{"id":118153,"date":"2024-07-23T21:43:10","date_gmt":"2024-07-23T19:43:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-dns-servera-bind-9-20-0-perevedyonnyj-na-libuv-i-novyj-bekend-dlya-bd"},"modified":"2024-07-23T21:43:10","modified_gmt":"2024-07-23T19:43:12","slug":"vypusk-dns-servera-bind-9-20-0-perevedyonnyj-na-libuv-i-novyj-bekend-dlya-bd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-dns-servera-bind-9-20-0-perevedyonnyj-na-libuv-i-novyj-bekend-dlya-bd","title":{"rendered":"Vyd\u00e1n\u00ed DNS serveru BIND 9.20.0, p\u0159eveden\u00e9ho na libuv a nov\u00fd backend pro datab\u00e1zi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po dvou a p\u016fl letech v\u00fdvoje p\u0159edstavil konsorcium ISC prvn\u00ed stabiln\u00ed vyd\u00e1n\u00ed nov\u00e9 v\u00fdznamn\u00e9 v\u011btve DNS serveru BIND 9.20, kter\u00e1 zahrnuje zm\u011bny vyv\u00edjej\u00edc\u00ed se v experiment\u00e1ln\u00ed v\u011btvi BIND 9.19. Podpora v\u011btve 9.20 bude zaji\u0161\u0165ov\u00e1na v r\u00e1mci roz\u0161\u00ed\u0159en\u00e9ho cyklu \u00fadr\u017eby a\u017e do prvn\u00edho \u010dtvrtlet\u00ed roku 2028. Podpora v\u011btve 9.18 skon\u010d\u00ed ve 2. \u010dtvrtlet\u00ed 2025. Pro v\u00fdvoj funkcionality dal\u0161\u00ed stabiln\u00ed verze BIND bude vytvo\u0159ena experiment\u00e1ln\u00ed v\u011btev BIND 9.21.0. K\u00f3d projektu je naps\u00e1n v jazyce C a je distribuov\u00e1n pod licenc\u00ed MPL 2.0.    <\/p>\n<p>Hlavn\u00ed zm\u011bny:  <\/p>\n<ul>\n<li class=\"l\"> J\u00e1dro aplikace, kter\u00e9 spojuje v\u0161echny komponenty, bylo p\u0159evedeno na pou\u017e\u00edv\u00e1n\u00ed cyklu zpracov\u00e1n\u00ed ud\u00e1lost\u00ed v neblokuj\u00edc\u00edm re\u017eimu, realizovan\u00e9m na z\u00e1klad\u011b knihovny libuv, pou\u017e\u00edvan\u00e9 v takov\u00fdch projektech jako Node.js, Knot DNS, H2O, Luvit a MoarVM. Ve v\u011btvi 9.16 byl na libuv p\u0159eveden spr\u00e1vce s\u00ed\u0165ov\u00fdch spojen\u00ed v BIND, a nyn\u00ed tak\u00e9 \u010d\u00e1sti, kter\u00e9 se pou\u017e\u00edvaj\u00ed pro interakci intern\u00edch komponent infrastruktury, jako\u017e i dlouho b\u011b\u017e\u00edc\u00ed pomocn\u00e9 zpracovatele (threadpool), kter\u00e9 se pou\u017e\u00edvaj\u00ed pro ov\u011b\u0159ov\u00e1n\u00ed DNSSEC, p\u0159evod z\u00f3n, udr\u017eov\u00e1n\u00ed katalogu z\u00f3n a zpracov\u00e1n\u00ed RPZ (Response Policy Zone). Pro sestaven\u00ed BIND je nyn\u00ed pot\u0159eba minim\u00e1ln\u011b verze libuv 1.34.0.\n<li class=\"l\"> Byl navr\u017een nov\u00fd backend pro pr\u00e1ci s datab\u00e1zemi \u2013 \u201eQP trie\u201c, kter\u00fd nahradil RBTDB (datab\u00e1zi \u010derveno-\u010dern\u00e9ho stromu) a je standardn\u011b pou\u017e\u00edv\u00e1n pro ukl\u00e1d\u00e1n\u00ed cache a datab\u00e1ze DNS z\u00f3n. Pro v\u00edcethreadovou pr\u00e1ci v QP trie byla vyu\u017eita knihovna liburcu s implementac\u00ed ve v\u00fdchoz\u00edm prostoru u\u017eivatele, kter\u00e1 nevyu\u017e\u00edv\u00e1 z\u00e1mky, d\u00edky pou\u017eit\u00ed mechanizmu synchronizace RCU (read-copy-update) a metody bezpe\u010dn\u00e9ho uvoln\u011bn\u00ed pam\u011bti QSBR (Quiescent-State-Based Reclamation).