwe amaphatikiza ntchito zingapo za Azure ndipo amafunikira malo apakati owonekera, kuchenjeza ndi kuyankha modzidzimutsa.
Wothandizirayo samangothandiza kusunga mlingo woyembekezeka wa ntchito, komanso amalola magulu kuti aziganizira kwambiri ntchito zamakono m'malo mozimitsa moto kapena kuthetsa mavuto ang'onoang'ono, kukwaniritsa kayendetsedwe kabwino komanso kokhazikika.
Momwe mungalankhulire ndi kuyanjana ndi wothandizira wa SRE: mafunso wamba ndi malamulo othandiza
Ubwino umodzi wosiyana wa wothandizira ndi kuthekera kwake Yankhani m'chilankhulo chachilengedwe ku mafunso osiyanasiyana. Zitsanzo zina za mafunso omwe amafunsidwa kawirikawiri kapena malamulo othandiza omwe mungafunse:
- "Ungandithandize bwanji?"
- "Ndi zinthu ziti zomwe mukuyang'anira pano?"
- "Ndi zidziwitso ziti zomwe mumalimbikitsa pantchitoyi?"
- "N'chifukwa chiyani pulogalamu yanga ya X ikuchedwa kapena siyikuyankha?"
- "Kodi ma CPU ndi makumbukidwe anji pa pulogalamu yanga Y?"
- "Kodi mutha kubwereranso kuntchito yomaliza?"
- "Kodi chida ichi chikudalira chiyani?"
- "Kodi mungandiwonetse mbiri yamasiku ano?"
Wothandizira amayankha ndi zambiri zaukadaulo, zowonera, ndipo, ngati kuli kofunikira, kachitidwe kantchito kuti athetse vutolo kapena kupempha chivomerezo kuti achitepo kanthu.
Zochepa komanso zofunikira mukamagwiritsa ntchito Azure SRE Agent
Ngakhale wothandizira wa Azure SRE amabweretsa zabwino zambiri, ndikofunikira kumvetsetsa izi Sili wosalakwa ndipo sichimalolatu ulamuliro wa munthu.. Zoletsa zake pano (June 2025) zikuphatikiza:
- Kudalira kuvomerezedwa ndi anthu: Pazochita zovuta, wothandizira nthawi zonse amafuna chilolezo cha wogwiritsa ntchito, chomwe chingachedwetse kuyankha pazochitika zadzidzidzi ngati palibe kuyang'anira mwakhama.
- Kudziwa kumangotengera zomwe zilipo: Ngati pali kusowa kwa zipika, ma metrics, kapena telemetry yosasinthika bwino, wothandizira angapereke malingaliro omwe si olondola kwenikweni.
- Zowoneratu ndi Kufikira Koletsedwa: Pakalipano, madera ena kapena ma akaunti sangakhale ndi mwayi wopita kwa wothandizira, monga momwe zilili mu "preview" mode kapena mwayi wochepa wolembetsa.
- Sichikhudza mwamtheradi mitundu yonse ya zochitika: Pali zochitika zovuta zomwe wodziwa bwino SRE kapena DevOps wothandizira amayenera kuwunikiranso bwino zomwe wothandizirayo adapereka asanapange chisankho.
Kuti muchepetse zoopsazi, ndi bwino:
- Konzani bwino zilolezo ndi mwayi wofikira ku logs/telemetry.
- Chitani ndemanga za nthawi ndi nthawi za kasinthidwe ndi zochita zochitidwa ndi wothandizira.
- Nthawi zonse tsimikizirani malingaliro omwe akukhudza kusintha kwamapangidwe kuzinthu zomwe zimathandizira anthu.
Momwe mungawunikire magwiridwe antchito a wothandizira wa Azure SRE?
Microsoft yachita zowunikira pogwiritsa ntchito kuyesa kwa ogwiritsa ntchito, kuyerekezera zochitika, ndi kusanthula ma metrics muzochitika zosiyanasiyana, ndikuwunikira:
- Kulondola kwa matenda: Gawo la zochitika zodziwika bwino.
- Kuchita bwino kwa kuchepetsa: Nambala ndi kuchuluka kwa zovuta zomwe zidathetsedwa zokha kapena ndi kuyang'aniridwa.
- Kukhutira kwa ogwiritsa ntchito: Ndemanga ndi mavoti omwe alandilidwa kudzera mu mawonekedwe ophatikizika a mayankho.
Izi zimapangitsa kuti machitidwe a wothandizirayo azisinthidwa mosalekeza ndikuwongolera kuti agwirizane ndi zosowa ndi zochitika zatsopano.
Njira zabwino, malingaliro, ndi mindandanda kuti mupindule kwambiri ndi wothandizira wa Azure SRE
Kuti mugwiritse ntchito bwino luso lake, tsatirani malangizo awa:
- Fotokozani momveka bwino madera omwe akuyenera kuyang'aniridwa kuyang'ana zothandizira pa mfundo zofunika kwambiri.
- Gwiritsani ntchito ndemanga zanthawi zonse za malingaliro ndi zochita za wothandizira kuti awonetsetse kuti akugwira ntchito komanso chitetezo chake.
- Phatikizani wothandizira ndi zida zina monga Azure Monitor, PagerDuty, kapena nsanja zina zowongolera zochitika kuti muwonjezere kuyankha.
