{"id":682,"date":"2025-12-07T23:55:30","date_gmt":"2025-12-07T20:55:30","guid":{"rendered":"https:\/\/oraclius.com.tr\/?p=682"},"modified":"2025-12-14T19:47:19","modified_gmt":"2025-12-14T16:47:19","slug":"clickhouse-nedir-gercek-zamanli-analitik-icin-isik-hizinda-sutun-tabanli-veritabani","status":"publish","type":"post","link":"https:\/\/oraclius.com.tr\/tr\/clickhouse-nedir-gercek-zamanli-analitik-icin-isik-hizinda-sutun-tabanli-veritabani\/","title":{"rendered":"ClickHouse Nedir? Ger\u00e7ek Zamanl\u0131 Analitik i\u00e7in I\u015f\u0131k H\u0131z\u0131nda, S\u00fctun Tabanl\u0131 Veritaban\u0131"},"content":{"rendered":"\n<p>ClickHouse, Yandex taraf\u0131ndan geli\u015ftirilmi\u015f, ger\u00e7ek zamanl\u0131 analitik (OLAP) i\u015f y\u00fckleri i\u00e7in tasarlanm\u0131\u015f a\u00e7\u0131k kaynakl\u0131, kolonsal bir veritaban\u0131 y\u00f6netim sistemidir (DBMS). Ad\u0131n\u0131 &#8220;Click&#8221; (T\u0131klama) ve &#8220;House&#8221; (Ambar) kelimelerinden al\u0131r; temel olarak web analiti\u011fi ve b\u00fcy\u00fck veri k\u00fcmelerinde milisaniyeler i\u00e7inde sorgu sonu\u00e7lar\u0131 d\u00f6nd\u00fcrmek i\u00e7in tasarlanm\u0131\u015ft\u0131r.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">ClickHouse&#8217;un \u00d6nemli \u00d6zellikleri<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kolonsal Depolama (Columnar Storage): Geleneksel sat\u0131r tabanl\u0131 veritabanlar\u0131n\u0131n aksine, ClickHouse verileri s\u00fctunlar halinde depolar. Bu yap\u0131, analitik sorgularda (yaln\u0131zca belirli s\u00fctunlara eri\u015fildi\u011finde) I\/O miktar\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde azalt\u0131r ve y\u00fcksek s\u0131k\u0131\u015ft\u0131rma oranlar\u0131 sa\u011flar.<\/li>\n\n\n\n<li>Y\u00fcksek Performans: Saniyede milyarlarca sat\u0131r\u0131 i\u015fleyebilme kapasitesine sahiptir. Vekt\u00f6rel sorgu y\u00fcr\u00fctme motoru ve modern CPU mimarilerine uyumlu yap\u0131s\u0131 sayesinde benzersiz bir h\u0131z sunar.<\/li>\n\n\n\n<li>\u00d6l\u00e7eklenebilirlik (Scalability): Yatay olarak kolayca \u00f6l\u00e7eklenebilir. Sharding (par\u00e7alama) ve \u00e7o\u011faltma (replication) \u00f6zellikleri, \u00e7ok b\u00fcy\u00fck veri setlerinin da\u011f\u0131t\u0131k bir k\u00fcmede y\u00f6netilmesine olanak tan\u0131r.<\/li>\n\n\n\n<li>Ger\u00e7ek Zamanl\u0131 Analitik: Veri yaz\u0131l\u0131r yaz\u0131lmaz sorgulanabilir, bu da anl\u0131k g\u00f6sterge tablolar\u0131 (dashboards) ve ger\u00e7ek zamanl\u0131 i\u015f zekas\u0131 (BI) uygulamalar\u0131 i\u00e7in idealdir.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Ad\u0131m Ad\u0131m ClickHouse Kurulumu (Linux Tabanl\u0131)<\/h2>\n\n\n\n<p>ClickHouse&#8217;un resmi repolar\u0131ndan RHEL\/CentOS i\u00e7in gerekli olan \u00fc\u00e7 ana paketi indirmeniz gerekmektedir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>clickhouse-client<\/code><\/strong>: Sunucuya ba\u011flanmak i\u00e7in kullan\u0131lan komut sat\u0131r\u0131 istemcisini i\u00e7erir.