{"id":15937,"date":"2025-12-09T15:24:23","date_gmt":"2025-12-09T14:24:23","guid":{"rendered":"https:\/\/webhosting.de\/wie-time-drift-ntp-chrony-hosting-zeitsynchronisation-praktica\/"},"modified":"2025-12-09T15:24:23","modified_gmt":"2025-12-09T14:24:23","slug":"%e3%82%bf%e3%82%a4%e3%83%a0%e3%83%89%e3%83%aa%e3%83%95%e3%83%88-ntp-%e3%82%af%e3%83%ad%e3%83%8b%e3%83%bc-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e6%99%82%e5%88%bb%e5%90%8c%e6%9c%9f","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/wie-time-drift-ntp-chrony-hosting-zeitsynchronisation-praktica\/","title":{"rendered":"\u30bf\u30a4\u30e0\u30c9\u30ea\u30d5\u30c8\u304c\u30b5\u30fc\u30d0\u30fc\u306e\u901f\u5ea6\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u539f\u56e0 \u2013 NTP\u3001Chrony\u3001\u304a\u3088\u3073\u6642\u523b\u540c\u671f"},"content":{"rendered":"<p><strong>\u30a8\u30cc\u30c6\u30a3\u30fc\u30d4\u30fc<\/strong> Chrony Hosting \u306f\u3001\u6642\u8a08\u3092\u8fc5\u901f\u306b\u8abf\u6574\u3057\u3001\u30ed\u30b0\u306e\u6642\u9593\u3092\u6574\u7406\u3057\u3001\u8a8d\u8a3c\u306e\u4fe1\u983c\u6027\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u3067\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u901f\u5ea6\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u30bf\u30a4\u30e0\u30c9\u30ea\u30d5\u30c8\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u305d\u306e\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002 <strong>\u30af\u30ed\u30cb\u30fc<\/strong>, \u3001NTP \u3068 systemd-timesyncd \u306e\u9023\u643a\u3001\u30c9\u30ea\u30d5\u30c8\u304c\u767a\u751f\u3059\u308b\u7406\u7531\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u3067\u969c\u5bb3\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306e\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u3054\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n\n<ul>\n  <li><strong>\u30bf\u30a4\u30e0\u30c9\u30ea\u30d5\u30c8<\/strong>\uff1a\u539f\u56e0\u3001\u7d50\u679c\u3001\u305d\u3057\u3066\u30df\u30ea\u79d2\u304c\u91cd\u8981\u306a\u7406\u7531<\/li>\n  <li><strong>NTP\u968e\u5c64<\/strong>: \u5185\u90e8\u6642\u523b\u30bd\u30fc\u30b9\u306e\u305f\u3081\u306e\u30b9\u30c8\u30e9\u30bf\u30e0\u8a2d\u8a08<\/li>\n  <li><strong>\u30af\u30ed\u30cb\u30fc<\/strong> \u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u306b\u304a\u3051\u308b vs. ntpd vs. systemd-timesyncd<\/li>\n  <li><strong>NTS<\/strong> &amp; \u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\uff1a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u6b63\u78ba\u6027<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> &amp; \u6301\u7d9a\u7684\u306a\u4e00\u8cab\u6027\u306e\u305f\u3081\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/li>\n<\/ul>\n\n<h2>\u30b5\u30fc\u30d0\u30fc\u30bf\u30a4\u30e0\u30c9\u30ea\u30d5\u30c8\u306e\u767a\u751f\u3068\u5f71\u97ff<\/h2>\n\n<p>\u30bf\u30a4\u30e0\u30c9\u30ea\u30d5\u30c8\u306f\u3001 <strong>RTC<\/strong> \u30db\u30b9\u30c8\u306e\u52d5\u4f5c\u304c\u308f\u305a\u304b\u306b\u901f\u3059\u304e\u308b\u3001\u307e\u305f\u306f\u9045\u3059\u304e\u308b\u5834\u5408\u3001\u305d\u306e\u8aa4\u5dee\u306f\u65e5\u3005\u84c4\u7a4d\u3055\u308c\u307e\u3059\u3002\u308f\u305a\u304b\u306a\u8aa4\u5dee\u3067\u3082\u77db\u76fe\u304c\u751f\u3058\u308b\u306e\u3067\u3059\u3002 <strong>\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7<\/strong>, \u3053\u308c\u306b\u3088\u308a\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u652f\u969c\u304c\u751f\u3058\u307e\u3059\u3002\u8a3c\u660e\u66f8\u304c\u7a81\u7136\u300c\u65e9\u3059\u304e\u308b\u300d\u307e\u305f\u306f\u300c\u9045\u3059\u304e\u308b\u300d\u3068\u8868\u793a\u3055\u308c\u3001\u8a8d\u8a3c\u304c\u5931\u6557\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30a4\u30d9\u30f3\u30c8\u306e\u9806\u5e8f\u304c\u5931\u308f\u308c\u3001\u30c7\u30d0\u30c3\u30b0\u304c\u56f0\u96e3\u306b\u306a\u308b\u304b\u3001\u4e0d\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u3067\u306f\u3001\u540c\u671f\u306e\u6b20\u5982\u304c\u969c\u5bb3\u306e\u539f\u56e0\u3068\u306a\u308b\u3053\u3068\u3092\u3088\u304f\u76ee\u306b\u3057\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u5805\u7262\u306a\u6642\u9593\u8a2d\u8a08\u306b\u3088\u3063\u3066\u56de\u907f\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/zeitdrift-serverproblem-2861.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>NTP\u30b9\u30c8\u30e9\u30bf\u30e0\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8aac\u660e<\/h2>\n\n<p>\u4edd <strong>Stratum<\/strong>-\u30e2\u30c7\u30eb\u306f\u3001\u6642\u9593\u30bd\u30fc\u30b9\u3092\u968e\u5c64\u7684\u306b\u6574\u7406\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u4f9d\u5b58\u5ea6\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002Stratum\u20110 \u306f <strong>\u57fa\u6e96\u6642\u8a08<\/strong> GPS \u3084\u7121\u7dda\u306a\u3069\u3002\u30b9\u30c8\u30e9\u30bf\u30e0 1 \u30b5\u30fc\u30d0\u30fc\u306f\u305d\u308c\u3089\u306b\u76f4\u63a5\u63a5\u7d9a\u3055\u308c\u3001\u30b9\u30c8\u30e9\u30bf\u30e0 2 \u306f\u30b9\u30c8\u30e9\u30bf\u30e0 1 \u304b\u3089\u60c5\u5831\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u30ce\u30fc\u30c9\u306b\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u3001\u5916\u90e8\u8ca0\u8377\u3092\u8efd\u6e1b\u3059\u308b\u5185\u90e8\u30b9\u30c8\u30e9\u30bf\u30e0 