Supervisor Kurulumu ve Y\u00f6netimi: S\u00fcre\u00e7lerinizi Nas\u0131l Otomatikle\u015ftirirsiniz?<\/title><br \/>\n<body><\/p>\n<p>Modern yaz\u0131l\u0131m geli\u015ftirme d\u00fcnyas\u0131nda, uygulamalar\u0131n arka planda kesintisiz \u00e7al\u0131\u015fmas\u0131 hayati \u00f6neme sahiptir. Bir web sunucusu, bir kuyruk i\u015fleyici veya \u00f6zel bir arka plan g\u00f6revi olsun, bu s\u00fcre\u00e7lerin s\u00fcrekli ayakta kalmas\u0131, olas\u0131 hatalarda otomatik olarak yeniden ba\u015flat\u0131lmas\u0131 ve genel sistem kararl\u0131l\u0131\u011f\u0131n\u0131n sa\u011flanmas\u0131, sistem y\u00f6neticileri ve geli\u015ftiriciler i\u00e7in b\u00fcy\u00fck bir zorluk te\u015fkil edebilir. Peki, bu karma\u015f\u0131k s\u00fcre\u00e7 y\u00f6netimini nas\u0131l basitle\u015ftirebilir ve uygulamalar\u0131n\u0131z\u0131n her zaman \u00e7al\u0131\u015f\u0131r durumda oldu\u011fundan emin olabilirsiniz? \u0130\u015fte tam da bu noktada, a\u00e7\u0131k kaynakl\u0131 bir s\u00fcre\u00e7 denetleme sistemi olan Supervisor devreye giriyor. Bu makalede, Supervisor’\u0131 ba\u015ftan sona nas\u0131l kuraca\u011f\u0131n\u0131z\u0131, yap\u0131land\u0131raca\u011f\u0131n\u0131z\u0131 ve y\u00f6netece\u011finizi ad\u0131m ad\u0131m \u00f6\u011frenecek, b\u00f6ylece sunucu uygulamalar\u0131n\u0131z\u0131n g\u00fcvenilirli\u011fini ve verimlili\u011fini art\u0131racaks\u0131n\u0131z.<\/p>\n<h2>S\u00fcre\u00e7 Y\u00f6netiminde Supervisor: Neden Vazge\u00e7ilmez Bir Ara\u00e7?<\/h2>\n<p>G\u00fcn\u00fcm\u00fcz\u00fcn dinamik dijital ortam\u0131nda, bir uygulaman\u0131n sadece “\u00e7al\u0131\u015f\u0131yor” olmas\u0131 yeterli de\u011fildir; ayn\u0131 zamanda her zaman “eri\u015filebilir” ve “kararl\u0131” olmas\u0131 da beklenir. Bir web uygulamas\u0131n\u0131n arka plan\u0131nda \u00e7al\u0131\u015fan bir veritaban\u0131 ba\u011flant\u0131 havuzu, mesaj kuyru\u011fu i\u015fleyicileri (\u00f6rne\u011fin Celery veya RabbitMQ), zamanlanm\u0131\u015f g\u00f6revler veya \u00f6zel uzun s\u00fcreli komut dosyalar\u0131 gibi bir\u00e7ok kritik bile\u015fen bulunur. Bu bile\u015fenlerden herhangi birinin beklenmedik bir \u015fekilde \u00e7\u00f6kmesi veya durmas\u0131, uygulaman\u0131n genel performans\u0131n\u0131 ciddi \u015fekilde etkileyebilir, hatta tamamen hizmet d\u0131\u015f\u0131 kalmas\u0131na neden olabilir. \u0130\u015fte bu gibi senaryolarda, s\u00fcre\u00e7lerinizi proaktif bir \u015fekilde izleyen ve y\u00f6neten bir araca olan ihtiya\u00e7 ka\u00e7\u0131n\u0131lmaz hale gelir.<\/p>\n<p>Supervisor, Python ile yaz\u0131lm\u0131\u015f hafif, g\u00fc\u00e7l\u00fc ve esnek bir s\u00fcre\u00e7 denetleme sistemidir. Temel amac\u0131, Linux benzeri i\u015fletim sistemlerinde daemon’lar\u0131 (arka plan s\u00fcre\u00e7leri) izlemek, ba\u015flatmak, durdurmak ve gerekti\u011finde otomatik olarak yeniden ba\u015flatmakt\u0131r. Geleneksel olarak, bu t\u00fcr g\u00f6revler genellikle <code>init.d<\/code> scriptleri, <code>systemd<\/code> veya <code>cron<\/code> gibi ara\u00e7larla y\u00f6netilirdi. Ancak Supervisor, \u00f6zellikle \u00e7ok say\u0131da uygulaman\u0131n ve s\u00fcrecin bir arada \u00e7al\u0131\u015ft\u0131\u011f\u0131 karma\u015f\u0131k sistemlerde, bu y\u00f6netimi \u00e7ok daha merkezi ve kullan\u0131c\u0131 dostu bir hale getirir. Bir uygulaman\u0131n \u00e7\u00f6kmesi durumunda, Supervisor bunu an\u0131nda alg\u0131lar ve \u00f6nceden tan\u0131mlanm\u0131\u015f kurallar\u0131n\u0131za g\u00f6re s\u00fcreci otomatik olarak yeniden ba\u015flatarak hizmet kesintisini en aza indirir. Bu, \u00f6zellikle y\u00fcksek eri\u015filebilirlik gerektiren \u00fcretim ortamlar\u0131nda paha bi\u00e7ilmez bir \u00f6zelliktir. Ayr\u0131ca, her s\u00fcrecin standart \u00e7\u0131kt\u0131 ve hata ak\u0131\u015flar\u0131n\u0131 ayr\u0131 ayr\u0131 log dosyalar\u0131na y\u00f6nlendirme yetene\u011fi sayesinde, sorun giderme ve hata ay\u0131klama s\u00fcre\u00e7leri de olduk\u00e7a kolayla\u015f\u0131r.<\/p>\n<p>Supervisor’\u0131n sundu\u011fu avantajlar sadece otomatik yeniden ba\u015flatma ile s\u0131n\u0131rl\u0131 de\u011fildir. Ayn\u0131 zamanda s\u00fcre\u00e7 gruplar\u0131 olu\u015fturma, her bir s\u00fcrece \u00f6zel ortam de\u011fi\u015fkenleri atama, s\u00fcre\u00e7lerin ba\u015flang\u0131\u00e7 ve durdurma s\u0131ralar\u0131n\u0131 kontrol etme gibi geli\u015fmi\u015f \u00f6zellikler de sunar. Bu \u00f6zellikler, \u00f6zellikle mikroservis mimarileri veya birden fazla ba\u011f\u0131ml\u0131 bile\u015fenin \u00e7al\u0131\u015ft\u0131\u011f\u0131 sistemlerde, uygulaman\u0131n ya\u015fam d\u00f6ng\u00fcs\u00fcn\u00fc tutarl\u0131 ve \u00f6ng\u00f6r\u00fclebilir bir \u015fekilde y\u00f6netmek i\u00e7in kritik \u00f6neme sahiptir. \u00d6rne\u011fin, bir veritaban\u0131 servisinin ba\u015flamas\u0131n\u0131 bekleyen bir uygulama s\u00fcrecini, veritaban\u0131 haz\u0131r olana kadar ba\u015flatmayacak \u015fekilde yap\u0131land\u0131rabilirsiniz. Bu sayede, uygulaman\u0131z\u0131n ba\u011f\u0131ml\u0131l\u0131klar\u0131 do\u011fru s\u0131rada ba\u015flat\u0131l\u0131r ve potansiyel ba\u015flang\u0131\u00e7 hatalar\u0131n\u0131n \u00f6n\u00fcne ge\u00e7ilir. K\u0131sacas\u0131, Supervisor, s\u00fcre\u00e7 y\u00f6netimini basitle\u015ftirerek sistem y\u00f6neticilerinin ve geli\u015ftiricilerin y\u00fck\u00fcn\u00fc azalt\u0131r, uygulamalar\u0131n daha g\u00fcvenilir ve kesintisiz \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flar.