{"id":936,"date":"2025-06-19T10:50:45","date_gmt":"2025-06-19T07:50:45","guid":{"rendered":"https:\/\/verimin.com.tr\/blog\/?p=936"},"modified":"2026-06-04T10:58:22","modified_gmt":"2026-06-04T07:58:22","slug":"docker-nedir","status":"publish","type":"post","link":"https:\/\/verimin.com.tr\/blog\/docker-nedir\/","title":{"rendered":"Docker Nedir? Neden Docker Kullanmal\u0131s\u0131n\u0131z?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 ez-toc-wrap-left counter-flat ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7erik Ba\u015fl\u0131klar\u0131:<\/div>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Docker_Nedir\" title=\"Docker Nedir?\">Docker Nedir?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Docker_Nasil_Calisir_Konteyner_Mimarisine_Giris\" title=\"Docker Nas\u0131l \u00c7al\u0131\u015f\u0131r? Konteyner Mimarisine Giri\u015f\">Docker Nas\u0131l \u00c7al\u0131\u015f\u0131r? Konteyner Mimarisine Giri\u015f<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Docker_Bilesenleri_Image_Container_Dockerfile_Registry\" title=\"Docker Bile\u015fenleri: Image, Container, Dockerfile, Registry\">Docker Bile\u015fenleri: Image, Container, Dockerfile, Registry<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Docker_Ne_Icin_Kullanilir\" title=\"Docker Ne \u0130\u00e7in Kullan\u0131l\u0131r?\">Docker Ne \u0130\u00e7in Kullan\u0131l\u0131r?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Docker_Kullanmanin_Avantajlari_Nelerdir\" title=\"Docker Kullanman\u0131n Avantajlar\u0131 Nelerdir?\">Docker Kullanman\u0131n Avantajlar\u0131 Nelerdir?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Kubernetes_Nedir\" title=\"Kubernetes Nedir?\">Kubernetes Nedir?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Docker_vs_Kubernetes_Ile_Arasindaki_Farklar\" title=\"Docker vs. Kubernetes \u0130le Aras\u0131ndaki Farklar?\">Docker vs. Kubernetes \u0130le Aras\u0131ndaki Farklar?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/verimin.com.tr\/blog\/docker-nedir\/#Dockeri_Kullanmak_icin_En_Iyi_Uygulamalar_ve_Ipuclari\" title=\"Docker\u2019\u0131 Kullanmak i\u00e7in En \u0130yi Uygulamalar ve \u0130pu\u00e7lar\u0131\">Docker\u2019\u0131 Kullanmak i\u00e7in En \u0130yi Uygulamalar ve \u0130pu\u00e7lar\u0131<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Docker_Nedir\"><\/span><strong>Docker Nedir?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>Docker<\/b><span style=\"font-weight: 400;\">, uygulamalar\u0131n geli\u015ftirilmesi, da\u011f\u0131t\u0131lmas\u0131 ve \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131ran a\u00e7\u0131k kaynakl\u0131 bir platformdur. Bu yap\u0131, yaz\u0131l\u0131m \u00e7\u00f6z\u00fcmlerini altyap\u0131dan ba\u011f\u0131ms\u0131z hale getirerek daha h\u0131zl\u0131 teslimat imk\u00e2n\u0131 sa\u011flar. Docker sayesinde altyap\u0131n\u0131z\u0131, uygulamalar\u0131n\u0131z\u0131 y\u00f6netti\u011finiz sistematik bi\u00e7imde kontrol edebilirsiniz. Yaz\u0131l\u0131m geli\u015ftirme s\u00fcrecindeki kod g\u00f6nderme, test etme ve yay\u0131na alma a\u015famalar\u0131nda Docker\u2019\u0131n sundu\u011fu y\u00f6ntemler sayesinde, geli\u015ftirme ile \u00fcretim ortam\u0131 aras\u0131ndaki zaman fark\u0131 ciddi \u015fekilde azalt\u0131labilir. Peki, <\/span><b>docker nedir ne i\u015fe yarar<\/b><span style=\"font-weight: 400;\">? gelin daha yak\u0131ndan inceleyelim.