{"id":475,"date":"2025-09-10T16:35:15","date_gmt":"2025-09-10T13:35:15","guid":{"rendered":"https:\/\/destek.narhost.com\/?p=475"},"modified":"2026-09-14T22:21:41","modified_gmt":"2026-09-14T19:21:41","slug":"could-not-load-host-key-etc-ssh-ssh_host_ed25519_key-hatasi-nasil-cozulur","status":"publish","type":"post","link":"https:\/\/narhost.com\/destek\/could-not-load-host-key-etc-ssh-ssh_host_ed25519_key-hatasi-nasil-cozulur\/","title":{"rendered":"Could Not Load Host Key ssh_host_ed25519_key Hatas\u0131 Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr (VPS)"},"content":{"rendered":"<p class=\"kb-dogrulama\">Son g\u00f6zden ge\u00e7irme: Eyl\u00fcl 2026 \u00b7 OpenSSH (Ubuntu 24.04 ve AlmaLinux 9) resm\u00ee dok\u00fcman\u0131na g\u00f6re<\/p>\n<div id=\"hizli-cozum\" class=\"ai-box ai-box--cozum\">\n<p class=\"ai-box-title\">H\u0131zl\u0131 \u00e7\u00f6z\u00fcm<\/p>\n<p><strong>Could not load host key ssh_host_ed25519_key<\/strong> hatas\u0131, sshd servisinin <code>sshd_config<\/code> i\u00e7inde tan\u0131ml\u0131 host anahtar dosyas\u0131n\u0131 bulamad\u0131\u011f\u0131 anlam\u0131na gelir; \u00e7\u00f6z\u00fcm eksik anahtarlar\u0131 yeniden \u00fcretip servisi yeniden ba\u015flatmakt\u0131r.<\/p>\n<ol>\n<li>Sunucuya root ya da <code>sudo<\/code> yetkili bir kullan\u0131c\u0131yla ba\u011flan\u0131n.<\/li>\n<li>Eksik t\u00fcm host anahtarlar\u0131n\u0131 tek komutla \u00fcretin: <code>ssh-keygen -A<\/code>.<\/li>\n<li>Yap\u0131land\u0131rmay\u0131 s\u00f6zdizimi hatas\u0131na kar\u015f\u0131 <code>sshd -t<\/code> ile denetleyin.<\/li>\n<li>sshd servisini yeniden ba\u015flat\u0131n: <code>systemctl restart sshd<\/code>.<\/li>\n<\/ol>\n<\/div>\n<table class=\"kb-uyg\">\n<tr>\n<th>Panel<\/th>\n<td>Yok (komut sat\u0131r\u0131, OpenSSH)<\/td>\n<\/tr>\n<tr>\n<th>Sistem<\/th>\n<td>VPS\/VDS \u00fczerinde Linux (Ubuntu, Debian, AlmaLinux)<\/td>\n<\/tr>\n<tr>\n<th>Yetki<\/th>\n<td><code>root<\/code> ya da <code>sudo<\/code> yetkili kullan\u0131c\u0131<\/td>\n<\/tr>\n<tr>\n<th>Narhost \u00fcr\u00fcn\u00fc<\/th>\n<td><a href=\"https:\/\/narhost.com\/vps-sunucu\" title=\"VPS Sunucu - Narhost\">VPS Sunucu<\/a><\/td>\n<\/tr>\n<\/table>\n<div class=\"kb-once\">\n<p class=\"label\">Ba\u015flamadan \u00f6nce<\/p>\n<ul>\n<li>Bu hata yaln\u0131zca kendi sunucunuzu y\u00f6netti\u011finiz VPS\/VDS ortamlar\u0131nda g\u00f6r\u00fcl\u00fcr; Narhost payla\u015f\u0131ml\u0131 hostingde SSH eri\u015fimi olmad\u0131\u011f\u0131 i\u00e7in kar\u015f\u0131n\u0131za \u00e7\u0131kmaz.<\/li>\n<li>SSH \u015fu an ba\u011flanm\u0131yorsa panelinizdeki taray\u0131c\u0131 konsolunu ya da KVM eri\u015fimini kullan\u0131n; eri\u015fim yollar\u0131n\u0131 <a href=\"https:\/\/narhost.com\/destek\/konsol-baglantisi-ile-sunucuya-nasil-erisilir\/\" title=\"Konsol ba\u011flant\u0131s\u0131 ile sunucuya nas\u0131l eri\u015filir - Narhost Destek\">konsol ba\u011flant\u0131s\u0131 ile sunucuya eri\u015fim<\/a> kart\u0131nda bulabilirsiniz.