<\/p>\n<h2>Supervisor Kurulumu ve \u0130lk Ad\u0131mlar: Sisteminizi Haz\u0131rlama<\/h2>\n<p>Supervisor’\u0131 sisteminize kurmak ve ilk ad\u0131mlar\u0131 atmak olduk\u00e7a basittir. Genellikle Linux tabanl\u0131 sistemlerde kullan\u0131l\u0131r ve Python tabanl\u0131 oldu\u011fu i\u00e7in Python paket y\u00f6neticisi <code>pip<\/code> arac\u0131l\u0131\u011f\u0131yla veya da\u011f\u0131t\u0131m\u0131n\u0131z\u0131n paket y\u00f6neticisi ile kolayca kurulabilir. Bu b\u00f6l\u00fcmde, Ubuntu\/Debian tabanl\u0131 bir sistemde kurulumu ad\u0131m ad\u0131m inceleyece\u011fiz ve ard\u0131ndan temel bir yap\u0131land\u0131rma dosyas\u0131 olu\u015fturarak Supervisor’\u0131 \u00e7al\u0131\u015ft\u0131rmaya haz\u0131r hale getirece\u011fiz.<\/p>\n<h3>\u00d6nko\u015fullar ve Kurulum Y\u00f6ntemleri<\/h3>\n<p>Supervisor’\u0131 kurmadan \u00f6nce, sisteminizde Python’\u0131n ve <code>pip<\/code>‘in kurulu oldu\u011fundan emin olmal\u0131s\u0131n\u0131z. \u00c7o\u011fu modern Linux da\u011f\u0131t\u0131m\u0131nda Python varsay\u0131lan olarak gelir. E\u011fer <code>pip<\/code> kurulu de\u011filse, a\u015fa\u011f\u0131daki komutlarla kurabilirsiniz:<\/p>\n<pre><code class=\"language-bash\">sudo apt update\nsudo apt install python3-pip\n<\/code><\/pre>\n<p>Kurulum i\u00e7in iki ana y\u00f6ntem bulunmaktad\u0131r:<\/p>\n<ol>\n<li><strong>Sistem Paket Y\u00f6neticisi ile Kurulum (\u00d6nerilen):<\/strong> Bu y\u00f6ntem, Supervisor’\u0131n sisteminizle daha entegre \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flar ve genellikle daha kararl\u0131 bir deneyim sunar. Ubuntu\/Debian i\u00e7in:\n<pre><code class=\"language-bash\">sudo apt install supervisor\n<\/code><\/pre>\n<\/li>\n<li><strong>Python Pip ile Kurulum:<\/strong> E\u011fer sistem paket y\u00f6neticinizde Supervisor’\u0131n g\u00fcncel s\u00fcr\u00fcm\u00fc yoksa veya daha spesifik bir Python ortam\u0131nda \u00e7al\u0131\u015fmak istiyorsan\u0131z <code>pip<\/code> kullanabilirsiniz:\n<pre><code class=\"language-bash\">pip install supervisor\n<\/code><\/pre>\n<p><code>pip<\/code> ile kurdu\u011funuzda, Supervisor’\u0131n y\u00fcr\u00fct\u00fclebilir dosyalar\u0131 (<code>supervisord<\/code> ve <code>supervisorctl<\/code>) genellikle <code>\/usr\/local\/bin<\/code> dizinine veya Python sanal ortam\u0131n\u0131z\u0131n <code>bin<\/code> dizinine yerle\u015fir. Sistem paket y\u00f6neticisi ile kurdu\u011funuzda ise genellikle <code>\/usr\/bin<\/code> veya <code>\/usr\/sbin<\/code> gibi standart sistem yollar\u0131nda bulunurlar.<\/p>\n<\/li>\n<\/ol>\n<p>Kurulum tamamland\u0131ktan sonra, Supervisor servisinin otomatik olarak ba\u015flat\u0131ld\u0131\u011f\u0131ndan emin olmak i\u00e7in sistemd’yi kullanabilirsiniz. E\u011fer <code>apt<\/code> ile kurduysan\u0131z, genellikle servis otomatik olarak etkinle\u015ftirilir ve ba\u015flat\u0131l\u0131r. E\u011fer <code>pip<\/code> ile kurduysan\u0131z, kendi <code>systemd<\/code> servis dosyan\u0131z\u0131 olu\u015fturman\u0131z gerekebilir. Ancak <code>apt<\/code> ile kurulumda, servis genellikle zaten mevcuttur ve a\u015fa\u011f\u0131daki komutlarla durumunu kontrol edebilirsiniz:<\/p>\n<pre><code class=\"language-bash\">sudo systemctl status supervisor\n<\/code><\/pre>\n<p>E\u011fer servis \u00e7al\u0131\u015fm\u0131yorsa veya etkin de\u011filse:<\/p>\n<pre><code class=\"language-bash\">sudo systemctl enable supervisor\nsudo systemctl start supervisor\n<\/code><\/pre>\n<h3>Temel Yap\u0131land\u0131rma Dosyas\u0131 Olu\u015fturma<\/h3>\n<p>Supervisor’\u0131n ana yap\u0131land\u0131rma dosyas\u0131 genellikle <code>\/etc\/supervisor\/supervisord.conf<\/code> veya <code>\/etc\/supervisord.conf<\/code> konumunda bulunur. <code>apt<\/code> ile kurulumda bu dosya otomatik olarak olu\u015fturulur ve genellikle <code>\/etc\/supervisor\/conf.d\/<\/code> dizinindeki di\u011fer <code>.conf<\/code> dosyalar\u0131n\u0131 da i\u00e7e aktar\u0131r. Bu, farkl\u0131 uygulamalar i\u00e7in ayr\u0131 ayr\u0131 yap\u0131land\u0131rma dosyalar\u0131 olu\u015fturarak d\u00fczeni sa\u011flaman\u0131za olanak tan\u0131r. Yeni bir uygulama i\u00e7in yap\u0131land\u0131rma olu\u015ftururken, genellikle <code>\/etc\/supervisor\/conf.d\/<\/code> dizinine yeni bir <code>.conf<\/code> dosyas\u0131 eklersiniz. \u00d6rne\u011fin, <code>my_app.conf<\/code> ad\u0131nda bir dosya olu\u015ftural\u0131m:<\/p>\n<pre><code class=\"language-ini\">[program:my_app]\ncommand=\/usr\/bin\/python3 \/path\/to\/your\/app.py\ndirectory=\/path\/to\/your\/app\nautostart=true\nautorestart=true\nstartretries=3\nuser=www-data\nstdout_logfile=\/var\/log\/supervisor\/my_app_stdout.log\nstderr_logfile=\/var\/log\/supervisor\/my_app_stderr.log\nloglevel=info\n<\/code><\/pre>\n<p>Bu basit yap\u0131land\u0131rma blo\u011fu, Supervisor’a bir Python uygulamas\u0131n\u0131 nas\u0131l y\u00f6netece\u011fini s\u00f6yler. <code>[program:my_app]<\/code> etiketi, y\u00f6netilecek s\u00fcrecin ad\u0131n\u0131 tan\u0131mlar. <code>command<\/code>, uygulaman\u0131z\u0131 ba\u015flatan komuttur. <code>directory<\/code>, uygulaman\u0131z\u0131n \u00e7al\u0131\u015faca\u011f\u0131 dizini belirtir. <code>autostart=true<\/code>, Supervisor ba\u015flad\u0131\u011f\u0131nda uygulaman\u0131n otomatik olarak ba\u015flamas\u0131n\u0131 sa\u011flar. <code>autorestart=true<\/code> ise, uygulama \u00e7\u00f6kerse veya durursa Supervisor’\u0131n onu otomatik olarak yeniden