{"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\/pt\/blog\/news\/vypusk-powerdns-authoritative-server-4-2","title":{"rendered":"Lan\u00e7amento do 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\/\">Aconteceu<\/a><\/noindex> lan\u00e7amento do servidor DNS autorit\u00e1rio  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/auth.html\">Servidor Autoritativo PowerDNS 4.2<\/a><\/noindex>, destinado \u00e0 organiza\u00e7\u00e3o da entrega de zonas DNS. Por <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/software.html\">dados<\/a><\/noindex> desenvolvedores do projeto, o PowerDNS Authoritative Server atende aproximadamente 30% do total de dom\u00ednios na Europa (se considerarmos apenas dom\u00ednios com assinaturas DNSSEC, esse n\u00famero sobe para 90%). O c\u00f3digo do projeto <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/PowerDNS\/pdns\">\u00e9 distribu\u00eddo<\/a><\/noindex> est\u00e1 sob a licen\u00e7a GPLv2.<\/p>\n<p>O PowerDNS Authoritative Server oferece a possibilidade de armazenar informa\u00e7\u00f5es sobre dom\u00ednios em diversos bancos de dados, incluindo MySQL, PostgreSQL, SQLite3, Oracle e Microsoft SQL Server, al\u00e9m de LDAP e arquivos de texto simples no formato BIND. A resposta pode ser adicionalmente filtrada (por exemplo, para eliminar spam) ou redirecionada por meio da conex\u00e3o de manipuladores personalizados nas linguagens Lua, Java, Perl, Python, Ruby, C e C++. Dentre as caracter\u00edsticas, destaca-se ainda a coleta remota de estat\u00edsticas, incluindo por SNMP ou atrav\u00e9s da Web API (para estat\u00edsticas e gerenciamento, um servidor http embutido), rein\u00edcio instant\u00e2neo, um mecanismo interno para conex\u00e3o de manipuladores na linguagem Lua, e a possibilidade de balanceamento de carga considerando a localiza\u00e7\u00e3o geogr\u00e1fica do cliente.<\/p>\n<p>Principais <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/changelog\/4.2.html\">novidades<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Adicionada a possibilidade <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/lua-records\/index.html\">defini\u00e7\u00f5es<\/a><\/noindex> registros com manipuladores na linguagem Lua, com os quais \u00e9 poss\u00edvel criar manipuladores sofisticados que levam em conta ao devolver dados AS, sub-redes, proximidade ao usu\u00e1rio, etc. O suporte a registros Lua \u00e9 implementado para todos os backends de armazenamento, incluindo BIND e LMDB. Por exemplo, para retornar dados considerando a verifica\u00e7\u00e3o de disponibilidade de hosts em segundo plano na configura\u00e7\u00e3o da zona, agora \u00e9 poss\u00edvel especificar:\n<p>   @ IN LUA A<\/p>\n<li class=\"l\"> Adicionado um novo utilit\u00e1rio <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/manpages\/ixfrdist.1.html\">ixfrdist<\/a><\/noindex>, permitindo transferir zonas de um servidor autoritativo utilizando solicita\u00e7\u00f5es AXFR e IXFR, considerando a atualidade dos dados transmitidos (para cada dom\u00ednio, \u00e9 realizada a verifica\u00e7\u00e3o do n\u00famero SOA e apenas novas vers\u00f5es da zona s\u00e3o carregadas). O utilit\u00e1rio permite organizar a sincroniza\u00e7\u00e3o de zonas em um n\u00famero muito grande de servidores secund\u00e1rios e recursivos sem criar uma grande carga no servidor prim\u00e1rio;\n<li class=\"l\"> No \u00e2mbito da prepara\u00e7\u00e3o para a iniciativa <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51102\">Dia da Flag DNS 2020<\/a><\/noindex>  o valor do par\u00e2metro udp-truncation-threshold foi reduzido de 1680 para 1232, respons\u00e1vel por truncar respostas UDP para o cliente, o que deve reduzir significativamente a probabilidade de perda de pacotes UDP. O valor 1232 foi escolhido, pois \u00e9 o m\u00e1ximo em que o tamanho da resposta DNS considerando IPv6 se encaixa no valor m\u00ednimo do MTU (1280);\n<li class=\"l\"> Adicionado um novo backend de armazenamento baseado em banco de dados <noindex><a rel=\"nofollow\" href=\"https:\/\/symas.com\/lmdb\/\">LMDB<\/a><\/noindex>. O backend \u00e9 totalmente compat\u00edvel com DNSSEC, pode ser usado para zonas master e slave, e proporciona um desempenho superior ao de muitos outros backends. Imediatamente antes do lan\u00e7amento, foi adicionado um patch ao c\u00f3digo que quebrou a funcionalidade do backend LMDB (a manipula\u00e7\u00e3o de zonas slave e o carregamento atrav\u00e9s do pdnsutil ainda funcionam, mas comandos como  pararam de funcionar). Espera-se resolver esses problemas na pr\u00f3xima atualiza\u00e7\u00e3o.\n<li class=\"l\"> O suporte \u00e0 fun\u00e7\u00e3o pouco documentada  foi descontinuado, pois estava dificultando a resolu\u00e7\u00e3o de alguns problemas. De acordo com os requisitos <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc8624\">RFC 8624<\/a><\/noindex> (GOST R 34.11-2012 foi movido para a categoria ) O suporte para hashes GOST DS e assinaturas digitais ECC-GOST foi interrompido no DNSSEC.\n<\/ul>\n<p>Lembramos que o PowerDNS passou a ter um ciclo de desenvolvimento de seis meses, de acordo com o qual o pr\u00f3ximo lan\u00e7amento significativo do PowerDNS Authoritative Server est\u00e1 previsto para fevereiro de 2020. As atualiza\u00e7\u00f5es para lan\u00e7amentos significativos ser\u00e3o feitas ao longo do ano, seguido por mais seis meses durante os quais corre\u00e7\u00f5es de vulnerabilidades ser\u00e3o lan\u00e7adas. Assim, o suporte para a vers\u00e3o PowerDNS Authoritative Server 4.2 se estender\u00e1 at\u00e9 janeiro de 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 5.0.3 - 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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