3 \u30b5\u30fc\u30d0\u30fc\u306e\u5c0e\u5165\u304c\u6709\u52b9\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u5404\u30ce\u30fc\u30c9\u3092\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u9001\u4fe1\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u30db\u30b9\u30c8\u3068\u30b3\u30f3\u30c6\u30ca\u306b\u7d71\u4e00\u3055\u308c\u305f\u6642\u9593\u3092\u914d\u5e03\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3088\u308a\u3001\u4e00\u8cab\u6027\u306e\u3042\u308b\u30ed\u30b0\u3001\u9069\u5207\u306a\u8a3c\u660e\u66f8\u30a6\u30a3\u30f3\u30c9\u30a6\u3001\u304a\u3088\u3073\u660e\u78ba\u306a\u9806\u5e8f\u3067\u8907\u88fd\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>NTP\u3001Chrony\u3001\u305d\u308c\u3068\u3082 systemd-timesyncd\uff1f\u6bd4\u8f03<\/h2>\n\n<p>\u3092\u30bb\u30c3\u30c8\u3057\u305f\u3002 <strong>\u30af\u30ed\u30cb\u30fc<\/strong> \u751f\u7523\u7684\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u306f\u3001\u3088\u308a\u9ad8\u901f\u306b\u8abf\u6574\u3055\u308c\u3001\u4e0d\u5b89\u5b9a\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u3082\u6b63\u78ba\u306b\u8ffd\u5f93\u3059\u308b\u305f\u3081\u3001\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5b9a\u756a\u306e <strong>ntpd<\/strong> \u5b89\u5b9a\u3057\u3066\u52d5\u4f5c\u3057\u307e\u3059\u304c\u3001\u6642\u8a08\u304c\u300c\u6b63\u78ba\u306b\u306a\u308b\u300d\u307e\u3067\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002systemd-timesyncd \u306f\u8efd\u91cf\u3067\u3001\u5358\u7d14\u306a\u30db\u30b9\u30c8\u306b\u306f\u5341\u5206\u3067\u3059\u304c\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u3057\u3066\u306f\u4f7f\u7528\u3067\u304d\u307e\u305b\u3093\u3002\u30af\u30e9\u30b9\u30bf\u3084\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u3001\u6df7\u5408\u904b\u7528\u3084\u526f\u4f5c\u7528\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u3059\u3079\u3066\u306e\u30ce\u30fc\u30c9\u3067\u7d71\u4e00\u7684\u306a\u5b9f\u88c5\u3092\u884c\u3046\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u4e3b\u306a\u9055\u3044\u3092\u307e\u3068\u3081\u305f\u3082\u306e\u3067\u3059\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u5b9f\u88c5<\/th>\n      <th>\u5f37\u307f<\/th>\n      <th>\u5f31\u70b9<\/th>\n      <th>\u3053\u3093\u306a\u4eba\u306b\u5411\u3044\u3066\u3044\u308b<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td><strong>\u30af\u30ed\u30cb\u30fc<\/strong><\/td>\n      <td>\u9ad8\u901f\u540c\u671f\u3001\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u306b\u5bfe\u3059\u308b\u8010\u6027\u3001\u30b5\u30fc\u30d0\u30fc\u30e2\u30fc\u30c9\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30e2\u30fc\u30c9\u3001\u512a\u308c\u305f\u30aa\u30d5\u30e9\u30a4\u30f3\u51e6\u7406<\/td>\n      <td>\u3088\u308a\u591a\u304f\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u306f\u3001\u660e\u78ba\u306a\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002<\/td>\n      <td>\u751f\u7523\u6027\u306e\u9ad8\u3044\u30b5\u30fc\u30d0\u30fc\u3001\u30af\u30e9\u30a6\u30c9\u3001VM\u3001\u30b3\u30f3\u30c6\u30ca<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>ntpd<\/strong><\/td>\n      <td>\u9577\u5e74\u306b\u308f\u305f\u308a\u5b9f\u8a3c\u6e08\u307f\u3001\u5e45\u5e83\u3044\u5165\u624b\u53ef\u80fd\u6027<\/td>\n      <td>\u8d77\u52d5\u6642\u306b\u9045\u5ef6\u3001\u30e2\u30d0\u30a4\u30eb\u30db\u30b9\u30c8\u3067\u306f\u67d4\u8edf\u6027\u304c\u4f4e\u3044<\/td>\n      <td>\u30ec\u30ac\u30b7\u30fc\u74b0\u5883\u3001\u4fdd\u5b88\u7684\u306a\u8a2d\u5b9a<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>systemd-timesyncd<\/strong><\/td>\n      <td>\u30b9\u30ea\u30e0\u3001SNTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3001\u5b9f\u8cea\u7684\u306b\u300c\u30bc\u30ed\u8a2d\u5b9a\u300d\u201e<\/td>\n      <td>\u30b5\u30fc\u30d0\u30fc\u30e2\u30fc\u30c9\u306a\u3057\u3001\u6a5f\u80fd\u5236\u9650\u3042\u308a<\/td>\n      <td>\u5c0f\u578b\u30b5\u30fc\u30d0\u30fc\u3001\u30a2\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u3001\u30b7\u30f3\u30d7\u30eb\u306a VM<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/timedrift_meeting_9273.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ed\u30fc\u30eb\u30e2\u30c7\u30eb\uff1a\u30bf\u30a4\u30e0\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u5185\u90e8\u30b5\u30fc\u30d0\u30fc\u3092\u660e\u78ba\u306b\u5206\u96e2\u3059\u308b<\/h2>\n\n<p>\u5b9f\u969b\u306b\u306f\u3001\u79c1\u306f\u53b3\u5bc6\u306b\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5c02\u7528<\/strong>-\u30db\u30b9\u30c8\u304a\u3088\u3073\u5185\u90e8 <strong>NTP\u30b5\u30fc\u30d0\u30fc<\/strong>. \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u5b9a\u7fa9\u3055\u308c\u305f\u30bd\u30fc\u30b9\u306e\u307f\u306b\u554f\u3044\u5408\u308f\u305b\u3092\u884c\u3044\u3001NTP\u30dd\u30fc\u30c8\u81ea\u4f53\u306f\u63d0\u4f9b\u3057\u307e\u305b\u3093\u3002\u5185\u90e8\u30b5\u30fc\u30d0\u30fc\u306f\u8907\u6570\u306e\u30bd\u30fc\u30b9\u3092\u96c6\u7d04\u3057\u3001\u54c1\u8cea\u3092\u78ba\u8a8d\u3057\u3066\u3001\u305d\u306e\u74b0\u5883\u5185\u306b\u6642\u9593\u3092\u5206\u914d\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u653b\u6483\u5bfe\u8c61\u9818\u57df\u3092\u7e2e\u5c0f\u3057\u3001\u4f9d\u5b58\u95a2\u4fc2\u3092\u77ed\u304f\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<p>\u91cd\u8981\u306a\u306e\u306f\u3001\u30dd\u30fc\u30ea\u30f3\u30b0\u9593\u9694\u3068\u8a2d\u5b9a\u3092\u304d\u3061\u3093\u3068\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3060\u3088\u3002\u4fe1\u983c\u3067\u304d\u308b\u5185\u90e8\u30bd\u30fc\u30b9\u306b\u306f <code>prefer<\/code> \u5916\u90e8\u30d7\u30ed\u30d0\u30a4\u30c0\u3092\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066\u4fdd\u6301\u3057\u3066\u3044\u307e\u3059\u3002\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u5909\u52d5\u304c\u3042\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u6642\u6298 <code>minpoll<\/code>, \u3088\u308a\u8fc5\u901f\u306b\u4fee\u6b63\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001\u3057\u304b\u3057 <code>maxpoll<\/code> \u5b89\u5b9a\u6027\u304c\u9054\u6210\u3055\u308c\u305f\u3089\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8ca0\u8377\u3092\u4f4e\u304f\u6291\u3048\u308b\u305f\u3081\u306b\u518d\u3073\u3002.<\/p>\n\n<h2>Chrony\u306e\u5b9f\u8df5\uff1a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u8a2d\u5b9a<\/h2>\n\n<p>\u79c1\u306f\u660e\u78ba\u306a\u3082\u306e\u304b\u3089\u59cb\u3081\u308b\u3002 <strong>chrony.conf<\/strong>, \u30c9\u30ea\u30d5\u30c8\u3001\u30b9\u30c8\u30e9\u30bf\u30e0\u3001\u30a2\u30af\u30bb\u30b9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u6700\u5c0f\u9650\u306e\u30d9\u30fc\u30b9\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p><code>driftfile \/var\/lib\/chrony\/drift<br\/>\n\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30e9\u30bf\u30e08<br\/>\n\u30de\u30cb\u30e5\u30a2\u30eb<br\/>\nallow 192.168.0.0\/16<\/code><\/p>\n<p>\u4edd <strong>driftfile<\/strong> \u30af\u30ed\u30c3\u30af\u306e\u8aa4\u5dee\u3092\u8a18\u9332\u3057\u3001\u518d\u8d77\u52d5\u5f8c\u306b\u4fee\u6b63\u3092\u52a0\u901f\u3057\u307e\u3059\u3002\u300clocal stratum 8\u300d\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5916\u90e8\u30bd\u30fc\u30b9\u304c\u5229\u7528\u53ef\u80fd\u306a\u5834\u5408\u3001\u5185\u90e8\u30b5\u30fc\u30d0\u30fc\u306e\u512a\u5148\u5ea6\u306f\u4f4e\u3044\u307e\u307e\u3067\u3042\u308a\u307e\u3059\u3002\u300callow\u300d\u306f\u3001\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u6642\u523b\u3092\u53d6\u5f97\u3067\u304d\u308b\u304b\u3092\u5236\u5fa1\u3057\u3001\u4e0d\u6b63\u4f7f\u7528\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u3053\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001 <code>systemctl start chronyd<\/code> \u305d\u3057\u3066 <code>systemctl enable chronyd<\/code> \u305d\u306e\u5f8c\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u3068\u30bd\u30fc\u30b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n<h3>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5c02\u7528\u304a\u3088\u3073\u30b5\u30fc\u30d0\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/h3>\n<p>\u7d14\u7c8b\u306a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u30dd\u30fc\u30c8\u3092\u7121\u52b9\u306b\u3057\u3001\u8a2d\u5b9a\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u4fdd\u3061\u307e\u3059\u3002<\/p>\n<p><code># \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5c02\u7528\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<br\/>\n\u30b5\u30fc\u30d0\u30fc ntp-intern.example iburst prefer<br\/>\n\u30b5\u30fc\u30d0\u30fc ntp-extern-1.example iburst<br\/>\n\u30b5\u30fc\u30d0\u30fc ntp-extern-2.example iburst<br\/>\n\u30dd\u30fc\u30c8 0<br\/>\nmakestep 1.0 3<br\/>\nrtcsync<br\/>\nleapsectz right\/UTC<\/code><\/p>\n<p><code>\u30dd\u30fc\u30c8 0<\/code> \u30db\u30b9\u30c8\u81ea\u8eab\u304c\u6642\u9593\u3092\u63d0\u6848\u3059\u308b\u3053\u3068\u3092\u9632\u304e\u307e\u3059\u3002. <code>makestep 1.0 3<\/code> \u6700\u521d\u306e 3 \u56de\u306e\u6e2c\u5b9a\u3067\u306f 1 \u79d2\u4ee5\u4e0a\u306e\u53b3\u3057\u3044\u88dc\u6b63\u304c\u8a31\u53ef\u3055\u308c\u307e\u3059\u304c\u3001\u305d\u306e\u5f8c\u306f <em>geslewt<\/em> \uff08\u7a4f\u3084\u304b\u306b\u8abf\u6574\uff09\u3002. <code>rtcsync<\/code> RTC \u3092\u9069\u5207\u306a\u9593\u9694\u3067\u540c\u671f\u3055\u305b\u3001\u518d\u8d77\u52d5\u304c\u5927\u304d\u306a\u30b8\u30e3\u30f3\u30d7\u306a\u304f\u958b\u59cb\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n<p>\u5185\u90e8 NTP \u30b5\u30fc\u30d0\u30fc\u3067\u306f\u3001\u30bd\u30fc\u30b9\u3092\u7d71\u5408\u3057\u3001\u30a2\u30af\u30bb\u30b9\u3092\u7d30\u304b\u304f\u5236\u5fa1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><code># \u5185\u90e8 NTP \u30b5\u30fc\u30d0\u30fc<br\/>\npool 0.pool.example iburst maxsources 4<br\/>\n\u30b5\u30fc\u30d0\u30fc ref1.example iburst prefer nts<br\/>\n\u30b5\u30fc\u30d0\u30fc ref2.example iburst nts<br\/>\nallow 10.0.0.0\/8<br\/>\nallow 192.168.0.0\/16<br\/>\nbindaddress 0.0.0.0<br\/>\nbindcmdaddress 127.0.0.1<br\/>\ncmdallow 127.0.0.1<br\/>\ndriftfile \/var\/lib\/chrony\/drift<br\/>\nmakestep 0.5 5<br\/>\n\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30e9\u30bf\u30e08<br\/>\nleapsectz right\/UTC<\/code><\/p>\n<p>\u30b3\u30de\u30f3\u30c9\u30bd\u30b1\u30c3\u30c8\u3092\u30d0\u30a4\u30f3\u30c9\u3057\u307e\u3059\u3002 <code>127.0.0.1<\/code> \u305d\u3057\u3066\u3001\u30ed\u30fc\u30ab\u30eb\u3067\u306e\u307f\u8a31\u53ef\u3059\u308b\u3002. <code>\u30d7\u30fc\u30eb<\/code> \u8907\u6570\u306e\u60c5\u5831\u6e90\u3092\u81ea\u52d5\u7684\u306b\u6700\u65b0\u306e\u72b6\u614b\u306b\u4fdd\u3061\u307e\u3059\u3002. <code>prefer<\/code> \u5e0c\u671b\u3059\u308b\u30d7\u30e9\u30a4\u30de\u30ea\u30bd\u30fc\u30b9\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u5927\u898f\u6a21\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u306f\u3001\u79c1\u306f <code>bindaddress<\/code> \u7279\u5b9a\u306e\u7ba1\u7406VLAN\u306b\u3002.