{"id":102637,"date":"2021-12-17T15:36:45","date_gmt":"2021-12-17T13:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2"},"modified":"2021-12-17T15:36:45","modified_gmt":"2021-12-17T13:36:45","slug":"vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2","title":{"rendered":"Wydanie systemu synchronizacji czasu Chrony 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Opublikowano wydanie projektu Chrony 4.2, oferuj\u0105cego niezale\u017cn\u0105 implementacj\u0119 klienta i serwera NTP, stosowan\u0105 do synchronizacji dok\u0142adnego czasu w r\u00f3\u017cnych dystrybucjach Linux, w tym w Fedora, Ubuntu, SUSE\/openSUSE i RHEL\/CentOS. Program wspiera specyfikacj\u0119 NTPv4 (RFC 5905) oraz protok\u00f3\u0142 NTS (Network Time Security), korzystaj\u0105cy z element\u00f3w infrastruktury kluczy publicznych (PKI) i umo\u017cliwiaj\u0105cy stosowanie TLS oraz uwierzytelnionego szyfrowania AEAD (Authenticated Encryption with Associated Data) w celu kryptograficznej ochrony synchronizacji czasu. Kod napisany jest w j\u0119zyku C i rozpowszechniany na licencji GPLv2.    <\/p>\n<p>Do uzyskiwania danych o dok\u0142adnym czasie mog\u0105 by\u0107 u\u017cywane zar\u00f3wno zewn\u0119trzne serwery NTP, jak i wzorcowe zegary, na przyk\u0142ad na bazie odbiornik\u00f3w GPS, przy kt\u00f3rych mo\u017ce by\u0107 osi\u0105gana dok\u0142adno\u015b\u0107 rz\u0119du u\u0142amk\u00f3w mikrosekund. Projekt zosta\u0142 pierwotnie zaprojektowany do prawid\u0142owego dzia\u0142ania w niestabilnych \u015brodowiskach, w tym w zawodnych sieciach z przerwami w po\u0142\u0105czeniach, du\u017cymi op\u00f3\u017anieniami i utrat\u0105 pakiet\u00f3w, funkcjonuj\u0105c w <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/vps\/abuzoustojchivye-vps\/\"   title=\"maszynach wirtualnych\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4260\">maszynach wirtualnych<\/a> i systemach ze zmieniaj\u0105cym si\u0119 re\u017cimem temperaturowym (na prac\u0119 zegar\u00f3w sprz\u0119towych wp\u0142ywa temperatura).    <\/p>\n<p>W nowym wydaniu:  <\/p>\n<ul>\n<li class=\"l\"> Dodano eksperymentalne wsparcie dla pola rozszerzaj\u0105cego mo\u017cliwo\u015bci protoko\u0142u NTPv4, wykorzystywanego do zwi\u0119kszenia stabilno\u015bci synchronizacji oraz redukcji op\u00f3\u017anie\u0144 i rozrzutu warto\u015bci.\n<li class=\"l\"> Dodano eksperymentalne wsparcie dla przesy\u0142ania NTP poprzez protok\u00f3\u0142 PTP (Precision Time Protocol).\n<li class=\"l\"> W implementacji NTS dodano wsparcie dla algorytmu szyfrowania AES-CMAC oraz mo\u017cliwo\u015b\u0107 korzystania z funkcji skr\u00f3tu z GnuTLS.\n<li class=\"l\"> Poprawiono dzia\u0142anie trybu prze\u0142\u0105czania <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/server\/\"   title=\"serwer\u00f3w\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1621\">serwer\u00f3w<\/a> w celu zwi\u0119kszenia niezawodno\u015bci. Do raportu serverstats dodano statystyki dotycz\u0105ce trybu prze\u0142\u0105czania.\n<li class=\"l\"> Udoskonalono wsparcie dla wielu klient\u00f3w za jednym translatorym adres\u00f3w (NAT).\n<li class=\"l\"> Zaktualizowano filtr wywo\u0142a\u0144 systemowych oparty na mechanizmie seccomp.\n<li class=\"l\"> Wsparcie dla systemu operacyjnego Solaris przet\u0142umaczone na korzystanie jako wz\u00f3r z projektu Illumos, kontynuuj\u0105cego rozw\u00f3j j\u0105dra, stosu sieciowego, system\u00f3w plik\u00f3w, sterownik\u00f3w, bibliotek i podstawowego zestawu narz\u0119dzi systemowych OpenSolaris. Dla Illumos wdro\u017cono wy\u0142\u0105czenie korygowania przez j\u0105dro systemowych zegar\u00f3w.  <\/ul>\n<p>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56363\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Chrony 4.2, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 NTP, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u0443\u044e \u0434\u043b\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u043e\u0447\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Linux, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0432 Fedora, Ubuntu, SUSE\/openSUSE \u0438 RHEL\/CentOS. \u041f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e NTPv4 (RFC 5905) \u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b NTS (Network Time Security), \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u044b \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0445 \u043a\u043b\u044e\u0447\u0435\u0439 (PKI) \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c TLS \u0438 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 [&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-102637","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=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a 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