ba\u015flatmas\u0131n\u0131 emreder. <code>user<\/code> parametresi, uygulaman\u0131n hangi kullan\u0131c\u0131 alt\u0131nda \u00e7al\u0131\u015faca\u011f\u0131n\u0131 belirler, bu genellikle g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u00f6nemlidir. Son olarak, <code>stdout_logfile<\/code> ve <code>stderr_logfile<\/code>, uygulaman\u0131z\u0131n standart \u00e7\u0131kt\u0131 ve hata ak\u0131\u015flar\u0131n\u0131n yaz\u0131laca\u011f\u0131 log dosyalar\u0131n\u0131 tan\u0131mlar. Bu dosyalar, uygulaman\u0131zda bir sorun oldu\u011funda hata ay\u0131klama i\u00e7in kritik bilgiler i\u00e7erir. Yap\u0131land\u0131rma dosyan\u0131z\u0131 kaydettikten sonra, Supervisor’a yeni yap\u0131land\u0131rmay\u0131 y\u00fcklemesini s\u00f6ylemek i\u00e7in <code>supervisorctl<\/code> komutunu kullanman\u0131z gerekir.<\/p>\n<h2>Program Tan\u0131mlama ve Y\u00f6netimi: Supervisor ile S\u00fcre\u00e7lerinizi Kontrol Etme<\/h2>\n<p>Supervisor’\u0131n g\u00fcc\u00fc, s\u00fcre\u00e7lerinizi detayl\u0131 bir \u015fekilde tan\u0131mlama ve bunlar\u0131 merkezi bir noktadan y\u00f6netme yetene\u011finde yatar. Bir \u00f6nceki b\u00f6l\u00fcmde temel bir program tan\u0131m\u0131na de\u011finmi\u015ftik. \u015eimdi ise, <code>supervisord.conf<\/code> dosyas\u0131nda programlar\u0131 nas\u0131l daha kapsaml\u0131 tan\u0131mlayaca\u011f\u0131m\u0131z\u0131 ve <code>supervisorctl<\/code> komut arac\u0131yla bu s\u00fcre\u00e7leri nas\u0131l y\u00f6netece\u011fimizi daha yak\u0131ndan inceleyece\u011fiz. Her bir program tan\u0131m\u0131, uygulaman\u0131z\u0131n ihtiya\u00e7lar\u0131na g\u00f6re \u00f6zelle\u015ftirilebilen bir dizi parametre i\u00e7erir, bu da Supervisor’\u0131 inan\u0131lmaz derecede esnek k\u0131lar.<\/p>\n<h3>Program Yap\u0131land\u0131rma Parametreleri<\/h3>\n<p>Her <code>[program:program_ad\u0131]<\/code> blo\u011fu, ilgili s\u00fcrecin davran\u0131\u015f\u0131n\u0131 kontrol eden \u00e7e\u015fitli anahtar-de\u011fer \u00e7iftlerinden olu\u015fur. \u0130\u015fte s\u0131k\u00e7a kullan\u0131lan baz\u0131 \u00f6nemli parametreler ve a\u00e7\u0131klamalar\u0131:<\/p>\n<ul>\n<li><code>command<\/code>: S\u00fcreci ba\u015flatmak i\u00e7in \u00e7al\u0131\u015ft\u0131r\u0131lacak tam komut. \u00d6rne\u011fin, <code>\/usr\/bin\/python3 \/var\/www\/myapp\/app.py<\/code> veya <code>php \/var\/www\/myapp\/artisan queue:work<\/code>.<\/li>\n<li><code>directory<\/code>: S\u00fcrecin \u00e7al\u0131\u015faca\u011f\u0131 \u00e7al\u0131\u015fma dizini. Bu, uygulaman\u0131z\u0131n g\u00f6receli yollar\u0131 do\u011fru bulmas\u0131 i\u00e7in \u00f6nemlidir.<\/li>\n<li><code>autostart<\/code>: Supervisor ba\u015flad\u0131\u011f\u0131nda bu program\u0131n otomatik olarak ba\u015flay\u0131p ba\u015flamayaca\u011f\u0131n\u0131 belirler (<code>true<\/code> veya <code>false<\/code>). Genellikle <code>true<\/code> olarak ayarlan\u0131r.<\/li>\n<li><code>autorestart<\/code>: Program beklenmedik bir \u015fekilde durdu\u011funda Supervisor’\u0131n onu otomatik olarak yeniden ba\u015flat\u0131p ba\u015flatmayaca\u011f\u0131n\u0131 belirler (<code>true<\/code>, <code>false<\/code> veya <code>unexpected<\/code>). <code>unexpected<\/code>, program\u0131n beklenen \u00e7\u0131k\u0131\u015f koduyla (genellikle 0) de\u011fil, ba\u015fka bir kodla sonland\u0131\u011f\u0131nda yeniden ba\u015flat\u0131laca\u011f\u0131 anlam\u0131na gelir.<\/li>\n<li><code>startretries<\/code>: Program\u0131n art arda ka\u00e7 kez yeniden ba\u015flat\u0131lmaya \u00e7al\u0131\u015f\u0131laca\u011f\u0131n\u0131 belirler. Bu say\u0131 a\u015f\u0131ld\u0131\u011f\u0131nda program “FATAL” durumuna ge\u00e7er. Varsay\u0131lan de\u011fer 3’t\u00fcr.<\/li>\n<li><code>startsecs<\/code>: Program\u0131n “\u00e7al\u0131\u015f\u0131yor” olarak kabul edilmesi i\u00e7in ka\u00e7 saniye boyunca sorunsuz \u00e7al\u0131\u015fmas\u0131 gerekti\u011fini belirtir. Bu s\u00fcre i\u00e7inde program durursa, bir hata olarak kabul edilir ve <code>startretries<\/code> sayac\u0131 devreye girer.<\/li>\n<li><code>user<\/code>: Program\u0131n hangi sistem kullan\u0131c\u0131s\u0131 alt\u0131nda \u00e7al\u0131\u015faca\u011f\u0131n\u0131 belirler. G\u00fcvenlik a\u00e7\u0131s\u0131ndan, uygulamalar\u0131 root kullan\u0131c\u0131s\u0131 yerine ayr\u0131cal\u0131ks\u0131z bir kullan\u0131c\u0131 (\u00f6rne\u011fin <code>www-data<\/code> veya <code>nginx<\/code>) alt\u0131nda \u00e7al\u0131\u015ft\u0131rmak \u00f6nemlidir.<\/li>\n<li><code>numprocs<\/code>: Bu programdan ka\u00e7 adet \u00f6rnek \u00e7al\u0131\u015ft\u0131r\u0131laca\u011f\u0131n\u0131 belirtir. \u00d6zellikle kuyruk i\u015fleyicileri gibi paralel \u00e7al\u0131\u015fabilen uygulamalar i\u00e7in faydal\u0131d\u0131r. \u00d6rne\u011fin, <code>numprocs=4<\/code>.<\/li>\n<li><code>numprocs_start<\/code>: E\u011fer <code>numprocs<\/code> kullan\u0131l\u0131yorsa, s\u00fcre\u00e7lerin ba\u015flang\u0131\u00e7 indeksini belirler (varsay\u0131lan 0).<\/li>\n<li><code>process_name<\/code>: <code>numprocs<\/code> kullan\u0131ld\u0131\u011f\u0131nda her bir s\u00fcrecin ad\u0131n\u0131 dinamik olarak olu\u015fturmak i\u00e7in kullan\u0131l\u0131r. \u00d6rne\u011fin, <code>process_name=%(program_name)s_%(process_num)02d<\/code>.<\/li>\n<li><code>stdout_logfile<\/code>: S\u00fcrecin standart \u00e7\u0131kt\u0131s\u0131n\u0131n (<code>stdout<\/code>) yaz\u0131laca\u011f\u0131 dosya yolu.