IKubernetes kungumsebenzi omuhle kwaziwa yibo bonke, ikakhulukazi ngokuthunyelwa nokuphathwa kohlelo lokusebenza olunesiqukathi. Futhi uMarkus Eisele, i-Red Hat's EMEA Developer Adoption Lead, unemininingwane ebalulekile kunoma ngubani onentshisekelo yokufunda ngayo.
Futhi ukuthi ukuthuthukiswa kwebhizinisi bekulokhu kungenye yezinselelo ezinkulu zobunjiniyela bamakhompyutha, futhi ikakhulukazi izinkampani ezifana neRed Hat. Kungakho kule minyaka eyishumi edlule sisukile ekwakhiweni kwezakhiwo ezinemigqa emi-3 sakudizayina sakha izakhiwo zamanoveli ezinama-microservices asatshalaliswa kakhulu ukufeza izinsiza zengqalasizinda cishe ezingenamkhawulo zabahlinzeki bamafu bomphakathi. Ngaphezu kwalokho, lawa ma-microservices angabhekelelwa kwimisebenzi ethile ecacile nelula, uma kuqhathaniswa namaseva wohlelo lokusebenza olusindayo olungasasebenzi.
Lezi microservices zisho ukusebenza kahle okungcono ngokwezinsizakusebenza ezisetshenzisiwe, okungenye inzuzo enkulu. Ngaphezu kwalokho, kungenye yezindlela ezinhle kakhulu zokuhambisa lezi zinhlelo zokusebenza ngeziqukathi, sengathi imishini emincane ebonakalayo baphathwa. Yize umehluko omkhulu phakathi kwe-VM nesiqukathi ukuthi owokuqala awunalo uhlelo lokusebenza, esikhundleni salokho usebenza esikhaleni somsebenzisi se-kernel yohlelo olusebenzayo, njengokungathi uhlelo lokusebenza. Lokhu kusho nokuvikeleka okukhulu.
Kepha akuyona yonke into ebizoba yinzuzo, ngoba lokhu kwakhiwa kudinga iziqukathi eziningi (eyodwa ngesevisi ngayinye noma ngaphezulu), okusho ukuthi indlela ezilawulwa ngayo nezilungiswa ngayo ingaba yinkimbinkimbi futhi imele umzamo omkhulu womlawuli wohlelo. Yilapho lapho UKubernetes ungena endaweni yesehlakalo futhi kwenza konke kube lula kakhulu.
Ukubeka indawo yemvelo eKubernetes
AmaKubernetes enza impilo ibe lula kubaphathi, inika amandla ukuphathwa okuzenzakalelayo okuningi kwezinhlelo zokusebenza namasevisi. Uma ufuna ukufaniswa, kungafana neziphathimandla zetheku ku-jetty, eyenza imikhumbi ikwazi ukuhamba ngasikhathi sinye emkhathini. Ngamanye amagama, ekuqaleni, amandla amaKubernetes angaqhathaniswa nalawo weJava EE, ngoba zombili zisebenzisa izinhlelo zokusebenza ku-hardware esabalalisiwe. Kodwa-ke, iziqukathi azinandaba nezidingo zohlelo lokusebenza uqobo.
Nge-Kubernetes, ungalungiselela iqoqo ngokubhala amafayela wokumisa ku- ifomethi yombhalo (ikakhulukazi i-YAML, yize ibuye isekele i-JSON). Ngaphakathi kuzoba nemingcele noma imininingwane yento ngayinye echazwe ukuphathwa.
Izingxenyekazi zekhompuyutha zokumiswa kwendawo kwe-Kubernetes
Ukuze usebenzise ngokunenzuzo i ukusabalalisa okuphezulu nokuthembeka inikezwe yiqoqo leKubernetes, onjiniyela nabaphathi kumele banakekele ukuhlinzeka isitsha ngezinsizakusebenza ezanele ezizosebenza.
Uma iqoqo licatshangelwa ukuthi linama-master node amabili ane-2 GB ye-RAM, ama-cores ama-4, nama-node wezisebenzi ezi-2 ane-1 GB ye-RAM nezinhlamvu ezimbili, lapho-ke iqoqo leKubernetes uzodinga i-6 GB ye-RAM nama-cores ayi-12 ubuncane. Ezinye izinsizakusebenza ezinganikezwa wonke ama-desktop desktop, yize kuliqiniso ukuthi le phrojekthi ayihloselwe ideskithophu.
Noma kunjalo, okwamanje kunezinombolo eziningi ze- izindawo ezincane zokufunda enika amandla onjiniyela ukuthi bathuthuke ngeKubernetes ezindaweni zasendaweni. Izibonelo zazo iMiniKube, iMicroK8s, i-OpenShift CodeReady Cointainers, njll. Zonke zingamaqoqo e-node eyodwa eyodwa ukuze zikwazi ukuba ne-PC yedeskithophu futhi ukufakwa kwayo kungenziwa ngemizuzu embalwa.
Ukuhlola a insizakalo yemvelo eyinkimbinkimbi ngokwengeziwe, imvamisa kufanele uye kuqoqo leqiniso leKubernetes. Kepha ithuluzi Iziqukathi Zekhodi Ezilungele kungenza impilo kanjiniyela ibe lula kakhulu, kufaka phakathi lonke ikhithi lamathuluzi kanye nokufakwa kwe-node eyodwa yeqoqo le-Kubernetes.
Ukwamukelwa komdabu eKubernetes ngumhlaba ohlukile
IKubernetes isizoguqula lonke ulwazi lwabathuthukisi, ababona ukuthi indlela yokuphatha lezi zinsizakalo ihluke kanjani futhi ihlanganiswe ngokuphelele. Ngenxa yalokhu, ukutholwa kweKubernetes sekuyinto isinyathelo esilandelayo esinengqondo maqondana nokwenza lula konjiniyela.
Ngokufanayo, amaKubernetes enza ukuthi kube lula ukuguquguquka okukhulu, ngosizo namathuluzi okukhiqiza omdabu waseKubernetes akhiqizayo, nezinselelo ezintsha ezithokozisayo ...