<\/li>\n<li><code>\/etc\/ssh\/sshd_config<\/code> dosyas\u0131nda elle de\u011fi\u015fiklik yapt\u0131ysan\u0131z, d\u00fczenlemeden \u00f6nce bir yedek kopya al\u0131n.<\/li>\n<\/ul>\n<\/div>\n<h2>Could Not Load Host Key ssh_host_ed25519_key Hatas\u0131 Neden Olur<\/h2>\n<p>sshd servisi her ba\u015flat\u0131ld\u0131\u011f\u0131nda <code>sshd_config<\/code> i\u00e7indeki <code>HostKey<\/code> sat\u0131rlar\u0131nda belirtilen \u00f6zel anahtar dosyalar\u0131n\u0131 okur. <code>error: Could not load host key: \/etc\/ssh\/ssh_host_ed25519_key<\/code> sat\u0131r\u0131, bu dosyan\u0131n diskte bulunmad\u0131\u011f\u0131n\u0131 ya da okunamad\u0131\u011f\u0131n\u0131 g\u00f6sterir. En s\u0131k neden, taze kurulan ya da imajdan klonlanan bir sunucuda anahtar dosyalar\u0131n\u0131n hi\u00e7 \u00fcretilmemi\u015f olmas\u0131d\u0131r; ayr\u0131ca yanl\u0131\u015f silme, hatal\u0131 dosya izinleri ya da <code>sshd_config<\/code> i\u00e7ine elle eklenen bir HostKey sat\u0131r\u0131n\u0131n kar\u015f\u0131l\u0131\u011f\u0131 bir dosya olmamas\u0131 da ayn\u0131 sat\u0131r\u0131 \u00fcretir.<\/p>\n<p>Bu bir uyar\u0131d\u0131r ve tek ba\u015f\u0131na genellikle servisi durdurmaz: sshd, y\u00fckleyebildi\u011fi di\u011fer anahtarlarla (\u00f6rne\u011fin RSA) \u00e7al\u0131\u015fmay\u0131 s\u00fcrd\u00fcrebilir. Ancak yaln\u0131zca ed25519 tan\u0131ml\u0131ysa ve o dosya yoksa servis hi\u00e7 ba\u015flamaz. Her iki durumda da do\u011fru \u00e7\u00f6z\u00fcm eksik anahtar dosyalar\u0131n\u0131 yeniden \u00fcretmektir.<\/p>\n<h2>Ad\u0131m Ad\u0131m Host Anahtar\u0131n\u0131 Yeniden \u00dcretme<\/h2>\n<h3>Eksik host anahtarlar\u0131n\u0131 \u00fcretin<\/h3>\n<ol class=\"kb-adimlar\">\n<li>Tek komutla, sistemde eksik olan t\u00fcm host anahtar t\u00fcrlerini (RSA, ECDSA, ed25519) \u00fcretin. <a href=\"https:\/\/man7.org\/linux\/man-pages\/man1\/ssh-keygen.1.html\" title=\"ssh-keygen(1) Linux man sayfas\u0131\" target=\"_blank\" rel=\"noopener\">ssh-keygen man sayfas\u0131na g\u00f6re<\/a><code>-A<\/code> se\u00e7ene\u011fi yaln\u0131zca mevcut olmayan anahtarlar\u0131 \u00fcretir, var olanlar\u0131 de\u011fi\u015ftirmez.\n<pre><code class=\"language-bash\">sudo ssh-keygen -A<\/code><\/pre>\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: <code>\/etc\/ssh\/<\/code> alt\u0131nda eksik olan <code>ssh_host_ed25519_key<\/code> ve varsa di\u011fer anahtar dosyalar\u0131 olu\u015fturulur.<\/p>\n<\/li>\n<li>Dosyalar\u0131n olu\u015ftu\u011funu ve izinlerinin do\u011fru oldu\u011funu do\u011frulay\u0131n. \u00d6zel anahtar dosyas\u0131 yaln\u0131zca root&#8217;a okunabilir (0600) olmal\u0131d\u0131r.\n<pre><code class=\"language-bash\">ls -l \/etc\/ssh\/ssh_host_*<\/code><\/pre>\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: <code>ssh_host_ed25519_key<\/code> i\u00e7in <code>-rw-------<\/code> ve <code>.pub<\/code> i\u00e7in <code>-rw-r--r--<\/code> izinlerini g\u00f6r\u00fcrs\u00fcn\u00fcz.