<\/p>\n\n<h3>\u30dd\u30fc\u30ea\u30f3\u30b0\u3001\u30bd\u30fc\u30b9\u306e\u54c1\u8cea\u3068\u5b89\u5b9a\u6027<\/h3>\n<p>\u4e0d\u5b89\u5b9a\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u6700\u521d\u306f\u6e2c\u5b9a\u5bc6\u5ea6\u3092\u9ad8\u3081\u3001\u5b89\u5b9a\u5316\u5f8c\u306b\u9ad8\u3081\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p><code>\u30b5\u30fc\u30d0\u30fc ntp-extern-1.example iburst minpoll 6 maxpoll 10<\/code><\/p>\n<p>\u3068\u4e00\u7dd2\u306b <code>minsamples<\/code>, <code>maxsamples<\/code> \u305d\u3057\u3066 <code>\u6700\u5927\u8ddd\u96e2<\/code> \u79c1\u306f\u60aa\u3044\u60c5\u5831\u6e90\u306f\u65e9\u3044\u6bb5\u968e\u3067\u6392\u9664\u3057\u307e\u3059\u3002\u975e\u540c\u671f\u30d1\u30b9\u3084\u975e\u5bfe\u79f0\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u5834\u5408\u306f\u3001 <code>hwtimestamp<\/code> \u9069\u5207\u306a NIC \u3067\u30b8\u30c3\u30bf\u30fc\u3092\u4f4e\u6e1b\u3059\u308b\uff1a<\/p>\n<p><code>hwtimestamp eth0<\/code><\/p>\n\n<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u6b63\u78ba\u6027\uff1aNTS\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3001\u958f\u79d2<\/h2>\n\n<p>\u79c1\u306f NTP \u63a5\u7d9a\u3092\u4ee5\u4e0b\u3067\u4fdd\u8b77\u3057\u3066\u3044\u307e\u3059\u3002 <strong>NTS<\/strong>, \u653b\u6483\u8005\u304c\u8aa4\u3063\u305f\u6642\u523b\u3092\u9001\u308a\u8fbc\u307e\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u6b21\u306e\u3088\u3046\u306a\u30a8\u30f3\u30c8\u30ea <code>\u30b5\u30fc\u30d0\u30fc\u6642\u9593.cloudflare.com iburst nts<\/code> \u8fc5\u901f\u306a\u30b9\u30bf\u30fc\u30c8\u3092\u5b9f\u73fe <strong>iburst<\/strong> \u304a\u3088\u3073\u6697\u53f7\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fdd\u8b77\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ab\u30fc\u30c9\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30ab\u30fc\u30cd\u30eb\u306e\u30ec\u30a4\u30c6\u30f3\u30b7\u5909\u52d5\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d4\u30f3\u30b0\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002\u958f\u79d2\u306b\u3064\u3044\u3066\u306f\u3001\u300cleapsectz right\/UTC\u300d\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u6025\u6fc0\u306a\u6642\u9593\u30b8\u30e3\u30f3\u30d7\u3092\u8a8d\u8b58\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u4fe1\u983c\u6027\u304c\u7dad\u6301\u3055\u308c\u3001\u654f\u611f\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306e\u30a8\u30e9\u30fc\u304c\u9632\u6b62\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n<h3>\u786c\u5316\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08<\/h3>\n<p>\u79c1\u306f\u5236\u9650\u3059\u308b <strong>UDP\/123<\/strong> \u898f\u5b9a\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u53b3\u5bc6\u306b\u3001\u65b9\u5411\u3082 <em>\u8a73\u7d30\u306b<\/em> (\u30af\u30e9\u30a4\u30a2\u30f3\u30c8 \u2192 \u5185\u90e8\u30b5\u30fc\u30d0\u30fc) \u304a\u3088\u3073 <em>\u51fa\u767a\u70b9<\/em> (\u30b5\u30fc\u30d0\u30fc \u2192 \u5916\u90e8\u30bd\u30fc\u30b9)\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u306f\u3001\u79c1\u306f <code>\u30dd\u30fc\u30c8 0<\/code>, \u305d\u308c\u3089\u304c\u60c5\u5831\u6e90\u3068\u3057\u3066\u60aa\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u306a\u3044\u3088\u3046\u3001\u3042\u3089\u304b\u3058\u3081\u9632\u6b62\u3059\u308b\u305f\u3081\u3067\u3059\u3002. <code>allow<\/code>\/<code>deny<\/code> Chrony \u306f\u3055\u3089\u306b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u884c\u3044\u307e\u3059\u3002\u30bb\u30b0\u30e1\u30f3\u30c8\u5316\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u30ef\u30fc\u30ab\u30fc\u3078\u306e\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u304c\u4f4e\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5185\u90e8\u30b5\u30fc\u30d0\u30fc\u3092\u914d\u7f6e\u3057\u3001\u30d1\u30b9\u3092\u78ba\u5b9a\u7684\u306b\u4fdd\u3061\u307e\u3059\uff08\u975e\u5bfe\u79f0\u30eb\u30fc\u30c8\u3084\u904e\u5ea6\u306a\u30b7\u30a7\u30fc\u30d4\u30f3\u30b0\u306f\u4f7f\u7528\u3057\u307e\u305b\u3093\uff09\u3002.