<\/li>\n\n\n\n<li><strong><code>clickhouse-common-static<\/code><\/strong>: Ana ClickHouse ikililerini ve statik k\u00fct\u00fcphaneleri i\u00e7erir.<\/li>\n\n\n\n<li><strong><code>clickhouse-server<\/code><\/strong>: Sunucu bile\u015fenlerini, yap\u0131land\u0131rma dosyalar\u0131n\u0131 ve servis birimlerini i\u00e7erir.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/packages.clickhouse.com\/rpm\/stable\/clickhouse-common-static-23.11.2.11.x86_64.rpm\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">clickhouse-common-static-23.11.2.11.x86_64.rpm<\/a><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/packages.clickhouse.com\/rpm\/stable\/clickhouse-server-23.11.2.11.x86_64.rpm\">clickhouse-server-23.11.2.11.x86_64.rpm<\/a><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/packages.clickhouse.com\/rpm\/stable\/clickhouse-client-23.11.2.11.x86_64.rpm\">clickhouse-client-23.11.2.11.x86_64.rpm<\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<p>\u0130ndirilen RPM&#8217;lerin Kurulmas\u0131:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>rpm -ivh clickhouse-common-static-23.11.2.11.x86_64.rpm\nrpm -ivh clickhouse-server-23.11.2.11.x86_64.rpm\nrpm -ivh cclickhouse-client-23.11.2.11.x86_64.rpm<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>Kurulum ba\u015far\u0131l\u0131 olduktan sonra, <strong>ClickHouse<\/strong> servisini ba\u015flat\u0131n ve sistem ba\u015flang\u0131c\u0131nda a\u00e7\u0131lmas\u0131 i\u00e7in etkinle\u015ftirin:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Servisi ba\u015flat\u0131n\nsudo systemctl start clickhouse-server\n\n# Servisin sistem ba\u015flang\u0131c\u0131nda otomatik ba\u015flamas\u0131n\u0131 sa\u011flay\u0131n\nsudo systemctl enable clickhouse-server\n\n# Servis durumunu kontrol edin\nsudo systemctl status clickhouse-server<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>Kurulum tamamland\u0131ktan sonra, ClickHouse istemcisi ile sunucuya ba\u011flanabilirsiniz:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>clickhouse-client<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2699\ufe0f ClickHouse Optimizasyonu: Ba\u015flang\u0131\u00e7 Ayarlar\u0131<\/h2>\n\n\n\n<p>Kurulum tamamland\u0131ktan sonra, ClickHouse sunucusunun performansl\u0131 ve g\u00fcvenli \u00e7al\u0131\u015fmas\u0131 i\u00e7in baz\u0131 temel konfig\u00fcrasyonlar\u0131 d\u00fczenlemek \u00f6nemlidir. Bu ayarlar, genellikle <code>\/etc\/clickhouse-server\/config.xml<\/code> ve <code>\/etc\/clickhouse-server\/users.xml<\/code> dosyalar\u0131nda yap\u0131l\u0131r. \u00d6ncelikle clickhouse kullan\u0131c\u0131s\u0131na bir \u015fifre atayal\u0131m.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>passwd clickhouse\nChanging password for user clickhouse.\nNew password: \nBAD PASSWORD: The password is shorter than 8 characters\nRetype new password: \npasswd: all authentication tokens updated successfully.