Yuam kev "502 Phem Gateway" - yog dab tsi? Ua rau thiab kev

Txhua Internet neeg siv tau pom nyob rau hauv qhov browser lus "502: Phem Gateway», uas txhais tau tias cov tsos ntawm ib qho yuam kev nyob rau sab ntawm lub web neeg rau zaub mov thaum lub sij hawm cov lus nug ua. Cov uas keev ua failures txuam nrog misconfigured web neeg rau zaub mov kho vajtse los yog hosting lub tuam txhab. Standard teeb meem yog cov kev tuav DNS los yog npe neeg rau zaub mov.

Dab tsi "502: Phem Gateway"

Qhov no yuam kev hais tias qhov kev thov ntawm qhov browser rau lub Web site neeg rau zaub mov puas tau, tab sis twb incorrectly daws los yog muab tshem tawm los ntawm cov queue. Yog hais tias daim ntawv thov zaub mov yog nyob qab ib tug Internet rooj vag, nws yog yuav qhov teeb meem yog nyob rau hauv lub rooj vag los yog nyob rau hauv lub chaw ua hauj lwm ntawm lub Web site neeg rau zaub mov, uas hau cov ntaub ntawv rau lub rooj vag yuam kev, thiab nws yog ces tso tawm nyob rau hauv tus neeg siv lub browser.

Cov ua yuam kev 502. Tus tsis muaj neeg rau zaub mov cov kev pab

Lub ntsiab teeb meem ntawm tshwm sim ntawm qhov yuam kev yog tsis txaus neeg rau zaub mov cov kev pab rau ko khoom queries, vim hais tias ntawm uas tus neeg rau zaub mov pib tsim ib qho yuam kev 502. Tsis muaj ntawm cov kev pab tej zaum yuav yog kev kho vajtse (tsis muaj kev nco, processor los yog tsis txaus tsav ceev), thiab kev pab cuam-yam misconfiguration neeg rau zaub mov los yog software siv.

Tab sis muaj tej yam teeb meem nyob qhov twg ib tug neeg rau zaub mov nrog kev pab txaus tseem tsis tseg kom muaj ib qho yuam kev 502: Phem Gateway. Yuav ua li cas yuav nws yuav, yog hais tias tsis kho vajtse failures?

Resource txwv yuav nkag mus hauv thaum koj tawm ib saab VPS neeg rau zaub mov los yog muab qhia hosting sab nraum ntawm lub tariff txoj kev npaj. Raws li ib tug tshwm sim, lub neeg rau zaub mov yuav tsis tau leg lub tam sim no load.

Web servers xws li Apache, muaj ib tug taag naj npawb ntawm cov ntawv thov handlers, uas yog teev nyob rau hauv nws cov configuration. Yog hais tias nkawd ob leeg yog tibneeg hu tauj coob, cov khoom thov queued, thiab thaum nws tej zaum yuav tsis ntau tshaj ib feeb rau lawv txhua txhua tus. Nyob rau hauv cov kev tshwm sim ntawm ib tug timeout thov yog aborted thiab cov neeg siv yog nthuav nrog ib tug yuam kev handler 502. Ntxiv tsuas tej zaum yuav tsis muaj txaus tam sim no muaj cov kev pab rau tej kev ua queue.

Yog hais tias koj siv rau cov neeg rau zaub mov PHP + FastCGI software bundles ntawm ib tug xov tooj uas tsis yog-optimized php-CGI dab yuav luag ib txwm tshwm sim overload thiab tsis muaj ntawm cov kev pab.

