{"id":30062,"date":"2025-09-23T02:42:32","date_gmt":"2025-09-22T23:42:32","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/centos-7de-cloudflare-dogrulamasiyla-lets-encrypt-wildcard-ssl-sertifikalari-nasil-alinir\/"},"modified":"2025-09-23T02:42:32","modified_gmt":"2025-09-22T23:42:32","slug":"centos-7de-cloudflare-dogrulamasiyla-lets-encrypt-wildcard-ssl-sertifikalari-nasil-alinir","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/centos-7de-cloudflare-dogrulamasiyla-lets-encrypt-wildcard-ssl-sertifikalari-nasil-alinir\/","title":{"rendered":"CentOS 7&#8217;de CloudFlare Do\u011frulamas\u0131yla Let&#8217;s Encrypt Wildcard SSL Sertifikalar\u0131 Nas\u0131l Al\u0131n\u0131r"},"content":{"rendered":"<p># CentOS 7&#8217;de CloudFlare Do\u011frulamas\u0131yla Let&#8217;s Encrypt Wildcard SSL Sertifikalar\u0131 Nas\u0131l Al\u0131n\u0131r?<\/p>\n<p><strong>Meta A\u00e7\u0131klamas\u0131:<\/strong> CentOS 7 sunucular\u0131n\u0131z i\u00e7in Let&#8217;s Encrypt Wildcard SSL sertifikalar\u0131n\u0131 CloudFlare do\u011frulamas\u0131yla nas\u0131l kolayca edinebilece\u011finizi ad\u0131m ad\u0131m \u00f6\u011frenin. G\u00fcvenli bir web sitesi i\u00e7in ihtiya\u00e7 duydu\u011funuz t\u00fcm ad\u0131mlar\u0131 ve ipu\u00e7lar\u0131n\u0131 bu makalede bulacaks\u0131n\u0131z.  G\u00fcvenli\u011finizi art\u0131r\u0131n ve ziyaret\u00e7ilerinizin g\u00fcvenini kazan\u0131n!<\/p>\n<p>G\u00fcn\u00fcm\u00fczde g\u00fcvenli bir web sitesi sahibi olmak, ziyaret\u00e7ilerin g\u00fcvenini kazanmak ve arama motorlar\u0131nda \u00fcst s\u0131ralarda yer almak i\u00e7in olmazsa olmazd\u0131r.  HTTPS protokol\u00fc, bunu sa\u011flaman\u0131n en etkili yoludur ve bu protokol\u00fc etkinle\u015ftirmek i\u00e7in SSL sertifikalar\u0131 gereklidir.  \u00d6zellikle wildcard sertifikalar, bir alan ad\u0131 ve alt alan adlar\u0131n\u0131n tamam\u0131n\u0131 g\u00fcvence alt\u0131na alarak y\u00f6netimi kolayla\u015ft\u0131r\u0131r. Bu makalede, CentOS 7 sunucular\u0131n\u0131zda CloudFlare&#8217;\u0131 kullanarak Let&#8217;s Encrypt&#8217;ten wildcard SSL sertifikalar\u0131 alman\u0131n ad\u0131m ad\u0131m yol haritas\u0131n\u0131 ele alaca\u011f\u0131z.<\/p>\n<p><strong>Temel Kavramlar: Let&#8217;s Encrypt, CloudFlare ve Wildcard Sertifikalar<\/strong><\/p>\n<p>\u00d6ncelikle, baz\u0131 temel kavramlar\u0131 anlamak \u00f6nemlidir.  Let&#8217;s Encrypt, \u00fccretsiz ve otomatik SSL sertifikalar\u0131 sa\u011flayan a\u00e7\u0131k kaynak bir otoritedir.  CloudFlare, bir CDN (Content Delivery Network) ve g\u00fcvenlik hizmeti sa\u011flay\u0131c\u0131s\u0131d\u0131r.  