<\/code><\/pre>\n\n\n\n<p>2 Ayr\u0131 config dosyam\u0131z var. Bu izinler, bu dosyalar\u0131 d\u00fczenlemek i\u00e7in yeterli de\u011fil. De\u011fi\u015fiklikleri yapmak i\u00e7in gerekli yetkileri verelim.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\/etc\/clickhouse-server\/config.xml<\/code> (Sunucu Genel Ayarlar\u0131)<\/li>\n\n\n\n<li><code>\/etc\/clickhouse-server\/users.xml<\/code> (Kullan\u0131c\u0131 ve Kaynak K\u0131s\u0131tlamalar\u0131)<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>ll \/etc\/clickhouse-server\/config.xml \n-r-------- 1 clickhouse clickhouse 77938 Dec 13  2023 \/etc\/clickhouse-server\/config.xml\n\n\nll \/etc\/clickhouse-server\/users.xml\n-r-------- 1 clickhouse clickhouse 5672 Dec 13  2023 \/etc\/clickhouse-server\/users.xml\n\nchmod 660 \/etc\/clickhouse-server\/config.xml\nchmod 660 \/etc\/clickhouse-server\/users.xml<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">1. A\u011f Eri\u015fimi (Config.xml)<\/h3>\n\n\n\n<p>Varsay\u0131lan olarak ClickHouse, yaln\u0131zca yerel ba\u011flant\u0131lara (localhost) izin verir. E\u011fer sunucuya uzaktan eri\u015fim (\u00f6rne\u011fin bir BI arac\u0131 veya ba\u015fka bir sunucudan) sa\u011flamak istiyorsan\u0131z, bu ayar\u0131 de\u011fi\u015ftirmeniz gerekir.<\/p>\n\n\n\n<p><strong>De\u011fi\u015ftirilecek Dosya:<\/strong> <code>\/etc\/clickhouse-server\/config.xml<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;listen_host&gt;0.0.0.0&lt;\/listen_host&gt;<\/code><\/pre>\n\n\n\n<p><strong>A\u00e7\u0131klama:<\/strong> <code>0.0.0.0<\/code> olarak ayarlamak, ClickHouse&#8217;un <strong>t\u00fcm a\u011f aray\u00fczlerinden<\/strong> gelen ba\u011flant\u0131lar\u0131 dinlemesini sa\u011flar. E\u011fer yaln\u0131zca belirli bir IP&#8217;den eri\u015fime izin vermek istiyorsan\u0131z, o IP adresini buraya yazmal\u0131s\u0131n\u0131z. G\u00fcvenlik i\u00e7in, bu de\u011fi\u015fikli\u011fi yapt\u0131ktan sonra sunucunuzun <strong>g\u00fcvenlik duvar\u0131n\u0131 (firewall)<\/strong> (varsay\u0131lan portlar: 8123 HTTP, 9000 TCP) do\u011fru yap\u0131land\u0131rd\u0131\u011f\u0131n\u0131zdan emin olun.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u0130stemci\/Kullan\u0131c\u0131 Ayarlar\u0131 (Users.xml)<\/h3>\n\n\n\n<p>Varsay\u0131lan <code>default<\/code> kullan\u0131c\u0131s\u0131, testler i\u00e7in uygun olsa da, ger\u00e7ek uygulamalarda \u00f6zel kullan\u0131c\u0131lar olu\u015fturulmas\u0131 g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u015fartt\u0131r.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">A. Varsay\u0131lan (Default) Kullan\u0131c\u0131n\u0131n \u015eifresini De\u011fi\u015ftirme<\/h4>\n\n\n\n<p><code>default<\/code> kullan\u0131c\u0131s\u0131 ba\u015flang\u0131\u00e7ta \u015fifresizdir ve t\u00fcm yerel eri\u015fime sahiptir. Bu durumu d\u00fczeltmek i\u00e7in:<\/p>\n\n\n\n<p><strong>De\u011fi\u015ftirilecek Dosya:<\/strong> <code>\/etc\/clickhouse-server\/users.xml<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;users&gt;\n    &lt;default&gt;\n        &lt;profile&gt;default&lt;\/profile&gt;\n        &lt;networks&gt;\n            &lt;ip&gt;::\/0&lt;\/ip&gt; \n        &lt;\/networks&gt;\n        &lt;password&gt;YENI_VE_GUCLU_PAROLANIZ&lt;\/password&gt;\n        \n        &lt;\/default&gt;\n&lt;\/users&gt;<\/code><\/pre>\n\n\n\n<p><strong>Uyar\u0131:<\/strong> \u015eifreyi de\u011fi\u015ftirdikten sonra, bundan b\u00f6yle <code>clickhouse-client<\/code> ile ba\u011flan\u0131rken \u015fifrenizi belirtmeniz gerekecektir: <code>clickhouse-client --user default --password YENI_VE_GUCLU_PAROLANIZ<\/code><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">B. Yeni Bir Uygulama Kullan\u0131c\u0131s\u0131 Ekleme<\/h4>\n\n\n\n<p>\u00dcretim ortamlar\u0131nda <code>default<\/code> kullan\u0131c\u0131s\u0131n\u0131 kullanmak yerine, her uygulama veya servis i\u00e7in <strong>\u00f6zel yetkilendirilmi\u015f bir kullan\u0131c\u0131<\/strong> olu\u015fturmak daha g\u00fcvenlidir.<\/p>\n\n\n\n<p>Ayn\u0131 <code>\/etc\/clickhouse-server\/users.xml<\/code> dosyas\u0131na <code>&lt;default&gt;<\/code> blo\u011funun hemen alt\u0131na yeni bir kullan\u0131c\u0131 blo\u011fu ekleyin.<\/p>\n\n\n\n<p><strong>De\u011fi\u015ftirilecek Dosya:<\/strong> <code>\/etc\/clickhouse-server\/users.xml<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;users&gt;\n    &lt;default&gt;\n...\n    &lt;\/default&gt;\n    \n    &lt;emre_user&gt;\n        &lt;profile&gt;readonly&lt;\/profile&gt;\n\n        &lt;password&gt;emre1234&lt;\/password&gt;\n\n        &lt;networks&gt;\n            &lt;ip&gt;::\/0&lt;\/ip&gt;\n        &lt;\/networks&gt;\n\n        &lt;quota&gt;default&lt;\/quota&gt;\n    &lt;\/emre_user&gt;<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Bellek S\u0131n\u0131rlar\u0131 (Users.xml &#8211; Profile Ayarlar\u0131)<\/h3>\n\n\n\n<p>Analitik sorgular \u00e7ok fazla RAM t\u00fcketebilir. Kullan\u0131c\u0131 veya profil baz\u0131nda sorgu ba\u015f\u0131na bellek s\u0131n\u0131rlar\u0131n\u0131 ayarlamak, tek bir hatal\u0131 veya \u00e7ok karma\u015f\u0131k sorgunun t\u00fcm sunucuyu \u00e7\u00f6kertmesini engeller.<\/p>\n\n\n\n<p><strong>De\u011fi\u015ftirilecek Dosya:<\/strong> <code>\/etc\/clickhouse-server\/users.xml<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;profiles&gt;\n    &lt;default&gt;\n        &lt;max_memory_usage&gt;10000000000&lt;\/max_memory_usage\n        &lt;max_rows_to_read&gt;1000000000&lt;\/max_rows_to_read&gt;\n    &lt;\/default&gt;\n&lt;\/profiles&gt;<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Disk Yolunun Tan\u0131mlanmas\u0131<\/h3>\n\n\n\n<p>Veri ve metadata i\u00e7in ayr\u0131 diskler kullan\u0131yorsan\u0131z veya varsay\u0131lan yer yerine daha b\u00fcy\u00fck bir diski kullanmak istiyorsan\u0131z, bu parametreleri belirtmelisiniz.<\/p>\n\n\n\n<p>&lt;path&gt; : Veri (data) dosyalar\u0131n\u0131n saklanaca\u011f\u0131 ana dizin. Y\u00fcksek h\u0131zl\u0131 SSD kullan\u0131lmas\u0131 \u00f6nerilir.