{"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\/fr\/blog\/news\/vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2","title":{"rendered":"Publication du syst\u00e8me de synchronisation de temps pr\u00e9cis Chrony 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>La version 4.2 du projet Chrony a \u00e9t\u00e9 publi\u00e9e, fournissant une mise en \u0153uvre ind\u00e9pendante du client et du serveur NTP, utilis\u00e9e pour synchroniser l'heure pr\u00e9cise dans diverses distributions Linux, y compris Fedora, Ubuntu, SUSE\/openSUSE et RHEL\/CentOS. Le programme prend en charge la sp\u00e9cification NTPv4 (RFC 5905) et le protocole NTS (Network Time Security), qui utilise des \u00e9l\u00e9ments d'infrastructure \u00e0 cl\u00e9s publiques (PKI) et permet l'application de TLS et de chiffrement authentifi\u00e9 AEAD (Authenticated Encryption with Associated Data) pour la protection cryptographique de la synchronisation horaire. Le code est \u00e9crit en C et distribu\u00e9 sous licence GPLv2.    <\/p>\n<p>Les donn\u00e9es de temps exact peuvent \u00eatre obtenues \u00e0 partir de serveurs NTP externes ou d'horloges de r\u00e9f\u00e9rence, par exemple bas\u00e9es sur des r\u00e9cepteurs GPS, permettant d'atteindre une pr\u00e9cision \u00e0 la fraction de microseconde. Le projet a \u00e9t\u00e9 con\u00e7u d\u00e8s le d\u00e9part pour fonctionner correctement dans des environnements instables, y compris des r\u00e9seaux peu fiables avec des d\u00e9connexions, de grandes latences et des pertes de paquets, ainsi que dans <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/vps\/abuzoustojchivye-vps\/\"   title=\"des machines virtuelles\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4260\">des machines virtuelles<\/a> des syst\u00e8mes avec des r\u00e9gimes de temp\u00e9rature variables (la temp\u00e9rature influence le fonctionnement des horloges mat\u00e9rielles).    <\/p>\n<p>Dans cette nouvelle version :  <\/p>\n<ul>\n<li class=\"l\"> Un support exp\u00e9rimental pour un champ \u00e9largissant les capacit\u00e9s du protocole NTPv4 a \u00e9t\u00e9 ajout\u00e9, utilis\u00e9 pour am\u00e9liorer la stabilit\u00e9 de la synchronisation, ainsi que pour r\u00e9duire les latences et la dispersion des valeurs.\n<li class=\"l\"> Une prise en charge exp\u00e9rimentale du transport de NTP sur le protocole PTP (Precision Time Protocol) a \u00e9t\u00e9 ajout\u00e9e.\n<li class=\"l\"> Le support de l'algorithme de chiffrement AES-CMAC a \u00e9t\u00e9 ajout\u00e9 \u00e0 l'impl\u00e9mentation NTS, ainsi que la possibilit\u00e9 d'utiliser des fonctions de hachage de GnuTLS.\n<li class=\"l\"> Le fonctionnement du mode de basculement a \u00e9t\u00e9 am\u00e9lior\u00e9 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/server\/\"   title=\"serveurs\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1621\">serveurs<\/a> pour am\u00e9liorer la fiabilit\u00e9. Des statistiques sur le mode de basculement ont \u00e9t\u00e9 ajout\u00e9es au rapport serverstats.\n<li class=\"l\"> Le support de plusieurs clients derri\u00e8re un traducteur d'adresses (NAT) a \u00e9t\u00e9 am\u00e9lior\u00e9.\n<li class=\"l\"> Le filtre d'appels syst\u00e8me bas\u00e9 sur le m\u00e9canisme seccomp a \u00e9t\u00e9 mis \u00e0 jour.\n<li class=\"l\"> Le support du syst\u00e8me d'exploitation Solaris a \u00e9t\u00e9 transf\u00e9r\u00e9 pour utiliser le projet Illumos comme r\u00e9f\u00e9rence, continuant le d\u00e9veloppement du noyau, de la pile r\u00e9seau, des syst\u00e8mes de fichiers, des pilotes, des biblioth\u00e8ques et du noyau d'outils syst\u00e8me d'OpenSolaris. Pour Illumos, l'ajustement des horloges syst\u00e8me par le noyau a \u00e9t\u00e9 d\u00e9sactiv\u00e9.  <\/ul>\n<p>Source : <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 5.0.2 - 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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