Wildcard sertifikalar ise <code class=\"language-\">*.ornek.com<\/code> gibi bir y\u0131ld\u0131z i\u015fareti (*) kullanarak bir alan ad\u0131 ve t\u00fcm alt alan adlar\u0131n\u0131 (\u00f6rne\u011fin, <code class=\"language-\">blog.ornek.com<\/code>, <code class=\"language-\">www.ornek.com<\/code>) kapsayan SSL sertifikalar\u0131d\u0131r.  Bu, tek bir sertifika ile birden fazla alt alan ad\u0131n\u0131 g\u00fcvence alt\u0131na alarak zaman ve kaynak tasarrufu sa\u011flar.<\/p>\n<p><strong>Certbot&#8217;u CentOS 7&#8217;ye Kurma: \u0130lk Ad\u0131mlar<\/strong><\/p>\n<p>Let&#8217;s Encrypt sertifikalar\u0131n\u0131 almak i\u00e7in Certbot adl\u0131 bir ara\u00e7 kullanaca\u011f\u0131z.  Bu ara\u00e7, sertifika alma s\u00fcrecini otomatikle\u015ftirir. \u0130lk ad\u0131m olarak, Certbot&#8217;u sisteminize kurmal\u0131y\u0131z.  Bunun i\u00e7in \u00f6ncelikle gerekli paketleri g\u00fcncelleyelim:<\/p>\n<pre class=\"language-bash\"><code>sudo yum update<\/code><\/pre>\n<p>Ard\u0131ndan, EPEL (Extra Packages for Enterprise Linux) deposunu eklemeliyiz. Bu depo, Certbot&#8217;un kurulumu i\u00e7in gerekli olan ba\u011f\u0131ml\u0131l\u0131klar\u0131 i\u00e7erir:<\/p>\n<pre class=\"language-bash\"><code>sudo yum install epel-release<\/code><\/pre>\n<p>Son olarak, Certbot&#8217;u kurabiliriz:<\/p>\n<pre class=\"language-bash\"><code>sudo yum install certbot python2-certbot-apache<\/code><\/pre>\n<p><strong>CloudFlare DNS Do\u011frulamas\u0131 \u0130\u00e7in Haz\u0131rl\u0131k: DNS Kay\u0131tlar\u0131<\/strong><\/p>\n<p>Certbot&#8217;un CloudFlare \u00fczerinden do\u011frulama yapabilmesi i\u00e7in, CloudFlare hesab\u0131n\u0131zda baz\u0131 DNS kay\u0131tlar\u0131 olu\u015fturman\u0131z gerekecektir.  Bu kay\u0131tlar, Certbot&#8217;un sizin yetkili oldu\u011funuzu do\u011frulamas\u0131n\u0131 sa\u011flar.  CloudFlare kontrol paneline giri\u015f yap\u0131n ve alan ad\u0131n\u0131z i\u00e7in DNS kay\u0131tlar\u0131n\u0131 y\u00f6netin.  Certbot,  <code class=\"language-\">_acme-challenge.<alanad\u0131n\u0131z><\/code> gibi bir kay\u0131t olu\u015fturman\u0131z\u0131 isteyecektir. Bu kay\u0131t ge\u00e7ici olup, sertifika alma i\u015flemi tamamland\u0131ktan sonra silinecektir.  Bu ad\u0131mlar Certbot&#8217;un \u00e7\u0131kt\u0131s\u0131nda ayr\u0131nt\u0131l\u0131 olarak belirtilecektir.<\/p>\n<p><strong>Certbot ile Wildcard Sertifika Alma: Uygulamal\u0131 K\u0131lavuz<\/strong><\/p>\n<p>\u015eimdi, en \u00f6nemli ad\u0131m olan wildcard sertifikan\u0131z\u0131 almaya ba\u015flayabiliriz.  A\u015fa\u011f\u0131daki komutu \u00e7al\u0131\u015ft\u0131r\u0131n:<\/p>\n<pre class=\"language-bash\"><code>sudo certbot certonly --webroot -w \/var\/www\/html -d *.ornek.com --manual --preferred-challenges dns --server https:\/\/acme-v02.api.letsencrypt.org\/directory<\/code><\/pre>\n<p>Bu komutta:<\/p>\n<p>* <code class=\"language-\">--webroot<\/code>: Webroot do\u011frulama y\u00f6ntemini kullanaca\u011f\u0131m\u0131z\u0131 belirtir.