\n<li class=\"l\"> Byl implementov\u00e1n aktualizovan\u00fd mechanismus komprese <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/domain\/\"   title=\"dom\u00e9nov\u00fdch jmen\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"923\">dom\u00e9nov\u00fdch jmen<\/a>, kter\u00fd pou\u017e\u00edv\u00e1 kompaktn\u011bj\u0161\u00ed metodu k\u00f3dov\u00e1n\u00ed jmen s velk\u00fdm po\u010dtem \u0161t\u00edtk\u016f.\n<li class=\"l\"> Byly roz\u0161\u00ed\u0159eny mo\u017enosti DNSSEC: \u201ednssec-policy\u201c je povoleno pou\u017e\u00edvat pro spr\u00e1vu podepsan\u00fdch z\u00f3n (mo\u017enost auto-dnssec byla odstran\u011bna); p\u0159i pou\u017eit\u00ed \u201einline-signing\u201c byla p\u0159id\u00e1na podpora RFC 8901 (model DNSSEC multi-signer 2); byla obnovena podpora PKCS#11 zalo\u017een\u00e1 na OpenSSL 3.0.0 Engine API; do \u201ednssec-policy\u201c byla p\u0159id\u00e1na podpora HSM (modul hardwarov\u00e9 bezpe\u010dnosti).\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora druh\u00e9 verze katalogu z\u00f3n (Catalog Zone, RFC 9432), kter\u00e1 usnad\u0148uje \u00fadr\u017ebu sekund\u00e1rn\u00edch DNS server\u016f t\u00edm, \u017ee m\u00edsto definov\u00e1n\u00ed jednotliv\u00fdch z\u00e1znam\u016f pro ka\u017edou sekund\u00e1rn\u00ed z\u00f3nu na sekund\u00e1rn\u00edm serveru prob\u00edh\u00e1 p\u0159enos katalogu sekund\u00e1rn\u00edch z\u00f3n mezi prim\u00e1rn\u00edm a sekund\u00e1rn\u00edm serverem. Po nastaven\u00ed p\u0159enosu katalogu analogicky k p\u0159enosu jednotliv\u00fdch z\u00f3n se z\u00f3ny, kter\u00e9 byly na prim\u00e1rn\u00edm serveru ozna\u010deny jako sou\u010d\u00e1st katalogu, automaticky vytv\u00e1\u0159ej\u00ed na sekund\u00e1rn\u00edm serveru bez nutnosti \u00fapravy konfigura\u010dn\u00edch soubor\u016f.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora mechanismu roz\u0161\u00ed\u0159en\u00fdch chyb (Extended DNS Errors, RFC 8914), co\u017e umo\u017e\u0148uje vracet dodate\u010dn\u00e9 informace o p\u0159\u00ed\u010din\u011b chyby, kter\u00e1 nastala p\u0159i prov\u00e1d\u011bn\u00ed DNS dotazu.\n<li class=\"l\"> Implementace technologi\u00ed \u201eDNS p\u0159es HTTPS\u201c (DoH, DNS over HTTPS) a DNS p\u0159es TLS (DoT, DNS over TLS), kter\u00e9 se pou\u017e\u00edvaj\u00ed k \u0161ifrov\u00e1n\u00ed dotaz\u016f klient\u016f na resolver a \u0161ifrovan\u00e9 v\u00fdm\u011bn\u011b dat mezi servery, byla p\u0159evedena na pou\u017eit\u00ed jednotn\u00e9ho transportu.\n<li class=\"l\"> Byla p\u0159id\u00e1na mo\u017enost vyu\u017e\u00edvat protokol PROXYv2 se v\u0161emi transporty podporovan\u00fdmi v BIND. Protokol PROXY umo\u017e\u0148uje p\u0159en\u00e1\u0161et informace o spojen\u00ed, aby se uchoval \u00fadaj o p\u016fvodn\u00ed IP adrese a portu p\u0159i p\u0159esm\u011brov\u00e1n\u00ed DNS dotaz\u016f p\u0159es jin\u00e9 backendy, vyva\u017eova\u010de z\u00e1t\u011b\u017ee a proxy.<a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/\"   title=\"servery\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1964\">servery<\/a>.