Feem ntau qhov ntawm ib tug tsis muaj kev pab rau kev ua thov

1. Cov neeg rau zaub mov yuav tsis tau tiv nrog qhov tam sim no tus xov tooj ntawm simultaneous qhua. Tsis tas li ntawd, ib tug tseem ceeb ib feem ntawm cov kev pab tej zaum yuav siv ntau yam kev tshawb fawb cav kab laug sab , thiab tsis ncaj ncees lawm software scripts.
2. neeg rau zaub mov overload thaum lub sij hawm hacker DDoS-nres thaum lub neeg rau zaub mov yog coj tuaj rau lub tsis ua hauj lwm ntawm ib tug loj tus naj npawb ntawm simultaneous thov kom tau.
3. Muaj tej lub sij hawm thaum uas siv cov kev pab cuam ntawm virtual hosting mam li nco dheev ib qho yuam kev 502: Phem Gateway. Ua li cas nws txhais li cas? Qhov no tej zaum yuav qhia ib qho teeb meem ntawm tus tswv tsev sab, lub npe hu ua overselling, t. E. Hosting lub tuam txhab muab ib tug neeg rau zaub mov ib tug npaum li ntawm tus thov kev pab nyiaj uas lub sij hawm ntawm ncov load tam sim no lawv tsis muaj vajtse kev pab.
4. Tsis yog configuration ntawm cov neeg rau zaub mov nws tus kheej, los yog tsis muaj kev software los yog kho vajtse compatibility.
5. Siv lub hauv internet plug lwm cov kev pab, xws li ib tug qhua txee, ntau yam informers, scripts. Cov kev ua yuam kev tej zaum yuav tshwm sim nyob rau hauv cov ntaub ntawv ntawm cov teeb meem nrog rau lwm qhov chaw.
6. Download tau loj cov ntaub ntawv mus rau lub neeg rau zaub mov thaum cov neeg pluag zoo ntawm Internet kev twb kev txuas.

PHP Script uas tsis

Yuam kev 502 yuav tshwm sim vim hais tias scripts, plug-ins los yog extensions rau cov lus PHP, uas raws li qhov kawm tiav ntawm qhov kev siv neeg rau zaub mov tsis kis tus coj code. Piv txwv li, los ua kom muaj ib qho yuam kev 502: Phem Gateway nginx raws li ib tug ntawm cov npe neeg rau zaub mov xaiv tej zaum vim kev txiav txim ntawm tsab ntawv raws li txoj cai thiab kev xaav ntawm disconnection nrog cov kev pab cuam ntawm ib lub web neeg rau zaub mov raws li ib tug system tsis ua hauj lwm.

Yog li ntawd, tag nrho cov zoo li qub ntaub ntawv (kos duab, qhov chaw cov nplooj ntawv, Robots) ntaub ntawv mus thauj khoom kom zoo thiab tsis muaj teeb meem. Dab tsi "502: Phem Gateway" nyob rau hauv cov ntaub ntawv no? Hais tias ib tug tsis ua hauj lwm tshwm sim yog thaum daus software scripts, plug-ins thiab extensions.

Kho ntsuas 502

Thawj kauj ruam yog los soj ntsuam qhov tam sim no neeg rau zaub mov load, tshwj xeeb tshaj yog nyob rau hauv lub sij hawm ntawm qhov yuam kev. Kev mloog yuav tsum tau them mus rau lub load nco thiab qhov yuav tsum tau kom nws loj los txhim kho cov lus nug ua.

Xyuas qhov tseeb qhov chaw ntawm kev txwv nyob rau hauv cov xov tooj ntawm ib txhij tiav los ntawm cov php-CGI dab. Lawv tsis ncaj ncees lawm configuration ua kom ceev cov kev pab thiab tsis tu ncua overload tshwm sim lus "502: Phem Gateway". Yuav ua li cas yog nws thiab yuav ua li cas mus kho cov kev txwv ntawm dab, nrhiav cov kev pab cuam lub rooj txais neeg zov me nyuam.

Txo thov kom lwm network kev pab, thiab teem lub sij hawm tsis pub tshaj rau lawv loading thiab cov lus teb. Qhov no tso cai rau koj mus saib, yog dab tsi yuav tawm hauv lub neeg rau zaub mov cov kev pab, thiab pab tau tshem ntawm cov sab nraud "slipping" ntawm lub site.

Nyob rau hauv cov ntaub ntawv ntawm lub sijhawm twg los ntawm overselling los yog tsis neeg rau zaub mov configuration nqis, hu rau tus neeg yug party. Yog hais tias muaj yog tsis muaj cov tshuaj tiv thaiv thiab qhov teeb meem mob tsawv, hloov hosting zov me nyuam. neeg rau zaub mov yog tsis tej zaum yuav raug nyob rau hauv losses vim muaj ib tug yooj yim kev ua yuam kev 502: Phem Gateway. Qhov no txhais li cas rau ua lag ua luam, Kuv xav hais tias nws tsis yog tsim nyog los piav qhia.