{"id":201,"date":"2026-04-17T12:00:00","date_gmt":"2026-04-17T12:00:00","guid":{"rendered":"https:\/\/konteynerium.com\/?p=201"},"modified":"2026-10-06T11:34:00","modified_gmt":"2026-10-06T11:34:00","slug":"docker-nedir-container-dunyasina-giris","status":"publish","type":"post","link":"https:\/\/konteynerium.com\/index.php\/2026\/04\/17\/docker-nedir-container-dunyasina-giris\/","title":{"rendered":"Docker Nedir? Container D\u00fcnyas\u0131na Giri\u015f"},"content":{"rendered":"

Bir uygulamay\u0131 kendi bilgisayar\u0131n\u0131zda sorunsuz \u00e7al\u0131\u015ft\u0131r\u0131p meslekta\u015f\u0131n\u0131z\u0131n makinesinde “bende \u00e7al\u0131\u015f\u0131yordu ama…” demek, yaz\u0131l\u0131m d\u00fcnyas\u0131n\u0131n en eski \u015fakalar\u0131ndan biridir. Docker, tam olarak bu sorunu \u00e7\u00f6zmek i\u00e7in ortaya \u00e7\u0131kt\u0131: bir uygulamay\u0131, \u00e7al\u0131\u015fmas\u0131 i\u00e7in gereken her \u015feyle birlikte tek bir paket<\/strong> haline getirip, o paketi hangi ortamda \u00e7al\u0131\u015ft\u0131r\u0131rsan\u0131z \u00e7al\u0131\u015ft\u0131r\u0131n ayn\u0131 \u015fekilde davranmas\u0131n\u0131 sa\u011flar.<\/p>\n

Container nedir?<\/h2>\n

Container (konteyner), bir uygulaman\u0131n kodunu, k\u00fct\u00fcphanelerini, ba\u011f\u0131ml\u0131l\u0131klar\u0131n\u0131 ve \u00e7al\u0131\u015fma zaman\u0131 ayarlar\u0131n\u0131 tek bir izole birimde toplayan hafif bir paketleme bi\u00e7imidir. “Konteyner” ismi tesad\u00fcf de\u011fil: t\u0131pk\u0131 bir nakliye konteynerinin i\u00e7ine ne koyarsan\u0131z koyun, gemide, trende veya kamyonda ayn\u0131 standart \u015fekilde ta\u015f\u0131nabilmesi gibi, bir yaz\u0131l\u0131m container’\u0131 da i\u00e7inde ne olursa olsun herhangi bir sunucuda ayn\u0131 \u015fekilde \u00e7al\u0131\u015f\u0131r.<\/p>\n

\n i<\/span><\/p>\n

Container, sanal makineden farkl\u0131 olarak kendi i\u015fletim sistemi \u00e7ekirde\u011fini ta\u015f\u0131maz; ana makinenin (host) \u00e7ekirde\u011fini payla\u015f\u0131r. Bu da container’lar\u0131 inan\u0131lmaz derecede hafif ve h\u0131zl\u0131 ba\u015flat\u0131labilir hale getirir. Container vs VM fark\u0131n\u0131 bir sonraki yaz\u0131da detayl\u0131 i\u015fliyoruz.<\/p>\n<\/div>\n

Docker’\u0131n rol\u00fc ne?<\/h2>\n

Docker, container teknolojisini kullan\u0131c\u0131 dostu hale getiren ara\u00e7 ve platform b\u00fct\u00fcn\u00fcd\u00fcr. Linux \u00e7ekirde\u011finde uzun s\u00fcredir var olan namespaces<\/code> ve cgroups<\/code> gibi izolasyon mekanizmalar\u0131n\u0131, geli\u015ftiricilerin birka\u00e7 komutla kullanabilece\u011fi basit bir aray\u00fcze d\u00f6n\u00fc\u015ft\u00fcrd\u00fc. 2013’te a\u00e7\u0131k kaynak olarak yay\u0131nlanmas\u0131ndan bu yana, container’lar\u0131 neredeyse herkesin diline yerle\u015ftiren proje oldu.<\/p>\n