<br \/>\n* <code class=\"language-\">-w \/var\/www\/html<\/code>: Webroot dizininin <code class=\"language-\">\/var\/www\/html<\/code> oldu\u011funu belirtir (bu, Apache&#8217;in varsay\u0131lan webroot dizinidir.  Nginx kullan\u0131yorsan\u0131z, buna g\u00f6re ayarlaman\u0131z gerekecektir).<br \/>\n* <code class=\"language-\">-d *.ornek.com<\/code>: Wildcard sertifikas\u0131n\u0131n <code class=\"language-\">*.ornek.com<\/code> i\u00e7in ge\u00e7erli olaca\u011f\u0131n\u0131 belirtir.  <code class=\"language-\">ornek.com<\/code> yerine kendi alan ad\u0131n\u0131z\u0131 kullan\u0131n.<br \/>\n* <code class=\"language-\">--manual<\/code>: Manuel do\u011frulama y\u00f6ntemini kullanaca\u011f\u0131m\u0131z\u0131 belirtir.<br \/>\n* <code class=\"language-\">--preferred-challenges dns<\/code>: DNS do\u011frulama y\u00f6ntemini tercih etti\u011fimizi belirtir.<br \/>\n* <code class=\"language-\">--server https:\/\/acme-v02.api.letsencrypt.org\/directory<\/code>: Let&#8217;s Encrypt API sunucusunu belirtir.<\/p>\n<p>Certbot, size <code class=\"language-\">_acme-challenge.<alanad\u0131n\u0131z><\/code> i\u00e7in olu\u015fturman\u0131z gereken TXT kayd\u0131n\u0131 ve de\u011feri g\u00f6sterecektir.  Bu de\u011feri CloudFlare kontrol panelinde ilgili kayd\u0131 olu\u015fturmak i\u00e7in kullan\u0131n.  Kayd\u0131 olu\u015fturduktan sonra, Certbot&#8217;a devam etmek i\u00e7in <code class=\"language-\">Enter<\/code> tu\u015funa bas\u0131n.  Certbot, sertifikay\u0131 ba\u015far\u0131yla olu\u015fturdu\u011funda size bildirim g\u00f6nderecektir.<\/p>\n<p><strong># \u00d6\u011frenme Yol Haritas\u0131<\/strong><\/p>\n<p><strong>Yeni Ba\u015flayan:<\/strong> Yukar\u0131daki ad\u0131mlar\u0131 takip ederek, basit bir wildcard sertifika alma i\u015flemini tamamlayabilirsiniz.  Bu a\u015famada, temel komutlar\u0131 anlamak ve i\u015flemleri s\u0131rayla uygulamak yeterlidir.<\/p>\n<p><strong>Orta:<\/strong> Farkl\u0131 web sunucular\u0131 (Nginx) i\u00e7in do\u011frulama y\u00f6ntemlerini ve konfig\u00fcrasyonlar\u0131n\u0131 inceleyin.  Daha karma\u015f\u0131k alan adlar\u0131 ve alt alan adlar\u0131 i\u00e7in sertifika almay\u0131 deneyin.  Certbot&#8217;un <code class=\"language-\">--dry-run<\/code> se\u00e7ene\u011fini kullanarak, ger\u00e7ek bir sertifika olu\u015fturmadan \u00f6nce i\u015flemi sim\u00fcle edin.  Sertifika yenileme i\u015flemlerini otomatikle\u015ftirmek i\u00e7in cron job kullanmay\u0131 \u00f6\u011frenin.<\/p>\n<p><strong>\u0130leri D\u00fczey:<\/strong>  Certbot&#8217;un performans\u0131n\u0131 analiz edin ve farkl\u0131 do\u011frulama y\u00f6ntemlerinin performans\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131r\u0131n.  