<\/p>\n<\/li>\n<\/ol>\n<h3>Yap\u0131land\u0131rmay\u0131 do\u011frulay\u0131n<\/h3>\n<ol class=\"kb-adimlar\">\n<li>Yeniden ba\u015flatmadan \u00f6nce <a href=\"https:\/\/man7.org\/linux\/man-pages\/man8\/sshd.8.html\" title=\"sshd(8) Linux man sayfas\u0131\" target=\"_blank\" rel=\"noopener\">sshd man sayfas\u0131nda belgelenen<\/a><code>-t<\/code> test kipiyle yap\u0131land\u0131rmay\u0131 denetleyin; b\u00f6ylece k\u0131r\u0131k bir ayarla servisin ba\u015far\u0131s\u0131z olmas\u0131n\u0131 \u00f6nlersiniz.\n<pre><code class=\"language-bash\">sudo sshd -t\ngrep -i hostkey \/etc\/ssh\/sshd_config<\/code><\/pre>\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: <code>sshd -t<\/code> \u00e7\u0131kt\u0131 vermeden d\u00f6ner (hata yok) ve HostKey sat\u0131rlar\u0131 diskte var olan dosyalar\u0131 g\u00f6sterir.<\/p>\n<\/li>\n<\/ol>\n<h3>sshd servisini yeniden ba\u015flat\u0131n<\/h3>\n<ol class=\"kb-adimlar\">\n<li>Anahtarlar \u00fcretildikten ve yap\u0131land\u0131rma do\u011fruland\u0131ktan sonra servisi yeniden ba\u015flat\u0131n.\n<pre><code class=\"language-bash\">sudo systemctl restart sshd\nsudo systemctl status sshd<\/code><\/pre>\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: servis <code>active (running)<\/code> g\u00f6r\u00fcn\u00fcr ve g\u00fcnl\u00fckte art\u0131k host key uyar\u0131s\u0131 yer almaz.<\/p>\n<\/li>\n<\/ol>\n<figure class=\"nh-sema\"><img src=\"https:\/\/narhost.com\/destek\/wp-content\/uploads\/2026\/09\/could-not-load-host-key-etc-ssh-ssh-host-ed25519-key-hatasi-nasil-cozulur-sema-narhost.webp\" alt=\"Could not load host key ssh_host_ed25519_key hatas\u0131 \u00e7\u00f6z\u00fcm\u00fcnde anahtar \u00fcretme ve sshd yeniden ba\u015flatma ak\u0131\u015f\u0131\" width=\"1200\" height=\"500\" loading=\"lazy\" decoding=\"async\"><figcaption>Anahtarlar\u0131 \u00fcretin, izinleri ve yap\u0131land\u0131rmay\u0131 do\u011frulay\u0131n, sshd servisini yeniden ba\u015flat\u0131n.<\/figcaption><\/figure>\n<h2>Do\u011frulama<\/h2>\n<div class=\"success-box\">\n<p class=\"label\">Sonu\u00e7<\/p>\n<p>Servis durumu <code>active (running)<\/code> ise, <code>journalctl -u sshd<\/code> son sat\u0131rlar\u0131nda host key hatas\u0131 kalmad\u0131ysa ve ba\u015fka bir makineden ya da taray\u0131c\u0131 konsolundan SSH ba\u011flant\u0131s\u0131 kurulabiliyorsa sorun \u00e7\u00f6z\u00fclm\u00fc\u015ft\u00fcr. \u0130lk ba\u011flant\u0131da istemcinin yeni sunucu anahtar\u0131n\u0131 sormas\u0131 normaldir; anahtar yeniden \u00fcretildi\u011fi i\u00e7in bu beklenen bir davran\u0131\u015ft\u0131r.<\/p>\n<\/div>\n<h2>H\u00e2l\u00e2 \u00c7\u00f6z\u00fclmediyse<\/h2>\n<ul>\n<li><strong>Anahtar \u00fcretti ama servis yine ba\u015flam\u0131yor.<\/strong><code>sshd_config<\/code> i\u00e7inde var olmayan bir dosyaya i\u015faret eden fazladan bir HostKey sat\u0131r\u0131 olabilir; <code>sshd -t<\/code> \u00e7\u0131kt\u0131s\u0131ndaki dosya yolunu d\u00fczeltin ya da sat\u0131r\u0131 kald\u0131r\u0131n.