{"id":125518,"date":"2025-05-23T15:05:07","date_gmt":"2025-05-23T13:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd"},"modified":"2025-05-23T15:05:07","modified_gmt":"2025-05-23T13:05:07","slug":"ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","title":{"rendered":"Ubuntu 25.10 p\u0159ech\u00e1z\u00ed na Chrony jako v\u00fdchoz\u00ed m\u00edsto systemd-timesyncd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1\u0159i Ubuntu Linux pl\u00e1nuj\u00ed p\u0159echod na v\u00fdchoz\u00ed pou\u017e\u00edv\u00e1n\u00ed projektu Chrony pro synchronizaci p\u0159esn\u00e9ho \u010dasu ve v\u0161ech verz\u00edch Ubuntu 25.10. D\u0159\u00edve byl v Ubuntu pou\u017e\u00edv\u00e1n slu\u017eba systemd-timesyncd, kter\u00e1 m\u00e1 b\u00fdt nahrazena z d\u016fvodu p\u0159\u00e1n\u00ed vyu\u017e\u00edt protokol NTS (Network Time Security) pro kryptografickou ochranu synchronizace \u010dasu. <\/p>\n

Projekt Chrony poskytuje nez\u00e1vislou implementaci klienta a serveru NTP, kter\u00e1 se ji\u017e pou\u017e\u00edv\u00e1 k synchronizaci p\u0159esn\u00e9ho \u010dasu ve Fedora, SUSE\/openSUSE a RHEL. NTS zaji\u0161\u0165uje, \u017ee klient komunikuje s c\u00edlov\u00fdm, nikoli podvr\u017een\u00fdm NTP serverem. Podvr\u017een\u00ed NTP serveru p\u0159edstavuje riziko, proto\u017ee nastaven\u00ed nespr\u00e1vn\u00e9ho \u010dasu m\u016f\u017ee b\u00fdt pou\u017eito k naru\u0161en\u00ed bezpe\u010dnosti jin\u00fdch \u010dasov\u011b z\u00e1visl\u00fdch protokol\u016f, jako jsou TLS a DNSSEC. Zm\u011bna \u010dasu m\u016f\u017ee v\u00e9st k nespr\u00e1vn\u00e9 interpretaci \u00fadaj\u016f o platnosti certifik\u00e1t\u016f. <\/p>\n

Protokol NTS pou\u017e\u00edv\u00e1 prvky infrastruktury ve\u0159ejn\u00fdch kl\u00ed\u010d\u016f (PKI) k organizaci \u0161ifrovan\u00e9ho komunika\u010dn\u00edho kan\u00e1lu a umo\u017e\u0148uje aplikaci TLS a autentizovan\u00e9ho \u0161ifrov\u00e1n\u00ed AEAD (Authenticated Encryption with Associated Data) k ochran\u011b u\u017eivatel\u016f p\u0159ed \u00fatoky simuluj\u00edc\u00edmi NTP server. NTS obsahuje dva samostatn\u00e9 protokoly: NTS-KE (NTS Key Establishment), kter\u00fd se pou\u017e\u00edv\u00e1 k prov\u00e1d\u011bn\u00ed po\u010d\u00e1te\u010dn\u00ed autentifikace a dohod\u011b o kl\u00ed\u010d\u00edch nad TLS, a NTS-EF (NTS Extension Fields), kter\u00fd zaji\u0161\u0165uje \u0161ifrov\u00e1n\u00ed a autentizaci relace synchronizace \u010dasu. NTS p\u0159id\u00e1v\u00e1 do paket\u016f NTP n\u011bkolik roz\u0161\u00ed\u0159en\u00fdch pol\u00ed a uchov\u00e1v\u00e1 v\u0161echny informace o stavu pouze na stran\u011b klienta, p\u0159i\u010dem\u017e vyu\u017e\u00edv\u00e1 mechanismus p\u0159enosu cookie. Pro zpracov\u00e1n\u00ed spojen\u00ed p\u0159es protokol NTS se pou\u017e\u00edv\u00e1 s\u00ed\u0165ov\u00fd port 4460. <\/p>\n

Bal\u00ed\u010dek Chrony je ji\u017e zahrnut v repozit\u00e1\u0159i main a v\u00fdchoz\u00ed je v n\u011bkter\u00fdch vyd\u00e1n\u00edch Ubuntu pro cloudov\u00e9 syst\u00e9my. Pr\u00e1ce na nahrazen\u00ed systemd-timesyncd bal\u00ed\u010dkem Chrony za\u010dne 2. \u010dervna. Za\u010dlen\u011bn\u00ed Chrony do sestaven\u00ed p\u0159inese dodate\u010dnou z\u00e1vislost «libedit2» a zv\u00fd\u0161\u00ed velikost obrazu o 803 KB. Pro nahrazen\u00ed systemd-timesyncd bal\u00ed\u010dkem Chrony v Ubuntu 25.04 lze pou\u017e\u00edt p\u0159\u00edkaz «apt-mark auto systemd-timesyncd && apt install chrony», a pro n\u00e1vrat k systemd-timesyncd — «apt-mark auto chrony && apt install systemd-timesyncd».
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Ubuntu Linux \u043d\u0430\u043c\u0435\u0442\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Chrony \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\u043e \u0432\u0441\u0435\u0445 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 Ubuntu 25.10. \u0420\u0430\u043d\u0435\u0435 \u0432 Ubuntu \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043b\u0441\u044f \u0441\u0435\u0440\u0432\u0438\u0441 systemd-timesyncd, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0440\u0435\u0448\u0435\u043d\u043e \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c \u0438\u0437-\u0437\u0430 \u0436\u0435\u043b\u0430\u043d\u0438\u044f \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b NTS (Network Time Security) \u0434\u043b\u044f \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u0440\u0435\u043c\u0435\u043d\u0438. \u041f\u0440\u043e\u0435\u043a\u0442 Chrony \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \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, \u0443\u0436\u0435 \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 […]<\/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-125518","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Ubuntu 25.10 p\u0159ech\u00e1z\u00ed na Chrony m\u00edsto systemd-timesyncd jako v\u00fdchoz\u00ed | ProHoster","description":"V\u00fdvoj\u00e1\u0159i Ubuntu Linux pl\u00e1nuj\u00ed p\u0159echod na v\u00fdchoz\u00ed pou\u017e\u00edv\u00e1n\u00ed projektu Chrony pro synchronizaci p\u0159esn\u00e9ho \u010dasu ve v\u0161ech verz\u00edch Ubuntu 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