{"id":11212,"date":"2020-12-29T20:07:02","date_gmt":"2020-12-29T11:07:02","guid":{"rendered":"https:\/\/mini.jellypo.pe.kr\/wp\/?p=11212"},"modified":"2021-02-06T12:49:40","modified_gmt":"2021-02-06T03:49:40","slug":"%ec%84%9c%eb%b2%84-%ec%8b%9c%ea%b0%84-%eb%8f%99%ea%b8%b0%ed%99%94-%ec%a0%9c%eb%b0%9c-21%ec%84%b8%ea%b8%b0%ec%97%94-rdate-%ec%93%b0%ec%a7%80-%eb%a7%90%ec%9e%90","status":"publish","type":"post","link":"https:\/\/mini.jellypo.pe.kr\/wp\/?p=11212","title":{"rendered":"\uc11c\ubc84 \uc2dc\uac04 \ub3d9\uae30\ud654: \uc81c\ubc1c 21\uc138\uae30\uc5d4 rdate \uc4f0\uc9c0 \ub9d0\uc790"},"content":{"rendered":"\n<figure class=\"wp-block-pullquote\"><blockquote><p>\ud55c\uc904 \uc694\uc57d: \uc2dc\uac04 \ub3d9\uae30\ud654\ub294 \uac04\ub2e8\ud558\uc9c0 \uc54a\ub2e4.<\/p><cite>\ucd5c\uc18c\ud55c NTP \ud504\ub85c\ud1a0\ucf5c \uc0ac\uc6a9<\/cite><\/blockquote><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uae00\uc744 \uc4f0\ub294 \uc774\uc720\ub294&#8230; 2020\ub144 12\uc6d4 \ud604 \uc2dc\uc810\uc5d0\uc11c rdate(\uc640 cron)\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654 \ud558\uaca0\ub2e4\ub294 \ucda9\uaca9\uc801\uc778 \ube14\ub85c\uadf8 \uae00\uc744 \ubd10\uc11c&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uacb0\ub860\ubd80\ud130 \ub9d0\ud558\uba74 NTP \ud504\ub85c\ud1a0\ucf5c \uc9c0\uc6d0\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc73c\ub85c \ub3d9\uae30\ud654 \ud558\uc790. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/mini.jellypo.pe.kr\/wp\/?p=11149\">NTP \uc124\uc815 \ubc0f \uc6b4\uc601 \uc8fc\uc758\uc810<\/a> \uba3c\uc800 \uc368\ub454 \uae00 \ucc38\uace0\ud560 \uac83.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2dc\uac04 \ubcf4\uc815 \ubc29\ubc95<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">step: \uc989\uc2dc \uc2dc\uac04 \ubcf4\uc815<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">slew: \uc2dc\uacc4 \ud68c\uc804 \uc18d\ub3c4\ub97c \uc870\uc808\ud558\uc5ec \uc2dc\uac04 \ubcf4\uc815. <a href=\"https:\/\/twitter.com\/senokay\/status\/1089761860377706496\">\ub2e8\uc870\uc99d\uac00 \uc2dc\uacc4<\/a> Monotonic clock.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2dc\uac04 \ub3d9\uae30\ud654 \ud504\ub85c\ud1a0\ucf5c \uc885\ub958<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tools.ietf.org\/html\/rfc738\">Time Server<\/a> udp\/37 rdate \ub4f1\uc774 \uc0ac\uc6a9\ud558\ub294 \uc2dc\uac04 \uc11c\ube44\uc2a4. \uc815\ud655\ud558\uc9c0\ub3c4 \uc54a\uace0 \uac1c\uc778 \uc2dc\uc2a4\ud15c\uc774\ub354\ub77c\ub3c4 \uc4f0\uc9c0 \ub9d0\uc790&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tools.ietf.org\/html\/rfc5905\">NTP<\/a> udp\/123 \uc2dc\uac04 \ub3d9\uae30\ud654 \ud45c\uc900 \ud504\ub85c\ud1a0\ucf5c, \uc708\ub3c4, \ub9ac\ub205\uc2a4 \ub3d9\uc77c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tools.ietf.org\/html\/rfc4330\">SNTP<\/a> udp\/123 NTP\uc758 \uc11c\ube0c\uc14b, NTP\uc640 \ub3d9\uc77c \ud3ec\ud2b8 \uc0ac\uc6a9. 