{"id":4682,"date":"2026-06-14T19:31:06","date_gmt":"2026-06-14T19:31:06","guid":{"rendered":"https:\/\/cloudsave.app\/?p=4682"},"modified":"2026-06-15T15:20:01","modified_gmt":"2026-06-15T15:20:01","slug":"%ec%a1%b0%ec%9a%a9%ed%95%9c-%ec%82%b4%ec%9d%b8%ec%9e%90-%ec%9e%ac%ec%95%99%ec%9d%b4-%eb%8b%a5%ec%b9%98%ea%b8%b0-%ec%a0%84%ec%97%90-%ec%86%90%ec%83%81%eb%90%9c-%eb%8d%b0%ec%9d%b4%ed%84%b0%eb%b2%a0","status":"publish","type":"post","link":"https:\/\/cloudsave.app\/ko\/knowledge-base\/%ec%a1%b0%ec%9a%a9%ed%95%9c-%ec%82%b4%ec%9d%b8%ec%9e%90-%ec%9e%ac%ec%95%99%ec%9d%b4-%eb%8b%a5%ec%b9%98%ea%b8%b0-%ec%a0%84%ec%97%90-%ec%86%90%ec%83%81%eb%90%9c-%eb%8d%b0%ec%9d%b4%ed%84%b0%eb%b2%a0\/","title":{"rendered":"\uc870\uc6a9\ud55c \uc0b4\uc778\uc790: \uc7ac\uc559\uc774 \ub2e5\uce58\uae30 \uc804\uc5d0 \uc190\uc0c1\ub41c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubc31\uc5c5\uc744 \uac10\uc9c0\ud558\ub294 \ubc29\ubc95"},"content":{"rendered":"<p>\ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac \ubc0f \uc0ac\uc774\ud2b8 \uc548\uc815\uc131 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1\uc758 \uace0\uc704\ud5d8 \uc138\uacc4\uc5d0\ub294 \uc798 \uc54c\ub824\uc9c4 \uaca9\uc5b8\uc774 \uc788\uc2b5\ub2c8\ub2e4. \ubc14\ub85c <em>\uc288\ub8b0\ub529\uac70\uc758 \ubc31\uc5c5(Schr\u00f6dinger\u2019s Backup)<\/em>\uc785\ub2c8\ub2e4. \ubc31\uc5c5\uc758 \uc0c1\ud0dc\ub294 \ubcf5\uc6d0\uc744 \uc2dc\ub3c4\ud558\uae30 \uc804\uae4c\uc9c0\ub294 \uc54c \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uadf8 \uc21c\uac04\uae4c\uc9c0 \ubc31\uc5c5\uc740 \uc644\ubcbd\ud558\uac8c \uc2e4\ud589 \uac00\ub2a5\ud55c \uc0c1\ud0dc\uc640 \uc644\uc804\ud788 \uc190\uc0c1\ub41c \uc0c1\ud0dc\ub77c\ub294 \uc591\uc790\uc801 \uc911\ucca9 \uc0c1\ud0dc\ub85c \uc874\uc7ac\ud569\ub2c8\ub2e4.<\/p>\n<p>DevOps \uc5d4\uc9c0\ub2c8\uc5b4\uc640 DBA\uc5d0\uac8c \ud65c\uc131 \uc778\uc2dc\ub358\ud2b8 \uc911\uc5d0 \uc911\uc694\ud55c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubc31\uc5c5\uc774 \uc190\uc0c1\ub418\uc5c8\uc74c\uc744 \ubc1c\uacac\ud558\ub294 \uac83\uc740 \ucd5c\uc545\uc758 \uc545\ubabd\uacfc \uac19\uc740 \uc2dc\ub098\ub9ac\uc624\uc785\ub2c8\ub2e4. \uc774\ub294 \uc77c\uc0c1\uc801\uc778 \ubcf5\uad6c \uc791\uc5c5\uc744 \uce58\uba85\uc801\uc778 \ub370\uc774\ud130 \uc190\uc2e4 \uc774\ubca4\ud2b8\ub85c \ubc14\uafd4\ubc84\ub9bd\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc758 &#8220;\uc18c\ub9ac \uc5c6\ub294 \uc0b4\uc778\uc790&#8221;\ub294 \ubc31\uc5c5 \uc791\uc5c5\uc774 \uae30\ubcf8 \ud398\uc774\ub85c\ub4dc\uac00 \uc190\uc0c1\ub418\uc5c8\uc744 \ub54c\uc870\ucc28\ub3c4 <code>Exit Code 0<\/code>(\uc131\uacf5)\uc744 \ubcf4\uace0\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uae30 \ub54c\ubb38\uc5d0 \uc885\uc885 \uac04\uacfc\ub429\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uc885\ud569 \uac00\uc774\ub4dc\uc5d0\uc11c\ub294 \ubc31\uc5c5 \uc190\uc0c1\uc758 \ud574\ubd80\ud559\uc801 \uad6c\uc870\ub97c \ubd84\uc11d\ud558\uace0, \ub370\uc774\ud130\ubca0\uc774\uc2a4\ubcc4 \uac80\uc99d \uae30\uc220\uc744 \ud0d0\uc0c9\ud558\uba70, \ud504\ub85c\ub355\uc158 \ud658\uacbd\uc744 \uc704\ud55c \uc790\ub3d9\ud654\ub41c \uc644\ubcbd\ud55c \ubcf5\uc6d0 \ud30c\uc774\ud504\ub77c\uc778\uc744 \uad6c\ucd95\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n<h2>\ubc31\uc5c5 \uc190\uc0c1\uc758 \ud574\ubd80\ud559<\/h2>\n<p>\uc190\uc0c1\uc744 \uac10\uc9c0\ud558\ub824\uba74 \uba3c\uc800 \uc190\uc0c1\uc774 \uc5b4\ub5bb\uac8c \ubc1c\uc0dd\ud558\ub294\uc9c0 \uc774\ud574\ud574\uc57c \ud569\ub2c8\ub2e4. \ubc31\uc5c5 \uc190\uc0c1\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ubb3c\ub9ac\uc801(\uc778\ud504\ub77c \uc218\uc900) \uc190\uc0c1\uacfc \ub17c\ub9ac\uc801(\uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc218\uc900) \uc190\uc0c1\uc758 \ub450 \uac00\uc9c0 \ubc94\uc8fc\ub85c \ub098\ub269\ub2c8\ub2e4.<\/p>\n<h3>\ubb3c\ub9ac\uc801 \uc190\uc0c1<\/h3>\n<p>\ubb3c\ub9ac\uc801 \uc190\uc0c1\uc740 \uc800\uc7a5 \ub9e4\uccb4\uc758 \uc2e4\uc81c \ube44\ud2b8\uac00 \ubcc0\uacbd\ub420 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc774\ub294 \uc18c\uc2a4 \ub514\uc2a4\ud06c\uc5d0\uc11c \uc77d\ub294 \uacfc\uc815, \ub124\ud2b8\uc6cc\ud06c \uc804\uc1a1 \uc911 \ub610\ub294 \ub300\uc0c1 \uc800\uc7a5\uc18c\uc5d0 \uc800\uc7a5\ub41c \uc0c1\ud0dc\uc5d0\uc11c \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n*   <strong>\ube44\ud2b8 \ub85c\ud2b8(Bit Rot):<\/strong> \uc800\uc7a5 \ub9e4\uccb4\uc758 \uc810\uc9c4\uc801\uc778 \uc131\ub2a5 \uc800\ud558\ub85c \uc778\ud574 \ube44\ud2b8\uac00 \uc870\uc6a9\ud788 \ub4a4\ubc14\ub014 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n*   <strong>\uc804\uc1a1 \uc624\ub958:<\/strong> TCP\uc5d0\ub294 \uccb4\ud06c\uc12c\uc774 \uc788\uc9c0\ub9cc, \uc774\ub294 16\ube44\ud2b8\ub85c \ub9e4\uc6b0 \ucde8\uc57d\ud569\ub2c8\ub2e4. \ucc98\ub9ac\ub7c9\uc774 \ub9ce\uc740 \ud658\uacbd\uc5d0\uc11c\ub294 TCP\uac00 \uc7a1\uc544\ub0b4\uc9c0 \ubabb\ud558\ub294 \ub370\uc774\ud130 \uc190\uc0c1\uc774 \uc804\uc1a1 \uc911\uc5d0 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n*   <strong>\uc2a4\ud1a0\ub9ac\uc9c0 \ucee8\ud2b8\ub864\ub7ec \uacb0\ud568:<\/strong> RAID \ucee8\ud2b8\ub864\ub7ec\ub098 SAN \ud328\ube0c\ub9ad\uc758 \ud558\ub4dc\uc6e8\uc5b4 \ubc84\uadf8\ub85c \uc778\ud574 OS\uc5d0\ub294 \uc131\uacf5\uc73c\ub85c \ubcf4\uace0\ub418\uba74\uc11c \uc2e4\uc81c\ub85c\ub294 \uc4f0\ub808\uae30 \ub370\uc774\ud130\uac00 \uae30\ub85d\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\ub17c\ub9ac\uc801 \uc190\uc0c1<\/h3>\n<p>\ub17c\ub9ac\uc801 \uc190\uc0c1\uc740 \ubc31\uc5c5 \ud30c\uc77c \uc790\uccb4\ub294 \uc644\ubcbd\ud558\uac8c \uc628\uc804\ud558\uc9c0\ub9cc \uadf8 \uc548\uc758 \ub370\uc774\ud130\uac00 \uae68\uc838 \uc788\uae30 \ub54c\ubb38\uc5d0 \ub354 \uc704\ud5d8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n*   <strong>\uac00\ube44\uc9c0 \uc778, \uac00\ube44\uc9c0 \uc544\uc6c3(GIGO):<\/strong> \ub77c\uc774\ube0c \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \uc190\uc0c1\ub41c \uc778\ub371\uc2a4\ub098 \ucc22\uc5b4\uc9c4 \ud398\uc774\uc9c0(torn page)\uac00 \uc788\ub294 \uacbd\uc6b0, \ubc31\uc5c5 \ub3c4\uad6c\ub294 \ud574\ub2f9 \uc190\uc0c1\ub41c \ud398\uc774\uc9c0\ub97c \ucda9\uc2e4\ud788 \ubcf5\uc0ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubc31\uc5c5 \uc791\uc5c5\uc740 \uc131\uacf5\ud558\uc9c0\ub9cc \ubcf5\uc6d0 \uc2dc \uc2e4\ud328\ud558\uac70\ub098 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \uae68\uc9c4 \uc0c1\ud0dc\uac00 \ub429\ub2c8\ub2e4.<br \/>\n*   <strong>\ubd88\uc644\uc804\ud55c \ud2b8\ub79c\uc7ad\uc158:<\/strong> \ub370\uc774\ud130\ubca0\uc774\uc2a4 I\/O\ub97c \uc801\uc808\ud788 \uace0\uc815\ud558\uc9c0 \uc54a\uace0(\uc608: MySQL\uc5d0\uc11c <code>FLUSH TABLES WITH READ LOCK<\/code>\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc74c) \ud30c\uc77c \uc2dc\uc2a4\ud15c \uc218\uc900\uc5d0\uc11c \uc2a4\ub0c5\uc0f7\uc744 \ucc0d\uc73c\uba74 \ucc22\uc5b4\uc9c4 \ud398\uc774\uc9c0\uac00 \ubc1c\uc0dd\ud558\uace0 \ubcf5\uad6c\ud560 \uc218 \uc5c6\ub294 \uc0c1\ud0dc\uac00 \ub429\ub2c8\ub2e4.<\/p>\n<h2>\uc0ac\uc804 \uc608\ubc29\uc801 \uac10\uc9c0: \uccb4\ud06c\uc12c \ubc0f \uc554\ud638\ud654 \ud574\uc2f1<\/h2>\n<p>\ubb3c\ub9ac\uc801 \uc190\uc0c1\uc5d0 \ub300\ud55c \uccab \ubc88\uc9f8 \ubc29\uc5b4\uc120\uc740 \uc554\ud638\ud654 \uac80\uc99d\uc785\ub2c8\ub2e4. \ud30c\uc77c \ud06c\uae30\ub098 \uc218\uc815 \ub0a0\uc9dc\uc5d0 \uc758\uc874\ud558\ub294 \uac83\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc218\uc900\uc758 \uccb4\ud06c\uc12c \ud65c\uc131\ud654<\/h3>\n<p>\ud604\ub300\uc801\uc778 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac \uc2dc\uc2a4\ud15c(RDBMS)\uc740 \ud398\uc774\uc9c0 \uc218\uc900\uc758 \uccb4\ud06c\uc12c\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \ud65c\uc131\ud654\ub418\uba74 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 \ub514\uc2a4\ud06c\uc5d0 \uc4f0\uae30 \uc804\uc5d0 \ubaa8\ub4e0 \ud398\uc774\uc9c0\uc5d0 \ub300\ud55c \uccb4\ud06c\uc12c\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4. \ud398\uc774\uc9c0\ub97c \uc77d\uc744 \ub54c(\ucffc\ub9ac\ub098 \ubc31\uc5c5 \ud504\ub85c\uc138\uc2a4\uc5d0 \uc758\ud574) \uccb4\ud06c\uc12c\uc774 \uac80\uc99d\ub429\ub2c8\ub2e4.<\/p>\n<p><strong>PostgreSQL<\/strong>\uc758 \uacbd\uc6b0 \ud074\ub7ec\uc2a4\ud130 \ucd08\uae30\ud654 \uc911\uc5d0 \ub370\uc774\ud130 \uccb4\ud06c\uc12c\uc744 \ud65c\uc131\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<pre><code class=\"language-bash\"># \uccb4\ud06c\uc12c\uc774 \ud65c\uc131\ud654\ub41c \uc0c8\ub85c\uc6b4 PostgreSQL \ud074\ub7ec\uc2a4\ud130 \ucd08\uae30\ud654\ninitdb --data-checksums -D \/var\/lib\/postgresql\/data\n<\/code><\/pre>\n<p><em>\ucc38\uace0: \uae30\uc874 PostgreSQL \ud074\ub7ec\uc2a4\ud130\uac00 \uc788\ub294 \uacbd\uc6b0 <code>pg_checksums<\/code> \uc720\ud2f8\ub9ac\ud2f0\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc624\ud504\ub77c\uc778\uc5d0\uc11c \ud65c\uc131\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/em><\/p>\n<p><strong>Microsoft SQL Server<\/strong>\uc758 \uacbd\uc6b0 <code>PAGE_VERIFY<\/code>\uac00 <code>CHECKSUM<\/code>\uc73c\ub85c \uc124\uc815\ub418\uc5b4 \uc788\ub294\uc9c0 \ud655\uc778\ud558\uc2ed\uc2dc\uc624(\ucd5c\uc2e0 \ubc84\uc804\uc5d0\uc11c\ub294 \uae30\ubcf8\uac12\uc774\uc9c0\ub9cc \ub808\uac70\uc2dc \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \ud655\uc778\uc774 \ud544\uc694\ud569\ub2c8\ub2e4):<\/p>\n<pre><code class=\"language-sql\">ALTER DATABASE [ProductionDB] SET PAGE_VERIFY CHECKSUM;\nGO\n<\/code><\/pre>\n<h3>\uc800\uc7a5\ub41c \ubc31\uc5c5 \uac80\uc99d<\/h3>\n<p>\ubc31\uc5c5\uc774 \uc2a4\ud1a0\ub9ac\uc9c0 \ub300\uc0c1\uc5d0 \ub3c4\ub2ec\ud558\uba74 \uc554\ud638\ud654 \ubc29\uc2dd\uc73c\ub85c \ubb34\uacb0\uc131\uc744 \uac80\uc99d\ud574\uc57c \ud569\ub2c8\ub2e4. CloudSave\uc640 \uac19\uc740 \uc5d4\ud130\ud504\ub77c\uc774\uc988 \ubc31\uc5c5 \ud50c\ub7ab\ud3fc\uc740 \uc804\uc1a1 \uc911 \ubc0f \uc800\uc7a5 \uc2dc \ubc31\uc5c5 \ube14\ub85d\uc758 SHA-256 \ud574\uc2dc\ub97c \uc790\ub3d9\uc73c\ub85c \uacc4\uc0b0\ud558\uace0 \uac80\uc99d\ud569\ub2c8\ub2e4. \uc0ac\uc6a9\uc790 \uc9c0\uc815 \uc2a4\ud06c\ub9bd\ud2b8\ub97c \uad00\ub9ac\ud558\ub294 \uacbd\uc6b0 \uc774\ub97c \uc218\ub3d9\uc73c\ub85c \uad6c\ud604\ud574\uc57c \ud569\ub2c8\ub2e4:<\/p>\n<pre><code class=\"language-bash\"># \ubc31\uc5c5 \uc0dd\uc131 \ud6c4 SHA-256 \ud574\uc2dc \uc0dd\uc131\nsha256sum prod_db_backup.tar.gz &gt; prod_db_backup.tar.gz.sha256\n\n# \uc2a4\ud1a0\ub9ac\uc9c0 \uc11c\ubc84\uc5d0\uc11c \ud574\uc2dc \uac80\uc99d\nsha256sum -c prod_db_backup.tar.gz.sha256\n<\/code><\/pre>\n<h2>\ub370\uc774\ud130\ubca0\uc774\uc2a4\ubcc4 \uac80\uc99d \uae30\uc220<\/h2>\n<p>\uac01 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5d4\uc9c4\uc740 \ubc31\uc5c5 \uc544\ud2f0\ud329\ud2b8\uc758 \ubb34\uacb0\uc131\uc744 \uac80\uc99d\ud558\uae30 \uc704\ud55c \uae30\ubcf8 \ub3c4\uad6c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<h3>PostgreSQL: <code>pg_verifybackup<\/code><\/h3>\n<p>PostgreSQL 13\uc5d0\uc11c \ub3c4\uc785\ub41c <code>pg_verifybackup<\/code>\uc740 <code>pg_basebackup<\/code>\uc73c\ub85c \uc218\ud589\ub41c \ubb3c\ub9ac\uc801 \ubc31\uc5c5\uc744 \uc704\ud55c \ud68d\uae30\uc801\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4. \ubc31\uc5c5 \uc911\uc5d0 \uc0dd\uc131\ub41c <code>backup_manifest<\/code> \ud30c\uc77c\uc744 \uc77d\uace0 \ubaa8\ub4e0 \ud30c\uc77c\uc774 \uc874\uc7ac\ud558\uba70 \uccb4\ud06c\uc12c\uc774 \uc77c\uce58\ud558\ub294\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-bash\"># \ubb3c\ub9ac\uc801 \ubca0\uc774\uc2a4 \ubc31\uc5c5 \ub514\ub809\ud1a0\ub9ac\uc5d0 \ub300\ud574 \uac80\uc99d \uc2e4\ud589\npg_verifybackup \/mnt\/backups\/postgres\/base_backup_20231025\/\n<\/code><\/pre>\n<p>\ub370\uc774\ud130 \ud30c\uc77c \uc911 \ud558\ub098\ub77c\ub3c4 \ube44\ud2b8\uac00 \ub4a4\ubc14\ub00c\uba74 <code>pg_verifybackup<\/code>\uc740 \uce58\uba85\uc801\uc778 \uc624\ub958\ub97c \ubc1c\uc0dd\uc2dc\ucf1c \ubaa8\ub2c8\ud130\ub9c1 \uc2dc\uc2a4\ud15c\uc774 \uc989\uc2dc DBA \ud300\uc5d0 \uc54c\ub9b4 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n<h3>Microsoft SQL Server: <code>RESTORE VERIFYONLY<\/code><\/h3>\n<p>SQL Server\ub294 \ubc31\uc5c5 \ud30c\uc77c\uc744 \uc2e4\uc81c\ub85c \ubcf5\uc6d0\ud558\uc9c0 \uc54a\uace0\ub3c4 \ubb3c\ub9ac\uc801 \ubb34\uacb0\uc131\uc744 \ud655\uc778\ud560 \uc218 \uc788\ub294 \uae30\ubcf8 \uba85\ub839\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774 \uba85\ub839\uc740 \ubc31\uc5c5 \ud5e4\ub354\ub97c \ud655\uc778\ud558\uace0 \ud398\uc774\uc9c0 \uccb4\ud06c\uc12c\uc744 \uac80\uc99d\ud569\ub2c8\ub2e4(\ubc31\uc5c5 \uc2dc \ud65c\uc131\ud654\ub41c \uacbd\uc6b0).<\/p>\n<pre><code class=\"language-sql\">RESTORE VERIFYONLY \nFROM DISK = 'Z:BackupsProdDB_Full.bak' \nWITH CHECKSUM;\n<\/code><\/pre>\n<p><strong>\uacbd\uace0:<\/strong> <code>RESTORE VERIFYONLY<\/code>\ub294 \ubc31\uc5c5 \ud30c\uc77c\uc774 \uc77d\uae30 \uac00\ub2a5\ud558\uace0 \ubb3c\ub9ac\uc801 \uccb4\ud06c\uc12c\uc774 \uc77c\uce58\ud55c\ub2e4\ub294 \uac83\ub9cc \ud655\uc778\ud569\ub2c8\ub2e4. \ub17c\ub9ac\uc801 \ubb34\uacb0\uc131\uc744 \ubcf4\uc7a5\ud558\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4. \ub17c\ub9ac\uc801 \ubb34\uacb0\uc131\uc744 \ubcf4\uc7a5\ud558\ub824\uba74 \uc804\uccb4 \ubcf5\uc6d0\uc744 \uc218\ud589\ud558\uace0 <code>DBCC CHECKDB<\/code>\ub97c \uc2e4\ud589\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>MySQL \/ InnoDB: Percona XtraBackup<\/h3>\n<p>MySQL \ud658\uacbd\uc758 \uacbd\uc6b0 \ubb3c\ub9ac\uc801 \ubc31\uc5c5\uc740 \uc885\uc885 Percona XtraBackup\uc73c\ub85c \ucc98\ub9ac\ub429\ub2c8\ub2e4. \ubc31\uc5c5 \ud504\ub85c\uc138\uc2a4\ub294 \ud30c\uc77c \ubcf5\uc0ac\ub85c \uad6c\uc131\ub418\uc9c0\ub9cc, \ud2b8\ub79c\uc7ad\uc158 \ub85c\uadf8(redo logs)\uac00 \uc801\uc6a9\ub418\uae30 \uc804\uae4c\uc9c0\ub294 \ubc31\uc5c5\uc774 \uc77c\uad00\ub41c \uc0c1\ud0dc\uac00 \uc544\ub2d9\ub2c8\ub2e4. <code>--prepare<\/code> \ub2e8\uacc4\uac00 \ub0b4\uc7a5\ub41c \ubb34\uacb0\uc131 \uac80\uc0ac \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-bash\"># \ubc31\uc5c5 \uc900\ube44 \ub2e8\uacc4\uc5d0\uc11c redo \ub85c\uadf8\uac00 \uc801\uc6a9\ub429\ub2c8\ub2e4. \n# \ubc31\uc5c5\uc774 \uc190\uc0c1\ub41c \uacbd\uc6b0 \uc774 \ub2e8\uacc4\uc5d0\uc11c \uc2e4\ud328\ud569\ub2c8\ub2e4.