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Docker_Nasil_Calisir_Konteyner_Mimarisine_Giris\"><\/span><strong>Docker Nas\u0131l \u00c7al\u0131\u015f\u0131r? Konteyner Mimarisine Giri\u015f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Docker, istemci ve sunucudan olu\u015fan bir yap\u0131 kullan\u0131r. Docker istemcisi, kapsay\u0131c\u0131lar\u0131n olu\u015fturulmas\u0131, \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131 ve da\u011f\u0131t\u0131m\u0131 i\u00e7in g\u00f6rev yapan Docker daemon ile haberle\u015fir. Bu istemci, ayn\u0131 sistemdeki daemon ile \u00e7al\u0131\u015fabilece\u011fi gibi, uzaktaki bir Docker daemon\u2019una da ba\u011flanabilir. UNIX soketi veya bir a\u011f ba\u011flant\u0131s\u0131 \u00fczerinden eri\u015filebilen REST API arac\u0131l\u0131\u011f\u0131yla bu iki birim aras\u0131nda ileti\u015fim sa\u011flan\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Konteyner teknolojisi, asl\u0131nda bir t\u00fcr sanalla\u015ft\u0131rma yakla\u015f\u0131m\u0131d\u0131r; ancak burada hypervisor yerine do\u011frudan i\u015fletim sistemi \u00fczerinde bir konteyner motoru yer al\u0131r. Ayn\u0131 i\u015fletim sisteminde birden fazla uygulama veya hizmetin izole \u015fekilde \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131n\u0131 m\u00fcmk\u00fcn k\u0131lar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Her ne kadar g\u00fcn\u00fcm\u00fczde en \u00e7ok tercih edilen konteyner mimarisi Docker olsa da, bu yap\u0131n\u0131n temelleri 2008 y\u0131l\u0131nda yay\u0131mlanan <\/span><b>Linux Containers (LXC)<\/b><span style=\"font-weight: 400;\"> teknolojisine dayan\u0131r. Yani LXC, hypervisor bazl\u0131 sanalla\u015ft\u0131rma \u00e7\u00f6z\u00fcmleri kadar k\u00f6kl\u00fc bir ge\u00e7mi\u015fe sahiptir. Docker, LXC\u2019nin karma\u015f\u0131k i\u015flemlerini otomatik hale getirerek kullan\u0131m kolayl\u0131\u011f\u0131 sunmu\u015f ve h\u0131zla yayg\u0131nla\u015fm\u0131\u015ft\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Yukar\u0131da s\u0131ralanan t\u00fcm bilgiler <\/span><b>docker ne i\u015fe yarar<\/b><span style=\"font-weight: 400;\">? sorusuna kapsaml\u0131 bir cevap niteli\u011findedir.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Docker_Bilesenleri_Image_Container_Dockerfile_Registry\"><\/span><strong>Docker Bile\u015fenleri: Image, Container, Dockerfile, Registry<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Docker, konteyner teknolojisine dayal\u0131 sanalla\u015ft\u0131rma altyap\u0131s\u0131 sunar ve bu yap\u0131y\u0131 olu\u015fturan \u00e7e\u015fitli temel bile\u015fenlerden olu\u015fur. Her bir bile\u015fen, kapsay\u0131c\u0131lar\u0131n in\u015fa edilmesi, \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131 ve y\u00f6netilmesi s\u00fcrecinde kendine \u00f6zg\u00fc roller \u00fcstlenir. T\u00fcrkiye\u2019nin \u00f6nde gelen hosting sa\u011flay\u0131c\u0131lar\u0131ndan biri olan Verimin.com.tr olarak bu b\u00f6l\u00fcmde Docker bile\u015fenlerini detayl\u0131 \u015fekilde ele almaktay\u0131z.