<\/li>\n<li><code>stderr_logfile<\/code>: S\u00fcrecin standart hata \u00e7\u0131kt\u0131s\u0131n\u0131n (<code>stderr<\/code>) yaz\u0131laca\u011f\u0131 dosya yolu.<\/li>\n<li><code>environment<\/code>: S\u00fcre\u00e7 i\u00e7in \u00f6zel ortam de\u011fi\u015fkenleri tan\u0131mlar. \u00d6rne\u011fin, <code>environment=ENV_VAR=\"de\u011fer\",ANOTHER_VAR=\"ba\u015fka_de\u011fer\"<\/code>.<\/li>\n<li><code>stopsignal<\/code>: S\u00fcreci durdurmak i\u00e7in g\u00f6nderilecek sinyali belirler (\u00f6rne\u011fin, <code>TERM<\/code>, <code>KILL<\/code>, <code>INT<\/code>). Varsay\u0131lan <code>TERM<\/code>‘dir.<\/li>\n<li><code>stopwaitsecs<\/code>: S\u00fcrecin <code>stopsignal<\/code> ald\u0131ktan sonra d\u00fczg\u00fcn bir \u015fekilde kapanmas\u0131 i\u00e7in beklenecek saniye say\u0131s\u0131. Bu s\u00fcre sonunda kapanmazsa <code>KILL<\/code> sinyali g\u00f6nderilir.<\/li>\n<\/ul>\n<h3><code>supervisorctl<\/code> ile S\u00fcre\u00e7leri Y\u00f6netme<\/h3>\n<p>Supervisor’\u0131n kalbi olan <code>supervisord<\/code> daemon’\u0131 arka planda \u00e7al\u0131\u015f\u0131rken, s\u00fcre\u00e7leri y\u00f6netmek i\u00e7in <code>supervisorctl<\/code> komut sat\u0131r\u0131 aray\u00fcz\u00fcn\u00fc kullan\u0131r\u0131z. Bu ara\u00e7, Supervisor’a komutlar g\u00f6ndermek ve s\u00fcre\u00e7lerin durumunu izlemek i\u00e7in kullan\u0131l\u0131r.<\/p>\n<p>Yeni bir program yap\u0131land\u0131rmas\u0131 ekledikten veya mevcut bir yap\u0131land\u0131rmay\u0131 de\u011fi\u015ftirdikten sonra, Supervisor’\u0131n bu de\u011fi\u015fiklikleri alg\u0131lamas\u0131 i\u00e7in yap\u0131land\u0131rma dosyalar\u0131n\u0131 yeniden y\u00fcklemesini s\u00f6ylemeniz gerekir:<\/p>\n<pre><code class=\"language-bash\">sudo supervisorctl reread\n<\/code><\/pre>\n<p>Bu komut, Supervisor’a yeni veya de\u011fi\u015ftirilmi\u015f yap\u0131land\u0131rma dosyalar\u0131n\u0131 okumas\u0131n\u0131 s\u00f6yler. Ard\u0131ndan, bu de\u011fi\u015fiklikleri uygulamak i\u00e7in <code>update<\/code> komutunu kullanmal\u0131s\u0131n\u0131z:<\/p>\n<pre><code class=\"language-bash\">sudo supervisorctl update\n<\/code><\/pre>\n<p><code>update<\/code> komutu, yeni programlar\u0131 ba\u015flat\u0131r ve kald\u0131r\u0131lan programlar\u0131 durdurur. Mevcut ve \u00e7al\u0131\u015fan programlar\u0131n yap\u0131land\u0131rmalar\u0131 de\u011fi\u015ftiyse, bu programlar\u0131 yeniden ba\u015flatman\u0131z gerekebilir. Di\u011fer yayg\u0131n <code>supervisorctl<\/code> komutlar\u0131 \u015funlard\u0131r:<\/p>\n<ul>\n<li><code>status<\/code>: T\u00fcm programlar\u0131n ve gruplar\u0131n mevcut durumunu g\u00f6sterir.\n<pre><code class=\"language-bash\">sudo supervisorctl status\n<\/code><\/pre>\n<\/li>\n<li><code>start program_ad\u0131<\/code>: Belirtilen program\u0131 ba\u015flat\u0131r.\n<pre><code class=\"language-bash\">sudo supervisorctl start my_app\n<\/code><\/pre>\n<\/li>\n<li><code>stop program_ad\u0131<\/code>: Belirtilen program\u0131 durdurur.\n<pre><code class=\"language-bash\">sudo supervisorctl stop my_app\n<\/code><\/pre>\n<\/li>\n<li><code>restart program_ad\u0131<\/code>: Belirtilen program\u0131 yeniden ba\u015flat\u0131r.\n<pre><code class=\"language-bash\">sudo supervisorctl restart my_app\n<\/code><\/pre>\n<\/li>\n<li><code>tail -f program_ad\u0131<\/code>: Belirtilen program\u0131n standart \u00e7\u0131kt\u0131s\u0131n\u0131 ger\u00e7ek zamanl\u0131 olarak izler.\n<pre><code class=\"language-bash\">sudo supervisorctl tail -f my_app\n<\/code><\/pre>\n<\/li>\n<li><code>shutdown<\/code>: T\u00fcm Supervisor s\u00fcre\u00e7lerini ve Supervisor daemon’\u0131n\u0131 durdurur. Dikkatli kullan\u0131lmal\u0131d\u0131r.\n<pre><code class=\"language-bash\">sudo supervisorctl shutdown\n<\/code><\/pre>\n<\/li>\n<li><code>reload<\/code>: Supervisor daemon’\u0131n\u0131 durdurur ve yeniden ba\u015flat\u0131r, t\u00fcm programlar\u0131 yap\u0131land\u0131rma dosyalar\u0131na g\u00f6re yeniden ba\u015flat\u0131r. Bu da dikkatli kullan\u0131lmal\u0131d\u0131r.\n<pre><code class=\"language-bash\">sudo supervisorctl reload\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>Bu komutlarla, uygulamalar\u0131n\u0131z\u0131n ya\u015fam d\u00f6ng\u00fcs\u00fcn\u00fc tamamen kontrol edebilir, onlar\u0131 gerekti\u011finde ba\u015flat\u0131p durdurabilir ve durumlar\u0131n\u0131 kolayca izleyebilirsiniz. Supervisor, bu sayede sisteminizdeki t\u00fcm arka plan s\u00fcre\u00e7leri i\u00e7in tek bir y\u00f6netim noktas\u0131 sunarak operasyonel karma\u015f\u0131kl\u0131\u011f\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde azalt\u0131r.<\/p>\n<h2>\u0130leri D\u00fczey Yap\u0131land\u0131rma ve \u0130zleme Teknikleri: Daha Sa\u011flam Sistemler \u0130\u00e7in<\/h2>\n<p>Supervisor, basit s\u00fcre\u00e7 y\u00f6netiminin \u00f6tesinde, daha karma\u015f\u0131k ve sa\u011flam sistemler kurmak i\u00e7in kullan\u0131labilecek bir dizi geli\u015fmi\u015f \u00f6zellik sunar. Bu b\u00f6l\u00fcmde, s\u00fcre\u00e7 gruplar\u0131 olu\u015fturmaktan olay dinleyicilerini yap\u0131land\u0131rmaya, web aray\u00fcz\u00fcn\u00fc etkinle\u015ftirmekten log y\u00f6netimine kadar \u00e7e\u015fitli ileri d\u00fczey teknikleri inceleyece\u011fiz. Bu \u00f6zellikler, \u00f6zellikle b\u00fcy\u00fck \u00f6l\u00e7ekli veya y\u00fcksek eri\u015filebilirlik gerektiren uygulamalar i\u00e7in Supervisor’\u0131 vazge\u00e7ilmez bir ara\u00e7 haline getirir.