1-50ms \uc815\ub3c4\uc758 \uc815\ud655\ub3c4<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tools.ietf.org\/html\/rfc8173\">PTP<\/a> Precision Time Protocol, NTP\ubcf4\ub2e4 \ub354 \uc815\ubc00\ud55c \ud504\ub85c\ud1a0\ucf5c. chrony \uc5d0\uc11c \ubbf8\uc9c0\uc6d0, \uc9c0\uc6d0 \uacc4\ud68d \uc5c6\uc74c. <a href=\"https:\/\/www.redhat.com\/en\/blog\/combining-ptp-ntp-get-best-both-worlds\">\ucc38\uace0#1<\/a>, <a href=\"https:\/\/chrony.tuxfamily.org\/faq.html#_does_chrony_support_ptp\">\ucc38\uace0#2<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uacfc\ud559, \uae08\uc735 \uc218\uc900\uc5d0\uc11c \uc0ac\uc6a9&#8230; \ucee4\ub110\uacfc \ud558\ub4dc\uc6e8\uc5b4\uac00 \uc9c0\uc6d0\ub418\uc5b4\uc57c \uc0ac\uc6a9 \uac00\ub2a5.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tools.ietf.org\/html\/draft-ietf-ntp-using-nts-for-ntp-28\">NTS <\/a>Network Time Security for the Network Time Protocol. chrony 4.0 \ubd80\ud130 \uc9c0\uc6d0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2dc\uac04\ub3d9\uae30\ud654 \ud504\ub85c\uadf8\ub7a8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">rdate udp\/37 \uc0ac\uc6a9, xinetd \ub4f1\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \ub2e8\uc21c \uc2dc\uac04 \ubcc0\uacbd \ud234. <strong>\uc4f0\uba74 \uc548\ub41c\ub2e4.<\/strong> step \ubc29\uc2dd\uc73c\ub85c\ub9cc \ubcf4\uc815\ud558\uae30 \ub54c\ubb38.<br>systemd-timesyncd systemd\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \uc2dc\uac04 \ub3d9\uae30\ud654 \ub370\ubaac. SNTP \uad6c\ud604\uccb4\uc778\ub370 \uad6c\ud604\uc774 \uc57d\uac04 \ub2e4\ub984. \uc624\ucc28 100 ms \uc815\ub3c4 \ub41c\ub2e4\uace0.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ntpd NTP \uad6c\ud604\uccb4 CentOS 6\uae4c\uc9c0 \uae30\ubcf8 \uc2dc\uac04 \ub3d9\uae30\ud654 \ub370\ubaac.<br><a href=\"https:\/\/chrony.tuxfamily.org\/\">chrony <\/a>ntpd\ubcf4\ub2e4 \uac1c\uc120\ub41c \uad6c\ud604\uccb4. \ubcf4\uc548\uba74\uc5d0\uc11c \uac00\uc7a5 \uc88b\ub2e4\ub294 \ud3c9\uac00. CentOS 7\ubd80\ud130 \uae30\ubcf8 \uc2dc\uac04 \ub3d9\uae30\ud654 \ub370\ubaac. <a href=\"https:\/\/chrony.tuxfamily.org\/comparison.html\">NTP \uad6c\ud604\uccb4 \ube44\uad50<\/a><br><a