<\/p>\n\n\n\n<p>&lt;tmp_path&gt; : B\u00fcy\u00fck sorgular\u0131n ge\u00e7ici dosyalar\u0131n\u0131n tutuldu\u011fu dizin. Yetersiz bellek durumunda buraya yaz\u0131l\u0131r<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Dosya:<\/strong> <code>\/etc\/clickhouse-server\/config.xml<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;path&gt;\/var\/lib\/clickhouse\/&lt;\/path&gt; \n\n&lt;tmp_path&gt;\/var\/lib\/clickhouse\/tmp\/&lt;\/tmp_path&gt;<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Loglama<\/h3>\n\n\n\n<p>ClickHouse, farkl\u0131 ama\u00e7lar i\u00e7in birden fazla log dosyas\u0131 kullan\u0131r. Bu log dosyalar\u0131n\u0131n konumu, boyutu ve detay seviyesi (<code>config.xml<\/code> dosyas\u0131ndaki <code>&lt;logger&gt;<\/code> blo\u011funda) \u00f6zelle\u015ftirilebilir.<\/p>\n\n\n\n<p><strong>Dosya:<\/strong> <code>\/etc\/clickhouse-server\/config.xml<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;\/logger&gt;\n        &lt;level&gt;trace&lt;\/level&gt;\n        &lt;log&gt;\/var\/log\/clickhouse-server\/log&lt;\/log&gt;\n        &lt;errorlog&gt;\/var\/log\/clickhouse-server\/err_log&lt;\/errorlog&gt;\n        &lt;size&gt;1000M&lt;\/size&gt;\n        &lt;count&gt;10&lt;\/count&gt;\n&lt;\/logger&gt;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Parametre<\/strong><\/td><td><strong>A\u00e7\u0131klama<\/strong><\/td><td><strong>\u00d6nerilen De\u011fer<\/strong><\/td><td><strong>Kullan\u0131m Amac\u0131<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong><code>&lt;level&gt;<\/code><\/strong><\/td><td>Loglama seviyesi. Hangi \u00f6nemdeki mesajlar\u0131n loglanaca\u011f\u0131n\u0131 belirler.<\/td><td><code>information<\/code> (\u00dcretim)<\/td><td>Hata ay\u0131klama (<code>debug<\/code> veya <code>trace<\/code>) ve \u00fcretim (<code>information<\/code>, <code>warning<\/code>, <code>error<\/code>) aras\u0131nda se\u00e7im.<\/td><\/tr><tr><td><strong><code>&lt;log&gt;<\/code><\/strong><\/td><td>Ana sunucu olaylar\u0131n\u0131n (ba\u015flatma, durdurma, genel bilgiler) kaydedildi\u011fi dosya yolu.<\/td><td><code>\/var\/log\/clickhouse-server\/clickhouse.log<\/code><\/td><td>Sunucu durumunu takip etme.<\/td><\/tr><tr><td><strong><code>&lt;errorlog&gt;<\/code><\/strong><\/td><td>Yaln\u0131zca kritik hata mesajlar\u0131n\u0131n (error seviyesinde) kaydedildi\u011fi dosya yolu.<\/td><td><code>\/var\/log\/clickhouse-server\/clickhouse.err.log<\/code><\/td><td>Sorun giderme ve kritik hatalar\u0131 izleme.<\/td><\/tr><tr><td><strong><code>&lt;size&gt;<\/code><\/strong><\/td><td>Her bir log dosyas\u0131n\u0131n diskte kaplayaca\u011f\u0131 maksimum boyut. Bu s\u0131n\u0131ra ula\u015f\u0131ld\u0131\u011f\u0131nda log rotasyonu ba\u015flar.<\/td><td><code>100M<\/code><\/td><td>Disk alan\u0131 y\u00f6netimini sa\u011flamak.<\/td><\/tr><tr><td><strong><code>&lt;count&gt;<\/code><\/strong><\/td><td>Tutulacak log dosyas\u0131 say\u0131s\u0131. (\u00d6rn: <code>clickhouse.log.1<\/code>, <code>clickhouse.log.2<\/code>&#8230;).