- Nthawi zonse tsimikizirani zomwe mukufuna kuchita ndi kulowererapo kwa anthu pakusintha kwachilendo kapena kosazolowereka.
- Sungani zilolezo ndi zosintha zatsopano kotero kuti wothandizira ali ndi zonse zofunika.
- Limbikitsani chikhalidwe cha kudalirika mwachangu, kugwiritsa ntchito zidziwitso ndi malingaliro kuti mupewe zovuta m'malo mongoyankha.
Zaukadaulo ndi ma metric ofunikira pakuwongolera zodalirika ndi Azure SRE Agent
Kudalirika kumayesedwa ndi ma SLO ndi ma SLI, kuyang'ana pa:
- Kupezeka: peresenti ya mayankho oyenerera a utumiki.
- Kuchedwa ndi magwiridwe antchito: nthawi zoyankha pamaperesenti enieni.
- Kupambana/kulakwitsa: chiŵerengero pakati pa kuchita bwino ndi kulephera.
- Kuchuluka kwa mphamvu: chiwerengero cha mapulogalamu omwe asinthidwa pakapita nthawi.
Wothandizira amasanthula deta iyi kuti Dziwani zomwe zikuyenda bwino, fotokozerani momwe zilili komanso perekani zowongolera.
Kodi Azure SRE Agent ndi ndani? Ndani ayenera kutengera izo?
Agent idapangidwa kuti:
- Magulu a SRE ndi DevOps omwe amayang'anira zinthu zingapo ku Azure.
- Oyang'anira IT amene akufuna kulamulira kwambiri ndi kulowerera pang'ono pamanja.
- Madivelopa ndi oyang'anira nsanja kufunafuna zida zowunikira komanso mayankho.
- Makampani Oyamba ndi Mabizinesi Ang'onoang'ono ndi Apakatikati omwe akufuna kupikisana modalirika popanda kukulitsa zida zawo mopitilira muyeso.
Kutenga wothandizira ndi akulimbikitsidwa makamaka muzochitika zokhala ndi scalability kwambiri, kufunikira kwa makina odzichitira komanso kupezeka kwakukulu.
Tsogolo la chithandizo chamtambo: machitidwe ndi kusinthika kwa Azure SRE Agent
Zochitika zimasonyeza zimenezo Othandizira anzeru adzakhala osewera ofunikira pakuwongolera mtambo. Microsoft ikupitiliza kukonza luso la kuphatikiza, kudziyimira pawokha, ndi kusanthula, ndi zomwe zidzachitike m'tsogolo potengera kuphunzira pamakina ndi kusanthula kwa chipika chapamwamba.
Pomwe ukadaulo ukupita patsogolo, makampani ochulukirapo amatengera othandizira omwe samangochita, koma kupewa mavuto ndikupereka malingaliro abwino, kukwaniritsa Ubwino wampikisano wowona pakudalirika komanso ntchito zamtambo.
Azure SRE Agent adadzikhazikitsa yekha ngati chida chofunikira pakuwongolera kudalirika kwamtambo wamakono: yokhala ndi makina apamwamba kwambiri, luntha lochita kupanga, kuphatikizika kwachilengedwe, ndi mawonekedwe olankhulirana omwe amathandizira kuwongolera ndi kukonza zochitika. Kuchokera pakutumizidwa mpaka kuwunika kosalekeza ndi kukhathamiritsa kwa machitidwe abwino, wothandizira amapereka yankho lathunthu logwirizana ndi zosowa za 2025.
Kwa kampani iliyonse kapena katswiri yemwe akufuna kusunga mapulogalamu awo ku Azure modalirika komanso moyenera, a Azure SRE Agent akuyimira chisinthiko komanso kusintha kwa kasamalidwe ka ogwiritsa ntchito kumapeto.. Ngati mukuyang'ana kuti muchepetse ntchito zobwerezabwereza, yembekezerani zovuta, ndikuwonjezera zanzeru zaposachedwa pamtambo, Azure SRE Agent ndiye chida chofunikira.
Ndine wokonda zaukadaulo yemwe wasandutsa zokonda zake za "geek" kukhala ntchito. Ndakhala zaka zoposa 10 za moyo wanga ndikugwiritsa ntchito ukadaulo wotsogola komanso kusewera ndi mitundu yonse yamapulogalamu chifukwa cha chidwi chenicheni. Panopa ndaphunzira luso la pakompyuta komanso masewera a pakompyuta. Izi zili choncho chifukwa kwa zaka zoposa 5 ndakhala ndikulembera mawebusaiti osiyanasiyana pa teknoloji ndi masewera a pakompyuta, ndikupanga nkhani zomwe zimafuna kukupatsani zambiri zomwe mukufunikira m'chinenero chomwe chimamveka kwa aliyense.
Ngati muli ndi mafunso, chidziwitso changa chimachokera ku chilichonse chokhudzana ndi makina opangira Windows komanso Android pama foni am'manja. Ndipo kudzipereka kwanga ndi kwa inu, nthawi zonse ndimakhala wokonzeka kuthera mphindi zochepa ndikukuthandizani kuthetsa mafunso aliwonse omwe mungakhale nawo pa intaneti.