Nadir g\u00f6r\u00fclen durumlar (edge cases) i\u00e7in \u00e7\u00f6z\u00fcm yollar\u0131 bulun.  \u00d6rne\u011fin, DNS kay\u0131tlar\u0131n\u0131n yay\u0131lmas\u0131 i\u00e7in gereken s\u00fcreyi g\u00f6z \u00f6n\u00fcnde bulundurarak, olas\u0131 hatalar\u0131 ve \u00e7\u00f6z\u00fcm yollar\u0131n\u0131 ara\u015ft\u0131r\u0131n.  G\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 \u00f6nlemek i\u00e7in en iyi uygulamalar\u0131 uygulay\u0131n.<\/p>\n<p><strong>Sertifikan\u0131n Apache veya Nginx ile Entegre Edilmesi<\/strong><\/p>\n<p>Sertifika ba\u015far\u0131yla olu\u015fturulduktan sonra, Apache veya Nginx web sunucunuza entegre etmeniz gerekir.  Bu i\u015flem, web sunucunuzun konfig\u00fcrasyon dosyas\u0131n\u0131 d\u00fczenleyerek yap\u0131l\u0131r.  Certbot, genellikle bu i\u015flemi otomatik olarak yapar, ancak manuel olarak yapman\u0131z gerekiyorsa, sunucunuzun dok\u00fcmanlar\u0131na ba\u015fvurun.<\/p>\n<p><strong>Performans Optimizasyonu<\/strong><\/p>\n<p>Sertifika alma ve yenileme s\u00fcre\u00e7lerini optimize etmek i\u00e7in a\u015fa\u011f\u0131daki ipu\u00e7lar\u0131n\u0131 kullanabilirsiniz:<\/p>\n<p>* <strong>DNS kay\u0131tlar\u0131n\u0131 \u00f6nceden olu\u015fturun:<\/strong>  Certbot&#8217;un DNS kay\u0131tlar\u0131n\u0131 olu\u015fturmas\u0131n\u0131 beklemek yerine, kay\u0131tlar\u0131 \u00f6nceden olu\u015fturarak s\u00fcreci h\u0131zland\u0131rabilirsiniz.<br \/>\n* <strong>Cron job kullan\u0131n:<\/strong>  Sertifikalar belli bir s\u00fcre sonra yenilenmelidir.  Cron job kullanarak, sertifika yenileme i\u015flemini otomatikle\u015ftirebilirsiniz.<br \/>\n* <strong>H\u0131zl\u0131 bir DNS sa\u011flay\u0131c\u0131s\u0131 kullan\u0131n:<\/strong>  DNS kay\u0131tlar\u0131n\u0131n yay\u0131lma s\u00fcresi, sertifika alma s\u00fcrecini etkiler.  H\u0131zl\u0131 bir DNS sa\u011flay\u0131c\u0131s\u0131 kullanarak bu s\u00fcreyi k\u0131salt\u0131n.<\/p>\n<p><strong>Ger\u00e7ek D\u00fcnya Senaryosu: E-ticaret Sitesi<\/strong><\/p>\n<p>Bir e-ticaret sitesi i\u00e7in, m\u00fc\u015fteri verilerinin g\u00fcvenli\u011fi \u00e7ok \u00f6nemlidir.  Wildcard SSL sertifikas\u0131, <code class=\"language-\">*.eticaret.com<\/code> gibi t\u00fcm alt alan adlar\u0131n\u0131 (\u00f6rne\u011fin, <code class=\"language-\">www.eticaret.com<\/code>, <code class=\"language-\">urunler.eticaret.com<\/code>, <code class=\"language-\">hesabim.eticaret.com<\/code>) g\u00fcvence alt\u0131na alarak, t\u00fcm siteyi tek bir sertifika ile koruman\u0131z\u0131 sa\u011flar.  Bu, g\u00fcvenlik y\u00f6netimini kolayla\u015ft\u0131r\u0131r ve ziyaret\u00e7ilerin g\u00fcvenini art\u0131r\u0131r.