<\/td><td><code>10<\/code><\/td><td>Ge\u00e7mi\u015f olaylar\u0131 makul bir s\u00fcre saklamak.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Log seviyeleri, \u00f6nem s\u0131ras\u0131na g\u00f6re (<strong>en az \u00f6nemli olandan en kritik olana<\/strong>) \u015fu \u015fekildedir:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <code>trace<\/code> (\u0130zleme)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00d6nem:<\/strong> En D\u00fc\u015f\u00fck.<\/li>\n\n\n\n<li><strong>\u0130\u00e7erik:<\/strong> \u00c7ok fazla detay i\u00e7erir; neredeyse her fonksiyon \u00e7a\u011fr\u0131s\u0131, i\u00e7 d\u00f6ng\u00fc ve d\u00fc\u015f\u00fck seviyeli operasyonun kayd\u0131n\u0131 tutar.<\/li>\n\n\n\n<li><strong>Kullan\u0131m Alan\u0131:<\/strong> <strong>\u00c7ok derinlemesine hata ay\u0131klama<\/strong> ve geli\u015ftiriciler taraf\u0131ndan spesifik bir yaz\u0131l\u0131m hatas\u0131n\u0131n kayna\u011f\u0131n\u0131 bulma.<\/li>\n\n\n\n<li><strong>Uyar\u0131:<\/strong> <strong>\u00dcretim (Production) ortamlar\u0131nda KES\u0130NL\u0130KLE kullan\u0131lmamal\u0131d\u0131r<\/strong>, \u00e7\u00fcnk\u00fc \u00e7ok b\u00fcy\u00fck log dosyalar\u0131 olu\u015fturur ve performans\u0131 ciddi \u00f6l\u00e7\u00fcde d\u00fc\u015f\u00fcr\u00fcr.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. <code>debug<\/code> (Hata Ay\u0131klama)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00d6nem:<\/strong> D\u00fc\u015f\u00fck.<\/li>\n\n\n\n<li><strong>\u0130\u00e7erik:<\/strong> Uygulama ak\u0131\u015f\u0131 ve durum de\u011fi\u015fiklikleri hakk\u0131nda detayl\u0131 bilgiler.<\/li>\n\n\n\n<li><strong>Kullan\u0131m Alan\u0131:<\/strong> Geli\u015ftirme veya test ortamlar\u0131nda, bir \u00f6zelli\u011fin veya entegrasyonun beklenen \u015fekilde \u00e7al\u0131\u015f\u0131p \u00e7al\u0131\u015fmad\u0131\u011f\u0131n\u0131 anlamak i\u00e7in kullan\u0131l\u0131r.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">3. <code>information<\/code> (Bilgilendirme)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00d6nem:<\/strong> Orta (Genel \u00dcretim Seviyesi).<\/li>\n\n\n\n<li><strong>\u0130\u00e7erik:<\/strong> Sunucu ba\u015flang\u0131c\u0131\/durdurulmas\u0131, ba\u011flant\u0131 bilgileri, <strong>uzun s\u00fcren sorgular (sorgu s\u00fcreleri)<\/strong> ve genel sistem olaylar\u0131 gibi \u00f6nemli durum g\u00fcncellemelerini i\u00e7erir.<\/li>\n\n\n\n<li><strong>Kullan\u0131m Alan\u0131:<\/strong> <strong>Standart \u00fcretim ortamlar\u0131 i\u00e7in \u00f6nerilen seviyedir.<\/strong> Sunucu sa\u011fl\u0131\u011f\u0131n\u0131 ve genel sorgu trafi\u011fini izlemek i\u00e7in yeterli bilgiyi sa\u011flar.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">4. <code>warning<\/code> (Uyar\u0131)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00d6nem:<\/strong> Y\u00fcksek.