<\/p>\n<h3>S\u00fcre\u00e7 Gruplar\u0131 (<code>[group:]<\/code>) ile D\u00fczen Sa\u011flama<\/h3>\n<p>Birden fazla ili\u015fkili s\u00fcreciniz oldu\u011funda (\u00f6rne\u011fin, bir web uygulamas\u0131 i\u00e7in Gunicorn, Celery worker’lar\u0131 ve bir beat scheduler), bunlar\u0131 ayr\u0131 ayr\u0131 y\u00f6netmek yerine bir grup alt\u0131nda toplamak \u00e7ok daha pratiktir. S\u00fcre\u00e7 gruplar\u0131, t\u00fcm bu s\u00fcre\u00e7leri tek bir komutla ba\u015flatman\u0131za, durdurman\u0131za veya yeniden ba\u015flatman\u0131za olanak tan\u0131r. Bir grup tan\u0131mlamak i\u00e7in <code>supervisord.conf<\/code> dosyan\u0131za a\u015fa\u011f\u0131daki gibi bir b\u00f6l\u00fcm eklersiniz:<\/p>\n<pre><code class=\"language-ini\">[group:my_app_group]\nprograms=web,worker,scheduler\npriority=999\n<\/code><\/pre>\n<p>Burada, <code>programs<\/code> parametresi, bu gruba dahil edilecek programlar\u0131n adlar\u0131n\u0131 virg\u00fclle ay\u0131rarak belirtir. <code>priority<\/code> ise, bu grubun di\u011fer gruplara veya ba\u011f\u0131ms\u0131z programlara g\u00f6re ba\u015flat\u0131lma\/durdurulma \u00f6nceli\u011fini belirler. Daha y\u00fcksek \u00f6ncelikli gruplar \u00f6nce ba\u015flat\u0131l\u0131r, sonra durdurulur. Art\u0131k <code>supervisorctl<\/code> ile t\u00fcm grubu y\u00f6netebilirsiniz:<\/p>\n<pre><code class=\"language-bash\">sudo supervisorctl start my_app_group:*\nsudo supervisorctl stop my_app_group:*\nsudo supervisorctl restart my_app_group:*\n<\/code><\/pre>\n<p>Bu, \u00f6zellikle da\u011f\u0131t\u0131lm\u0131\u015f sistemlerde veya birden fazla bile\u015fenden olu\u015fan uygulamalarda y\u00f6netim y\u00fck\u00fcn\u00fc \u00f6nemli \u00f6l\u00e7\u00fcde azalt\u0131r.<\/p>\n<h3>Olay Dinleyicileri (<code>[eventlistener:]<\/code>) ile Otomasyon<\/h3>\n<p>Supervisor, s\u00fcre\u00e7lerde meydana gelen olaylar\u0131 (\u00f6rne\u011fin, bir program\u0131n ba\u015flamas\u0131, durmas\u0131 veya \u00e7\u00f6kmesi) dinleyebilir ve bu olaylara yan\u0131t olarak belirli komut dosyalar\u0131n\u0131 \u00e7al\u0131\u015ft\u0131rabilir. Bu \u00f6zellik, \u00f6zel bildirimler g\u00f6ndermek, sistem durumunu g\u00fcncellemek veya karma\u015f\u0131k kurtarma senaryolar\u0131n\u0131 otomatikle\u015ftirmek i\u00e7in kullan\u0131labilir. Bir olay dinleyici tan\u0131mlamak i\u00e7in <code>supervisord.conf<\/code> dosyan\u0131za a\u015fa\u011f\u0131daki gibi bir b\u00f6l\u00fcm eklersiniz:<\/p>\n<pre><code class=\"language-ini\">[eventlistener:my_listener]\ncommand=\/usr\/bin\/python3 \/path\/to\/your\/event_handler.py\nevents=PROCESS_STATE_FATAL,PROCESS_STATE_STOPPED,PROCESS_STATE_EXITED\nbuffer_size=10\n<\/code><\/pre>\n<p><code>command<\/code>, olay\u0131 i\u015fleyecek komut dosyas\u0131n\u0131n yolunu belirtir. <code>events<\/code>, dinlenecek olay t\u00fcrlerini virg\u00fclle ay\u0131rarak listeler. \u00d6rne\u011fin, <code>PROCESS_STATE_FATAL<\/code> bir s\u00fcrecin \u00f6l\u00fcmc\u00fcl bir hata ile durdu\u011funu, <code>PROCESS_STATE_STOPPED<\/code> d\u00fczg\u00fcn bir \u015fekilde durduruldu\u011funu ve <code>PROCESS_STATE_EXITED<\/code> ise normal bir \u015fekilde sonland\u0131\u011f\u0131n\u0131 g\u00f6sterir. Olay i\u015fleyici komut dosyas\u0131, olay bilgilerini standart giri\u015ften okuyarak yan\u0131t verebilir. Bu, Supervisor’\u0131n esnekli\u011fini art\u0131ran ve otomasyon yeteneklerini geni\u015fleten g\u00fc\u00e7l\u00fc bir \u00f6zelliktir.<\/p>\n<h3>Web Aray\u00fcz\u00fc (<code>[inet_http_server]<\/code>) ile Kolay \u0130zleme<\/h3>\n<p>Supervisor, s\u00fcre\u00e7lerinizi bir web taray\u0131c\u0131s\u0131 \u00fczerinden izlemenizi ve y\u00f6netmenizi sa\u011flayan basit bir web aray\u00fcz\u00fcne sahiptir. Bu aray\u00fcz, \u00f6zellikle sunucuya SSH eri\u015fimi olmayan veya h\u0131zl\u0131 bir g\u00f6rsel genel bak\u0131\u015fa ihtiya\u00e7 duyan durumlar i\u00e7in kullan\u0131\u015fl\u0131d\u0131r. Web aray\u00fcz\u00fcn\u00fc etkinle\u015ftirmek i\u00e7in <code>supervisord.conf<\/code> dosyan\u0131z\u0131n <code>[supervisord]<\/code> b\u00f6l\u00fcm\u00fcne veya ayr\u0131 bir b\u00f6l\u00fcme a\u015fa\u011f\u0131daki sat\u0131rlar\u0131 eklemeniz gerekir:<\/p>\n<pre><code class=\"language-ini\">[inet_http_server]\nport=127.0.0.1:9001\nusername=user\npassword=pass\n<\/code><\/pre>\n<p><code>port<\/code>, web aray\u00fcz\u00fcn\u00fcn dinleyece\u011fi IP adresi ve portu belirtir. G\u00fcvenlik nedeniyle genellikle <code>127.0.0.1<\/code> (localhost) olarak ayarlan\u0131r ve bir ters proxy (Nginx veya Apache gibi) arkas\u0131na yerle\u015ftirilir. <code>username<\/code> ve <code>password<\/code> ise aray\u00fcze eri\u015fim i\u00e7in kimlik do\u011frulama bilgileridir. Yap\u0131land\u0131rmay\u0131 g\u00fcncelledikten sonra, taray\u0131c\u0131n\u0131zdan <code>http:\/\/sunucu_ip_adresi:9001<\/code> adresine giderek web aray\u00fcz\u00fcne eri\u015febilirsiniz. Burada t\u00fcm programlar\u0131n\u0131z\u0131n durumunu g\u00f6rebilir, onlar\u0131 ba\u015flat\u0131p durdurabilir ve loglar\u0131na eri\u015febilirsiniz.