<\/p>\n<p><strong>Sonu\u00e7<\/strong><\/p>\n<p>Bu makalede, CentOS 7 sunucular\u0131n\u0131zda CloudFlare DNS do\u011frulamas\u0131yla Let&#8217;s Encrypt&#8217;ten wildcard SSL sertifikalar\u0131 alman\u0131n ad\u0131m ad\u0131m yol haritas\u0131n\u0131 ele ald\u0131k.  Bu s\u00fcre\u00e7, web sitenizin g\u00fcvenli\u011fini sa\u011flamak ve arama motorlar\u0131nda daha iyi s\u0131ralamalar elde etmek i\u00e7in kritik \u00f6neme sahiptir.  Unutmay\u0131n ki, sertifika yenileme i\u015flemlerini d\u00fczenli olarak yapman\u0131z ve g\u00fcvenlik en iyi uygulamalar\u0131na uyman\u0131z \u00f6nemlidir.<\/p>\n<p><strong>S\u0131k\u00e7a Sorulan Sorular:<\/strong><\/p>\n<p>1. <strong>Certbot&#8217;u kald\u0131rmak m\u00fcmk\u00fcn m\u00fc?<\/strong> Evet, <code class=\"language-\">sudo yum remove certbot<\/code> komutu ile Certbot&#8217;u kald\u0131rabilirsiniz.<br \/>\n2. <strong>Wildcard sertifikas\u0131 ka\u00e7 alt alan ad\u0131n\u0131 kapsar?<\/strong>  Teorik olarak s\u0131n\u0131rs\u0131z say\u0131da alt alan ad\u0131n\u0131 kapsar, ancak pratik olarak sunucunuzun kaynaklar\u0131 ve CloudFlare hesab\u0131n\u0131z\u0131n s\u0131n\u0131rlamalar\u0131 g\u00f6z \u00f6n\u00fcnde bulundurulmal\u0131d\u0131r.<br \/>\n3. <strong>Sertifika yenileme i\u015flemi ne s\u0131kl\u0131kla yap\u0131lmal\u0131d\u0131r?<\/strong>  Let&#8217;s Encrypt sertifikalar\u0131 genellikle 90 g\u00fcn ge\u00e7erlidir ve yenilenmeleri gerekir.<br \/>\n4. <strong>Farkl\u0131 bir web sunucusu kullan\u0131yorsam ne yapmal\u0131y\u0131m?<\/strong>  Certbot&#8217;un ilgili eklentisini kurman\u0131z ve do\u011frulama y\u00f6ntemini buna g\u00f6re ayarlaman\u0131z gerekecektir.<br \/>\n5. <strong>DNS kay\u0131tlar\u0131 olu\u015ftururken hata al\u0131rsam ne yapmal\u0131y\u0131m?<\/strong> CloudFlare hesab\u0131n\u0131z\u0131 ve DNS kay\u0131tlar\u0131n\u0131z\u0131 dikkatlice kontrol edin.  Hata mesaj\u0131n\u0131 inceleyin ve gerekli d\u00fczeltmeleri yap\u0131n.  Gerekirse, CloudFlare destek ekibiyle ileti\u015fime ge\u00e7in.<\/p>\n<p>Yazar: Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"# CentOS 7&#8217;de CloudFlare Do\u011frulamas\u0131yla Let&#8217;s Encrypt Wildcard SSL Sertifikalar\u0131 Nas\u0131l Al\u0131n\u0131r? Meta A\u00e7\u0131klamas\u0131: CentOS 7 sunucular\u0131n\u0131z i\u00e7in&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[241],"tags":[],"class_list":{"0":"post-30062","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-linux","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CentOS 7&#039;de CloudFlare Do\u011frulamas\u0131yla Let&#039;s Encrypt Wildcard SSL Sertifikalar\u0131 Nas\u0131l Al\u0131n\u0131r<\/title>\n<meta name=\"description\" content=\"Hi\u00e7bir etiketi bulunamad\u0131.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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