<\/li>\n\n\n\n<li><strong>\u0130\u00e7erik:<\/strong> Kritik olmayan, ancak gelecekte sorun \u00e7\u0131karabilecek potansiyel sorunlara i\u015faret eden mesajlar. \u00d6rne\u011fin, yava\u015f \u00e7al\u0131\u015fan sorgular\u0131n zaman a\u015f\u0131m\u0131na yakla\u015fmas\u0131, baz\u0131 konfig\u00fcrasyon sorunlar\u0131.<\/li>\n\n\n\n<li><strong>Kullan\u0131m Alan\u0131:<\/strong> Kritik durumlar\u0131n \u00f6nlenmesi ve proaktif sistem bak\u0131m\u0131 i\u00e7in \u00f6nemlidir.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">5. <code>error<\/code> (Hata)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00d6nem:<\/strong> En Y\u00fcksek (Kritik).<\/li>\n\n\n\n<li><strong>\u0130\u00e7erik:<\/strong> Uygulaman\u0131n \u00e7al\u0131\u015fmas\u0131n\u0131 do\u011frudan etkileyen ve acil m\u00fcdahale gerektiren ciddi hatalar (\u00f6rne\u011fin disk I\/O hatalar\u0131, veritaban\u0131 kilitlenmeleri, servis ba\u015flatma hatalar\u0131).<\/li>\n\n\n\n<li><strong>Kullan\u0131m Alan\u0131:<\/strong> Sunucunun kararl\u0131l\u0131\u011f\u0131n\u0131 sa\u011flamak i\u00e7in <strong>mutlaka izlenmesi gereken<\/strong> kritik sorunlard\u0131r.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">ClickHouse \u0130stemcisine Ba\u011flanma ve \u0130lk Tabloyu Olu\u015fturma<\/h2>\n\n\n\n<p>Bu b\u00f6l\u00fcmde, RPM paketleriyle kurdu\u011funuz ClickHouse sunucusuna, belirledi\u011finiz kullan\u0131c\u0131 ad\u0131 ve \u015fifre ile ba\u011flanma ve temel bir veri yap\u0131s\u0131 olu\u015fturma ad\u0131mlar\u0131n\u0131 g\u00f6receksiniz.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. ClickHouse \u0130stemcisine Ba\u011flanma<\/h3>\n\n\n\n<p><code>users.xml<\/code> dosyas\u0131nda varsay\u0131lan kullan\u0131c\u0131 (<code>default<\/code>) i\u00e7in bir parola belirledi\u011finiz i\u00e7in, art\u0131k istemciyi ba\u015flat\u0131rken kullan\u0131c\u0131 ad\u0131 ve parolay\u0131 belirtmelisiniz.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># default kullan\u0131c\u0131s\u0131 ve belirledi\u011finiz \u015fifre ile ba\u011flan\u0131n (\u00d6rn: 12345678)\nclickhouse-client --user default --password 12345678<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Yeni Bir Veritaban\u0131 Olu\u015fturma<\/h3>\n\n\n\n<p>Analitik verilerimizi izole etmek i\u00e7in bir veritaban\u0131 olu\u015ftural\u0131m.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>:) CREATE DATABASE web_analytics;\n\nCREATE DATABASE web_analytics\n\nOk.\n\n:) USE web_analytics;\n\nUSE web_analytics\n\nOk.<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Tablo Olu\u015fturma (MergeTree Motoru Kullanarak)<\/h3>\n\n\n\n<p>ClickHouse&#8217;un kalbi, analitik sorgular i\u00e7in tasarlanm\u0131\u015f depolama motoru olan <strong><code>MergeTree<\/code><\/strong> motorudur. Bu motor, y\u00fcksek s\u0131k\u0131\u015ft\u0131rma, s\u0131ral\u0131 depolama ve h\u0131zl\u0131 veri okuma sa\u011flar.