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0130lk olarak, <\/span><b>Docker Image<\/b><span style=\"font-weight: 400;\">, bir kapsay\u0131c\u0131n\u0131n \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131 i\u00e7in gerekli yap\u0131land\u0131rmalar\u0131 bar\u0131nd\u0131ran, katmanlardan olu\u015fan bir dosya b\u00fct\u00fcn\u00fcd\u00fcr. Bu imajlar, \u00e7al\u0131\u015ft\u0131r\u0131lacak uygulaman\u0131n ihtiya\u00e7 duydu\u011fu bile\u015fenleri i\u00e7eren \u00e7al\u0131\u015ft\u0131r\u0131labilir paketlerdir. Image, kapsay\u0131c\u0131n\u0131n nas\u0131l olu\u015fturulaca\u011f\u0131, hangi bile\u015fenlerin \u00e7al\u0131\u015faca\u011f\u0131 ve hangi s\u0131rayla \u00e7al\u0131\u015ft\u0131r\u0131laca\u011f\u0131 gibi bilgileri i\u00e7erir.<\/span><\/p>\n<p><b>Docker Container<\/b><span style=\"font-weight: 400;\">, bir imaj\u0131n \u00e7al\u0131\u015ft\u0131r\u0131lm\u0131\u015f ve izole \u015fekilde \u00e7al\u0131\u015fan halidir. Uygulama ile birlikte ihtiya\u00e7 duyulan t\u00fcm ba\u011f\u0131ml\u0131l\u0131klar\u0131 bir arada sunan bu yap\u0131, yaz\u0131l\u0131mlar\u0131n farkl\u0131 sistemlerde tutarl\u0131 bi\u00e7imde \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131na olanak tan\u0131r. \u00d6rne\u011fin, Ubuntu i\u015fletim sistemi \u00fczerinde \u00e7al\u0131\u015fan bir NGINX sunucusu i\u00e7eren bir Docker image\u2019\u0131, \u201cdocker run\u201d komutu ile aktif hale getirildi\u011finde, \u00e7al\u0131\u015f\u0131r durumda bir konteyner olu\u015fturulmu\u015f olur ve NGINX bu ortamda hizmet verir.<\/span><\/p>\n<p><b>Dockerfile<\/b><span style=\"font-weight: 400;\">, bir Docker imaj\u0131 olu\u015fturmak i\u00e7in gereken y\u00f6nergeleri bar\u0131nd\u0131ran metin tabanl\u0131 bir betik dosyas\u0131d\u0131r. Bu dosyada, hangi taban imaj\u0131n kullan\u0131laca\u011f\u0131, hangi dosyalar\u0131n eklenece\u011fi, \u00e7al\u0131\u015ft\u0131r\u0131lacak komutlar ve ayarlanacak ortam de\u011fi\u015fkenleri gibi talimatlar yer al\u0131r. Her sat\u0131r bir katman olu\u015fturur ve bu yap\u0131 sayesinde docker build komutu ile imaj \u00fcretimi sa\u011flanabilir. Dockerfile kullan\u0131m\u0131, yaz\u0131l\u0131m ortamlar\u0131n\u0131n otomatik, tekrarlanabilir ve s\u00fcrd\u00fcr\u00fclebilir \u015fekilde olu\u015fturulmas\u0131na katk\u0131 sunar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peki<\/span><b>, docker compose nedir<\/b><span style=\"font-weight: 400;\">? <\/span><b>Docker Compose<\/b><span style=\"font-weight: 400;\">, birden fazla container i\u00e7eren uygulamalar\u0131 tek tek komutlarla y\u00f6netmek yerine, t\u00fcm servis tan\u0131mlar\u0131n\u0131 i\u00e7eren tek bir YAML yap\u0131land\u0131rma dosyas\u0131 arac\u0131l\u0131\u011f\u0131yla container&#8217;lar\u0131 ve imajlar\u0131 otomatik olarak olu\u015fturup \u00e7al\u0131\u015ft\u0131rmay\u0131 sa\u011flayan pratik bir ara\u00e7t\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Son olarak, <\/span><b>Docker Registry<\/b><span style=\"font-weight: 400;\">, imajlar\u0131n depoland\u0131\u011f\u0131 ve farkl\u0131 sistemlere da\u011f\u0131t\u0131ld\u0131\u011f\u0131 y\u00fcksek performansl\u0131, durumsuz bir sunucu uygulamas\u0131d\u0131r. Kendi sunucunuzda yerel veya \u00f6zel bir registry kullanarak imajlar\u0131 bar\u0131nd\u0131rabilir, eri\u015fimi s\u0131n\u0131rland\u0131rabilir ve internet bant geni\u015fli\u011fi kullan\u0131m\u0131n\u0131z\u0131 azaltabilirsiniz.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Docker_Ne_Icin_Kullanilir\"><\/span><strong>Docker Ne \u0130\u00e7in Kullan\u0131l\u0131r?