Izicelo

I-Extensible Messaging and Presence Protocol (XMPP) iyiphrothokholi yezokuxhumana ye-middleware egxile kumlayezo esuselwe ku-XML (Ulimi Lwemakhaphu Olunwetshiwe). Iphrothokholi ekuqaleni yaqanjwa ngokuthi i-Jabber, futhi yasungulwa umphakathi we-Jabber ovulekile ngo-1999 ukuze uthole eduze kwesikhathi sangempela, umlayezo osheshayo (IM), ulwazi lobukhona, nokugcinwa kohlu loxhumana nabo. Idizayinelwe ukuthi inwetshwe, iphrothokholi iphinde yasetshenziselwa amasistimu okubhalisa okushicilela, ukusayinda i-VoIP, ividiyo, ukudluliswa kwamafayela, amageyimu, izinhlelo zokusebenza ze-inthanethi Yezinto ezifana negridi ehlakaniphile, nezinsizakalo zokuxhumana nabantu. Ngokungafani nezivumelwano eziningi zemiyalezo esheshayo, i-XMPP ichazwa ngezinga elivulekile futhi isebenzisa indlela yesistimu evulekile yokuthuthukisa nokusebenzisa, lapho noma ubani angasebenzisa isevisi ye-XMPP futhi abambisane nezinye izinhlangano ezisetshenziswayo. Ngenxa yokuthi i-XMPP iyiphrothokholi evulekile, ukusetshenziswa kungathuthukiswa kusetshenziswa noma iyiphi ilayisensi yesofthiwe; nakuba amaseva amaningi, iklayenti, kanye nokuqaliswa komtapo wezincwadi kusatshalaliswa njengesofthiwe yamahhala nemithombo evulekile, ukuqaliswa okuningi kwe-freeware nesofthiwe yezohwebo nakho kukhona. [block:block=4] I-software esekelwe ku-XMPP isatshalaliswa kabanzi ku-inthanethi yonkana, futhi ngo-2003, yasetshenziswa abantu abangaphezu kwezigidi eziyishumi emhlabeni wonke, ngokusho kwe-XMPP Standards Foundation. Ukuze uthole ukufakwa kuhlu kwakamuva kakhulu kwamaKlayenti avumelekile, qiniseka ukuthi uhlola lapha: httpxmpp.org/xmpp-software/clients/ Nakuba leli khasi lisebenza njengesibuko salolu lwazi, isayithi le-xmpp.org liyindawo evumelekile yolwazi. Umthombo: xmpp.org xmpp ku-wikipedia
# Izicelo

Ku-Raspberry Pi ungakwazi ukusebenzisa kalula i-webserver yesayithi lakho. Siphinde sahlola isofthiwe yomthombo ovulekile, i-Drupal ne-Wordpress, ku-Raspberry. Imiphumela ibonisa ukuthi le divayisi isebenza kahle kakhulu. Le sevisi izokhokha ikakhulukazi ezimeni lapho ukhetha ukusingathwa okwabiwe ngokuvamile, futhi ufuna ukuqiniseka ukuthi iseva yakho isebenzisa izinhlelo zakho zokusebenza kuphela. Futhi, ungenza iseva ngendlela oyifisayo ngokwezidingo zakho eziqondile, futhi ufake izinhlelo zokusebenza ebezingeke zenzeke ekusingatheni. Sincoma ukucushwa kwe-Apache 2 webserver kanye ne-PHP-FPM noma i-NGINX kodwa isinqumo sokugcina sikuwe. Ubuwazi ukuthi ku-Raspberry Pi ungakwazi ukusebenzisa ukulinganisa kokulayisha futhi ukwandise ukutholakala kwewebhusayithi yakho (Ukutholakala okuphezulu) ? [block:block=4] Isebenza kanjani? Ukuze uqale ukusebenzisa lolu hlelo udinga i-2x Raspberry Pi yokulinganisa ukulayisha nge-HAProxy (1x esebenzayo, 1x passive) kanye okungenani ne-2x Raspberry Pi (noma ngaphezulu) kuwebhusayithi yakho. Kodwa-ke, leli khasi alikwazi ukuqukatha ulwazi olubanzi mayelana nendlela yokulungisa isistimu noma ukuthi uhlelo lusebenza kanjani. Ayakhelwe yona, futhi ukuhlaziya izidingo zeklayenti kuhlala kudingeka. Uma unentshisekelo olwazini olwengeziwe noma ukusebenza kwalolu hlelo, kungakhathaliseki ukuthi ku-Raspberry noma yiluphi olunye uhlelo (VPS, sicela ungangabazi ukuxhumana nokusekelwa kwethu kwezobuchwepheshe.