Docker mimarisinin \u00fc\u00e7 temel par\u00e7as\u0131<\/h3>\n
    \n
  • Docker \u0130maj\u0131 (Image):<\/strong> Uygulaman\u0131z\u0131n ve ba\u011f\u0131ml\u0131l\u0131klar\u0131n\u0131n salt-okunur bir anl\u0131k g\u00f6r\u00fcnt\u00fcs\u00fc. Bir tarif gibi d\u00fc\u015f\u00fcnebilirsiniz.<\/li>\n
  • Docker Container:<\/strong> \u0130maj\u0131n \u00e7al\u0131\u015fan bir \u00f6rne\u011fi. Ayn\u0131 tarifden istedi\u011finiz kadar kopya (container) ba\u015flatabilirsiniz.<\/li>\n
  • Docker Daemon & CLI:<\/strong> Arka planda \u00e7al\u0131\u015fan dockerd<\/code> servisi image’lar\u0131 ve container’lar\u0131 y\u00f6netir; siz de docker<\/code> komut sat\u0131r\u0131 arac\u0131yla onunla konu\u015fursunuz.<\/li>\n<\/ul>\n

    \u0130lk container’\u0131n\u0131z\u0131 \u00e7al\u0131\u015ft\u0131rmak<\/h2>\n

    Docker kurulduktan sonra, tek bir komutla resmi bir imaj\u0131 indirip \u00e7al\u0131\u015ft\u0131rabilirsiniz:<\/p>\n

    docker run --rm hello-world<\/code><\/pre>\n
    Bu komut \u015fu ad\u0131mlar\u0131 izler: Docker \u00f6nce hello-world<\/code> imaj\u0131n\u0131n yerelde olup olmad\u0131\u011f\u0131na bakar, yoksa Docker Hub’dan indirir, ard\u0131ndan bu imajdan yeni bir container ba\u015flat\u0131r. --rm<\/code> bayra\u011f\u0131, container i\u015fini bitirince kendini otomatik silmesini sa\u011flar.<\/p>\n
    Daha ger\u00e7ek\u00e7i bir \u00f6rnek olarak, bir Nginx web sunucusunu arka planda aya\u011fa kald\u0131ral\u0131m:<\/p>\n
    docker run -d --name ilk-sunucum -p 8080:80 nginx:alpine<\/code><\/pre>\n
    Art\u0131k taray\u0131c\u0131n\u0131zdan localhost:8080<\/code> adresine gidip Nginx’in kar\u015f\u0131lama sayfas\u0131n\u0131 g\u00f6rebilirsiniz \u2014 ve bu sunucu, ana makinenize hi\u00e7bir \u015fey kurmadan, tamamen izole bir container i\u00e7inde \u00e7al\u0131\u015f\u0131yor.<\/p>\n
    Neden \u00f6nemli?<\/h2>\n
    Docker’\u0131n yayg\u0131nla\u015fmas\u0131n\u0131n arkas\u0131ndaki as\u0131l neden, “geli\u015ftirme ortam\u0131 = production ortam\u0131” e\u015fitli\u011fini pratik hale getirmesidir. Bir geli\u015ftirici kendi makinesinde \u00e7al\u0131\u015fan container’\u0131, aynen production sunucusuna ta\u015f\u0131yabilir. Bu, da\u011f\u0131t\u0131m (deployment) s\u00fcre\u00e7lerini basitle\u015ftirir, ortam kaynakl\u0131 hatalar\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azalt\u0131r ve mikroservis mimarilerinin \u00f6n\u00fcn\u00fc a\u00e7ar.<\/p>\n
    S\u0131radaki yaz\u0131da container’lar\u0131n sanal makinelerden (VM) nas\u0131l farkl\u0131la\u015ft\u0131\u011f\u0131na, kaynak kullan\u0131m\u0131ndan izolasyon seviyesine kadar detayl\u0131 bakaca\u011f\u0131z.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Docker’\u0131n ne oldu\u011funu, container kavram\u0131n\u0131n nereden geldi\u011fini ve ilk container’\u0131n\u0131z\u0131 nas\u0131l \u00e7al\u0131\u015ft\u0131raca\u011f\u0131n\u0131z\u0131 temelden \u00f6\u011frenin.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"seviye":[7],"class_list":["post-201","post","type-post","status-publish","format-standard","hentry","category-temel-kavramlar","seviye-baslangic"],"_links":{"self":[{"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/posts\/201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/comments?post=201"}],"version-history":[{"count":1,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/posts\/201\/revisions"}],"predecessor-version":[{"id":564,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/posts\/201\/revisions\/564"}],"wp:attachment":[{"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/media?parent=201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/categories?post=201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/tags?post=201"},{"taxonomy":"seviye","embeddable":true,"href":"https:\/\/konteynerium.com\/index.php\/wp-json\/wp\/v2\/seviye?post=201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}