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Docker, geli\u015ftiricilere uygulama ve hizmetlerini <\/span><b>yerel konteynerler<\/b><span style=\"font-weight: 400;\"> arac\u0131l\u0131\u011f\u0131yla standart h\u00e2le getirilmi\u015f ortamlarda \u00e7al\u0131\u015ft\u0131rma olana\u011f\u0131 vererek yaz\u0131l\u0131m ya\u015fam d\u00f6ng\u00fcs\u00fcn\u00fc \u00f6nemli \u00f6l\u00e7\u00fcde sadele\u015ftirir. Konteyner tabanl\u0131 bu mimari, <\/span><b>S\u00fcrekli Entegrasyon \/ S\u00fcrekli Teslimat\u202f(CI\/CD)<\/b><span style=\"font-weight: 400;\"> s\u00fcre\u00e7leri i\u00e7in son derece elveri\u015flidir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Docker\u2019in \u00e7al\u0131\u015fma prensibini a\u015fa\u011f\u0131daki a\u00e7\u0131klamalarla daha detayl\u0131 bir \u015fekilde ele alabiliriz:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tak\u0131mdaki yaz\u0131l\u0131mc\u0131lar kodlar\u0131n\u0131 kendi makinelerinde \u00fcretir ve olu\u015fturduklar\u0131 Docker konteynerlerini ekip arkada\u015flar\u0131yla kolayca payla\u015f\u0131r.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0130lgili uygulamalar, hem otomatik hem de manuel testlerin y\u00fcr\u00fct\u00fcld\u00fc\u011f\u00fc bir s\u0131nama sahnesine Docker sayesinde aktar\u0131l\u0131r.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hata saptand\u0131\u011f\u0131nda geli\u015ftirici, problemi kendi geli\u015ftirme ortam\u0131nda giderir ve do\u011frulama i\u00e7in g\u00fcncellenmi\u015f konteyneri test katman\u0131na yeniden yollar.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Testler ba\u015far\u0131yla sonu\u00e7land\u0131\u011f\u0131nda, d\u00fczeltmenin m\u00fc\u015fteriye ula\u015fmas\u0131, yaln\u0131zca g\u00fcncellenmi\u015f imaj\u0131 \u00fcretim ortam\u0131na g\u00f6ndermek kadar zahmetsizdir.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Docker_Kullanmanin_Avantajlari_Nelerdir\"><\/span><strong>Docker Kullanman\u0131n Avantajlar\u0131 Nelerdir?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Docker kullanman\u0131n ba\u015fl\u0131ca avantajlar\u0131 a\u015fa\u011f\u0131daki \u015fekilde s\u0131ralanmaktad\u0131r:<\/span><\/p>\n<p><b>Ta\u015f\u0131nabilirlik<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Docker\u2019\u0131n \u00e7arp\u0131c\u0131 y\u00f6nlerinden biri, konteynerlerin uygulama ile t\u00fcm ba\u011f\u0131ml\u0131l\u0131klar\u0131n\u0131 tek bir paket i\u00e7inde sunmas\u0131d\u0131r. B\u00f6ylece yerel diz\u00fcst\u00fc bilgisayar\u0131n\u0131zda, \u015firket i\u00e7i sunucuda ya da bulut altyap\u0131s\u0131nda olman\u0131z fark etmeksizin ayn\u0131 g\u00f6r\u00fcnt\u00fc ayn\u0131 bi\u00e7imde \u00e7al\u0131\u015f\u0131r; t\u00fcm a\u015famalarda ortam tutarl\u0131l\u0131\u011f\u0131 korunur.<\/span><\/p>\n<p><b>Yal\u0131t\u0131m<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Her konteyner, i\u00e7inde bar\u0131nd\u0131rd\u0131\u011f\u0131 s\u00fcre\u00e7leri di\u011fer kapsay\u0131c\u0131lardan ba\u011f\u0131ms\u0131z olarak y\u00fcr\u00fct\u00fcr. Bu y\u00fcksek izolasyon seviyesi, ayn\u0131 fiziksel makine \u00fczerinde \u00e7al\u0131\u015fan uygulamalar\u0131n birbirini etkilemesini \u00f6nler ve g\u00fcvenli\u011fi art\u0131r\u0131rken \u00e7ak\u0131\u015fmalar\u0131n da \u00f6n\u00fcne ge\u00e7er.