<\/p>\n<h3>Log Y\u00f6netimi ve S\u00fcre\u00e7 \u00d6ncelikleri<\/h3>\n<p>Loglar, sorun giderme ve sistem sa\u011fl\u0131\u011f\u0131n\u0131 izleme a\u00e7\u0131s\u0131ndan kritik \u00f6neme sahiptir. Supervisor, her program i\u00e7in ayr\u0131 ayr\u0131 <code>stdout_logfile<\/code> ve <code>stderr_logfile<\/code> tan\u0131mlaman\u0131za olanak tan\u0131r. Bu log dosyalar\u0131n\u0131n d\u00fczenli olarak d\u00f6nd\u00fcr\u00fclmesi (rotate edilmesi) ve temizlenmesi, disk alan\u0131n\u0131n dolmas\u0131n\u0131 \u00f6nlemek i\u00e7in \u00f6nemlidir. <code>logrotate<\/code> gibi sistem ara\u00e7lar\u0131n\u0131 kullanarak bu log dosyalar\u0131n\u0131 otomatik olarak y\u00f6netebilirsiniz. Ayr\u0131ca, <code>[program:]<\/code> b\u00f6l\u00fcm\u00fcndeki <code>priority<\/code> parametresi, programlar\u0131n ba\u015flat\u0131lma ve durdurulma s\u0131ras\u0131n\u0131 belirler. Daha d\u00fc\u015f\u00fck \u00f6ncelikli programlar \u00f6nce ba\u015flat\u0131l\u0131r ve sonra durdurulur. Bu, ba\u011f\u0131ml\u0131l\u0131klar\u0131 olan programlar i\u00e7in \u00f6nemlidir; \u00f6rne\u011fin, veritaban\u0131 ba\u011flant\u0131s\u0131 gerektiren bir uygulaman\u0131n, veritaban\u0131 servisi ba\u015flamadan ba\u015flamamas\u0131n\u0131 sa\u011flayabilirsiniz.<\/p>\n<p>Bu ileri d\u00fczey yap\u0131land\u0131rma ve izleme teknikleri, Supervisor’\u0131 sadece bir s\u00fcre\u00e7 y\u00f6neticisinden \u00f6te, karma\u015f\u0131k sistemlerin g\u00fcvenilirli\u011fini ve y\u00f6netilebilirli\u011fini art\u0131ran kapsaml\u0131 bir ara\u00e7 haline getirir. Do\u011fru yap\u0131land\u0131rma ile uygulamalar\u0131n\u0131z\u0131n kesintisiz \u00e7al\u0131\u015ft\u0131\u011f\u0131ndan emin olabilir ve olas\u0131 sorunlara kar\u015f\u0131 proaktif \u00e7\u00f6z\u00fcmler geli\u015ftirebilirsiniz.<\/p>\n<h2>Ger\u00e7ek D\u00fcnya Uygulamalar\u0131 ve Vaka Analizleri: Supervisor’\u0131n G\u00fcc\u00fc<\/h2>\n<p>Supervisor’\u0131n teorik faydalar\u0131n\u0131 anlamak bir yana, onu ger\u00e7ek d\u00fcnya senaryolar\u0131nda nas\u0131l uygulayabilece\u011fimizi g\u00f6rmek, arac\u0131n de\u011ferini tam olarak kavramam\u0131z\u0131 sa\u011flar. \u00c7e\u015fitli sekt\u00f6rlerdeki ve teknoloji y\u0131\u011f\u0131nlar\u0131ndaki bir\u00e7ok uygulama, s\u00fcre\u00e7lerini y\u00f6netmek i\u00e7in Supervisor’a g\u00fcvenir. \u0130\u015fte Supervisor’\u0131n yayg\u0131n olarak kullan\u0131ld\u0131\u011f\u0131 baz\u0131 pratik senaryolar ve \u00f6rnek yap\u0131land\u0131rmalar:<\/p>\n<h3>1. Web Uygulamalar\u0131 i\u00e7in Gunicorn\/uWSGI ve Nginx Y\u00f6netimi<\/h3>\n<p>Modern Python (Django, Flask) veya Ruby (Rails) web uygulamalar\u0131 genellikle bir WSGI (Web Server Gateway Interface) sunucusu (Gunicorn, uWSGI) ile birlikte \u00e7al\u0131\u015f\u0131r ve Nginx gibi bir ters proxy sunucusu taraf\u0131ndan \u00f6nbelleklenir. Supervisor, bu bile\u015fenlerin her birini ba\u011f\u0131ms\u0131z s\u00fcre\u00e7ler olarak y\u00f6netmek i\u00e7in idealdir. \u00d6rne\u011fin, bir Django uygulamas\u0131n\u0131 Gunicorn ile \u00e7al\u0131\u015ft\u0131rmak i\u00e7in a\u015fa\u011f\u0131daki gibi bir yap\u0131land\u0131rma kullanabilirsiniz:<\/p>\n<pre><code class=\"language-ini\">; \/etc\/supervisor\/conf.d\/django_app.conf\n[program:gunicorn_app]\ncommand=\/path\/to\/your\/venv\/bin\/gunicorn myproject.wsgi:application --bind 0.0.0.0:8000\ndirectory=\/path\/to\/your\/django_project\nuser=www-data\nautostart=true\nautorestart=true\nredirect_stderr=true\nstdout_logfile=\/var\/log\/supervisor\/gunicorn_app.log\nstderr_logfile=\/var\/log\/supervisor\/gunicorn_app.err.log\nenvironment=PATH=\"\/path\/to\/your\/venv\/bin\",DJANGO_SETTINGS_MODULE=\"myproject.settings.production\"\n\n[program:nginx]\ncommand=\/usr\/sbin\/nginx -g \"daemon off;\"\nautostart=true\nautorestart=true\nuser=root ; Nginx genellikle root olarak ba\u015flar ve worker s\u00fcre\u00e7lerini ayr\u0131cal\u0131ks\u0131z kullan\u0131c\u0131lara b\u0131rak\u0131r.\nredirect_stderr=true\nstdout_logfile=\/var\/log\/supervisor\/nginx.log\nstderr_logfile=\/var\/log\/supervisor\/nginx.err.log\n<\/code><\/pre>\n<p>Bu yap\u0131land\u0131rmada, Gunicorn s\u00fcreci sanal ortam\u0131n\u0131zda ba\u015flar ve Django uygulaman\u0131z\u0131 sunar. Nginx ise ayr\u0131 bir Supervisor s\u00fcreci olarak \u00e7al\u0131\u015f\u0131r ve Gunicorn’a gelen istekleri y\u00f6nlendirir. Her iki s\u00fcrecin de <code>autostart<\/code> ve <code>autorestart<\/code> \u00f6zellikleriyle kesintisiz \u00e7al\u0131\u015fmas\u0131 sa\u011flan\u0131r. Nginx’in <code>-g \"daemon off;\"<\/code> komutu, Nginx’i arka planda daemon olarak de\u011fil, \u00f6n planda \u00e7al\u0131\u015facak \u015fekilde ba\u015flat\u0131r, b\u00f6ylece Supervisor onu do\u011fru \u015fekilde izleyebilir.<\/p>\n<h3>2. Arka Plan Kuyruk \u0130\u015fleyicileri (Celery, RabbitMQ)<\/h3>\n<p>Asenkron g\u00f6revleri i\u015flemek i\u00e7in kullan\u0131lan kuyruk sistemleri (\u00f6rne\u011fin Python i\u00e7in Celery, Node.js i\u00e7in BullMQ veya Redis Queue), uygulamalar\u0131n yan\u0131t verme s\u00fcresini iyile\u015ftirmek ve yo\u011fun i\u015flemleri arka plana ta\u015f\u0131mak i\u00e7in vazge\u00e7ilmezdir. Supervisor, bu kuyruk i\u015fleyicilerini y\u00f6netmek i\u00e7in m\u00fckemmel bir ara\u00e7t\u0131r, \u00f6zellikle birden fazla worker s\u00fcrecini paralel \u00e7al\u0131\u015ft\u0131rmak gerekti\u011finde.