<\/li>\n<li><strong>SSH portuna hi\u00e7 ula\u015fam\u0131yorsunuz.<\/strong> Servis \u00e7al\u0131\u015f\u0131yor olsa bile port kapal\u0131 olabilir; <a href=\"https:\/\/narhost.com\/destek\/ssh-portu-nasil-degistirilir\/\" title=\"SSH portu nas\u0131l de\u011fi\u015ftirilir - Narhost Destek\">SSH portu ayarlar\u0131n\u0131<\/a> ve g\u00fcvenlik duvar\u0131n\u0131 denetleyin.<\/li>\n<li><strong>Anahtar var ama ba\u011flan\u0131nca yetki reddediliyor.<\/strong> Bu farkl\u0131 bir konudur; <a href=\"https:\/\/narhost.com\/destek\/ssh-anahtari-nasil-eklenir\/\" title=\"SSH anahtar\u0131 nas\u0131l eklenir - Narhost Destek\">SSH anahtar\u0131 ekleme<\/a> kart\u0131ndaki ad\u0131mlarla oturum anahtar\u0131n\u0131z\u0131 do\u011frulay\u0131n.<\/li>\n<li><strong>Servis g\u00fcnl\u00fc\u011f\u00fcn\u00fc okuyam\u0131yorsunuz.<\/strong> Hata kayd\u0131n\u0131 incelemek i\u00e7in <a href=\"https:\/\/narhost.com\/destek\/linux-servisini-durdurma-ve-aktif-etme\/\" title=\"Linux servisini durdurma ve aktif etme - Narhost Destek\">servis durdurma ve ba\u015flatma<\/a> ile <a href=\"https:\/\/narhost.com\/destek\/linux-log-dosyalari-nasil-okunur\/\" title=\"Linux log dosyalar\u0131 nas\u0131l okunur - Narhost Destek\">log dosyalar\u0131n\u0131 okuma<\/a> kartlar\u0131na bak\u0131n.<\/li>\n<\/ul>\n<div class=\"cta-box\">\n<p class=\"label\">Narhost deste\u011fi<\/p>\n<p>VPS ve VDS sunucular\u0131m\u0131zda k\u00f6k eri\u015fimi sizde olur; sunucu i\u00e7indeki SSH yap\u0131land\u0131rmas\u0131 sizin sorumlulu\u011funuzdad\u0131r. A\u011f ya da eri\u015fim taraf\u0131nda bir engel oldu\u011funu d\u00fc\u015f\u00fcn\u00fcyorsan\u0131z destek talebinize sunucu IP&#8217;nizi, <code>sshd -t<\/code> \u00e7\u0131kt\u0131s\u0131n\u0131 ve tam hata sat\u0131r\u0131n\u0131 ekleyin.<\/p>\n<p><a class=\"cta-btn\" href=\"https:\/\/narhost.com\/submitticket.php\" title=\"Narhost destek talebi a\u00e7\">Destek talebi a\u00e7<\/a><\/div>\n<div class=\"kb-ilgili\">\n<p class=\"label\">Sonraki ad\u0131mlar<\/p>\n<ul>\n<li><a href=\"https:\/\/narhost.com\/destek\/site-bazen-acilmiyorsa-ne-yapilmali\/\" title=\"Site A\u00e7\u0131lm\u0131yor \u2014 Ad\u0131m Ad\u0131m Te\u015fhis Rehberi - Narhost Destek\">Site A\u00e7\u0131lm\u0131yor \u2014 Ad\u0131m Ad\u0131m Te\u015fhis Rehberi (konu merkezi)<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/vps-server\/\" title=\"VPS sunucu y\u00f6netimi destek kategorisi - Narhost\">Sunucu y\u00f6netimi destek kategorisi<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/sunucuya-ssh-ile-nasil-baglanilir\/\" title=\"Sunucuya SSH ile nas\u0131l ba\u011flan\u0131l\u0131r - Narhost Destek\">Sunucuya SSH ile ba\u011flanma<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/sunucu-root-sifresi-nasil-sifirlanir\/\" title=\"Sunucu root \u015fifresi nas\u0131l s\u0131f\u0131rlan\u0131r - Narhost Destek\">Sunucu root \u015fifresi