I-VPN iyinethiwekhi yangasese ebonakalayo. Idalwe isofthiwe noma amadivaysi ehadiwe kuseva. Amaklayenti ku-inthanethi yonkana angakha indawo yekhebula yokuxhuma emhubheni evikelekile kanye noxhumo olungenantambo. I-VPN ibonakala ifana ne-LAN yendawo. Ngale nethiwekhi ungakwazi ngokugcwele nangokuphephile, ngezindleko eziphansi, ukuxhuma inethiwekhi ye-LAN yehhovisi legatsha lakho noma kuphi emhlabeni. Abaningi bethu banerutha ye-wifi ekhaya enediski yangaphandle noma iphrinta enamathiselwe. Uhlelo olunjalo lunezinzuzo eziningi. Ungakwazi ukwabelana kalula ngamafayela, usebenzise Ideskithophu Ekude, ufake iseva ye-FTP, nanoma yini enye. Ezinkampanini ezinkulu kuyindaba yenethiwekhi enhle kunjalo. Isidingo esidingekayo wukufinyelela kwenethiwekhi. Angisho isimo lapho uhlezi ehhovisi bese uxhuma ikhebula kukhompyutha yakho ephathekayo, lokho kuyindaba encane. Kodwa, kuthiwani uma udinga ukuphrinta okuthile kuphrinta etholakala etafuleni lomphathi, ubuyekeze isimo sempahla esitokweni, ube nokufinyelela okuphakade kuseva, amaspredishithi noma landa i-imeyili kuseva ye-MS Exchange? Ehhovisi, akuyona inkinga. Manje, kuthiwani uma ukude ngamakhilomitha angu-1000, futhi unekhadi ledatha eliphathwayo noma useholidini futhi unqunyelwe izimo zendawo? Bese kuba khona i-VPN. Emiphakathini ethuthuke kakhulu kwezobuchwepheshe isivele ikhona - kusithonjana sedeskithophu unekhompuyutha ephathekayo enoxhumo lwe-inthanethi "enkampanini ."Ngokuchofoza kabili, linda imizuzwana embalwa - futhi usebhizinisini. Kungani ungasebenzisi ukunethezeka okufanayo kunethiwekhi yasekhaya? [block:block=4] Ngomqondo we-VPN ungahlangana ngezindlela eziningi ezifanayo. Kulo mbhalo, igama elithi VPN esinalo engqondweni liwukuxhumana okubethelwe (umhubhe) kunethiwekhi yendawo ngenethiwekhi yomphakathi (i-inthanethi). Noma ngabe ukuphi ngekhompyutha ephathekayo exhunywe ku-inthanethi futhi udale umhubhe uzosebenza ngendlela efanayo ncamashi nalapho uxhuma emsebenzini ngekhebula noma nge-Wi-Fi. Uzobona amakhompyutha eqembu lomsebenzi, amaphrinta enethiwekhi namadokhumenti okwabelwana ngawo. Uma ikhompuyutha yakho yasekhaya isebenzisa Ideskithophu Ekude, ngena kuyo noma yikuphi

 I-
Udinga okungenani ama-Raspberry Pi amabili ukuze usebenzise i-supercomputer: ukucubungula okufanayo ku-Raspberry Pi kungenzeka ngenxa ye-ultra portable MPICH2 (I-Message Passing Interface). Ngokuzibandakanya okunjalo kufanele kube nekheli le-IP lomphakathi elilodwa kuphela. Ngakolunye uhlangothi i-Raspberry Pi kukhona amakheli endawo kuphela, ngakho-ke ungakwazi kulokhu kucushwa ukuze unikeze isaphulelo -6 Euro ngonyaka kuwo wonke ama-Raspberry Pi kwinqubo yasendaweni. Lezi yizindaba ezinhle kubo bonke abafuna ukwakha i-supercomputer. Ngakho, kukhompuyutha ngayinye eyengeziwe ye-Raspberry Pi ukhokha kuphela u-30â¬. [block:block=4] Esimeni lapho usithumelela eyakho i-Raspberry Pi, wonga imali ekufakweni kwesistimu. Kwesinye isimo, nokho, sikhokhisa imali encane yokufaka. Ukufakwa okuyisisekelo kwesistimu ye-supercomputer ku-Raspberry Pi yi-9⬠futhi enye nenye i-Raspberry Pi kukhompuyutha enkulu ingu-4⬠kuphela. Le yinkokhelo yesikhathi esisodwa yomlawuli. Okunye okungenzeka ukuthi isistimu yakho ifakiwe futhi ihlelwe ngokwazo. Ungavakasha kanjani i-supercomputer: I-University of Southampton Izinyathelo zokwenza ividiyo ye-Raspberry Pi Supercomputer ye-YouTube Southampton
Kungani ungasebenzisi ukuqapha kwe-Raspberry Pi kweziphakeli zakho noma amanye amadivaysi axhuma i-SNMP, njll. Isofthiwe yokuqapha edume kakhulu ehlanganisa ukwenza itulo ithi, i-RRDTools, futhi yakhelwe phezu kwayo njengesibonelo, i-CACTI . Kungenjalo, enye isofthiwe yomthombo ovulekile njenge-ICINGA noma i-NAGIOS ingasetshenziselwa ukuqapha. [block:block=4]
I-Raspberry Pi ingasetshenziswa njengeseva yemeyili ezimele i-POP3, i-IMAP ne-SMTP. Nge-webmail ungasebenzisa i-Squirrelmail noma eminyakeni edlule edume kakhulu i-RoundCUBE. [block:block=4]
Izingxenyekazi zekhompuyutha ezisezingeni eliphezulu kanye noxhumano lwe-inthanethi oluhle luyisidingo sokuqala sokusebenza kweseva ye-DNS. I-Raspberry PI ikunikeza isiqinisekiso sehardware yekhwalithi, futhi esikhungweni sethu sedatha izoxhunywa kulayini wekhwalithi ephezulu ngokutholakala kuka-99.9% Ngezindleko ezincane, iseva ye-DNS etholakala kakhulu ingakhiwa khona lapha ku-Raspberry PI. [block:block=4]