<\/span><\/p>\n<p><b>Kaynak Verimlili\u011fi<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Geleneksel sanal makineler t\u00fcm i\u015fletim sistemini kopyalarken, Docker konteynerleri ortak bir \u00e7ekirdek kullan\u0131r. Bu sayede daha hafif, az RAM ve disk alan\u0131 gerektirir; ayn\u0131 donan\u0131m \u00fczerinde daha fazla hizmetin bar\u0131nd\u0131r\u0131lmas\u0131na olanak tan\u0131r ve altyap\u0131 maliyetlerini d\u00fc\u015f\u00fcr\u00fcr.<\/span><\/p>\n<p><b>\u00d6l\u00e7eklenebilirlik<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Docker, y\u00fck artt\u0131\u011f\u0131nda tek bir kapsay\u0131c\u0131y\u0131 \u00e7o\u011faltmaya ve Kubernetes ya da Docker Swarm gibi orkestrasyon ara\u00e7lar\u0131yla trafi\u011fi dengeli bi\u00e7imde da\u011f\u0131tmaya imk\u00e2n verir. B\u00f6ylece talebe ba\u011fl\u0131 olarak kapasiteyi h\u0131zla art\u0131r\u0131p azaltmak m\u00fcmk\u00fcn olur; bu durum yo\u011fun istek alan sistemler i\u00e7in hayati \u00f6nem ta\u015f\u0131r.<\/span><\/p>\n<p><b>Daha H\u0131zl\u0131 Geli\u015ftirme ve Da\u011f\u0131t\u0131m<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Konteynerler sayesinde geli\u015ftiriciler, \u00fcretim ortam\u0131yla birebir ayn\u0131 konfig\u00fcrasyona sahip yerel alanlarda \u00e7al\u0131\u015fabilir ve olu\u015fabilecek uyumluluk sorunlar\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde ortadan kalkar. Ayr\u0131ca da\u011f\u0131t\u0131m s\u00fcre\u00e7leri otomatikle\u015ftirildi\u011fi i\u00e7in teslimat d\u00f6ng\u00fcs\u00fc k\u0131sal\u0131r, hatalar azal\u0131r ve piyasaya s\u00fcr\u00fcm s\u00fcresi ciddi bi\u00e7imde h\u0131zlan\u0131r.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Kubernetes_Nedir\"><\/span><strong>Kubernetes Nedir?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Kubernetes, ad\u0131n\u0131 Yunanca &#8220;d\u00fcmenci&#8221; veya &#8220;rehber&#8221; anlam\u0131na gelen kelimeden al\u0131r. Teknoloji d\u00fcnyas\u0131nda s\u0131k\u00e7a k8s k\u0131saltmas\u0131yla kar\u015f\u0131la\u015f\u0131l\u0131r; bu k\u0131saltma, ba\u015ftaki \u201ck\u201d ve sondaki \u201cs\u201d harfleri aras\u0131nda yer alan sekiz harfin \u00f6zetlenmesinden olu\u015fur.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Kubernetes, Google taraf\u0131ndan Go programlama dili kullan\u0131larak geli\u015ftirilmi\u015f ve \u015fu an Cloud Native Computing Foundation (CNCF) taraf\u0131ndan s\u00fcrd\u00fcr\u00fclen bir a\u00e7\u0131k kaynak konteyner orkestrasyon platformudur. Bu sistem, mevcut container tabanl\u0131 uygulamalar\u0131n\u0131z\u0131 otomatik olarak da\u011f\u0131tman\u0131za, istenilen \u00f6l\u00e7\u00fcde art\u0131r\u0131p azaltman\u0131za ve bunlar\u0131 sistemli bi\u00e7imde y\u00f6netmenize imk\u00e2n tan\u0131r. 2014 y\u0131l\u0131nda ilk kez duyurulan bu proje, bug\u00fcn itibar\u0131yla en son 1.22 s\u00fcr\u00fcm\u00fcne sahiptir.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Docker_vs_Kubernetes_Ile_Arasindaki_Farklar\"><\/span><strong>Docker vs. Kubernetes \u0130le Aras\u0131ndaki Farklar?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Docker ve Kubernetes her ikisi de a\u00e7\u0131k kaynakl\u0131 container \u00e7\u00f6z\u00fcmleri sunar. Ancak, temel g\u00f6revleri ve uygulama da\u011f\u0131t\u0131m\u0131ndaki rolleri a\u00e7\u0131s\u0131ndan ciddi farkl\u0131l\u0131klar bar\u0131nd\u0131r\u0131rlar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Docker, daha \u00e7ok container imajlar\u0131n\u0131n olu\u015fturulmas\u0131 ve \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131 a\u015famas\u0131nda tercih edilirken, Kubernetes b\u00fcy\u00fck \u00f6l\u00e7ekli sistemlerde bu container\u2019lar\u0131n organizasyonu ve y\u00f6netiminde devreye girer. Modern yaz\u0131l\u0131m mimarilerinde her mikro hizmet \u00e7o\u011funlukla birka\u00e7 container\u2019dan olu\u015fur ve bu yap\u0131 Kubernetes taraf\u0131ndan organize edilir.