\nxtrabackup --prepare --target-dir=\/data\/backups\/mysql\/\n<\/code><\/pre>\n<h2>\uace8\ub4dc \ud45c\uc900: \uc790\ub3d9\ud654\ub41c \ubcf5\uc6d0 \ud14c\uc2a4\ud2b8<\/h2>\n<p>\uccb4\ud06c\uc12c\uacfc \uac80\uc99d \uba85\ub839\uc740 \ud544\uc694\ud558\uc9c0\ub9cc \ucda9\ubd84\ud558\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4. \ubc31\uc5c5\uc774 \uc2e4\ud589 \uac00\ub2a5\ud558\ub2e4\ub294 \uac83\uc744 \ud655\uc2e4\ud558\uac8c \uc99d\uba85\ud558\ub294 \uc720\uc77c\ud55c \ubc29\ubc95\uc740 \ubcf5\uc6d0\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \ud604\ub300\uc801\uc778 DevOps \ud658\uacbd\uc5d0\uc11c\ub294 \uc774 \ud504\ub85c\uc138\uc2a4\uac00 \uc644\uc804\ud788 \uc790\ub3d9\ud654\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p>\ubc31\uc5c5\uc744 \ucf54\ub4dc\ub85c \ucde8\uae09\ud568\uc73c\ub85c\uc368 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubcf5\uc6d0\uc744 \uc704\ud55c CI\/CD \ud30c\uc774\ud504\ub77c\uc778\uc744 \uad6c\ucd95\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ud30c\uc774\ud504\ub77c\uc778\uc740 \uc77c\uc2dc\uc801\uc778 \uc778\ud504\ub77c\ub97c \ud504\ub85c\ube44\uc800\ub2dd\ud558\uace0, \ubcf5\uc6d0\uc744 \uc2e4\ud589\ud558\uba70, \uac80\uc99d \ucffc\ub9ac\ub97c \uc2e4\ud589\ud558\uace0, \ud658\uacbd\uc744 \uc0ad\uc81c\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>\uc790\ub3d9\ud654\ub41c \ubcf5\uc6d0 \ud30c\uc774\ud504\ub77c\uc778 \uad6c\ucd95<\/h3>\n<p>\ub2e4\uc74c\uc740 PostgreSQL \ub17c\ub9ac\uc801 \ub364\ud504\ub97c \uac80\uc99d\ud558\uae30 \uc704\ud574 \ud06c\ub860 \uc791\uc5c5\uc774\ub098 CI \ub7ec\ub108(GitLab CI \ub610\ub294 GitHub Actions \ub4f1)\uc5d0 \uc758\ud574 \ub9e4\uc77c \ud2b8\ub9ac\uac70\ub420 \uc218 \uc788\ub294 Bash \uc2a4\ud06c\ub9bd\ud2b8 \uc608\uc2dc\uc785\ub2c8\ub2e4.<\/p>\n<pre><code class=\"language-bash\">#!\/bin\/bash\nset -e\n\nBACKUP_FILE=&quot;\/mnt\/storage\/prod_db_latest.dump&quot;\nDB_NAME=&quot;prod_db&quot;\nCONTAINER_NAME=&quot;pg_restore_test&quot;\n\necho &quot;[INFO] \uc790\ub3d9\ud654\ub41c \ubcf5\uc6d0 \ud14c\uc2a4\ud2b8 \uc2dc\uc791...&quot;\n\n# 1. \uc77c\uc2dc\uc801\uc778 PostgreSQL \ucee8\ud14c\uc774\ub108 \uc2e4\ud589\ndocker run --name $CONTAINER_NAME \n  -e POSTGRES_PASSWORD=testpass \n  -d postgres:15\n\n# PostgreSQL \uc900\ube44 \ub300\uae30\necho &quot;[INFO] \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ucd08\uae30\ud654 \ub300\uae30 \uc911...&quot;\nuntil docker exec $CONTAINER_NAME pg_isready -U postgres; do\n  sleep 2\ndone\n\n# 2. \ub300\uc0c1 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc0dd\uc131\ndocker exec $CONTAINER_NAME psql -U postgres -c &quot;CREATE DATABASE $DB_NAME;&quot;\n\n# 3. \ubcf5\uc6d0 \uc2e4\ud589\necho &quot;[INFO] \ubc31\uc5c5 \ubcf5\uc6d0 \uc911...&quot;\ndocker cp $BACKUP_FILE $CONTAINER_NAME:\/tmp\/backup.dump\ndocker exec $CONTAINER_NAME pg_restore -U postgres -d $DB_NAME -1 \/tmp\/backup.dump\n\n# 4. \ub17c\ub9ac\uc801 \uac80\uc99d \ucffc\ub9ac \uc2e4\ud589\necho &quot;[INFO] \uac80\uc99d \ucffc\ub9ac \uc2e4\ud589 \uc911...