{"id":3611,"date":"2023-10-24T14:47:01","date_gmt":"2023-10-24T05:47:01","guid":{"rendered":"https:\/\/engineer-chanpu.blog\/?p=3611"},"modified":"2024-05-05T10:01:29","modified_gmt":"2024-05-05T01:01:29","slug":"linux-timezone-%eb%b0%8f-ntp-%ec%84%a4%ec%a0%95-%ec%b4%88%ea%b8%b0-%eb%b0%b0%ed%8f%ac%ec%97%90%ec%84%9c-%ec%8b%a4%ec%88%98%ed%96%88%ec%9d%84-%eb%95%8c-%eb%b3%b5%ea%b5%ac-%eb%b0%a9%eb%b2%95","status":"publish","type":"post","link":"https:\/\/engineer-chanpu.blog\/?p=3611","title":{"rendered":"Linux Timezone \ubc0f NTP \uc124\uc815: \ucd08\uae30 \ubc30\ud3ec\uc5d0\uc11c \uc2e4\uc218\ud588\uc744 \ub54c \ubcf5\uad6c \ubc29\ubc95"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u69cb\u7bc9\u624b\u9806\u304c\u6f0f\u308c\u3066\u3057\u307e\u3063\u305f<\/h2>\n\n\n\n<p class=\"has-text-align-left\">\u65b0\u3057\u304f\u59cb\u3081\u305f\u30b5\u30a4\u30c8\u306e\u521d\u671f\u69cb\u7bc9\u3067CentOS\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3057\u3066\u3044\u308b\u6700\u4e2d\u3001\u3042\u308b\u3053\u3068\u306b\u6c17\u304c\u3064\u304d\u307e\u3057\u305f\u3002<br>Undercloud Hypervisor (OpenStack \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30cd\u30fc\u30e0) \u306eNTP\u78ba\u8a8d\u3057\u305f\u3089\u3001\u3042\u308c\u3001\u4f55\u304b\u304c\u304a\u304b\u3057\u3044\uff1f<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"commnad--timedatectl-\u629c\u7c8b\">Commnad : timedatectl \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>      Local time: Mon 2021-12-20 12:46:31 EST\n  Universal time: Mon 2021-12-20 17:46:31 UTC\n        RTC time: Mon 2021-12-20 17:46:31\n       Time zone: America\/New_York (EST, -0500)\n     NTP enabled: yes\nNTP synchronized: yes<\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"commnad--ntpq--pn-\u629c\u7c8b\">Commnad : ntpq -pn \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>st t when poll reach   delay   offset  jitter\n=============================================\n 5 l    6   64    3    0.000    0.000   0.000\n 3 u    2   64    3    0.119  -337428   0.111\n 3 u   58   64    1    0.110  -337428   0.031\n 3 u    1   64    3    0.176  -337428   0.090<\/sub><\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"613\" src=\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/1sadf34gfvs-1-1024x613.jpg\" alt=\"\" class=\"wp-image-4633\" style=\"aspect-ratio:1.0635359116022098;object-fit:contain;width:572px;height:auto\" srcset=\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/1sadf34gfvs-1-1024x613.jpg 1024w, https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/1sadf34gfvs-1-300x180.jpg 300w, https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/1sadf34gfvs-1-768x460.jpg 768w, https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/1sadf34gfvs-1-1536x919.jpg 1536w, https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/1sadf34gfvs-1.jpg 1626w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-left\"><br>\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u304c\u65e5\u672c\u3058\u3083\u306a\u304f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30a2\u30e1\u30ea\u30ab\u306b\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p><code>date<\/code>\u30b3\u30de\u30f3\u30c9\u3067\u78ba\u8a8d\u3057\u305f\u3089\u3001\u306a\u3093\u3068\u6642\u5dee\u307c\u3051\u3057\u3066\u308b\u307f\u305f\u3044\u306b\u6642\u9593\u304c\u5408\u308f\u306a\u3044\u3002<br>\u3055\u3089\u306bntp\u306eoffset\u3001\u3053\u306e\u6570\u5b57\u3001\u898b\u305f\u3053\u3068\u306a\u3044\u3093\u3060\u3051\u3069\u2026 -337428\uff1f\u7570\u5e38\u3067\u3042\u3063\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u5909\u66f4\u4f5c\u696d<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uff11\uff0e\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3092\u65e5\u672c\u6642\u9593\u306b\u5909\u66f4<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code><sub># Command : timedatectl list-timezones | grep -i tokyo\n# Command : timedatectl set-timezone