Munyaya inotevera tichazotarisa tinga flasha sei DNS cache muUbuntu. Pese pano uye ipapo DNS cache inoda kubhururuka pane yako Ubuntu system. Nezve izvi isu tichadzivirira IP kero kukonana. Kana mumwe munhu asati aziva, taura kuti iyo DNS (Domain Name Service) ine basa rekupa zita rewebhu kune inoenderana IP.
DNS inoonekwa seimwe yezvinhu zvakakosha zveInternet kubatana. Nechinangwa che kukurumidza kuwana mawebhusaiti akashanyirwa kazhinji, michina yedu inoteedzera zvinyorwa zveDNS, kana mune mamwe mazwi, zviise cache.
Kutumidza mazita kune IP kero ndiyo inonyanya kuzivikanwa chimiro cheDNS protocols. Semuenzaniso, kana iyo IP kero yeiyo saiti yeGoogle iri 216.58.210.163, vazhinji vevanhu vanosvika vachinyora www.google.com uye kwete iyo IP kero sezvo zviri nyore kwazvo kuyeuka. Iyo IP saiti kero inogona kuchinja nekuda kwezvikonzero zvakawanda, pasina iwe unofanirwa kutumidza zita rewebhu. Kana iwe uchida kuziva zvakawanda nezve iyo domain zita system, unogona kubvunza iyo chinyorwa chavakaburitsa paWikipedia nezvazvo.
Kana iyo DNS cache isina kumbobviswa, inogona kutungamira kune akasiyana marudzi ekukanganisa. Iko kukanganisa kunogona kuitika kunyanya kana webhusaiti ikachinja iyo IP kero Izvi zvinogona kukonzera kukonana kwekero yeIP. Naizvozvo, kunzvenga dambudziko iri, iyo DNS cache yemuchina wedu inofanira kubviswa nguva dzose. Uye zvakare, kubvisa iyo DNS cache kunobatsira kubvisa zvisina basa dhata dzinotora iyo sisitimu uye kugadzirisa mamwe matekinoroji matambudziko ane chekuita nekakurumbira kukanganisa kwe 'zvinyorwa zvechinyakare'.
Mumitsara inotevera tichaona kuti sei flush DNS cache pane Ubuntu inoshanda system mumatanho mashoma akajeka uye akajeka ekushandisa mumidziyo yedu.
Flush DNS cache pane Ubuntu michina
Kuita basa iri tichava nenzira dzakasiyana.
Chenesa DNS uchishandisa systemd-resolution
Tisati tatsvaira DNS cache, tichakwanisa tarisa DNS manhamba kuvhura iyo terminal (Ctrl + Alt + T) uye uchinyora unotevera kuraira:
sudo systemd-resolve --statistics
Izvo zvinobuditswa neiyo terminal zvinofanirwa kutarisa chimwe chinhu seinotevera:
Kubva pane iyo skrini pamusoro, iyo iripo cache saizi iri 106.
Kana tangoziva huwandu, tinogona kuenderera mberi shandisa DNS cache uchishandisa systemd-resolution. Iyo daemon yeDNS yakavakirwa mukati systemd uye iyo yako system yatove kushandisa kune zvinhu zvakawanda. SaDhiyabhorosi systemd-kugadzirisa Iri kushanda pane ese Ubuntu masisitimu, isu tichakwanisa kuishandisa kujekesa yedu DNS cache. Tichafanira chete kushandisa unotevera kuraira mune iyo terminal (Ctrl + Alt + T):
sudo systemd-resolve --flush-caches
Para chengetedza kuti nzira yekurasa yakabudirira, isu ticha mhanyisa iwo murairo zvakare mune terminal kuti tione cache cache sezvataimboita kare:
sudo systemd-resolve --statistics
Sezvauri kuona kubva kune iyo skrini pamusoro, iyo iripo cache saizi paramende zero. Izvi zvinoreva kuti cache yakabviswa zvinobudirira, uye ndozvatinoda.
Flush cache uchishandisa iyo dns-yakachena kuraira
Imwe nzira inoshanda ye bvisa yedu DNS cache ndeye kushandisa unotevera kuraira mune terminal (Ctrl + Alt + T):
sudo /etc/init.d/dns-clean start
Ndicho chinhu chakanyanya kukosha mushandisi chinofanira kuziva nezve kufasha DNS cache muUbuntu. Muzviitiko zvese, maitiro acho ari nyore uye haatore reboot yeese system.
Recuerda, que paUbuntu 16.04, DNS cache haina kugoneswa nekutadza. Tichakwanisa kushandisa zvishandiso senge bind, dnsmasq, nscd, nezvimwe. kugadzira DNS caches pakombuta yedu. Chero iyo iyo DNS sevhisi Kana yako system ichimhanya, haifanire kunge iri dambudziko kuimisazve kuti ibvise iyo DNS cache.
Zano rakanaka, ndinokutendai zvikuru.