{"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\/it\/blog\/novosti-interneta\/vypusk-dns-servera-bind-9-20-0-perevedyonnyj-na-libuv-i-novyj-bekend-dlya-bd","title":{"rendered":"Uscita del server DNS BIND 9.20.0, portato su libuv e nuovo backend per il database","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo due anni e mezzo di sviluppo, il consorzio ISC ha presentato il primo rilascio stabile della nuova e importante versione del server DNS BIND 9.20, che incorpora le modifiche sviluppate nella versione sperimentale BIND 9.19. Il supporto per la versione 9.20 sar\u00e0 fornito nell'ambito di un ciclo di assistenza esteso fino al primo trimestre del 2028. Il supporto per la versione 9.18 terminer\u00e0 nel secondo trimestre del 2025. Per sviluppare le funzionalit\u00e0 della prossima versione stabile di BIND, sar\u00e0 formata una versione sperimentale BIND 9.21.0. Il codice del progetto \u00e8 scritto in C ed \u00e8 distribuito sotto la licenza MPL 2.0.    <\/p>\n<p>Principali modifiche:  <\/p>\n<ul>\n<li class=\"l\"> Il nucleo dell'applicazione, che collega tutti i componenti, \u00e8 stato convertito per utilizzare un ciclo di elaborazione degli eventi in modalit\u00e0 non bloccante, implementato sulla base della libreria libuv, utilizzata in progetti come Node.js, Knot DNS, H2O, Luvit e MoarVM. Nella versione 9.16, il gestore delle connessioni di rete \u00e8 stato migrato su libuv in BIND, e ora anche parti utilizzate per l'interazione dei componenti interni dell'infrastruttura, cos\u00ec come gestori ausiliari (threadpool) che eseguono operazioni lunghe in thread separati, utilizzati per la verifica di DNSSEC, il trasferimento di zone, la manutenzione del catalogo delle zone e la gestione di RPZ (Response Policy Zone). Per compilare BIND ora \u00e8 richiesta almeno la versione 1.34.0 di libuv.\n<li class=\"l\"> \u00c8 stato proposto un nuovo backend per lavorare con i database \u2014 \u00abQP trie\u00bb, che sostituisce RBTDB (Red-Black Tree Database) e viene utilizzato di default per l'archiviazione della cache e del database delle zone DNS. Per supportare il lavoro multithread in QP trie, \u00e8 stata impiegata la libreria liburcu con l'implementazione in spazio utente di strutture che non utilizzano blocchi, grazie all'uso del meccanismo di sincronizzazione RCU (read-copy-update) e del metodo di rilascio sicuro della memoria QSBR (Quiescent-State-Based Reclamation).\n<li class=\"l\"> \u00c8 stato adottato un meccanismo di compressione aggiornato <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/domain\/\"   title=\"di nomi di dominio\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"923\">di nomi di dominio<\/a>, che utilizza un metodo di codifica dei nomi pi\u00f9 compatto con un numero maggiore di etichette.\n<li class=\"l\"> Ampliate le capacit\u00e0 di DNSSEC: \u00abdnssec-policy\u00bb \u00e8 consentito per la gestione delle zone firmate (opzione auto-dnssec rimossa); nell'utilizzo di \u00abinline-signing\u00bb \u00e8 stata aggiunta la supporto per RFC 8901 (modello multi-firmatario DNSSEC 2); ripristinato il supporto per PKCS#11 basato sull'OpenSSL 3.0.0 Engine API; nella \u00abdnssec-policy\u00bb \u00e8 stata aggiunta la supporto per HSM (Hardware Security Module).\n<li class=\"l\"> Aggiunta la supporto per la seconda versione del catalogo zone (Catalog Zone, RFC 9432), semplificando la gestione dei server DNS secondari poich\u00e9, invece di definire sul server secondario singoli record per ogni zona secondaria, viene organizzato il trasferimento del catalogo delle zone secondarie tra il server primario e quello secondario. Dopo aver configurato il trasferimento del catalogo in modo simile al trasferimento di zone singole, le zone create sul server primario, contrassegnate come appartenenti al catalogo, vengono automaticamente create sul server secondario senza necessit\u00e0 di modificare i file di configurazione.\n<li class=\"l\"> Aggiunta la supporto per il meccanismo di errori estesi (Extended DNS Errors, RFC 8914), che consente di restituire ulteriori informazioni sulla causa dell'errore verificatosi durante l'esecuzione di una richiesta DNS.\n<li class=\"l\"> L'implementazione delle tecnologie \u00abDNS over HTTPS\u00bb (DoH, DNS over HTTPS) e DNS over TLS (DoT, DNS over TLS), utilizzate per criptare le richieste dei clienti al resolver e lo scambio di dati criptati tra i server, \u00e8 stata convertita per utilizzare un trasporto unificato.\n<li class=\"l\"> Aggiunta la possibilit\u00e0 di utilizzare il protocollo PROXYv2 con tutti i trasporti supportati in BIND. Il protocollo PROXY consente di trasmettere informazioni sulla connessione per mantenere i dettagli riguardo l'indirizzo IP originale e il numero di porta durante il passaggio delle richieste DNS attraverso altri backend, bilanciatori di carico e proxy.<a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1964\">server<\/a>.\n<li class=\"l\"> Aggiunta la supporto per la modalit\u00e0 USDT (User Statically Defined Tracing), che consente di eseguire il tracciamento delle applicazioni utilizzando il comando perf, senza generare sovraccarichi aggiuntivi quando il tracciamento \u00e8 disattivato.\n<li class=\"l\"> Nelle statistiche raccolte \u00e8 stata implementata la visualizzazione delle informazioni sulle operazioni di trasferimento zone in sospeso.\n<li class=\"l\"> Sono stati effettuati lavori per ridurre le latenze, diminuire il consumo di memoria e abbattere il carico sulla CPU durante la risoluzione, l'operazione di DNS-over-TLS e la formazione delle risposte su UDP e TCP.    <center><img decoding=\"async\" alt=\"Uscita del server DNS BIND 9.20.0, portato su libuv e nuovo backend per il database\" src=\"\/wp-content\/uploads\/2024\/07\/c2706b5f31327d353ad2db07b61bc139.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <center><img decoding=\"async\" alt=\"Uscita del server DNS BIND 9.20.0, portato su libuv e nuovo backend per il database\" src=\"\/wp-content\/uploads\/2024\/07\/965bbbee88109b939f4cae458b638754.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <center><img decoding=\"async\" alt=\"Uscita del server DNS BIND 9.20.0, portato su libuv e nuovo backend per il database\" src=\"\/wp-content\/uploads\/2024\/07\/8246243649166a2ef545c89e603bf12c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/ul>\n<p>Fonte: <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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - 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 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 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