href=\"https:\/\/docs.microsoft.com\/ko-kr\/windows-server\/networking\/windows-time-service\/windows-time-service-tools-and-settings\">w32tm<\/a> \uc708\ub3c4 \uc2dc\uac04\ub3d9\uae30\ud654 \ud234. Windows Server \uba54\ub274\uc5bc\uc744 \ubcf4\uba74 \uc54c\uaca0\uc9c0\ub9cc&#8230; \uc815\ud655\ub3c4\uac00 2016\uc5d0\uc11c\uc57c \uc88b\uc544\uc84c\ub2e4(\uc544\ub798 \uc774\ubbf8\uc9c0 \ucc38\uc870)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/mini.jellypo.pe.kr\/wp\/wp-content\/uploads\/2020\/12\/image.png\"><img loading=\"lazy\" decoding=\"async\" width=\"598\" height=\"215\" src=\"https:\/\/mini.jellypo.pe.kr\/wp\/wp-content\/uploads\/2020\/12\/image.png\" alt=\"\" class=\"wp-image-11213\" srcset=\"https:\/\/mini.jellypo.pe.kr\/wp\/wp-content\/uploads\/2020\/12\/image.png 598w, https:\/\/mini.jellypo.pe.kr\/wp\/wp-content\/uploads\/2020\/12\/image-300x108.png 300w\" sizes=\"auto, (max-width: 598px) 100vw, 598px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">rdate\uc640 ntp(chrony)\uc758 \ucc28\uc774\uc810<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>rdate \uc2e4\ud589 \uc2dc \uc11c\ubc84\ucabd \uc2dc\uac04\uc744 \ubc14\ub85c \uc801\uc6a9. \uc2dc\uac04 \uc11c\ubc84 &#8211; \ud074\ub77c\uc774\uc5b8\ud2b8 60\ucd08\uc758 \uc624\ucc28\uac00 \uc788\uc744 \ub54c 60\ucd08\ub97c \uc989\uc2dc \uac74\ub108 \ub6f4\ub2e4.<br>\uadf8\ub798\uc11c \uc2dc\uac04\uc774 \ube60\ub978  \uc7a5\ube44\uc758 \uc2dc\uac04 \ubcf4\uc815\uc744 rdate\ub85c \ud558\uba74 (\uc7a5\ube44 \uad00\uc810\uc5d0\uc11c)\uc2dc\uac04\uc774 \uacfc\uac70\ub85c \ub3cc\uc544\uac00\ub294 \ubb38\uc81c\uac00 \uc788\uc74c -&gt; DB\uc758 \uacbd\uc6b0 \uacfc\uac70 \uc2dc\uac04\uc73c\ub85c \ub370\uc774\ud130\uac00 \uc313\uc774\uba74 DB \ud14c\uc774\ube14\uc774 \uae68\uc9c8 \uc218 \uc788\uc74c.<\/li><li>ntpd(chrony)\ub294 \uc624\ucc28 \uc2dc\uac04\uc744 \ube60\ub974\uac8c \ud639\uc740 \ub290\ub9ac\uac8c \uc2dc\uac04\uc744 \ub3cc\ub824\uc11c \ub9de\ucdb0(slewing) rdate\uc640 \uac19\uc740 \ubb38\uc81c \ubc1c\uc0dd\ud558\uc9c0 \uc54a\uc74c.<ul><li>\uc2dc\uac04 \uc624\ucc28\uac00 \ub108\ubb34 \ud074 \ub54c\ub294 NTP \uad6c\ud604\uccb4\ub3c4 step \ubc29\uc2dd\uc73c\ub85c \uc2dc\uac04 \ubcf4\uc815.<\/li><\/ul><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2dc\uac04<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">1\ucd08. 1\ucd08\uc758 \uc815\uc758\uac00 \uc9c0\uc18d\uc801\uc73c\ub85c \ubc14\ub00c\uc5c8\uc74c. https:\/\/ko.wikipedia.org\/wiki\/%EC%B4%88_(%EC%8B%9C%EA%B0%84)#cite_note-1<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uc9c0\uad6c \uc790\uc804(\ud558\ub8e8)\uc5d0 \uc758\ud55c \ud3c9\uade0 \ud0dc\uc591\uc77c\uc758 1\/86,400 \uc73c\ub85c \uc815\uc758<ul><li>\uc9c0\uad6c\uc758 \uc790\uc804\uc774 \ubd88\uaddc\uce59\ud568. \uacc4\uc18d \ub290\ub824\uc9c0\uace0 \uc788\uc73c\uba70, \ud070 \uc9c0\uc9c4\uc5d0\ub3c4 \uc601\ud5a5 \ubc1b\uc544 \uc815\ud655\ub3c4 \ubcf4\uc7a5\uc774 \uc548\ub428.