{"id":2839,"date":"2020-04-22T22:02:45","date_gmt":"2020-04-22T13:02:45","guid":{"rendered":"https:\/\/blog.boxcorea.com\/wp\/?p=2839"},"modified":"2024-09-09T12:56:49","modified_gmt":"2024-09-09T03:56:49","slug":"%eb%a6%ac%eb%88%85%ec%8a%a4-timedatectl","status":"publish","type":"post","link":"https:\/\/blog.boxcorea.com\/wp\/archives\/2839","title":{"rendered":"\ub9ac\ub205\uc2a4 timedatectl"},"content":{"rendered":"<p>\ub9ac\ub205\uc2a4\uc5d0\uc11c \ub0a0\uc9dc\/\uc2dc\uac04\uc744 \uc870\uc815\ud558\ub294 \ubc29\ubc95\uc5d0\ub294 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\ub2e4.<\/p>\n<p>\uc644\uc804 \uc218\ub3d9 \ubc29\uc2dd: date \uba85\ub839\uc5b4\ub85c \ub0a0\uc9dc \uc2dc\uac04\uc744 \uc870\uc815\ud558\uc600\uc74c.<br \/>\n\uc61b\ub0a0(?) \ubc29\uc2dd: ntpdate, rdate \ub85c time \uc11c\ubc84\uc640 \uc2dc\uac04 \ub3d9\uae30\ud654.<br \/>\n\ucd5c\uc2e0(?) \ubc29\uc2dd: timedatectl<\/p>\n<p>1. Ubuntu 18.04 \uc5d0\uc11c timedatectl \uc0ac\uc6a9\ud558\uae30.<\/p>\n<p>\uc804\ud1b5\uc801\uc778 \uba85\ub839\uc5b4\uc778 date \uba85\ub839\uc5b4\ub85c \ud604\uc7ac \ub0a0\uc9dc\/\uc2dc\uac04\uc744 \ud655\uc778 \ud560 \uc218 \uc788\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ date\r\nTue Apr 21 10:57:03 KST 2020<\/pre>\n<p>\ud558\uc9c0\ub9cc, timedatectl \uba85\ub839\uc73c\ub85c\ub294 \ud604\uc7ac \ub0a0\uc9dc, \uc2dc\uac04, \ud0c0\uc784\uc874, \ud0c0\uc784\uc11c\ubc84\uc640\uc758 \ub3d9\uae30\ud654 \uc5ec\ubd80\ub97c \ubaa8\ub450 \ud655\uc778 \uac00\ub2a5\ud558\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ timedatectl\r\n                      Local time: Tue 2020-04-21 10:57:07 KST\r\n                  Universal time: Tue 2020-04-21 01:57:07 UTC\r\n                        RTC time: n\/a\r\n                       Time zone: Asia\/Seoul (KST, +0900)\r\n       System clock synchronized: yes\r\nsystemd-timesyncd.service active: yes\r\n                 RTC in local TZ: no<\/pre>\n<p><!--more--><\/p>\n<p>timezone \ubcc0\uacbd\uc744 \uc704\ud574\uc11c timezone\uc744 \ud655\uc778\ud574 \ubcf4\uba74,<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ timedatectl list-timezones\r\nAfrica\/Abidjan\r\n...\r\nEurope\/Moscow\r\n...\r\nUTC<\/pre>\n<p>timezone\uc744 \ubaa8\uc2a4\ucf54\ubc14\ub85c \ubcc0\uacbd\ud574 \ubcf8\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ sudo timedatectl set-timezone Europe\/Moscow\r\n$ timedatectl\r\n                      Local time: Tue 2020-04-21 05:04:28 MSK\r\n                  Universal time: Tue 2020-04-21 02:04:28 UTC\r\n                        RTC time: n\/a\r\n                       Time zone: Europe\/Moscow (MSK, +0300)\r\n       System clock synchronized: yes\r\nsystemd-timesyncd.service active: yes\r\n                 RTC in local TZ: no<\/pre>\n<p>time\uc11c\ubc84\uc640 \ub0a0\uc9dc \uc2dc\uac04 \ub3d9\uae30\ud654\ub97c \ud558\uc9c0 \uc54a\uc73c\ub824\uba74,<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ sudo timedatectl set-ntp false\r\nsnowffox@web:~$ timedatectl\r\n                      Local time: Tue 2020-04-21 11:11:31 KST\r\n                  Universal time: Tue 2020-04-21 02:11:31 UTC\r\n                        RTC time: n\/a\r\n                       Time zone: Asia\/Seoul (KST, +0900)\r\n       System clock synchronized: yes\r\nsystemd-timesyncd.service active: no\r\n                 RTC in local TZ: no<\/pre>\n<p>\uc704\uc5d0\uc11c systemd-timesyncd.service active \ubd80\ubd84\uc774 yes\uc5d0\uc11c no\ub85c \ubcc0\uacbd\ub41c \uac83\uc774 \ubcf4\uc778\ub2e4.<\/p>\n<p>\uc774\uc81c \uc2dc\uac04\/\ub0a0\uc9dc\ub97c \ubcc0\uacbd\ud574 \ubcf8\ub2e4.