<\/p>\n<pre><code class=\"language-ini\">; \/etc\/supervisor\/conf.d\/celery_workers.conf\n[program:celery_worker_1]\ncommand=\/path\/to\/your\/venv\/bin\/celery -A myproject worker -l info --concurrency=4 -n worker1@%h\ndirectory=\/path\/to\/your\/django_project\nuser=www-data\nautostart=true\nautorestart=true\nnumprocs=1 ; Tek bir worker s\u00fcreci i\u00e7in\nprocess_name=%(program_name)s\nstdout_logfile=\/var\/log\/supervisor\/celery_worker1.log\nstderr_logfile=\/var\/log\/supervisor\/celery_worker1.err.log\nenvironment=PATH=\"\/path\/to\/your\/venv\/bin\",DJANGO_SETTINGS_MODULE=\"myproject.settings.production\"\n\n[program:celery_beat]\ncommand=\/path\/to\/your\/venv\/bin\/celery -A myproject beat -l info --scheduler django_celery_beat.schedulers:DatabaseScheduler\ndirectory=\/path\/to\/your\/django_project\nuser=www-data\nautostart=true\nautorestart=true\nstdout_logfile=\/var\/log\/supervisor\/celery_beat.log\nstderr_logfile=\/var\/log\/supervisor\/celery_beat.err.log\nenvironment=PATH=\"\/path\/to\/your\/venv\/bin\",DJANGO_SETTINGS_MODULE=\"myproject.settings.production\"\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, Celery worker’\u0131 ve Celery Beat zamanlay\u0131c\u0131s\u0131 ayr\u0131 Supervisor programlar\u0131 olarak tan\u0131mlanm\u0131\u015ft\u0131r. <code>numprocs<\/code> ile birden fazla worker \u00f6rne\u011fi \u00e7al\u0131\u015ft\u0131rabilir, <code>process_name<\/code> ile her birine benzersiz isimler verebilirsiniz. Bu, her bir worker’\u0131n izlenmesini ve loglar\u0131n\u0131n ayr\u0131\u015ft\u0131r\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131r\u0131r. Herhangi bir worker’\u0131n \u00e7\u00f6kmesi durumunda Supervisor onu otomatik olarak yeniden ba\u015flat\u0131r, b\u00f6ylece kuyruk i\u015fleme kesintiye u\u011framaz.<\/p>\n<h3>3. \u00d6zel Arka Plan Scriptleri ve G\u00f6revleri<\/h3>\n<p>Sadece web uygulamalar\u0131 veya kuyruk i\u015fleyicileri de\u011fil, ayn\u0131 zamanda uzun s\u00fcreli veri senkronizasyon scriptleri, anl\u0131k bildirim dinleyicileri veya \u00f6zel veri i\u015fleme g\u00f6revleri gibi herhangi bir arka plan scripti de Supervisor ile y\u00f6netilebilir. Bu, \u00f6zellikle <code>cron<\/code>‘un belirli zaman aral\u0131klar\u0131yla \u00e7al\u0131\u015ft\u0131\u011f\u0131 senaryolar\u0131n aksine, s\u00fcrekli \u00e7al\u0131\u015fmas\u0131 gereken g\u00f6revler i\u00e7in faydal\u0131d\u0131r.<\/p>\n<pre><code class=\"language-ini\">; \/etc\/supervisor\/conf.d\/data_sync.conf\n[program:data_synchronizer]\ncommand=\/usr\/bin\/python3 \/path\/to\/your\/scripts\/sync_data.py\ndirectory=\/path\/to\/your\/scripts\nuser=app_user\nautostart=true\nautorestart=true\nstartretries=5\nstdout_logfile=\/var\/log\/supervisor\/data_sync.log\nstderr_logfile=\/var\/log\/supervisor\/data_sync.err.log\n<\/code><\/pre>\n<p>Bu \u00f6rnek, belirli bir Python scriptini s\u00fcrekli olarak \u00e7al\u0131\u015ft\u0131r\u0131r. E\u011fer script beklenmedik bir \u015fekilde durursa, Supervisor onu be\u015f kez yeniden ba\u015flatmaya \u00e7al\u0131\u015f\u0131r. Bu t\u00fcr scriptler i\u00e7in loglar\u0131n ayr\u0131nt\u0131l\u0131 bir \u015fekilde tutulmas\u0131, olas\u0131 veri tutars\u0131zl\u0131klar\u0131n\u0131 veya hatalar\u0131 izlemek i\u00e7in kritik \u00f6neme sahiptir. Supervisor, bu t\u00fcr \u00f6zel g\u00f6revlerin g\u00fcvenilirli\u011fini sa\u011flayarak, manuel m\u00fcdahale ihtiyac\u0131n\u0131 ortadan kald\u0131r\u0131r ve sistem genelinde istikrarl\u0131 bir \u00e7al\u0131\u015fma ortam\u0131 sunar.<\/p>\n<p>Bu vaka analizleri, Supervisor’\u0131n \u00e7e\u015fitli senaryolarda nas\u0131l kullan\u0131labilece\u011fini ve s\u00fcre\u00e7 y\u00f6netimini nas\u0131l basitle\u015ftirdi\u011fini a\u00e7\u0131k\u00e7a g\u00f6stermektedir. \u0130ster k\u00fc\u00e7\u00fck bir proje ister b\u00fcy\u00fck \u00f6l\u00e7ekli bir kurumsal uygulama olsun, Supervisor s\u00fcre\u00e7lerinizi g\u00fcvenilir bir \u015fekilde y\u00f6netmek i\u00e7in g\u00fc\u00e7l\u00fc ve esnek bir \u00e7\u00f6z\u00fcmd\u00fcr.<\/p>\n<h2>Sonu\u00e7 ve Gelecek Ad\u0131mlar: S\u00fcre\u00e7 Y\u00f6netiminde Ustal\u0131k<\/h2>\n<p>Bu makale boyunca, Supervisor’\u0131n ne oldu\u011funu, neden modern sistemlerde vazge\u00e7ilmez bir ara\u00e7 haline geldi\u011fini, nas\u0131l kurulaca\u011f\u0131n\u0131 ve s\u00fcre\u00e7lerinizi nas\u0131l etkili bir \u015fekilde y\u00f6netece\u011finizi ad\u0131m ad\u0131m \u00f6\u011frendiniz. Temel kurulumdan ileri d\u00fczey yap\u0131land\u0131rma se\u00e7eneklerine ve ger\u00e7ek d\u00fcnya senaryolar\u0131na kadar geni\u015f bir yelpazeyi kapsad\u0131k. Supervisor sayesinde, arka plan s\u00fcre\u00e7lerinizin g\u00fcvenilirli\u011fini art\u0131rabilir, olas\u0131 kesintileri en aza indirebilir ve sistemlerinizin genel kararl\u0131l\u0131\u011f\u0131n\u0131 sa\u011flamla\u015ft\u0131rabilirsiniz. Art\u0131k web uygulamalar\u0131n\u0131z\u0131n, kuyruk i\u015fleyicilerinizin veya \u00f6zel arka plan g\u00f6revlerinizin her zaman ayakta oldu\u011fundan emin olabilirsiniz.<\/p>\n<p>S\u00fcre\u00e7 y\u00f6netiminde ustala\u015fmak, sadece ara\u00e7lar\u0131 bilmekle kalmaz, ayn\u0131 zamanda bu ara\u00e7lar\u0131 kendi \u00f6zel ihtiya\u00e7lar\u0131n\u0131za g\u00f6re uyarlayabilmekle de ilgilidir. Supervisor, sundu\u011fu esneklik ve zengin \u00f6zellik seti ile bu adaptasyonu kolayla\u015ft\u0131r\u0131r. Unutmay\u0131n ki, her uygulaman\u0131n kendine \u00f6zg\u00fc gereksinimleri vard\u0131r ve Supervisor yap\u0131land\u0131rman\u0131z\u0131 buna g\u00f6re ayarlamak, en iyi performans\u0131 ve g\u00fcvenilirli\u011fi elde etmenizi sa\u011flayacakt\u0131r. Loglar\u0131 d\u00fczenli olarak kontrol etmek, s\u00fcre\u00e7lerinizi do\u011fru kullan\u0131c\u0131lar alt\u0131nda \u00e7al\u0131\u015ft\u0131rmak ve hata durumlar\u0131nda otomatik bildirimler ayarlamak gibi en iyi uygulamalar\u0131 benimsemek, sistemlerinizin sorunsuz \u00e7al\u0131\u015fmaya devam etmesi i\u00e7in kritik \u00f6neme sahiptir. Supervisor ile s\u00fcre\u00e7 y\u00f6netiminde yeni bir seviyeye ula\u015ft\u0131\u011f\u0131n\u0131za inan\u0131yoruz ve bu bilgileri projelerinizde ba\u015far\u0131yla uygulaman\u0131z\u0131 diliyoruz.