<\/span><\/p>\n<p><strong>Operasyonel Kullan\u0131m<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Docker, geli\u015ftiricilere a\u015fa\u011f\u0131daki ara\u00e7larla container\u2019l\u0131 uygulama y\u00f6netimi sa\u011flar:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">docker build: Yeni imajlar olu\u015fturur.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">docker compose: \u00c7oklu container\u2019l\u0131 servisleri tan\u0131mlar ve \u00e7al\u0131\u015ft\u0131r\u0131r.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">docker hub: \u0130maj payla\u015f\u0131m\u0131 ve da\u011f\u0131t\u0131m\u0131 i\u00e7in merkezi bir platform sunar.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Kubernetes ise container\u2019lar\u0131 k\u00fcme \u00fczerindeki kaynaklara g\u00f6re da\u011f\u0131t\u0131r. Uygulamalar, pod ad\u0131 verilen mant\u0131ksal birimlerde gruplanarak \u00e7al\u0131\u015ft\u0131r\u0131l\u0131r. Her pod bir veya birden fazla container bar\u0131nd\u0131rabilir. Y\u00fck art\u0131\u015f\u0131na g\u00f6re Kubernetes, otomatik \u015fekilde yeni pod&#8217;lar devreye alabilir.<\/span><\/p>\n<p><strong>Temel Mimariler<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Docker Engine, uygulama geli\u015ftiricilerin uygulamalar\u0131n\u0131 imaj haline getirmelerini sa\u011flayan temel altyap\u0131d\u0131r ve belirli API&#8217;ler arac\u0131l\u0131\u011f\u0131yla d\u0131\u015f sistemlerle haberle\u015fir. Kubernetes\u2019in kontrol d\u00fczlemi (control plane) ise, hangi pod\u2019un ne zaman \u00e7al\u0131\u015faca\u011f\u0131na karar verir, trafik y\u00f6netimini sa\u011flar ve sistem kaynaklar\u0131na g\u00f6re dinamik \u00f6l\u00e7eklendirme yapar.<\/span><\/p>\n<p><strong>G\u00fc\u00e7l\u00fc Y\u00f6nleri<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Docker, standartla\u015ft\u0131r\u0131lm\u0131\u015f bir geli\u015ftirme ortam\u0131 sunarak uygulamalar\u0131n kolay ta\u015f\u0131nmas\u0131n\u0131 ve her platformda ayn\u0131 bi\u00e7imde \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flar. Kubernetes ise, \u00f6zellikle karma\u015f\u0131k mikro hizmet mimarilerine sahip uygulamalar\u0131n b\u00fcy\u00fck \u00e7apl\u0131 ortamlarda kesintisiz ve \u00f6l\u00e7eklenebilir \u015fekilde \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131n\u0131 m\u00fcmk\u00fcn k\u0131lar.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dockeri_Kullanmak_icin_En_Iyi_Uygulamalar_ve_Ipuclari\"><\/span><strong>Docker\u2019\u0131 Kullanmak i\u00e7in En \u0130yi Uygulamalar ve \u0130pu\u00e7lar\u0131<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Docker ile \u00e7al\u0131\u015f\u0131rken, sistem verimlili\u011fini ve g\u00fcvenli\u011fini art\u0131rmak ad\u0131na \u00e7e\u015fitli uygulama kurallar\u0131n\u0131 benimsemek kritik \u00f6nem ta\u015f\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ba\u015flang\u0131\u00e7 olarak, kullan\u0131lan imajlar\u0131n g\u00fcvenilir ve resmi kaynaklardan se\u00e7ilmesi