<ul><li>2021-01-09 \uc9c0\uad6c \uc790\uc804\uc774 <strong>\ube68\ub77c\uc838\uc11c<\/strong> \uc5ed\uc724\ucd08(\uc74c\uc758 \uc724\ucd08) \uc801\uc6a9 \uac80\ud1a0 \ud544\uc694\ud560 \uc218 \uc788\ub2e4\ub294 <a href=\"http:\/\/nownews.seoul.co.kr\/news\/newsView.php?id=20210106601008\">\ub274\uc2a4<\/a>. <\/li><li>\uc9c0\uad6c \uc628\ub09c\ud654\ub85c \ube59\ud558\uac00 \ub179\uc544 \uc9c0\uad6c \uc9c8\ub7c9 \uc7ac\ubd84\ubc30\uac00 \ubc1c\uc0dd\ud55c\uac8c \uc544\ub2d0\uae4c \ud558\ub294 \uc5f0\uad6c\uacb0\uacfc\uac00 2015\ub144 \uacbd\uc5d0 \uc788\uc5c8\uc74c.<\/li><\/ul><\/li><\/ul><\/li><li>1956\ub144, 1900\ub144 1\uc6d4 0\uc77c 12\uc2dc \uae30\uc900 \ud0dc\uc591\ub144\uc758 1\/31556925.9747, \uc790\uc804\uc5d0\uc11c \uacf5\uc804\uc73c\ub85c \uae30\uc900 \ubcc0\uacbd<\/li><li>1967\ub144, \uc6d0\uc790 \uc2dc\uacc4 \ubc1c\uba85 \ub418\uc5b4 \uc138\uc298-133 \uc6d0\uc790\uc758 1\ucd08\uac04 \uc9c4\ub3d9 \uc218 (\ubcf4\uc870\uc801\uc73c\ub85c \ub8e8\ube44\ub4d0 \uc6d0\uc790)<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8 \uc678 \uc2dc\uac04 \uad00\ub828\ud574 \uc54c\uba74 \uc88b\uc740 \uac83<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>2020\ub144 \ud604\uc7ac\uae4c\uc9c0 \uac00\uc7a5 \uc815\ubc00\ud55c \uc2dc\uac04(\ucd08) \uce21\uc815 \uc7a5\uce58\ub294 &#8216;\uad11\uaca9\uc790 \uc2dc\uacc4(or \uad11\uc2dc\uacc4)&#8217;.<ul><li>\uac00\uc7a5 \uc815\ubc00\ud558\uc9c0\ub9cc \uc544\uc9c1 \ud45c\uc900 \uc2dc\uac04 \uae30\uc900\uc73c\ub85c \ucc44\ud0dd\ub418\uc5b4 \uc0ac\uc6a9 \uc911\uc740 \uc544\ub2cc \ub4ef.<\/li><\/ul><\/li><li>\uace0\ub3c4\uc5d0 \ub530\ub77c \uc2dc\uac04\uc774 \ub2e4\ub974\uac8c \ud750\ub984(\uc911\ub825 \uc601\ud5a5 \ucc28\uc774 \ubc1c\uc0dd\ud558\uae30 \ub54c\ubb38)<\/li><li>\uc724\ucd08(<a href=\"https:\/\/en.wikipedia.org\/wiki\/Leap_second\">Leap second<\/a>): \uc6d0\uc790\uc2dc\uacc4\uc640 \ud0dc\uc591\uc2dc\uac04\uc758 \uc624\ucc28 \ubcf4\uc815\ud558\uae30 \uc704\ud568<ul><li><a href=\"https:\/\/developers.google.com\/time\/smear\">leap smearing<\/a><\/li><\/ul><\/li><li>UTC \uc138\uacc4 \ud611\uc815\uc2dc, KST\ub294 UTC +9h<\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Epoch_(computing)\">epoch<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">IT \uc778\ud504\ub77c\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc778\uc99d \uc2dc\uc2a4\ud15c\uc774\ub098 \ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \ubaa8\ub4e0 \uae30\uc900\uc740 \uc2dc\uac04\uc774 \ub418\uae30 \ub54c\ubb38\uc5d0 \uac01 \uc2dc\uc2a4\ud15c\uac04 \uc2dc\uac04 \ucc28\uc774\uac00 \ubc1c\uc0dd\ud558\uba74 \uc2e0\ub8b0\ud560 \uae30\uc900\uc774 \uc5c6\uc5b4\uc9c0\ub294 \uc0c1\ud669\uc774 \ub41c\ub2e4. \uadf8\ub807\ub2e4\uba74 \uc2dc\uac04 \uc624\ucc28\ub97c \ubaa8\ub4e0 \ub2e8\uc704\uc5d0\uc11c &#8216;0&#8217;\ub85c \ud560 \uc218 \uc788\ub294\uac00?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2dc\uac04 \uc624\ucc28 \uc81c\ub85c: \ub9e4\uc6b0 \uc5b4\ub835\ub2e4&#8230; \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd88\uac00\ub2a5. NTP \uac00 \uc2e4\uc81c \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc11c \uc798 \ub3d9\uc791\ud55c\ub2e4\uace0 \ubcf4\uc7a5\ud560 \uc218 \uc788\ub294 \uc0ac\ub78c\/\ub2e8\uccb4\ub294 \uc544\ubb34\ub3c4 \uc5c6\uc74c. \ub2e4\ub9cc \uac19\uc740 \uc11c\ube44\uc2a4 \uadf8\ub8f9\ub07c\ub9ac \ube44\uc2b7\ud55c \uc2dc\uac04 \uc720\uc9c0\ud558\uc5ec \uc11c\ube44\uc2a4 \ub370\ubaac\uc5d0\uc11c  \ub85c\uadf8\uac00 \ub4a4\uc11e\uc774\uc9c0 \uc54a\ub294 \uc815\ubc00\ub3c4\ub97c \ubaa9\ud45c\ub85c \ud574\uc57c. NTP \ud504\ub85c\ud1a0\ucf5c\uc740 \uc5b4\ub514\uae4c\uc9c0\ub098 \ub124 \uac00\uc9c0 \uc2dc\uac04\uc744 \uc870\ud569, \ucd94\uc815\ud558\uc5ec \uc624\ucc28 \ubcf4\uc815\ud558\uc5ec \uc801\uc6a9\ud558\ub294 \uac83\uc774\uc9c0 \uc624\ucc28\ub97c &#8216;0&#8217;\uc73c\ub85c \ud574\uc8fc\ub294 \ud504\ub85c\ud1a0\ucf5c\uc774 \uc544\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc778\ubcf4\ub4dc\uc640 OS\uc2dc\uac04: \uba54\uc778\ubcf4\ub4dc\uac00 UTC\ub97c \uc4f0\ub294\uac00, KST\ub97c \uc4f0\ub294\uac00? \ubcf4\ub4dc\uc5d0\uc11c \uc774\ubbf8 KST\ub97c \uc4f0\ub294\ub370 OS\uc5d0\uc11c \ucd94\uac00\ub85c +9 \ud558\ub294 \uacbd\uc6b0\uac00 \uc788\uc74c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Linux \uc5d0\uc11c \uc724\ucd08 \ud574\uacb0: Timezone \ud328\ud0a4\uc9c0(tzdata) \uc218\uc2dc\ub85c \uc5c5\ub370\uc774\ud2b8 \ud574\uc57c\ud568.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">chrony \uc758 \uc6d0\uaca9\uc9c0 chrony \uad00\ub9ac: authhash \uba85\ub839 \uc2e4\ud589\ud574\ubcf4\uba74 &#8216;Authentication is no longer supported in the command protocol.&#8217; \ub77c\uace0 \ub728\ub294\ub370, chrony 2.2 \uc5d0\uc11c \ubcf4\uc548 \ubb38\uc81c\ub85c \uc81c\uac70\ub41c \uae30\ub2a5\uc774\ub77c\uace0&#8230; CentOS 6 \uc5d0 \uc124\uce58\ub418\ub294 chrony \ub294 2.1\uc774\ub77c \uc0ac\uc6a9 \uac00\ub2a5\ud558\uc9c0\ub9cc CentOS 7\ub9cc \ub3fc\ub3c4 \ubc84\uc804\uc774 \ub354 \ub192\uc544\uc11c \uc6d0\uaca9\uc9c0 chrony \uad00\ub9ac\ub294 \ubabb\ud568.