{"id":1917,"date":"2025-10-14T18:30:00","date_gmt":"2025-10-14T09:30:00","guid":{"rendered":"https:\/\/seuheu.com\/?p=1917"},"modified":"2025-10-15T19:14:16","modified_gmt":"2025-10-15T10:14:16","slug":"linux-rocky-linux-9-5-chrony%eb%a1%9c-%ec%8b%9c%ea%b0%84-%eb%8f%99%ea%b8%b0%ed%99%94-%ec%84%a4%ec%a0%95%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/seuheu.com\/?p=1917","title":{"rendered":"[Linux] Rocky Linux 9.5 Chrony\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654 \uc124\uc815\ud558\uae30"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"[Linux] Rocky Linux 9.5 Chrony\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654 \uc124\uc815\ud558\uae30\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/Gvp2XwBfoKw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><br><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\ubaa9\ucc28<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\ubaa9\ucc28 \ud1a0\uae00\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/seuheu.com\/?p=1917\/#1_%EA%B0%9C%EC%9A%94\">1. \uac1c\uc694<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/seuheu.com\/?p=1917\/#2_%EB%B2%84%EC%A0%84\">2. \ubc84\uc804<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/seuheu.com\/?p=1917\/#3_%EC%84%A4%EB%AA%85\">3. \uc124\uba85<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/seuheu.com\/?p=1917\/#3-1_Chrony%EB%9E%80\">3-1. Chrony\ub780?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/seuheu.com\/?p=1917\/#3-2_Chrony_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC\">3-2. Chrony \uc124\uc815 \ud30c\uc77c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/seuheu.com\/?p=1917\/#3-3_Chrony_%EC%B6%9C%EB%A0%A5_%EA%B8%B0%ED%98%B8\">3-3. Chrony \ucd9c\ub825 \uae30\ud638<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/seuheu.com\/?p=1917\/#4_%EC%99%B8%EB%B6%80_%EC%84%9C%EB%B2%84_%EB%8F%99%EA%B8%B0%ED%99%94%EC%84%9C%EB%B2%84_A\">4. \uc678\ubd80 \uc11c\ubc84 \ub3d9\uae30\ud654(\uc11c\ubc84 A)<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/seuheu.com\/?p=1917\/#4-1_Chrony_%EC%84%A4%EC%B9%98_%ED%99%95%EC%9D%B8\">4-1. Chrony \uc124\uce58 \ud655\uc778<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/seuheu.com\/?p=1917\/#4-2_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EB%B0%B1%EC%97%85\">4-2. \uc124\uc815 \ud30c\uc77c \ubc31\uc5c5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/seuheu.com\/?p=1917\/#4-3_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EC%88%98%EC%A0%95\">4-3. \uc124\uc815 \ud30c\uc77c \uc218\uc815<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/seuheu.com\/?p=1917\/#4-4_%EC%84%9C%EB%B9%84%EC%8A%A4_%EC%A0%81%EC%9A%A9\">4-4. \uc11c\ube44\uc2a4 \uc801\uc6a9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/seuheu.com\/?p=1917\/#4-5_%EC%84%9C%EB%B9%84%EC%8A%A4_%ED%99%95%EC%9D%B8\">4-5. \uc11c\ube44\uc2a4 \ud655\uc778<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/seuheu.com\/?p=1917\/#4-6_%EB%B0%A9%ED%99%94%EB%B2%BD_%EC%84%A4%EC%A0%95\">4-6. \ubc29\ud654\ubcbd \uc124\uc815<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/seuheu.com\/?p=1917\/#5_%EB%82%B4%EB%B6%80_%EC%84%9C%EB%B2%84_%EB%8F%99%EA%B8%B0%ED%99%94%EC%84%9C%EB%B2%84_B\">5. \ub0b4\ubd80 \uc11c\ubc84 \ub3d9\uae30\ud654(\uc11c\ubc84 B)<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/seuheu.com\/?p=1917\/#5-1_Chrony_%EC%84%A4%EC%B9%98_%ED%99%95%EC%9D%B8\">5-1. Chrony \uc124\uce58 \ud655\uc778<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/seuheu.com\/?p=1917\/#5-2_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EB%B0%B1%EC%97%85\">5-2. \uc124\uc815 \ud30c\uc77c \ubc31\uc5c5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/seuheu.com\/?p=1917\/#5-3_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EC%88%98%EC%A0%95\">5-3. \uc124\uc815 \ud30c\uc77c \uc218\uc815<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/seuheu.com\/?p=1917\/#5-4_%EC%84%9C%EB%B9%84%EC%8A%A4_%EC%A0%81%EC%9A%A9\">5-4. \uc11c\ube44\uc2a4 \uc801\uc6a9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/seuheu.com\/?p=1917\/#5-5_%EC%84%9C%EB%B9%84%EC%8A%A4_%ED%99%95%EC%9D%B8\">5-5. \uc11c\ube44\uc2a4 \ud655\uc778<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%EA%B0%9C%EC%9A%94\"><\/span>1. \uac1c\uc694<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub9ac\ub205\uc2a4 \uc11c\ubc84\uc5d0\uc11c\ub294&nbsp;<strong>\uc2dc\uc2a4\ud15c \uc2dc\uac04(OS \uc2dc\uac04)<\/strong>&nbsp;\uacfc&nbsp;<strong>\ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04(RTC, Real-Time Clock)<\/strong>&nbsp;\uc744 \ub3d9\uae30\ud654\ud558\ub294 \uac83\uc774 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ud074\ub7ec\uc2a4\ud130 \ud658\uacbd\uc774\ub098 AD\/SSO \ud658\uacbd\uc5d0\uc11c\ub294 \uc2dc\uac04\uc774 \ub9de\uc9c0 \uc54a\uc73c\uba74 \uc778\uc99d \uc624\ub958, \ub85c\uadf8 \ubd88\uc77c\uce58, \uc791\uc5c5 \uc2a4\ucf00\uc904\ub9c1 \ubb38\uc81c \ub4f1\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><code>chrony<\/code>&nbsp;\ud328\ud0a4\uc9c0\ub97c \ud65c\uc6a9\ud558\uc5ec&nbsp;<strong>\uc678\ubd80 \uacf5\uac1c NTP \uc11c\ubc84 \ub3d9\uae30\ud654<\/strong>\uc640&nbsp;<strong>\ub0b4\ubd80 \uc11c\ubc84 \uac04 \uc2dc\uac04 \uc11c\ubc84 \uad6c\uc131(A-B \uad6c\uc870)<\/strong>&nbsp;\ubc29\ubc95\uc744 \uc815\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%EB%B2%84%EC%A0%84\"><\/span>2. \ubc84\uc804<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rocky Linux 9.5<\/li>\n<\/ul>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%EC%84%A4%EB%AA%85\"><\/span>3. \uc124\uba85<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3-1_Chrony%EB%9E%80\"><\/span>3-1. Chrony\ub780?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>chrony<\/code>\ub294 \ub9ac\ub205\uc2a4 \ud658\uacbd\uc5d0\uc11c \uc2dc\uac04\uc744 \ub3d9\uae30\ud654\ud558\uae30 \uc704\ud55c&nbsp;<strong>NTP(Network Time Protocol) \ud074\ub77c\uc774\uc5b8\ud2b8\/\uc11c\ubc84 \ud504\ub85c\uadf8\ub7a8<\/strong>\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3-2_Chrony_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC\"><\/span>3-2. Chrony \uc124\uc815 \ud30c\uc77c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">\ud56d\ubaa9<\/th><th>\uc124\uba85<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>server [\ud638\uc2a4\ud2b8\/IP] iburst<\/code><\/td><td>\uc9c0\uc815\ud55c NTP \uc11c\ubc84\uc640 \ub3d9\uae30\ud654.&nbsp;<code>iburst<\/code>\ub294 \ube60\ub978 \ucd08\uae30 \ub3d9\uae30\ud654\ub97c \uc704\ud574 \uc0ac\uc6a9<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>pool [\ub3c4\uba54\uc778] iburst<\/code><\/td><td>\uc5ec\ub7ec \uc11c\ubc84\ub97c \ud480(pool)\ub85c \uc9c0\uc815 (ex:&nbsp;<a href=\"http:\/\/kr.pool.ntp.org\/\" target=\"_blank\" rel=\"noopener\">kr.pool.ntp.org<\/a>)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>makestep 1.0 3<\/code><\/td><td>\uc2dc\uac04 \ucc28\uc774\uac00 1\ucd08 \uc774\uc0c1\uc77c \ub54c, \ucd08\uae30 3\ud68c \uc5c5\ub370\uc774\ud2b8 \ub3d9\uc548 \uc989\uc2dc \ubcf4\uc815<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>driftfile \/var\/lib\/chrony\/drift<\/code><\/td><td>\uc2dc\uc2a4\ud15c \ud074\ub7ed \uc8fc\ud30c\uc218 \uc624\ucc28 \ubcf4\uc815\uac12 \uc800\uc7a5<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>rtcsync<\/code><\/td><td>\ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uacc4(RTC)\uc640 \uc790\ub3d9 \ub3d9\uae30\ud654<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>allow 192.168.0.0\/16<\/code><\/td><td>\ud574\ub2f9 \ub124\ud2b8\uc6cc\ud06c \ub300\uc5ed\uc758 \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uc2dc\uac04 \ub3d9\uae30\ud654 \uc694\uccad \uac00\ub2a5<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>local stratum 10<\/code><\/td><td>\uc678\ubd80 \ub3d9\uae30\ud654\uac00 \ubd88\uac00\ub2a5\ud560 \ub54c \ub85c\uceec \uc11c\ubc84\ub97c \uae30\uc900 \uc2dc\uac04\uc73c\ub85c \uc81c\uacf5<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><code>logdir \/var\/log\/chrony<\/code><\/td><td>\ub85c\uadf8 \uc800\uc7a5 \ub514\ub809\ud1a0\ub9ac \uc9c0\uc815<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3-3_Chrony_%EC%B6%9C%EB%A0%A5_%EA%B8%B0%ED%98%B8\"><\/span>3-3. Chrony \ucd9c\ub825 \uae30\ud638<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table aligncenter\"><table class=\"has-fixed-layout\"><thead><tr><th>\uae30\ud638<\/th><th>\uc758\ubbf8<\/th><\/tr><\/thead><tbody><tr><td><code>*<\/code><\/td><td>\ud604\uc7ac \uc120\ud0dd\ub41c \uae30\uc900 \uc2dc\uac04 \uc11c\ubc84 (synchronized)<\/td><\/tr><tr><td><code>+<\/code><\/td><td>\ubcf4\uc870 \ud6c4\ubcf4 \uc11c\ubc84 (\ub3d9\uae30\ud654\ub294 \ub418\uc9c0\ub9cc *\ubcf4\ub2e4 \uc6b0\uc120\uc21c\uc704 \ub0ae\uc74c)<\/td><\/tr><tr><td><code>-<\/code><\/td><td>\ub3d9\uae30\ud654\ub294 \ub418\uc9c0\ub9cc \ud604\uc7ac \uc120\ud0dd\uc5d0\uc11c \uc81c\uc678\ub41c \uc11c\ubc84<\/td><\/tr><tr><td><code>?<\/code><\/td><td>\uc11c\ubc84\uc5d0 \uc5f0\uacb0\uc774 \ubd88\uc548\uc815\ud558\uac70\ub098 \uc751\ub2f5 \uc5c6\uc74c<\/td><\/tr><tr><td><code>^<\/code><\/td><td>\uc11c\ubc84(server) \ubc29\uc2dd\uc73c\ub85c \uc9c0\uc815\ub428<\/td><\/tr><tr><td><code>=<\/code><\/td><td>\ud53c\uc5b4(peer) \ubc29\uc2dd\uc73c\ub85c \uc9c0\uc815\ub428<\/td><\/tr><tr><td><code>#<\/code><\/td><td>\ub85c\uceec \ud074\ub7ed(local clock) \uc0ac\uc6a9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%EC%99%B8%EB%B6%80_%EC%84%9C%EB%B2%84_%EB%8F%99%EA%B8%B0%ED%99%94%EC%84%9C%EB%B2%84_A\"><\/span>4. \uc678\ubd80 \uc11c\ubc84 \ub3d9\uae30\ud654(\uc11c\ubc84 A)<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc11c\ubc84 A\ub294 \uc678\ubd80 \uacf5\uac1c NTP \uc11c\ubc84\uc640 \uc9c1\uc811 \ud1b5\uc2e0\ud558\uc5ec \ub0b4\ubd80\ub9dd\uc758 \uae30\uc900 \uc2dc\uac04\uc774 \ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-1_Chrony_%EC%84%A4%EC%B9%98_%ED%99%95%EC%9D%B8\"><\/span>4-1. Chrony \uc124\uce58 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># rpm -qa | grep chrony<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>chrony-4.5-3.el9.x86_64<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\uc124\uce58\uac00 \uc548 \ub418\uc5b4 \uc788\ub2e4\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub85c \uc124\uce58\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># dnf -y install chrony<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-2_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EB%B0%B1%EC%97%85\"><\/span>4-2. \uc124\uc815 \ud30c\uc77c \ubc31\uc5c5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># mv \/etc\/chrony.conf \/etc\/chrony.conf_org<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-3_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EC%88%98%EC%A0%95\"><\/span>4-3. \uc124\uc815 \ud30c\uc77c \uc218\uc815<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># vim \/etc\/chrony.conf<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\uc124\uc815 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \uc678\ubd80 \uacf5\uac1c NTP \uc11c\ubc84 \uc9c0\uc815 (iburst \u2192 \ube60\ub978 \ucd08\uae30 \ub3d9\uae30\ud654)\nserver time.google.com iburst\nserver time.cloudflare.com iburst\nserver 1.kr.pool.ntp.org iburst\nserver 1.asia.pool.ntp.org iburst\n\n# \ucd08\uae30 \ub3d9\uae30\ud654\uac00 1\ucd08 \uc774\uc0c1 \ucc28\uc774\ub0a0 \uacbd\uc6b0 \uc989\uc2dc \uc870\uc815 (makestep)\nmakestep 1.0 3\n\n# driftfile: clock \uc8fc\ud30c\uc218 \ubcf4\uc815\uac12 \uc800\uc7a5\ndriftfile \/var\/lib\/chrony\/drift\n\n# RTC (\ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uacc4)\uc640 \uc790\ub3d9 \ub3d9\uae30\ud654\nrtcsync\n\n# \ub85c\uadf8 \ub514\ub809\ud1a0\ub9ac\nlogdir \/var\/log\/chrony\n\n# \ud2b9\uc815 \ub300\uc5ed \ud5c8\uc6a9 (\ub0b4\ubd80\ub9dd)\nallow 192.168.204.0\/24\n\n# stratum \uc218\uc900 (\ub0b4\ubd80\ub9dd \ub9c8\uc2a4\ud130 \uc11c\ubc84 \uc5ed\ud560)\nlocal stratum 10<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-4_%EC%84%9C%EB%B9%84%EC%8A%A4_%EC%A0%81%EC%9A%A9\"><\/span>4-4. \uc11c\ube44\uc2a4 \uc801\uc6a9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># systemctl restart chronyd\n# chronyc makestep<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-5_%EC%84%9C%EB%B9%84%EC%8A%A4_%ED%99%95%EC%9D%B8\"><\/span>4-5. \uc11c\ube44\uc2a4 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># chronyc sources<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MS Name\/IP address         Stratum Poll Reach LastRx Last sample\n===============================================================================\n^* time3.google.com              1   6    17     7   +212us&#091;+3345us] +\/-   34ms\n^+ time.cloudflare.com           3   6    17     7  +1519us&#091;+4652us] +\/-   74ms\n^+ 121.174.142.81                3   6    17     7  +1202us&#091;+4336us] +\/-   42ms\n^- 103.186.118.221               2   6    17     7   -155us&#091; -155us] +\/-   33ms\n<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-6_%EB%B0%A9%ED%99%94%EB%B2%BD_%EC%84%A4%EC%A0%95\"><\/span>4-6. \ubc29\ud654\ubcbd \uc124\uc815<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># firewall-cmd --list-services<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cockpit dhcpv6-client ssh<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># firewall-cmd --add-service=ntp --permanent<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>success<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># firewall-cmd --reload<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>success<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># firewall-cmd --list-services<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cockpit dhcpv6-client ntp ssh<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_%EB%82%B4%EB%B6%80_%EC%84%9C%EB%B2%84_%EB%8F%99%EA%B8%B0%ED%99%94%EC%84%9C%EB%B2%84_B\"><\/span>5. \ub0b4\ubd80 \uc11c\ubc84 \ub3d9\uae30\ud654(\uc11c\ubc84 B)<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc11c\ubc84 B\ub294 \uc678\ubd80\uc640 \uc9c1\uc811 \ud1b5\uc2e0\ud558\uc9c0 \ubabb\ud558\ubbc0\ub85c, \ub0b4\ubd80 \uc11c\ubc84 A\ub97c \uae30\uc900\uc73c\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654\ub97c \uc9c4\ud589\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-1_Chrony_%EC%84%A4%EC%B9%98_%ED%99%95%EC%9D%B8\"><\/span>5-1. Chrony \uc124\uce58 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># rpm -qa | grep chrony<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>chrony-4.5-3.el9.x86_64<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\uc124\uce58\uac00 \uc548 \ub418\uc5b4 \uc788\ub2e4\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub85c \uc124\uce58\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># dnf -y install chrony<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-2_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EB%B0%B1%EC%97%85\"><\/span>5-2. \uc124\uc815 \ud30c\uc77c \ubc31\uc5c5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># mv \/etc\/chrony.conf \/etc\/chrony.conf_org<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-3_%EC%84%A4%EC%A0%95_%ED%8C%8C%EC%9D%BC_%EC%88%98%EC%A0%95\"><\/span>5-3. \uc124\uc815 \ud30c\uc77c \uc218\uc815<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># vim \/etc\/chrony.conf<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\uc124\uc815 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \ub0b4\ubd80 \uc11c\ubc84 A \uc9c0\uc815 (iburst\ub85c \ube60\ub978 \ucd08\uae30 \ub3d9\uae30\ud654)\nserver 192.168.204.230 iburst\n\n# \uc2dc\uac04 \uc624\ucc28\uac00 \ud06c\uba74 \uc989\uc2dc \ubcf4\uc815\nmakestep 1.0 3\n\n# driftfile: \uc8fc\ud30c\uc218 \uc624\ucc28 \uc800\uc7a5\ndriftfile \/var\/lib\/chrony\/drift\n\n# RTC \ub3d9\uae30\ud654\nrtcsync\n\n# \ub85c\uadf8 \ub514\ub809\ud1a0\ub9ac\nlogdir \/var\/log\/chrony<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-4_%EC%84%9C%EB%B9%84%EC%8A%A4_%EC%A0%81%EC%9A%A9\"><\/span>5-4. \uc11c\ube44\uc2a4 \uc801\uc6a9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># systemctl restart chronyd\n# chronyc makestep<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-5_%EC%84%9C%EB%B9%84%EC%8A%A4_%ED%99%95%EC%9D%B8\"><\/span>5-5. \uc11c\ube44\uc2a4 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># chronyc sources<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MS Name\/IP address         Stratum Poll Reach LastRx Last sample\n===============================================================================\n^* 192.168.204.230               2   6    17    44  +5847ns&#091;  +31us] +\/-   41ms<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>1. \uac1c\uc694 2. \ubc84\uc804 3. \uc124\uba85 3-1. Chrony\ub780? 3-2. Chrony \uc124\uc815 \ud30c\uc77c \ud56d\ubaa9 \uc124\uba85 server [\ud638\uc2a4\ud2b8\/IP] iburst \uc9c0\uc815\ud55c NTP \uc11c\ubc84\uc640 \ub3d9\uae30\ud654.&nbsp;iburst\ub294 \ube60\ub978 \ucd08\uae30 \ub3d9\uae30\ud654\ub97c \uc704\ud574 \uc0ac\uc6a9 pool [\ub3c4\uba54\uc778] iburst \uc5ec\ub7ec \uc11c\ubc84\ub97c \ud480(pool)\ub85c \uc9c0\uc815 (ex:&nbsp;kr.pool.ntp.org) makestep 1.0 3 \uc2dc\uac04 \ucc28\uc774\uac00 1\ucd08 \uc774\uc0c1\uc77c \ub54c, \ucd08\uae30 3\ud68c \uc5c5\ub370\uc774\ud2b8 \ub3d9\uc548 \uc989\uc2dc \ubcf4\uc815 driftfile \/var\/lib\/chrony\/drift \uc2dc\uc2a4\ud15c \ud074\ub7ed \uc8fc\ud30c\uc218 \uc624\ucc28 \ubcf4\uc815\uac12 &#8230; <a title=\"[Linux] Rocky Linux 9.5 Chrony\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654 \uc124\uc815\ud558\uae30\" class=\"read-more\" href=\"https:\/\/seuheu.com\/?p=1917\" aria-label=\"[Linux] Rocky Linux 9.5 Chrony\ub85c \uc2dc\uac04 \ub3d9\uae30\ud654 \uc124\uc815\ud558\uae30\uc5d0 \ub300\ud574 \ub354 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694\">\ub354 \uc77d\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,31],"tags":[],"class_list":["post-1917","post","type-post","status-publish","format-standard","hentry","category-rocky9","category-linuix"],"_links":{"self":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts\/1917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1917"}],"version-history":[{"count":5,"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts\/1917\/revisions"}],"predecessor-version":[{"id":1953,"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts\/1917\/revisions\/1953"}],"wp:attachment":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}