<\/p>\n<h3>S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h3>\n<ol>\n<li>\n <strong>Supervisor neden <code>systemd<\/code> veya <code>init.d<\/code> yerine tercih edilmeli?<\/strong><\/p>\n<p>Supervisor, \u00f6zellikle birden fazla Python uygulamas\u0131 veya \u00f6zel script gibi \u00e7ok say\u0131da uygulaman\u0131n bir arada \u00e7al\u0131\u015ft\u0131\u011f\u0131 durumlarda daha esnek ve kullan\u0131c\u0131 dostu bir y\u00f6netim aray\u00fcz\u00fc sunar. <code>systemd<\/code> sistem servisleri i\u00e7in genel bir \u00e7\u00f6z\u00fcmd\u00fcr, ancak Supervisor uygulama s\u00fcre\u00e7lerini uygulama d\u00fczeyinde daha detayl\u0131 y\u00f6netme, otomatik yeniden ba\u015flatma, loglama ve gruplama gibi \u00f6zel yeteneklere sahiptir. Ayr\u0131ca, daha az karma\u015f\u0131k yap\u0131land\u0131rma ile h\u0131zl\u0131 bir \u015fekilde devreye al\u0131nabilir.<\/p>\n<\/li>\n<li>\n <strong>Supervisor bir s\u00fcrecin \u00e7\u00f6kt\u00fc\u011f\u00fcn\u00fc nas\u0131l anlar ve yeniden ba\u015flat\u0131r?<\/strong><\/p>\n<p>Supervisor, y\u00f6netti\u011fi her bir s\u00fcrecin PID’ini (Process ID) izler. E\u011fer bir s\u00fcre\u00e7 beklenmedik bir \u015fekilde sonlan\u0131rsa (yani beklenen \u00e7\u0131k\u0131\u015f koduyla de\u011filse veya Supervisor’\u0131n kontrol\u00fc d\u0131\u015f\u0131nda kapan\u0131rsa), Supervisor bunu alg\u0131lar. Yap\u0131land\u0131rman\u0131zdaki <code>autorestart=true<\/code> veya <code>autorestart=unexpected<\/code> parametreleri sayesinde, Supervisor s\u00fcreci otomatik olarak yeniden ba\u015flat\u0131r ve bu i\u015flemi <code>startretries<\/code> parametresiyle belirlenen deneme say\u0131s\u0131 kadar tekrarlar.<\/p>\n<\/li>\n<li>\n <strong>Bir program\u0131n loglar\u0131n\u0131 nas\u0131l izleyebilirim?<\/strong><\/p>\n<p>Her program tan\u0131m\u0131nda <code>stdout_logfile<\/code> ve <code>stderr_logfile<\/code> parametreleriyle log dosyalar\u0131n\u0131n yollar\u0131n\u0131 belirtirsiniz. Bu dosyalara do\u011frudan <code>tail -f \/var\/log\/supervisor\/my_app.log<\/code> gibi komutlarla eri\u015febilece\u011finiz gibi, <code>sudo supervisorctl tail -f my_app<\/code> komutunu kullanarak da loglar\u0131 ger\u00e7ek zamanl\u0131 olarak izleyebilirsiniz. Web aray\u00fcz\u00fc etkinse, program\u0131n detay sayfas\u0131ndan da loglara ula\u015fabilirsiniz.<\/p>\n<\/li>\n<li>\n <strong>Supervisor yap\u0131land\u0131rmas\u0131nda yapt\u0131\u011f\u0131m de\u011fi\u015fiklikleri nas\u0131l uygular\u0131m?<\/strong><\/p>\n<p>Yap\u0131land\u0131rma dosyalar\u0131nda (genellikle <code>\/etc\/supervisor\/conf.d\/<\/code> alt\u0131ndaki <code>.conf<\/code> dosyalar\u0131) de\u011fi\u015fiklik yapt\u0131ktan sonra, Supervisor’a bu de\u011fi\u015fiklikleri okumas\u0131n\u0131 ve uygulamas\u0131n\u0131 s\u00f6ylemeniz gerekir. Bunu yapmak i\u00e7in s\u0131ras\u0131yla <code>sudo supervisorctl reread<\/code> ve ard\u0131ndan <code>sudo supervisorctl update<\/code> komutlar\u0131n\u0131 kullanmal\u0131s\u0131n\u0131z. <code>reread<\/code> yeni yap\u0131land\u0131rmalar\u0131 alg\u0131lar, <code>update<\/code> ise bu de\u011fi\u015fiklikleri mevcut s\u00fcre\u00e7lere uygular (yeni s\u00fcre\u00e7leri ba\u015flat\u0131r, kald\u0131r\u0131lanlar\u0131 durdurur).<\/p>\n<\/li>\n<li>\n <strong>Supervisor’\u0131 farkl\u0131 kullan\u0131c\u0131lar alt\u0131nda \u00e7al\u0131\u015ft\u0131rmak g\u00fcvenli midir?<\/strong><\/p>\n<p>Evet, kesinlikle g\u00fcvenlidir ve hatta g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u015fiddetle tavsiye edilir. Her <code>[program:]<\/code> blo\u011funda <code>user=kullan\u0131c\u0131_ad\u0131<\/code> parametresini kullanarak, o program\u0131n belirli bir ayr\u0131cal\u0131ks\u0131z kullan\u0131c\u0131 alt\u0131nda \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flayabilirsiniz. Bu, bir uygulaman\u0131n g\u00fcvenlik a\u00e7\u0131\u011f\u0131 nedeniyle tehlikeye girmesi durumunda, sald\u0131rgan\u0131n sistem \u00fczerinde elde edebilece\u011fi yetkileri s\u0131n\u0131rlar. Supervisor’\u0131n kendisi genellikle root ayr\u0131cal\u0131klar\u0131yla ba\u015flar, ancak y\u00f6netti\u011fi s\u00fcre\u00e7leri belirlenen ayr\u0131cal\u0131ks\u0131z kullan\u0131c\u0131lar alt\u0131nda \u00e7al\u0131\u015ft\u0131r\u0131r.<\/p>\n<\/li>\n<\/ol>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Supervisor Kurulumu ve Y\u00f6netimi: S\u00fcre\u00e7lerinizi Nas\u0131l Otomatikle\u015ftirirsiniz? Modern yaz\u0131l\u0131m geli\u015ftirme d\u00fcnyas\u0131nda, uygulamalar\u0131n arka planda kesintisiz \u00e7al\u0131\u015fmas\u0131 hayati \u00f6neme…","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":[1],"tags":[],"class_list":{"0":"post-41218","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\n<title>S\u00fcre\u00e7 Y\u00f6netiminde Supervisor: Neden Vazge\u00e7ilmez Bir Ara\u00e7?<\/title>\n<meta name=\"description\" content=\"Modern yaz\u0131l\u0131m geli\u015ftirme d\u00fcnyas\u0131nda, uygulamalar\u0131n arka planda kesintisiz \u00e7al\u0131\u015fmas\u0131 hayati \u00f6neme sahiptir.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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