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>:) CREATE TABLE page_views (\n    event_time DateTime,          -- Ziyaretin tam zaman\u0131\n    user_id UInt32,               -- Ziyaret\u00e7inin benzersiz ID'si\n    session_id UUID,              -- Oturum ID'si\n    page_url LowCardinality(String), -- Ziyaret edilen sayfa (Tekrarlayan String'ler i\u00e7in optimize)\n    visit_duration_sec UInt16     -- Sayfada ge\u00e7irilen s\u00fcre (saniye)\n)\nENGINE = MergeTree()\nPARTITION BY toYYYYMM(event_time)   -- Verileri aya g\u00f6re b\u00f6l\u00fcmlendir (Partitioning)\nORDER BY (user_id, event_time)      -- Verileri bu s\u00fctunlara g\u00f6re diskte s\u0131rala (Sorting Key)\nSETTINGS index_granularity = 8192;  -- MergeTree'nin temel ayar\u0131<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Veri Ekleme (INSERT)<\/h3>\n\n\n\n<p>\u015eimdi olu\u015fturdu\u011fumuz tabloya \u00f6rnek veriler ekleyelim:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>:) INSERT INTO page_views VALUES \n    ('2025-12-07 20:00:00', 1001, generateUUIDv4(), '\/anasayfa', 45),\n    ('2025-12-07 20:05:30', 1002, generateUUIDv4(), '\/urunler\/42', 120),\n    ('2025-12-07 20:07:15', 1001, generateUUIDv4(), '\/hakkimizda', 15);\n\nINSERT INTO page_views\n\nOk. 3 rows in set.<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">5. Basit Analitik Sorgu (SELECT)<\/h3>\n\n\n\n<p>Ekledi\u011finiz veriler \u00fczerinde basit bir analitik sorgu \u00e7al\u0131\u015ft\u0131ral\u0131m:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>:) SELECT \n    user_id, \n    count() AS total_visits, \n    avg(visit_duration_sec) AS avg_time_sec\nFROM page_views \nGROUP BY user_id \nORDER BY total_visits DESC;<\/code><\/pre>\n\n\n\n<p>Sorgu Sonucu:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Query id: d72e2978-f6d2-449e-b5b5-0b3e7e11c592\n\n\u250c\u2500user_id\u2500\u252c\u2500total_visits\u2500\u252c\u2500avg_time_sec\u2500\u2510\n\u2502    1001 \u2502            2 \u2502           30 \u2502\n\u2502    1002 \u2502            1 \u2502          120 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n2 rows in set. Elapsed: 0.002 sec.<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ClickHouse, Yandex taraf\u0131ndan geli\u015ftirilmi\u015f, ger\u00e7ek zamanl\u0131 analitik (OLAP) i\u015f y\u00fckleri i\u00e7in tasarlanm\u0131\u015f a\u00e7\u0131k kaynakl\u0131, kolonsal bir veritaban\u0131 y\u00f6netim sistemidir (DBMS). Ad\u0131n\u0131 &#8220;Click&#8221; (T\u0131klama) ve &#8220;House&#8221; (Ambar) kelimelerinden al\u0131r; temel olarak web analiti\u011fi ve b\u00fcy\u00fck veri k\u00fcmelerinde milisaniyeler i\u00e7inde sorgu sonu\u00e7lar\u0131 d\u00f6nd\u00fcrmek i\u00e7in tasarlanm\u0131\u015ft\u0131r. ClickHouse&#8217;un \u00d6nemli \u00d6zellikleri Ad\u0131m Ad\u0131m ClickHouse Kurulumu (Linux Tabanl\u0131) ClickHouse&#8217;un resmi repolar\u0131ndan [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":683,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[],"class_list":["post-682","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ClickHouse Nedir? 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