gerekir. K\u00fc\u00e7\u00fck boyutlu ve s\u0131k g\u00fcncellenen imajlar hem g\u00fcvenlik tehditlerini azalt\u0131r hem de performans\u0131 art\u0131r\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Dockerfile yazarken yal\u0131nl\u0131k esast\u0131r. Gereksiz katmanlar olu\u015fturmaktan ka\u00e7\u0131n\u0131lmal\u0131, RUN komutlar\u0131 tek bir sat\u0131ra birle\u015ftirilmeli ve yaln\u0131zca ihtiya\u00e7 duyulan ba\u011f\u0131ml\u0131l\u0131klar sisteme dahil edilmelidir. Bu sayede build s\u00fcresi k\u0131sal\u0131r ve imaj boyutu optimize edilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">G\u00fcvenlik i\u00e7in, konteynerlerin root kullan\u0131c\u0131s\u0131 ile de\u011fil, s\u0131n\u0131rl\u0131 yetkilere sahip kullan\u0131c\u0131larla \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131 \u00f6nerilir. A\u011f ayarlar\u0131 \u00f6zenle yap\u0131land\u0131r\u0131lmal\u0131, sadece ihtiya\u00e7 duyulan portlar a\u00e7\u0131lmal\u0131 ve g\u00fcvenlik duvar\u0131 politikalar\u0131 uygulanmal\u0131d\u0131r. Ayr\u0131ca sistem, d\u00fczenli olarak g\u00fcncellenmeli ve g\u00fcvenlik taramalar\u0131na tabi tutulmal\u0131d\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Kaynaklar\u0131n daha verimli kullan\u0131lmas\u0131 i\u00e7in, her konteynerin CPU, RAM ve disk kullan\u0131m\u0131 belirli s\u0131n\u0131rlar i\u00e7inde tutulmal\u0131d\u0131r. Ayr\u0131ca, loglama ve monitoring ara\u00e7lar\u0131 yard\u0131m\u0131yla performans izlenmeli, kullan\u0131lmayan veya gereksiz \u00e7al\u0131\u015fan konteynerler sistemden temizlenmelidir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Docker, CI\/CD s\u00fcre\u00e7leriyle entegre \u00e7al\u0131\u015fabildi\u011finden, uygulama imajlar\u0131n\u0131n olu\u015fturulmas\u0131, test edilmesi ve yay\u0131nlanmas\u0131 otomatikle\u015ftirilebilir. Bu da geli\u015ftirme s\u00fcre\u00e7lerini h\u0131zland\u0131r\u0131r ve hatalar\u0131 azalt\u0131r. Versiyon kontrol\u00fc sayesinde farkl\u0131 s\u00fcr\u00fcmler kolayca izlenebilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Son olarak, konteynerlerin \u00e7al\u0131\u015faca\u011f\u0131 bar\u0131nd\u0131rma altyap\u0131s\u0131 dikkatle se\u00e7ilmelidir. Eri\u015filebilirlik, g\u00fcvenlik, teknik destek gibi fakt\u00f6rler g\u00f6z \u00f6n\u00fcnde bulundurularak <a href=\"https:\/\/verimin.com.tr\/\">Verimin<\/a> gibi g\u00fcvenilir sa\u011flay\u0131c\u0131lar tercih edilebilir.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Docker Nedir? Docker, uygulamalar\u0131n geli\u015ftirilmesi, da\u011f\u0131t\u0131lmas\u0131 ve \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131ran a\u00e7\u0131k kaynakl\u0131 bir platformdur. Bu yap\u0131,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":937,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-936","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts\/936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=936"}],"version-history":[{"count":2,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts\/936\/revisions"}],"predecessor-version":[{"id":1232,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/posts\/936\/revisions\/1232"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/media\/937"}],"wp:attachment":[{"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/verimin.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}