Asia\/Tokyo\n# Command : timedatectl set-ntp no\n# Command : timedatectl set-time \"2021-12-20\"\n# Command : timedatectl set-ntp yes<\/sub><\/code><\/pre>\n\n\n\n<p class=\"has-text-align-left\">\u307e\u305a\u3001Time zone \u8a2d\u5b9a\u3092\u65e5\u672c\u6642\u9593\u306b\u5909\u66f4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><sub># Commnad : systemctl status ntpd\n\n? ntpd.service - Network Time Service\n   Loaded: loaded (\/usr\/lib\/systemd\/system\/ntpd.service; enabled; vendor preset: disabled)\n   Active: inactive (dead) since Mon 2021-12-20 00:00:15 JST; 3min 35s ago\nsystemd&#91;1]: Stopping Network Time Service...\nntpd&#91;10812]: ntpd exiting on signal 15\nsystemd&#91;1]: Stopped Network Time Service.\n\nsystemd&#91;1]: Stopping Network Time Service...\nntpd&#91;10812]: ntpd exiting on signal 15\nsystemd&#91;1]: Stopped Network Time Service.<\/sub><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\uff12\uff0e\u30b5\u30fc\u30d3\u30b9\u8d77\u52d5<\/h3>\n\n\n\n<p class=\"has-text-align-left\">\u8d77\u52d5\u5f8c\u306b\u3001NTP\u30b5\u30fc\u30d3\u30b9\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u78ba\u8a8d\u2025<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><sub># Commnad : systemctl start ntpd &amp;&amp; systemctl status ntpd<\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"commnad--timedatectl-\u629c\u7c8b-1\">Commnad : timedatectl \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>      Local time: Mon 2021-12-20 00:10:16 JST\n  Universal time: Sun 2021-12-19 15:10:16 UTC\n        RTC time: Sun 2021-12-19 15:10:16\n       Time zone: Asia\/Tokyo (JST, +0900)\n     NTP enabled: yes\nNTP synchronized: yes<\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"commnad--ntpq--pn-\u629c\u7c8b-1\">Commnad : ntpq -pn \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>st t when poll reach   delay   offset  jitter\n=============================================\n 5 l  18h   64    0    0.000    0.000   0.000\n 3 u   16   64  377    0.142  6313381 3374644\n 3 u   24   64  377    0.150  6313381 2386233\n 3 u   20   64  377    0.125  6313381 3374644<\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u3053\u308c\u3058\u3083\u306a\u304a\u3089\u306a\u3044<\/h4>\n\n\n\n<p class=\"has-text-align-left\">Time zone\u306f\u3001Asia\/Tokyo \u3068\u306a\u3063\u3066\u3044\u308b\u304c\u3001Offsset \u3068 Jitter \u6570\u5024\u304c\u306a\u304a\u3063\u3066\u306a\u3044\u2025<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uff13\uff0eNTP\u30b5\u30fc\u30d0\u306b\u540c\u671f<\/h3>\n\n\n\n<p class=\"has-text-align-left\">NTP\u30b5\u30fc\u30d0\u306b\u540c\u671f\u5f8c\u3001hwclock (Hardware Clock) \u3092\u78ba\u8a8d\u3057\u307e\u3059<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><sub># Command : ntpdate -u &lt;NTP Server#1\/2\/3> <\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"command--date-sudo-hwclock---show-\u629c\u7c8b\">Command : date; sudo hwclock &#8211;show \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>Mon Dec 20 17:52:16 JST 2021\nMon 20 Dec 2021 12:20:03 AM JST  -0.423311 seconds<\/sub><\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code><sub># Command : sudo hwclock --systohc<\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"command--sudo-hwclock---show-\u629c\u7c8b\">Command : sudo hwclock &#8211;show \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>Mon 20 Dec 2021 05:54:00 PM JST  -0.938479 seconds<\/sub><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\uff14\uff0e\u518d\u78ba\u8a8d<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"commnad--timedatectl-\u629c\u7c8b-2\">Commnad : timedatectl \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>      Local time: Mon 2021-12-20 12:46:31 EST\n  Universal time: Mon 2021-12-20 17:46:31 UTC\n        RTC time: Mon 2021-12-20 17:46:31\n       Time zone: America\/New_York (EST, -0500)\n     NTP enabled: yes\nNTP synchronized: yes<\/sub><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"commnad--ntpq--pn-\u629c\u7c8b-2\">Commnad : ntpq -pn \u629c\u7c8b<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code><sub>st t when poll reach   delay   offset  jitter\n=============================================\n 5 l   61   64  377    0.000    0.000   0.000\n 3 u   40   64  377    0.150   -1.791   0.916\n 3 u   56   64  377    0.148   -2.127   0.743\n 3 u   50   64  377    0.194   -2.527   0.611<\/sub><\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u5909\u66f4\u5b8c\u4e86<\/h2>\n\n\n\n<p class=\"has-text-align-center\">\u5b8c\u5168\u306b\u30df\u30b9\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u304c\u3001\u518d\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306a\u304f\u7121\u4e8b\u306b<br>\u30bf\u30a4\u30e0\u30b6\u30fc\u30f3\u3092\u65e5\u672c\u306b\u5909\u66f4\u3067\u304d\u305f\uff01<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"388\" height=\"498\" src=\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/23880339-2.png\" alt=\"\" class=\"wp-image-3450\" style=\"aspect-ratio:0.7791164658634538;width:266px;height:auto\" srcset=\"https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/23880339-2.png 388w, https:\/\/engineer-chanpu.blog\/wp-content\/uploads\/2023\/10\/23880339-2-234x300.png 234w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">\u304a\u308f\u308a<\/h2>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u69cb\u7bc9\u624b\u9806\u304c\u6f0f\u308c\u3066\u3057\u307e\u3063\u305f \u65b0\u3057\u304f\u59cb\u3081\u305f\u30b5\u30a4\u30c8\u306e\u521d\u671f\u69cb\u7bc9\u3067CentOS\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3057\u3066\u3044\u308b\u6700\u4e2d\u3001\u3042\u308b\u3053\u3068\u306b\u6c17\u304c\u3064\u304d\u307e\u3057\u305f\u3002Undercloud Hypervisor (OpenStack \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30cd\u30fc\u30e0) \u306eNTP\u78ba\u8a8d\u3057\u305f\u3089\u3001\u3042\u308c\u3001\u4f55\u304b\u304c\u304a\u304b\u3057\u3044\uff1f Commnad : timedatectl \u629c\u7c8b Commnad : ntpq -pn \u629c\u7c8b \u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u304c\u65e5\u672c\u3058\u3083\u306a\u304f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30a2\u30e1\u30ea\u30ab\u306b\u306a\u3063\u3066\u3044\u308b\u3002 date\u30b3\u30de\u30f3\u30c9\u3067\u78ba\u8a8d\u3057\u305f\u3089\u3001\u306a\u3093\u3068\u6642\u5dee\u307c\u3051\u3057\u3066\u308b\u307f\u305f\u3044\u306b\u6642\u9593\u304c\u5408\u308f\u306a\u3044\u3002\u3055\u3089\u306bntp\u306eoffset\u3001\u3053\u306e\u6570\u5b57\u3001\u898b\u305f\u3053\u3068\u306a\u3044\u3093\u3060\u3051\u3069\u2026 -337428\uff1f\u7570\u5e38\u3067\u3042\u3063\u305f\u3002 \u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u5909\u66f4\u4f5c\u696d \uff11\uff0e\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3092\u65e5\u672c\u6642\u9593\u306b\u5909\u66f4 \u307e\u305a\u3001Time zone \u8a2d\u5b9a\u3092\u65e5\u672c\u6642\u9593\u306b\u5909\u66f4 \uff12\uff0e\u30b5\u30fc\u30d3\u30b9\u8d77\u52d5 \u8d77\u52d5\u5f8c\u306b\u3001NTP\u30b5\u30fc\u30d3\u30b9\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u78ba\u8a8d\u2025 Commnad : timedatectl \u629c\u7c8b Commnad &#8230;<\/p>\n","protected":false},"author":1,"featured_media":4159,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[131],"class_list":["post-3611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech-notes","tag-linux"],"_links":{"self":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/3611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3611"}],"version-history":[{"count":70,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/3611\/revisions"}],"predecessor-version":[{"id":6421,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/posts\/3611\/revisions\/6421"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=\/wp\/v2\/media\/4159"}],"wp:attachment":[{"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineer-chanpu.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}