<\/p>\n<p>\uc2dc\uac04 \ubcc0\uacbd.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ sudo timedatectl set-time 10:00:00<\/pre>\n<p>\ub0a0\uc9dc \ubcc0\uacbd.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ sudo timedatectl set-time 2020-04-22<\/pre>\n<p>\ubcc0\uacbd\ud6c4 \ub0a0\uc9dc\/\uc2dc\uac04\uc744 \ud655\uc778\ud574 \ubcf4\uba74 \uc2dc\uc2a4\ud15c \uc2dc\uac04\uacfc\ub3c4 \ub3d9\uae30\ud654\uac00 \ub418\uc9c0 \uc54a\uc740\uac83\uc774 \ubcf4\uc778\ub2e4.(system clock synchronized) <\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ timedatectl\r\n                      Local time: Wed 2020-04-22 00:00:04 KST\r\n                  Universal time: Tue 2020-04-21 15:00:04 UTC\r\n                        RTC time: n\/a\r\n                       Time zone: Asia\/Seoul (KST, +0900)\r\n       System clock synchronized: no\r\nsystemd-timesyncd.service active: no\r\n                 RTC in local TZ: no<\/pre>\n<p>\ub0a0\uc9dc\/\uc2dc\uac04 \ub3d9\uc2dc \ubcc0\uacbd\ub3c4 \uac00\ub2a5\ud558\ub2e4.<\/p>\n<p>\uc774\uc81c \ub2e4\uc2dc \ud0c0\uc784\uc11c\ubc84\uc640 \ub3d9\uae30\ud654\ud558\uba74,<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" >$ sudo timedatectl set-ntp true\r\n$ timedatectl\r\n                      Local time: Tue 2020-04-21 11:16:02 KST\r\n                  Universal time: Tue 2020-04-21 02:16:02 UTC\r\n                        RTC time: n\/a\r\n                       Time zone: Asia\/Seoul (KST, +0900)\r\n       System clock synchronized: yes\r\nsystemd-timesyncd.service active: yes\r\n                 RTC in local TZ: no\r\n<\/pre>\n<p>2. CentOS 7 minimal \uc124\uce58 \ubc84\uc804\uc5d0\uc11c timedatectl <\/p>\n<p>Ubuntu18.04\uc640\ub294 \ub2e4\ub974\uac8c NTP enabled \ud56d\ubaa9\uc774 \ubcf4\uc778\ub2e4.<\/p>\n<p>CentOS7 timedatectl<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># timedatectl\r\n      Local time: Tue 2020-04-21 11:28:09 KST\r\n  Universal time: Tue 2020-04-21 02:28:09 UTC\r\n        RTC time: Tue 2020-04-21 02:28:35\r\n       Time zone: Asia\/Seoul (KST, +0900)\r\n     NTP enabled: n\/a<\/pre>\n<p>\ud0c0\uc784\uc11c\ubc84\uc640 \ub3d9\uae30\ud654\ud558\ub824\uace0\ud558\ub2c8, \uc544\ub798\uc640\uac19\uc740 \uc624\ub958\uac00 \ubc1c\uc0dd\ud55c\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># timedatectl set-ntp true\r\nFailed to set ntp: NTP not supported.<\/pre>\n<p>ntpd\ub97c \uc2e4\ud589\ud588\uc744\ub54c, <\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># systemctl start ntpd\r\nFailed to start ntpd.service: Unit not found.<\/pre>\n<p>ntpd\uac00 \uc124\uce58\ub418\uc5b4 \uc788\uc9c0 \uc54a\uc73c\ubbc0\ub85c, \uc124\uce58\ud574\uc900\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># yum install ntp<\/pre>\n<p>\/etc\/ntp.conf \uc5d0 \uc0ac\uc6a9\ud560 ntp \uc11c\ubc84\ub97c \uc124\uc815\ud55c\ub2e4.(\uc5ec\uae30\uc11c\ub294 time.nist.gov\ub97c \ucd5c\uc6b0\uc120\uc21c\uc704 time \uc11c\ubc84\ub85c \uc124\uc815)<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># vi \/etc\/ntp.conf\r\n...\r\n# Please consider joining the pool (http:\/\/www.pool.ntp.org\/join.html).\r\nserver time.nist.gov iburst\r\n#server 0.centos.pool.ntp.org iburst\r\nserver 1.centos.pool.ntp.org iburst\r\nserver 2.centos.pool.ntp.org iburst\r\nserver 3.centos.pool.ntp.org iburst\r\n...<\/pre>\n<p>ntpd \uc11c\ube44\uc2a4\ub97c \uc2e4\ud589\ud55c\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># systemctl start ntpd<\/pre>\n<p>\uc7ac\ubd80\ud305\uc2dc\uc5d0\ub3c4 ntpd\uac00 \uc2e4\ud589\ub418\ub3c4\ub85d \ud55c\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># systemctl enable ntpd<\/pre>\n<p>ntpq \uba85\ub839\uc73c\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654\ub97c \ud655\uc778.