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora re\u017eimu USDT (User Statically Defined Tracing), kter\u00fd umo\u017e\u0148uje prov\u00e1d\u011bt sledov\u00e1n\u00ed aplikace pomoc\u00ed p\u0159\u00edkazu perf, ani\u017e by vznikaly dal\u0161\u00ed n\u00e1klady, kdy\u017e je sledov\u00e1n\u00ed vypnuto.\n<li class=\"l\"> Ve shroma\u017e\u010fovan\u00e9 statistice byla implementov\u00e1na informace o nedokon\u010den\u00fdch p\u0159\u00edchoz\u00edch operac\u00edch p\u0159enosu z\u00f3n.\n<li class=\"l\"> Byla provedena pr\u00e1ce na sn\u00ed\u017een\u00ed latenc\u00ed, sn\u00ed\u017een\u00ed spot\u0159eby pam\u011bti a sn\u00ed\u017een\u00ed z\u00e1t\u011b\u017ee CPU p\u0159i resolvov\u00e1n\u00ed, pr\u00e1ci s DNS-over-TLS a generov\u00e1n\u00ed odpov\u011bd\u00ed p\u0159es UDP a TCP.    <center><img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed DNS serveru BIND 9.20.0, p\u0159eveden\u00e9ho na libuv a nov\u00fd backend pro datab\u00e1zi\" src=\"\/wp-content\/uploads\/2024\/07\/c2706b5f31327d353ad2db07b61bc139.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <center><img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed DNS serveru BIND 9.20.0, p\u0159eveden\u00e9ho na libuv a nov\u00fd backend pro datab\u00e1zi\" src=\"\/wp-content\/uploads\/2024\/07\/965bbbee88109b939f4cae458b638754.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <center><img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed DNS serveru BIND 9.20.0, p\u0159eveden\u00e9ho na libuv a nov\u00fd backend pro datab\u00e1zi\" src=\"\/wp-content\/uploads\/2024\/07\/8246243649166a2ef545c89e603bf12c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61599\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u0441 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u043e\u0439 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c ISC \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 \u043d\u043e\u0432\u043e\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 BIND 9.20, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043e\u0431\u0440\u0430\u043b \u0432 \u0441\u0435\u0431\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0432\u0448\u0438\u0435\u0441\u044f \u0432 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0435 BIND 9.19. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0435\u0442\u043a\u0438 9.20 \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u043e\u0433\u043e \u0446\u0438\u043a\u043b\u0430 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0434\u043e \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u043a\u0432\u0430\u0440\u0442\u0430\u043b\u0430 2028 \u0433\u043e\u0434\u0430. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0435\u0442\u043a\u0438 9.18 \u043f\u0440\u0435\u043a\u0440\u0430\u0442\u0438\u0442\u0441\u044f \u0432\u043e 2 \u043a\u0432\u0430\u0440\u0442\u0430\u043b\u0435 2025 \u0433\u043e\u0434\u0430. \u0414\u043b\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":118154,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-118153","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u0441 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u043e\u0439 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