{"id":73029,"date":"2020-03-06T14:42:02","date_gmt":"2020-03-06T11:42:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/oshibka-v-bind-9-16-privodyashhaya-k-narusheniyu-obrabotki-tcp-soedinenij"},"modified":"2020-03-06T14:42:02","modified_gmt":"2020-03-06T11:42:02","slug":"oshibka-v-bind-9-16-privodyashhaya-k-narusheniyu-obrabotki-tcp-soedinenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/oshibka-v-bind-9-16-privodyashhaya-k-narusheniyu-obrabotki-tcp-soedinenij","title":{"rendered":"Fehler in BIND 9.16, der die Verarbeitung von TCP-Verbindungen beeintr\u00e4chtigt","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>In dem vor zwei Wochen ver\u00f6ffentlichten Branch <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52405\">BIND 9.16.0<\/a><\/noindex> wurde ein ernsthaftes <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/bind-announce@lists.isc.org\/msg00567.html\">Fehler<\/a><\/noindex>, das zur Ersch\u00f6pfung des Limits f\u00fcr die Anzahl der TCP-Verbindungen f\u00fchrt. In BIND 9.16 wurde ein neues Netzwerk-Subsystem vorgeschlagen, das auf einen Mechanismus zur asynchronen Verarbeitung von Anfragen auf Basis der Bibliothek <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/libuv\/libuv\">libuv<\/a><\/noindex>. Aufgrund eines Fehlers in diesem Subsystem wird der Z\u00e4hler f\u00fcr aktive TCP-Verbindungen unter bestimmten Bedingungen nicht verringert, was zu einer zunehmenden Diskrepanz zwischen seinem Wert und der tats\u00e4chlichen Anzahl der Verbindungen f\u00fchrt. Nach einiger Zeit kann der Wert des Z\u00e4hlers das festgelegte Limit f\u00fcr die Anzahl der Clientverbindungen erreichen, und neue TCP-Anfragen werden nicht mehr angenommen (UDP-Anfragen werden weiterhin verarbeitet). <\/p>\n<p>Das Problem tritt haupts\u00e4chlich auf Servern auf, die TCP-Verbindungen von Clients an mehreren Netzwerk-Interfaces gleichzeitig annehmen.<br \/>\nEin Update f\u00fcr BIND 9.16 wurde bisher nicht ver\u00f6ffentlicht, aber zur Behebung des Fehlers wurde <noindex><a rel=\"nofollow\" href=\"https:\/\/downloads.isc.org\/isc\/bind9\/9.16.0\/patches\">Patch<\/a><\/noindex>ver\u00f6ffentlicht. Als vor\u00fcbergehende L\u00f6sung kann das Limit f\u00fcr die Anzahl der Verbindungen (Option tcp-clients) auf einen sehr hohen Wert gesetzt werden. Neben BIND 9.16 betrifft das Problem auch den experimentellen Branch 9.15, beginnend mit der Version 9.15.6, aber dieser Branch wird urspr\u00fcnglich nur f\u00fcr die Entwicklung verwendet und ist nicht f\u00fcr den Einsatz auf Produktionsservern gedacht.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Quelle: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52490\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0434\u0432\u0435 \u043d\u0435\u0434\u0435\u043b\u0438 \u043d\u0430\u0437\u0430\u0434 \u0432\u0435\u0442\u043a\u0435 BIND 9.16.0 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u0430\u044f \u043e\u0448\u0438\u0431\u043a\u0430, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044e \u043b\u0438\u043c\u0438\u0442\u0430 \u043d\u0430 \u0447\u0438\u0441\u043b\u043e TCP-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439. \u0412 BIND 9.16 \u0431\u044b\u043b\u0430 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0441\u0435\u0442\u0435\u0432\u0430\u044f \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0451\u043d\u043d\u0430\u044f \u043d\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libuv. \u0418\u0437-\u0437\u0430 \u043e\u0448\u0438\u0431\u043a\u0438 \u0432 \u0434\u0430\u043d\u043d\u043e\u0439 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441\u0447\u0451\u0442\u0447\u0438\u043a \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0445 TCP-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u043f\u0440\u0438 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043d\u0435 \u0443\u043c\u0435\u043d\u044c\u0448\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043d\u0430\u0440\u0430\u0441\u0442\u0430\u044e\u0449\u0435\u043c\u0443 \u0440\u0430\u0441\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044e \u0435\u0433\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-73029","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0434\u0432\u0435 \u043d\u0435\u0434\u0435\u043b\u0438 \u043d\u0430\u0437\u0430\u0434 \u0432\u0435\u0442\u043a\u0435 BIND 9.16.0 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u0430\u044f\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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