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># ntpq -p\r\n     remote           refid      st t when poll reach   delay   offset  jitter\r\n==============================================================================\r\n time-d-b.nist.g .NIST.           1 u    2   64    1  179.859   -6.168   0.000\r\n send.mx.cdnetwo 216.239.35.8     2 u    1   64    1    3.071   -2.097   0.000<\/pre>\n<p>\uc774\uc81c, datetimectl \uba85\ub839\uc73c\ub85c \ud655\uc778\ud574 \ubcf4\uba74, \uc2dc\uac04\uc774 \ub3d9\uae30\ud654 \ub418\uace0 \uc788\uc74c\uc744 \ubcfc \uc218 \uc788\ub2e4.<\/p>\n<pre class=\"lang:sh highlight:0 decode:true \" ># timedatectl\r\n      Local time: Tue 2020-04-21 11:42:12 KST\r\n  Universal time: Tue 2020-04-21 02:42:12 UTC\r\n        RTC time: Tue 2020-04-21 02:42:12\r\n       Time zone: Asia\/Seoul (KST, +0900)\r\n     NTP enabled: yes\r\nNTP synchronized: yes\r\n RTC in local TZ: no\r\n      DST active: n\/a<\/pre>\n<p>ubuntu \uc640 centos\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654\ubd80\ubd84\uc774 ubuntu\ub294 systemd-timesyncd.service, centos\ub294 ntp\ub97c \uc0ac\uc6a9\ud558\ub294 \ucc28\uc774 \ub9d0\uace0 \ud2b9\ubcc4\ud55c \ucc28\uc774\uc810\uc740 \uc5c6\uc5b4\ubcf4\uc778\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ub9ac\ub205\uc2a4\uc5d0\uc11c \ub0a0\uc9dc\/\uc2dc\uac04\uc744 \uc870\uc815\ud558\ub294 \ubc29\ubc95\uc5d0\ub294 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\ub2e4. \uc644\uc804 \uc218\ub3d9 \ubc29\uc2dd: date \uba85\ub839\uc5b4\ub85c \ub0a0\uc9dc \uc2dc\uac04\uc744 \uc870\uc815\ud558\uc600\uc74c. \uc61b\ub0a0(?) \ubc29\uc2dd: ntpdate, rdate \ub85c time \uc11c\ubc84\uc640 \uc2dc\uac04 \ub3d9\uae30\ud654. \ucd5c\uc2e0(?) \ubc29\uc2dd: timedatectl 1. Ubuntu 18.04 \uc5d0\uc11c timedatectl \uc0ac\uc6a9\ud558\uae30. \uc804\ud1b5\uc801\uc778 \uba85\ub839\uc5b4\uc778 date \uba85\ub839\uc5b4\ub85c \ud604\uc7ac \ub0a0\uc9dc\/\uc2dc\uac04\uc744 \ud655\uc778 \ud560 \uc218 \uc788\ub2e4. $ date Tue Apr 21 10:57:03 KST 2020 \ud558\uc9c0\ub9cc, timedatectl \uba85\ub839\uc73c\ub85c\ub294 \ud604\uc7ac &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/blog.boxcorea.com\/wp\/archives\/2839\">Continue reading<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[4],"tags":[1285,697,698,695,696,13,1120],"class_list":["post-2839","post","type-post","status-publish","format-standard","hentry","category-linux","tag-centos","tag-centos-","tag-linux-timedatectl","tag-timedatectl","tag-ubuntu-","tag-13","tag-1120","item-wrap"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\ub9ac\ub205\uc2a4 timedatectl - Blog-boxcorea<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.boxcorea.com\/wp\/archives\/2839\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\ub9ac\ub205\uc2a4 timedatectl - Blog-boxcorea\" \/>\n<meta property=\"og:description\" content=\"\ub9ac\ub205\uc2a4\uc5d0\uc11c \ub0a0\uc9dc\/\uc2dc\uac04\uc744 \uc870\uc815\ud558\ub294 \ubc29\ubc95\uc5d0\ub294 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\ub2e4. \uc644\uc804 \uc218\ub3d9 \ubc29\uc2dd: date \uba85\ub839\uc5b4\ub85c \ub0a0\uc9dc \uc2dc\uac04\uc744 \uc870\uc815\ud558\uc600\uc74c. \uc61b\ub0a0(?) \ubc29\uc2dd: ntpdate, rdate \ub85c time \uc11c\ubc84\uc640 \uc2dc\uac04 \ub3d9\uae30\ud654. \ucd5c\uc2e0(?) \ubc29\uc2dd: timedatectl 1. 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