<\/p>\n\n<p>NTS \u306f\u3001\u5c02\u7528\u30dd\u30fc\u30c8\u3092\u4ecb\u3057\u305f\u521d\u671f\u9375\u306e\u5408\u610f\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u3053\u306e\u5b9b\u5148\u30dd\u30fc\u30c8\u3092\u4fe1\u983c\u3067\u304d\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u306e\u307f\u306b\u8a31\u53ef\u3057\u3066\u3044\u307e\u3059\u3002NTS \u304c\u6a5f\u80fd\u3057\u306a\u304f\u306a\u3063\u305f\u5834\u5408\u3001\u79c1\u306f\u610f\u56f3\u7684\u306a\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u52d5\u4f5c\uff08\u5b89\u5168\u3067\u306a\u3044\u30bd\u30fc\u30b9\u3078\u306e\u9759\u304b\u306a\u5207\u308a\u66ff\u3048\u3067\u306f\u306a\u304f\u3001\u53b3\u91cd\u306a\u30a2\u30e9\u30fc\u30e0\uff09\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u300c\u9759\u304b\u306a\u8150\u6557\u300d\u3092\u56de\u907f\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h3>\u30ea\u30fc\u30d7\u30bb\u30ab\u30f3\u30c9\u6226\u7565\u3068\u30b9\u30df\u30a2\u30ea\u30f3\u30b0<\/h3>\n<p>\u74b0\u5883\u3054\u3068\u306b\u6c7a\u5b9a\u3057\u307e\u3059\uff1a\u5f93\u6765\u306e\u30ea\u30fc\u30d7\u51e6\u7406\uff08UTC\u3068\u958f\u79d2\uff09\u307e\u305f\u306f <strong>\u30ea\u30fc\u30d7\u30b9\u30de\u30fc\u30ea\u30f3\u30b0<\/strong>, \u3001\u79d2\u304c\u30a6\u30a3\u30f3\u30c9\u30a6\u3067\u5e73\u6ed1\u5316\u3055\u308c\u308b\u3082\u306e\u3067\u3059\u3002\u91cd\u8981\uff1a\u6df7\u5408\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u4e00\u90e8\u306e\u60c5\u5831\u6e90\u304c\u5e73\u6ed1\u5316\u3055\u308c\u3001\u4ed6\u306e\u60c5\u5831\u6e90\u304c\u5e73\u6ed1\u5316\u3055\u308c\u306a\u3044\u5834\u5408\u3001\u6c38\u7d9a\u7684\u306a\u30aa\u30d5\u30bb\u30c3\u30c8\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u91cd\u8981\u306a\u30af\u30e9\u30b9\u30bf\u3067\u306f\u3001\u5168\u30d5\u30ea\u30fc\u30c8\u3092 1 \u3064\u306e\u30e9\u30a4\u30f3\u306b\u4fdd\u3061\u3001\u305d\u306e\u9078\u629e\u3092\u8a18\u9332\u3057\u3066\u3044\u307e\u3059\u3002Chrony \u306f\u3001 <code>leapsectz<\/code>; \u30b9\u30e0\u30fc\u30b8\u30f3\u30b0\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u3059\u3079\u3066\u306e\u30ce\u30fc\u30c9\u306b\u5bfe\u3057\u3066\u4e00\u8cab\u3057\u3066\u8a08\u753b\u3092\u7acb\u3066\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a\u30c9\u30ea\u30d5\u30c8\u3092\u53ef\u8996\u5316\u3059\u308b<\/h2>\n\n<p>\u30b9\u30c6\u30fc\u30bf\u30b9\u3068\u30aa\u30d5\u30bb\u30c3\u30c8\u3092 <strong>timedatectl<\/strong> \u307e\u305f\u3001Chrony\u30c4\u30fc\u30eb\u3082\u540c\u69d8\u3067\u3059\u3002 <code>chronyc\u30bd\u30fc\u30b9<\/code> \u305d\u3057\u3066 <code>\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0<\/code>. RTC \u3068\u30b7\u30b9\u30c6\u30e0\u6642\u523b\u306e\u5dee\u306f\u3001\u6700\u521d\u306f\u6b63\u5e38\u3067\u3059\u304c\u3001\u3059\u3050\u306b\u5c0f\u3055\u304f\u306a\u308b\u306f\u305a\u3067\u3059\u3002\u9577\u671f\u7684\u306a\u76e3\u8996\u306e\u305f\u3081\u306b\u3001\u79c1\u306f\u30e1\u30c8\u30ea\u30c3\u30af\u3068\u30a2\u30e9\u30fc\u30e0\u3092 <a href=\"https:\/\/webhosting.de\/ja\/grafana-prometheus-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%83%a2%e3%83%8b%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0-%e3%82%b9%e3%82%bf%e3%83%83%e3%82%af-%e3%83%80%e3%83%83%e3%82%b7\/\">\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u30b9\u30bf\u30c3\u30af<\/a>. \u3053\u308c\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6c17\u4ed8\u304f\u524d\u306b\u30c8\u30ec\u30f3\u30c9\u3001\u30d4\u30fc\u30af\u3001\u7570\u5e38\u5024\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30aa\u30d5\u30bb\u30c3\u30c8\u304c\u5b9a\u7fa9\u3055\u308c\u305f\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u305f\u5834\u5408\u3001\u30a2\u30e9\u30fc\u30c8\u304c\u81ea\u52d5\u7684\u306b\u4f5c\u52d5\u3057\u307e\u3059\u3002.<\/p>\n\n<h3>\u6307\u6a19\u3068\u30a2\u30e9\u30fc\u30e0\u95be\u5024<\/h3>\n<ul>\n  <li><strong>\u30b7\u30b9\u30c6\u30e0\u30aa\u30d5\u30bb\u30c3\u30c8<\/strong> (\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306e\u6700\u7d42\/\u5e73\u5747\u30aa\u30d5\u30bb\u30c3\u30c8): 5 \u30df\u30ea\u79d2\u4ee5\u4e0a\u3067\u8b66\u544a\u300125 \u30df\u30ea\u79d2\u4ee5\u4e0a\u3067 Web\/DB \u30b9\u30bf\u30c3\u30af\u306b\u304a\u3044\u3066\u91cd\u5927\u306a\u554f\u984c\u3002.<\/li>\n  <li><strong>\u6839\u306e\u5206\u6563<\/strong>: \u30bd\u30fc\u30b9\u306e\u4e0d\u78ba\u5b9f\u6027\u3092\u793a\u3057\u307e\u3059\u3002\u305d\u308c\u304c\u6301\u7d9a\u7684\u306b\u9ad8\u307e\u308b\u5834\u5408\u3001\u79c1\u306f\u30bd\u30fc\u30b9\u306e\u5909\u66f4\u3067\u5bfe\u5fdc\u3057\u307e\u3059\u3002.<\/li>\n  <li><strong>\u5230\u9054\u53ef\u80fd\u6027<\/strong> \u305d\u3057\u3066 <strong>\u30b8\u30c3\u30bf\u30fc<\/strong> \u51fa\u5178\uff1a\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u3068\u4e0d\u5b89\u5b9a\u6027\u3092\u65e9\u671f\u306b\u691c\u51fa\u3002.<\/li>\n  <li><strong>Stratum<\/strong>: \u4e88\u60f3\u5916\u306e\u5c64\u306e\u4e0a\u6607\u306f\u3001\u65ad\u71b1\u6750\u306e\u52a3\u5316\u3084\u71b1\u6e90\u306e\u640d\u5931\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/li>\n<\/ul>\n<p>\u30a2\u30c9\u30db\u30c3\u30af\u8a3a\u65ad\u306b\u306f\u3001\u3055\u3089\u306b\u4ee5\u4e0b\u3082\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><code>chronyc sourcestats -v<br\/>\nchronyc ntpdata<br\/>\nchronyc rtcdata<br\/>\nchronyc \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3<\/code><\/p>\n<p>\u8868\u793a <code>\u6d3b\u52d5<\/code> \u591a\u304f\u306e\u7121\u52b9\u306a\u30bd\u30fc\u30b9\u304c\u3042\u308b\u305f\u3081\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001MTU\/\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u304a\u3088\u3073\u975e\u5bfe\u79f0\u30d1\u30b9\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u518d\u8d77\u52d5\u5f8c\u306b\u5927\u304d\u306a\u5909\u5316\u304c\u3042\u308b\u5834\u5408\u306f\u3001 <code>makestep<\/code> \u591a\u304f\u306e\u5834\u5408\u3001\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3001\u72ed\u3059\u304e\u308b\u6577\u5c45\u306b\u3088\u3063\u3066\u59a8\u3052\u3089\u308c\u3066\u3044\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/zeitdrift-server-synchronisation-4827.