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uad00\ub828\ub9c1\ud06c<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-\uc784\ubca0\ub4dc-\ud578\ub4e4\ub7ec wp-block-embed-\uc784\ubca0\ub4dc-\ud578\ub4e4\ub7ec\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/access.redhat.com\/documentation\/en-us\/red_hat_enterprise_linux\/7\/html\/system_administrators_guide\/ch-configuring_ntp_using_the_chrony_suite#sect-Using_chrony\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-\uc784\ubca0\ub4dc-\ud578\ub4e4\ub7ec wp-block-embed-\uc784\ubca0\ub4dc-\ud578\ub4e4\ub7ec\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/ubuntu.com\/server\/docs\/network-ntp\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-\uc784\ubca0\ub4dc-\ud578\ub4e4\ub7ec wp-block-embed-\uc784\ubca0\ub4dc-\ud578\ub4e4\ub7ec\"><div class=\"wp-block-embed__wrapper\">\nhttp:\/\/time.ewha.or.kr\/\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\ud55c\uc904 \uc694\uc57d: \uc2dc\uac04 \ub3d9\uae30\ud654\ub294 \uac04\ub2e8\ud558\uc9c0 \uc54a\ub2e4. \ucd5c\uc18c\ud55c NTP \ud504\ub85c\ud1a0\ucf5c \uc0ac\uc6a9 \uc774 \uae00\uc744 \uc4f0\ub294 \uc774\uc720\ub294&#8230; 2020\ub144 12\uc6d4 \ud604 \uc2dc\uc810\uc5d0\uc11c rdate(\uc640 cron)\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654 \ud558\uaca0\ub2e4\ub294 \ucda9\uaca9\uc801\uc778 \ube14\ub85c\uadf8 \uae00\uc744 \ubd10\uc11c&#8230; \uacb0\ub860\ubd80\ud130 \ub9d0\ud558\uba74 NTP \ud504\ub85c\ud1a0\ucf5c \uc9c0\uc6d0\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc73c\ub85c \ub3d9\uae30\ud654 \ud558\uc790. NTP \uc124\uc815 \ubc0f \uc6b4\uc601 \uc8fc\uc758\uc810 \uba3c\uc800 \uc368\ub454 \uae00 \ucc38\uace0\ud560 \uac83. \uc2dc\uac04 \ubcf4\uc815 \ubc29\ubc95 step: \uc989\uc2dc \uc2dc\uac04 \ubcf4\uc815 slew: \uc2dc\uacc4 \ud68c\uc804 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[85,88],"class_list":["post-11212","post","type-post","status-publish","format-standard","hentry","tag-85","tag-88"],"_links":{"self":[{"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=\/wp\/v2\/posts\/11212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11212"}],"version-history":[{"count":11,"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=\/wp\/v2\/posts\/11212\/revisions"}],"predecessor-version":[{"id":11249,"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=\/wp\/v2\/posts\/11212\/revisions\/11249"}],"wp:attachment":[{"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mini.jellypo.pe.kr\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}