{"id":37691,"date":"2019-10-31T22:19:07","date_gmt":"2019-10-31T19:19:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-powerdns-authoritative-server-4-2\/"},"modified":"2019-10-31T22:19:07","modified_gmt":"2019-10-31T19:19:07","slug":"vypusk-powerdns-authoritative-server-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-powerdns-authoritative-server-4-2","title":{"rendered":"Rilascio di PowerDNS Authoritative Server 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/blog.powerdns.com\/2019\/08\/30\/powerdns-authoritative-server-4-2-0\/\">Si \u00e8 tenuto<\/a><\/noindex> rilascio di un server DNS autoritativo  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/auth.html\">PowerDNS Authoritative Server 4.2<\/a><\/noindex>, destinato all'organizzazione della fornitura delle zone DNS. Per <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/software.html\">dati<\/a><\/noindex> gli sviluppatori del progetto, il PowerDNS Authoritative Server gestisce circa il 30% del numero totale di domini in Europa (considerando solo i domini con firme DNSSEC, il 90%). Il codice del progetto <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/PowerDNS\/pdns\">\u00e8 distribuito<\/a><\/noindex> \u00e8 sotto licenza GPLv2.<\/p>\n<p>PowerDNS Authoritative Server offre la possibilit\u00e0 di memorizzare informazioni sui domini in vari database, tra cui MySQL, PostgreSQL, SQLite3, Oracle e Microsoft SQL Server, nonch\u00e9 in LDAP e file di testo semplici in formato BIND. La risposta pu\u00f2 essere ulteriormente filtrata (ad esempio, per escludere lo spam) o reindirizzata tramite l'integrazione di propri gestori in linguaggi come Lua, Java, Perl, Python, Ruby, C e C++. Tra le caratteristiche sono inclusi strumenti per la raccolta remota delle statistiche, anche tramite SNMP o Web API (per statistiche e gestione \u00e8 integrato un server http), riavvio istantaneo, motore integrato per collegare gestori in linguaggio Lua, e la possibilit\u00e0 di bilanciamento del carico tenendo conto della posizione geografica del cliente.<\/p>\n<p>Principali <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/changelog\/4.2.html\">novit\u00e0<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> \u00c8 stata aggiunta la possibilit\u00e0 <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/lua-records\/index.html\">definizioni<\/a><\/noindex> dei record con gestori in linguaggio Lua, grazie ai quali \u00e8 possibile creare gestori sofisticati che considerano la AS, le subnet, la vicinanza all'utente e cos\u00ec via. Il supporto per i record Lua \u00e8 stato implementato per tutti i backend di archiviazione, compresi BIND e LMDB. Ad esempio, per fornire dati tenendo conto del controllo di disponibilit\u00e0 dei host in background nella configurazione della zona, ora \u00e8 possibile specificare:\n<p>   @ IN LUA A<\/p>\n<li class=\"l\"> \u00c8 stata aggiunta una nuova utility <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/manpages\/ixfrdist.1.html\">ixfrdist<\/a><\/noindex>, che consente di trasferire zone da un server autoritativo tramite richieste AXFR e IXFR, tenendo conto della rilevanza dei dati trasferiti (per ciascun dominio viene eseguita una verifica del numero SOA e vengono caricate solo le nuove versioni della zona). L'utility consente di organizzare la sincronizzazione delle zone su un numero molto elevato di server secondari e ricorsivi senza creare un grande carico sul server primario;\n<li class=\"l\"> Nel contesto della preparazione all'iniziativa <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51102\">DNS flag day 2020<\/a><\/noindex>  il valore del parametro udp-truncation-threshold \u00e8 stato ridotto da 1680 a 1232, responsabile della troncatura delle risposte UDP al cliente, il che dovrebbe ridurre significativamente la probabilit\u00e0 di perdita di pacchetti UDP. Il valore 1232 \u00e8 stato scelto perch\u00e9 rappresenta il massimo in cui la dimensione della risposta DNS, considerando l'IPv6, rientra nel valore minimo di MTU (1280);\n<li class=\"l\"> \u00c8 stato aggiunto un nuovo backend di archiviazione basato su un database <noindex><a rel=\"nofollow\" href=\"https:\/\/symas.com\/lmdb\/\">LMDB<\/a><\/noindex>. Il backend \u00e8 completamente compatibile con DNSSEC, pu\u00f2 essere utilizzato per zone master e slave e offre prestazioni superiori rispetto alla maggior parte degli altri backend. Poco prima del rilascio, \u00e8 stata aggiunta una modifica nel codice che ha interrotto il funzionamento del backend LMDB (funzionano l'elaborazione delle zone slave e il caricamento tramite pdnsutil, ma comandi come  non funzionano pi\u00f9. Si prevede di risolvere i problemi nel prossimo rilascio correttivo;\n<li class=\"l\"> \u00c8 stata interrotta la supporto per la funzione poco documentata , che ostacolava la risoluzione di alcuni problemi. In conformit\u00e0 ai requisiti <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc8624\">RFC 8624<\/a><\/noindex> (GOST R 34.11-2012 spostato nella categoria ) sono terminate le supporto per gli hash GOST DS e le firme digitali ECC-GOST in DNSSEC.\n<\/ul>\n<p>Ricordiamo che PowerDNS \u00e8 passato a un ciclo di sviluppo di sei mesi, secondo il quale la prossima versione significativa di PowerDNS Authoritative Server \u00e8 attesa per febbraio 2020. Gli aggiornamenti per le versioni significative saranno generati durante l'anno, dopo di che saranno rilasciate correzioni di vulnerabilit\u00e0 per altri sei mesi. Pertanto, il supporto per il ramo PowerDNS Authoritative Server 4.2 durer\u00e0 fino a gennaio 2021. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51400\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u0430\u0432\u0442\u043e\u0440\u0438\u0442\u0435\u0442\u043d\u043e\u0433\u043e (authoritative) DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 PowerDNS Authoritative Server 4.2, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u043e\u0442\u0434\u0430\u0447\u0438 DNS-\u0437\u043e\u043d. \u041f\u043e \u0434\u0430\u043d\u043d\u044b\u043c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0430, PowerDNS Authoritative Server \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e 30% \u0438\u0437 \u043e\u0431\u0449\u0435\u0433\u043e \u0447\u0438\u0441\u043b\u0430 \u0434\u043e\u043c\u0435\u043d\u043e\u0432 \u0432 \u0415\u0432\u0440\u043e\u043f\u0435 (\u0435\u0441\u043b\u0438 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043e\u043c\u0435\u043d\u044b \u0441 \u043f\u043e\u0434\u043f\u0438\u0441\u044f\u043c\u0438 DNSSEC, \u0442\u043e 90%). \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. PowerDNS Authoritative Server \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e \u0434\u043e\u043c\u0435\u043d\u0430\u0445 \u0432 [&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-37691","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=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 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