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30af\u30e9\u30b9\u30bf\u3067\u4e00\u8cab\u3057\u305f\u6642\u9593\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n<p>\u79c1\u306f\u3001\u901a\u5e38\u5c11\u306a\u304f\u3068\u30823\u3064\u306e\u5197\u9577\u306a\u6642\u9593\u6e90\u3092\u7528\u610f\u3057\u3066\u304a\u304f\u3079\u304d\u3060\u3068\u601d\u3044\u307e\u3059\u3002 <strong>\u30b5\u30fc\u30d0\u30fc<\/strong>, 1\u53f0\u304c\u6545\u969c\u3057\u3066\u3082\u554f\u984c\u304c\u306a\u3044\u3088\u3046\u306b\u3002\u5185\u90e8\u30b9\u30c8\u30e9\u30bf\u30e03\u30b5\u30fc\u30d0\u30fc\u304c\u30d5\u30ea\u30fc\u30c8\u306b\u4f9b\u7d66\u3057\u3001\u305d\u308c\u81ea\u4f53\u304c\u8907\u6570\u306e\u30b9\u30c8\u30e9\u30bf\u30e02\u30bd\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u307e\u3059\u3002ntpd \u3068 Chrony \u306e\u6df7\u5728\u904b\u7528\u306f\u3001\u7570\u306a\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304c\u4e88\u671f\u305b\u306c <strong>\u30aa\u30d5\u30bb\u30c3\u30c8<\/strong> \u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002RTC \u306f UTC \u3067\u4fdd\u5b58\u3057\u307e\u3059\u3002 <code>timedatectl set-local-rtc 0<\/code>, \u590f\u6642\u9593\u306e\u5909\u66f4\u3067\u4e88\u671f\u305b\u306c\u4e8b\u614b\u304c\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306b\u3002\u5909\u66f4\u306f\u3059\u3079\u3066\u8a18\u9332\u3057\u3066\u3001\u30c8\u30e9\u30d6\u30eb\u767a\u751f\u6642\u306b\u5c65\u6b74\u3092\u3059\u3050\u306b\u628a\u63e1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h3>Kubernetes \u3068\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3<\/h3>\n<p>Kubernetes \u3084\u540c\u69d8\u306e\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001Chrony \u3092 <strong>\u30ce\u30fc\u30c9<\/strong>, \u3001\u500b\u3005\u306e\u30dd\u30c3\u30c9\u3067\u306f\u306a\u304f\u3002\u30b3\u30f3\u30c6\u30ca\u306f\u30db\u30b9\u30c8\u306e\u6642\u9593\u3092\u7d99\u627f\u3057\u307e\u3059\u3002\u4e8c\u91cd\u306e\u4fee\u6b63\u306f\u30c9\u30ea\u30d5\u30c8\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002etcd \u306a\u3069\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u6642\u9593\u306e\u8aa4\u5dee\u306b\u654f\u611f\u3067\u3059\u30022 \u6841\u306e\u30df\u30ea\u79d2\u3067\u3082\u3001\u9078\u629e\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ec\u30fc\u30f3\u3068\u30ef\u30fc\u30ab\u30fc\u304c\u540c\u3058\u5185\u90e8\u30bd\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u3001\u304a\u3088\u3073 leapsmear-Mix \u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u30dd\u30c3\u30c9\/\u30ce\u30fc\u30c9\u304c\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002.<\/p>\n\n<h3>\u30af\u30e9\u30a6\u30c9\u306e\u7279\u5fb4<\/h3>\n<p>\u591a\u304f\u306e\u30af\u30e9\u30a6\u30c9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f <strong>\u5185\u90e8\u30bf\u30a4\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong> \u6e96\u5099\u5b8c\u4e86\u3002\u79c1\u306f\u3053\u308c\u3092\u30d7\u30e9\u30a4\u30de\u30ea\u30bd\u30fc\u30b9\uff08\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\uff09\u3068\u3057\u3066\u6d3b\u7528\u3057\u3001\u5916\u90e8 NTS \u30bd\u30fc\u30b9\u3092\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066\u88dc\u5b8c\u3057\u3066\u3044\u307e\u3059\u3002\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u5834\u5408 <em>\u51ac\u7720<\/em> \u6216\u3044\u306f <em>\u30b9\u30c8\u30c3\u30d7<\/em> \u79c1\u306f\u521d\u671f\u30b9\u30c6\u30c3\u30d7\u3092\u8a31\u53ef\u3057\u307e\u3059 <code>makestep<\/code>. Chrony \u304c\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u5834\u5408\u306f\u3001\u4e8c\u91cd\u88dc\u6b63\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306b\u3088\u308b\u30db\u30b9\u30c8\u304b\u3089\u30b2\u30b9\u30c8\u3078\u306e\u6642\u523b\u540c\u671f\u3092\u7121\u52b9\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u7279\u5225\u306a\u30b7\u30ca\u30ea\u30aa\uff1aVM\u3001\u30b3\u30f3\u30c6\u30ca\u3001\u30af\u30e9\u30a6\u30c9<\/h2>\n\n<p>VM \u3067\u306f\u3001\u30db\u30b9\u30c8\u304b\u3089\u30b2\u30b9\u30c8\u3078\u306e\u6642\u9593\u3092\u6ce8\u610f\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u4e8c\u91cd\u306e <strong>\u8a02\u6b63<\/strong> \uff08\u30cf\u30a4\u30d1\u30fc\u30d0\u30a4\u30b6\u30fc\u3068\u30b2\u30b9\u30c8\uff09\u306f\u6df7\u4e71\u3092\u62db\u304d\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u306f\u30db\u30b9\u30c8\u304b\u3089\u6642\u9593\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306f\u57fa\u76e4\u306b\u91cd\u70b9\u304c\u7f6e\u304b\u308c\u307e\u3059\u3002\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u983b\u7e41\u306b\u8d77\u52d5\u3059\u308b\u5f3e\u529b\u6027\u306e\u3042\u308b\u74b0\u5883\u3067\u306f\u3001\u8fc5\u901f\u306a\u5bfe\u5fdc\u304c\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u3059\u3002 <strong>\u53ce\u675f<\/strong> Chrony\u304b\u3089\u3002\u63a5\u7d9a\u72b6\u614b\u306e\u60aa\u3044\u30a8\u30c3\u30b8\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u3084\u4e00\u6642\u7684\u306a\u30aa\u30d5\u30e9\u30a4\u30f3\u72b6\u614b\u306b\u304a\u3051\u308bChrony\u306e\u6319\u52d5\u304c\u6709\u5229\u306b\u50cd\u304d\u307e\u3059\u3002\u6642\u9593\u57fa\u6e96\u3084\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u306b\u95a2\u3059\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790\u306b\u306f\u3001\u3053\u306e\u6a5f\u80fd\u304c\u975e\u5e38\u306b\u5f79\u7acb\u3063\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e5%bf%9c%e7%ad%94%e6%99%82%e9%96%93%e5%88%86%e6%9e%90-ttfb-tti%e6%9c%80%e9%81%a9%e5%8c%96-%e9%80%9f%e5%ba%a6%e4%b8%80%e8%a6%a7\/\">\u5fdc\u7b54\u6642\u9593\u5206\u6790<\/a>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/zeitdrift-servercloud-4392.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3001\u30ed\u30b0\u3001\u304a\u3088\u3073\u8a3c\u660e\u66f8<\/h2>\n\n<p>\u30af\u30ea\u30fc\u30f3\u306a\u6642\u9593\u306f\u5947\u5999\u306a\u6642\u9593\u3092\u6e1b\u3089\u3059 <strong>\u30c7\u30c3\u30c9\u30ed\u30c3\u30af<\/strong> \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u306f\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u9806\u5e8f\u304c\u4e00\u8cab\u3057\u3066\u4fdd\u305f\u308c\u308b\u305f\u3081\u3067\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u6b63\u3057\u304f\u7121\u52b9\u5316\u3055\u308c\u3001CRL \u304a\u3088\u3073 OCSP \u306f\u5b9f\u969b\u306e\u6642\u9593\u67a0\u3067\u6a5f\u80fd\u3057\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u304c\u5236\u5fa1\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u591a\u304f\u306e\u300c\u30b4\u30fc\u30b9\u30c8\u30a8\u30e9\u30fc\u300d\u306f\u89e3\u6d88\u3055\u308c\u307e\u3059\u3002\u30a4\u30d9\u30f3\u30c8\u3092\u6b63\u3057\u304f\u76f8\u95a2\u3055\u305b\u308b\u305f\u3081\u3001\u79c1\u306f\u4e2d\u592e\u96c6\u6a29\u7684\u306a <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%ad%e3%82%b0%e9%9b%86%e7%b4%84-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e6%9c%80%e9%81%a9%e5%8c%96-%e3%82%a4%e3%83%b3%e3%82%b5%e3%82%a4\/\">\u30ed\u30b0\u5206\u6790<\/a> \u540c\u4e00\u306e\u6642\u523b\u6e90\u3092\u4f7f\u7528\u3002\u6709\u52b9\u671f\u9650\u304c\u30b7\u30b9\u30c6\u30e0\u6642\u523b\u3068\u4e00\u81f4\u3059\u308b\u305f\u3081\u3001\u8a3c\u660e\u66f8\u306e\u4fe1\u983c\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>Chrony \u3078\u306e\u9014\u5207\u308c\u308b\u3053\u3068\u306e\u306a\u3044\u79fb\u884c\u30d1\u30b9<\/h2>\n\n<p>\u79c1\u306f\u3001\u3053\u306e\u79fb\u884c\u3092\u6bb5\u968e\u7684\u306b\u884c\u3046\u3053\u3068\u3092\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30b5\u30fc\u30d3\u30b9\u5185\u5bb9<\/strong> \u3044\u3064\u3067\u3082\u6642\u9593\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u307e\u305a\u3001\u5185\u90e8\u30af\u30ed\u30cb\u30b5\u30fc\u30d0\u30fc\u3092\u69cb\u7bc9\u3057\u3001\u3044\u304f\u3064\u304b\u306e\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u30db\u30b9\u30c8\u3092\u305d\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u6307\u5411\u3055\u305b\u307e\u3059\u3002\u30bd\u30fc\u30b9\u304c\u5b89\u5b9a\u3057\u3066\u52d5\u4f5c\u3057\u305f\u3089\u3001\u6bb5\u968e\u7684\u306b\u672c\u756a\u30ce\u30fc\u30c9\u3092\u5207\u308a\u66ff\u3048\u307e\u3059\u3002\u79fb\u884c\u4e2d\u306f\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u3068\u5f85\u3061\u6642\u9593\u3092\u6e2c\u5b9a\u3057\u3066\u3001\u5dee\u7570\u3092\u65e9\u671f\u306b\u767a\u898b\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u304c\u5b89\u5b9a\u3057\u305f\u3089\u3001\u53e4\u3044 ntpd \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u7121\u52b9\u306b\u3057\u3001\u53e4\u3044\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u307e\u3059\u3002.<\/p>\n\n<h3>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u7dca\u6025\u6642\u5bfe\u5fdc\u8a08\u753b<\/h3>\n<p>\u79c1\u306f <strong>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/strong> \u6e96\u5099\uff1a\u53e4\u3044\u8a2d\u5b9a\u3092\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066 ntpd \u307e\u305f\u306f systemd-timesyncd \u306b\u623b\u308b\u624b\u9806\u3092\u6587\u66f8\u5316\u3057\u307e\u3059\u3002\u7dca\u6025\u4e8b\u614b\u306b\u5099\u3048\u3066\u3001\u7c21\u5358\u306a\u5b9f\u884c\u624b\u9806\u66f8\u3092\u4f5c\u6210\u3057\u307e\u3059\uff1a\u30b5\u30fc\u30d3\u30b9\u3092\u4e00\u6642\u505c\u6b62\u3057\u3001, <code>chronyd<\/code> \u505c\u6b62\u3001\u624b\u52d5\u3067\u6642\u9593\u3092\u8a2d\u5b9a\uff08\u5fc5\u8981\u306a\u5834\u5408\u306e\u307f\uff09\u3001\u30b5\u30fc\u30d3\u30b9\u3092\u518d\u8d77\u52d5\u3001\u30bd\u30fc\u30b9\u3092\u78ba\u8a8d\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u76e3\u8996\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b8\u30e3\u30f3\u30d7\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u624b\u52d5\u306b\u3088\u308b\u64cd\u4f5c\u306f\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/zeitdrift_server_ntp_2947.