s\u0131f\u0131rlama<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/linux-ssh-terminal-komutlari\/\" title=\"Linux SSH terminal komutlar\u0131 - Narhost Destek\">Linux SSH terminal komutlar\u0131<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/vps-vds-ilk-kurulum-rehberi\/\" title=\"VPS VDS ilk kurulum rehberi - Narhost Destek\">VPS\/VDS ilk kurulum rehberi<\/a><\/li>\n<\/ul>\n<\/div>\n<div class=\"kb-faq\">\n<h2>S\u0131k\u00e7a sorulan sorular<\/h2>\n<h3>ssh-keygen -A mevcut anahtarlar\u0131m\u0131 bozar m\u0131?<\/h3>\n<p>Hay\u0131r. <code>-A<\/code> se\u00e7ene\u011fi yaln\u0131zca diskte bulunmayan anahtar t\u00fcrlerini \u00fcretir; var olan dosyalara dokunmaz. Bu y\u00fczden \u00e7al\u0131\u015fan bir sistemde de g\u00fcvenle \u00e7al\u0131\u015ft\u0131rabilirsiniz. Yaln\u0131zca tamamen eksik olan <code>ssh_host_ed25519_key<\/code> gibi dosyalar olu\u015fturulur.<\/p>\n<h3>Anahtar yeniden \u00fcretilince istemciler neden uyar\u0131 veriyor?<\/h3>\n<p>Sunucunun kimlik anahtar\u0131 de\u011fi\u015fti\u011fi i\u00e7in, daha \u00f6nce ba\u011flanan istemcilerin <code>known_hosts<\/code> dosyas\u0131ndaki eski parmak izi art\u0131k uyu\u015fmaz. Bu beklenen bir durumdur; istemcide eski kayd\u0131 silip yeni anahtar\u0131 onaylad\u0131\u011f\u0131n\u0131zda ba\u011flant\u0131 normale d\u00f6ner.<\/p>\n<h3>Sadece sshd yeniden ba\u015flatmak yeterli mi?<\/h3>\n<p>Anahtar dosyas\u0131 ger\u00e7ekten eksikse hay\u0131r; \u00f6nce <code>ssh-keygen -A<\/code> ile dosyay\u0131 \u00fcretmeniz, sonra servisi yeniden ba\u015flatman\u0131z gerekir. Dosya varken servis yeniden ba\u015flatmak tek ba\u015f\u0131na hatay\u0131 gidermez.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>sshd g\u00fcnl\u00fc\u011f\u00fcndeki error: Could not load host key: \/etc\/ssh\/ssh_host_ed25519_key uyar\u0131s\u0131n\u0131n nedeni ve \u00e7\u00f6z\u00fcm\u00fc. Eksik host anahtarlar\u0131n\u0131 ssh-keygen -A ile \u00fcretme, sshd -t ile do\u011frulama ve servisi yeniden ba\u015flatma ad\u0131mlar\u0131 VPS i\u00e7in tek kartta.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[45,46,70,75],"class_list":["post-475","post","type-post","status-publish","format-standard","hentry","category-vps-server","tag-cozum","tag-hata","tag-ssh","tag-vps"],"meta_box":[],"_links":{"self":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts\/475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/comments?post=475"}],"version-history":[{"count":5,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts\/475\/revisions"}],"predecessor-version":[{"id":1513,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts\/475\/revisions\/1513"}],"wp:attachment":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/media?parent=475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/categories?post=475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/tags?post=475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}