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5b9f\u65bd\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n\n<p>\u79c1\u306f\u6700\u521d\u306b\u660e\u78ba\u306a\u5b9a\u7fa9\u3092\u884c\u3044\u307e\u3059\u3002 <strong>\u6642\u9593\u6e90<\/strong> \u305d\u3057\u3066\u3001\u5185\u90e8\u30b9\u30c8\u30e9\u30bf\u30e03\u30b5\u30fc\u30d0\u30fc\u3067\u30bf\u30fc\u30b2\u30c3\u30c8\u968e\u5c64\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u3059\u3079\u3066\u306e\u30db\u30b9\u30c8\u306b\u7d71\u4e00\u3055\u308c\u305f\u69cb\u6210\u3092\u4f5c\u6210\u3057\u3001\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u3067\u30c6\u30b9\u30c8\u3057\u3001\u6587\u66f8\u5316\u3057\u307e\u3059\u3002 \u9069\u5207\u306a\u5834\u6240\u3067 NTS \u3092\u6709\u52b9\u306b\u3057\u3001\u9069\u5207\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ab\u30fc\u30c9\u3067\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30e1\u30c8\u30ea\u30c3\u30af\u3092\u30a2\u30e9\u30fc\u30e0\u306b\u7d44\u307f\u8fbc\u307f\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u3057\u304d\u3044\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u6642\u9593\u30a8\u30e9\u30fc\u304c\u6df1\u523b\u5316\u3059\u308b\u524d\u306b\u3001\u5b9a\u671f\u7684\u306a\u30c1\u30a7\u30c3\u30af\u3092\u8a08\u753b\u3057\u307e\u3059\u3002.<\/p>\n\n<h3>\u30e9\u30f3\u30d6\u30c3\u30af\uff1a10 \u5206\u9593\u306e\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af<\/h3>\n<p>\u4f55\u304b\u304c\u300c\u304a\u304b\u3057\u3044\u300d\u3068\u611f\u3058\u305f\u3089\u3001\u79c1\u306f\u6b21\u306e\u3088\u3046\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/p>\n<ol>\n  <li><strong>\u30b7\u30b9\u30c6\u30e0\u30b9\u30c6\u30fc\u30bf\u30b9<\/strong>: <code>timedatectl<\/code> (NTP \u6709\u52b9\uff1fRTC \u306f UTC \uff1f)<\/li>\n  <li><strong>\u60c5\u5831\u6e90<\/strong>: <code>chronyc sources -v<\/code> \uff08\u30ea\u30fc\u30c1\u3001\u30b9\u30c8\u30e9\u30bf\u30e0\u3001\u30b8\u30c3\u30bf\u30fc\uff09<\/li>\n  <li><strong>\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0<\/strong>: <code>\u30af\u30ed\u30cb\u30c3\u30af\u8ffd\u8de1<\/code> \uff08\u30aa\u30d5\u30bb\u30c3\u30c8\u3001\u30b9\u30ad\u30e5\u30fc\u3001\u30eb\u30fc\u30c8\u5206\u6563\uff09<\/li>\n  <li><strong>\u30cd\u30c3\u30c8<\/strong>: UDP\/123 \u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\/ACL \u3092\u78ba\u8a8d\u3057\u3001\u9045\u5ef6\/\u640d\u5931\u3092\u6e2c\u5b9a\u3059\u308b<\/li>\n  <li><strong>\u30c9\u30ea\u30d5\u30c8<\/strong>: <code>chronyc sourcestats<\/code> \u6570\u5206\u9593\u89b3\u5bdf\u3059\u308b<\/li>\n  <li><strong>RTC<\/strong>: <code>chronyc rtcdata<\/code>, \u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066. <code>rtcsync<\/code> \u30a2\u30af\u30c6\u30a3\u30d9\u30fc\u30c8<\/li>\n  <li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong>: NTS \u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u78ba\u8a8d\u3001\u30b5\u30a4\u30ec\u30f3\u30c8\u30c7\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u306a\u3057<\/li>\n<\/ol>\n\n<h2>\u8cbb\u7528\u3068\u4fbf\u76ca\u3092\u30e6\u30fc\u30ed\u3067\u8003\u3048\u305f\u5834\u5408<\/h2>\n\n<p>\u8aa4\u3063\u305f <strong>\u6642\u8a08<\/strong> \u6642\u9593\u3068\u8cbb\u7528\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u30c7\u30d7\u30ed\u30a4\u306e\u5931\u6557\u3001\u30b5\u30dd\u30fc\u30c8\u30b1\u30fc\u30b9\u3001SLA \u306e\u6e1b\u984d\u306a\u3069\u304c\u7a4d\u307f\u91cd\u306a\u308a\u307e\u3059\u3002\u793e\u5185\u306e Chrony \u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u3068\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306f\u5b89\u4fa1\u3067\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u305d\u306e\u8cbb\u7528\u306f 3 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src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/zeitdrift-server-ntp-8412.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u6982\u8981<\/h2>\n\n<p><strong>\u30bf\u30a4\u30e0\u30c9\u30ea\u30d5\u30c8<\/strong> \u30b5\u30fc\u30d0\u30fc\u306e\u901f\u5ea6\u3092\u4f4e\u4e0b\u3055\u305b\u3001\u30ed\u30b0\u3092\u6df7\u4e71\u3055\u305b\u3001\u8a3c\u660e\u66f8\u306e\u540c\u671f\u3092\u4e71\u3057\u307e\u3059\u3002Chrony\u3001NTP\u3001\u304a\u3088\u3073\u5185\u90e8\u30b9\u30c8\u30e9\u30bf\u30e0\u8a2d\u8a08\u306b\u3088\u308a\u3001\u6642\u8a08\u306e\u540c\u671f\u3068\u30b5\u30fc\u30d3\u30b9\u306e\u4fe1\u983c\u6027\u3092\u7dad\u6301\u3057\u3066\u3044\u307e\u3059\u3002NTS \u306f\u30bd\u30fc\u30b9\u3092\u4fdd\u8b77\u3057\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306f\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3092\u5e73\u6ed1\u5316\u3057\u3001\u6b63\u78ba\u306a\u958f\u79d2\u51e6\u7406\u306b\u3088\u308a\u30b8\u30e3\u30f3\u30d7\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u30e1\u30c8\u30ea\u30af\u30b9\u3068\u30a2\u30e9\u30fc\u30e0\u306b\u3088\u308b\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6c17\u4ed8\u304f\u524d\u306b\u504f\u5dee\u3092\u691c\u77e5\u3057\u307e\u3059\u3002 NTP Chrony \u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u4e00\u8cab\u3057\u305f\u6642\u9593\u67a0\u3001\u969c\u5bb3\u306e\u6e1b\u5c11\u3001\u305d\u3057\u3066\u30e6\u30fc\u30ed\u3067\u6e2c\u5b9a\u53ef\u80fd\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u5f97\u3089\u308c\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>NTP \u3068 Chrony 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