&quot;\n# users \ud14c\uc774\ube14\uc5d0 10,000\uac1c \uc774\uc0c1\uc758 \ub808\ucf54\ub4dc\uac00 \uc788\ub294\uc9c0 \ud655\uc778\nUSER_COUNT=$(docker exec $CONTAINER_NAME psql -U postgres -d $DB_NAME -t -c &quot;SELECT COUNT(*) FROM users;&quot;)\n\nif [ &quot;$USER_COUNT&quot; -lt 10000 ]; then\n    echo &quot;[ERROR] \ub17c\ub9ac\uc801 \uac80\uc99d \uc2e4\ud328. 10,000\uba85 \uc774\uc0c1\uc758 \uc0ac\uc6a9\uc790\uac00 \uc608\uc0c1\ub418\uc5c8\uc73c\ub098 $USER_COUNT \uba85 \ubc1c\uacac\ub428&quot;\n    # \uc5ec\uae30\uc11c PagerDuty \/ Slack \uc54c\ub9bc \ud2b8\ub9ac\uac70\n    exit 1\nelse\n    echo &quot;[SUCCESS] \ub17c\ub9ac\uc801 \uac80\uc99d \ud1b5\uacfc. \uc0ac\uc6a9\uc790 \uc218: $USER_COUNT&quot;\nfi\n\n# 5. \uc77c\uc2dc\uc801 \ud658\uacbd \uc0ad\uc81c\necho &quot;[INFO] \uc815\ub9ac \uc911...&quot;\ndocker rm -f $CONTAINER_NAME\n\necho &quot;[INFO] \uc790\ub3d9\ud654\ub41c \ubcf5\uc6d0 \ud14c\uc2a4\ud2b8 \uc131\uacf5\uc801\uc73c\ub85c \uc644\ub8cc.&quot;\n<\/code><\/pre>\n<h3>\ubb34\uc5c7\uc744 \uac80\uc99d\ud574\uc57c \ud558\ub294\uac00?<\/h3>\n<p>\uc790\ub3d9\ud654\ub41c \ubcf5\uc6d0 \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud560 \ub54c \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \uc2dc\uc791\ub418\ub294\uc9c0\ub9cc \ud655\uc778\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624. \uc560\ud50c\ub9ac\ucf00\uc774\uc158\ubcc4 \uac80\uc99d \ucffc\ub9ac\ub97c \uc2e4\ud589\ud558\uc2ed\uc2dc\uc624:<br \/>\n1.  <strong>\ud589 \uac1c\uc218:<\/strong> \ud575\uc2ec \ud14c\uc774\ube14\uc5d0 \uc608\uc0c1\ub418\ub294 \ud589 \uac1c\uc218\uac00 \uc788\ub294\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4(\uc608: <code>users<\/code> \ud14c\uc774\ube14\uc774 \ube44\uc5b4 \uc788\uc9c0 \uc54a\uc544\uc57c \ud568).<br \/>\n2.  <strong>\ucd5c\uc2e0 \ub370\uc774\ud130:<\/strong> \uc9c0\ub09c 24\uc2dc\uac04 \ub3d9\uc548 \uc0dd\uc131\ub41c \ub808\ucf54\ub4dc\ub97c \ucffc\ub9ac\ud558\uc5ec \ubc31\uc5c5\uc774 \uc624\ub798\ub418\uc9c0 \uc54a\uc558\ub294\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.<br \/>\n3.  <strong>\ucc38\uc870 \ubb34\uacb0\uc131:<\/strong> \ub17c\ub9ac\uc801 \uc190\uc0c1\uc744 \ub098\ud0c0\ub0b4\ub294 \uace0\uc544 \uc678\ub798 \ud0a4(orphaned foreign keys)\ub97c \ud655\uc778\ud558\ub294 \uc2a4\ud06c\ub9bd\ud2b8\ub97c \uc2e4\ud589\ud569\ub2c8\ub2e4.<\/p>\n<h2>\ubc31\uc5c5 \uc774\uc0c1 \uc9d5\ud6c4\uc5d0 \ub300\ud55c \ubaa8\ub2c8\ud130\ub9c1 \ubc0f \uc54c\ub9bc<\/h2>\n<p>\uc7ac\ub09c\uc774 \ubc1c\uc0dd\ud558\uae30 \uc804\uc5d0 \uc190\uc0c1\uc744 \uac10\uc9c0\ud558\ub824\uba74 \uac15\ub825\ud55c \uad00\uce21 \uac00\ub2a5\uc131\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uc774\uc9c4 \uc131\uacf5\/\uc2e4\ud328 \uc0c1\ud0dc\ub97c \ub118\uc5b4 \ubc31\uc5c5 \uc791\uc5c5\uc758 \uba54\ud0c0\ub370\uc774\ud130\ub97c \ubaa8\ub2c8\ud130\ub9c1\ud558\uc5ec \uc774\uc0c1 \uc9d5\ud6c4\ub97c \uac10\uc9c0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h3>\ud734\ub9ac\uc2a4\ud2f1 \ubaa8\ub2c8\ud130\ub9c1<\/h3>\n<p>\ubc31\uc5c5 \uba54\ud0c0\ub370\uc774\ud130\ub97c Prometheus\uc5d0 \ud1b5\ud569\ud558\uace0 Grafana\ub85c \uc2dc\uac01\ud654\ud558\uc2ed\uc2dc\uc624. \ub2e4\uc74c \ud734\ub9ac\uc2a4\ud2f1\uc5d0 \ub300\ud55c \uc54c\ub9bc\uc744 \uc124\uc815\ud558\uc2ed\uc2dc\uc624:<br \/>\n*   <strong>\uac11\uc791\uc2a4\ub7ec\uc6b4 \ud06c\uae30 \uac10\uc18c:<\/strong> \uc77c\uc77c \ubc31\uc5c5\uc774 \ud56d\uc0c1 500GB\uc600\ub294\ub370 \uc624\ub298 50MB\ub77c\uba74, \uc791\uc5c5\uc740 \uc131\uacf5\uc801\uc73c\ub85c \uc644\ub8cc(Exit Code 0)\ub418\uc5c8\uc744\uc9c0\ub77c\ub3c4 \ube48 \uc2a4\ud0a4\ub9c8\ub9cc \ubc31\uc5c5\ub418\uc5c8\uc744 \uac00\ub2a5\uc131\uc774 \ud07d\ub2c8\ub2e4.<br \/>\n*   <strong>\uc18c\uc694 \uc2dc\uac04 \uc774\uc0c1:<\/strong> \uc77c\ubc18\uc801\uc73c\ub85c 2\uc2dc\uac04 \uac78\ub9ac\ub294 \ubc31\uc5c5\uc774 5\ubd84 \ub9cc\uc5d0 \ub05d\ub09c\ub2e4\uba74 \ubb34\uc5b8\uac00 \uac74\ub108\ub6f4 \uac83\uc785\ub2c8\ub2e4. \ubc18\ub300\ub85c 10\uc2dc\uac04\uc774 \uac78\ub9b0\ub2e4\uba74 \uc190\uc0c1\uc73c\ub85c \uc774\uc5b4\uc9c8 \uc218 \uc788\ub294 \ub514\uc2a4\ud06c I\/O \uc131\ub2a5 \uc800\ud558\uac00 \ubc1c\uc0dd\ud588\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n*   <strong>WAL\/\uc544\uce74\uc774\ube0c \ub85c\uadf8 \ub204\uc801:<\/strong> \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 WAL(Write-Ahead Logs)\uc744 \uc0dd\uc131\ud558\ub294\ub370 \ubc31\uc5c5 \uc2dc\uc2a4\ud15c\uc774 \uc774\ub97c \ucda9\ubd84\ud788 \ube60\ub974\uac8c \uc544\uce74\uc774\ube0c\ud558\uc9c0 \ubabb\ud558\uba74 PITR(Point-in-Time Recovery) \uccb4\uc778\uc5d0 \uacf5\ubc31\uc774 \uc0dd\uae38 \uc704\ud5d8\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\ubb34\uacb0\uc131 \uac80\uc0ac\ub97c \ud3ec\ud568\ud55c 3-2-1 \uaddc\uce59 \uad6c\ud604<\/h2>\n<p>\uc5c5\uacc4 \ud45c\uc900\uc778 3-2-1 \ubc31\uc5c5 \uaddc\uce59(\ub370\uc774\ud130 3\uac1c \ubcf5\uc0ac\ubcf8, 2\uac1c\uc758 \uc11c\ub85c \ub2e4\ub978 \ub9e4\uccb4, 1\uac1c\uc758 \uc624\ud504\uc0ac\uc774\ud2b8 \ubcf4\uad00)\uc740 \ubaa8\ub4e0 \ubcf5\uc0ac\ubcf8\uc774 \uac80\uc99d\ub420 \ub54c\ub9cc \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uc9c0\uc810\uc5d0\uc11c CloudSave\uc640 \uac19\uc740 \uc5d4\ud130\ud504\ub77c\uc774\uc988 \uc194\ub8e8\uc158\uc744 \ud65c\uc6a9\ud558\uba74 \uc6b4\uc601 \uc624\ubc84\ud5e4\ub4dc\ub97c \ud06c\uac8c \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubaa8\ub4e0 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ub178\ub4dc\uc5d0 \ub300\ud574 \ubcf5\uc7a1\ud55c bash \uc2a4\ud06c\ub9bd\ud2b8\ub97c \uc791\uc131\ud558\uace0 \uc720\uc9c0 \uad00\ub9ac\ud558\ub294 \ub300\uc2e0, CloudSave\ub294 \uc778\ud504\ub77c\uc640 \uc9c1\uc811 \ud1b5\ud569\ub418\uc5b4 3-2-1 \uc218\uba85 \uc8fc\uae30\ub97c \uc790\ub3d9\ud654\ud569\ub2c8\ub2e4. \ub79c\uc12c\uc6e8\uc5b4\ub85c\ubd80\ud130 \ubcf4\ud638\ud558\ub294 \ubd88\ubcc0 \uc2a4\ud1a0\ub9ac\uc9c0(immutable storage)\ub97c \uc81c\uacf5\ud558\uba70, \ub0b4\uc7a5\ub41c \uc790\ub3d9 \ubcf5\uc6d0 \uac80\uc99d \uc77c\uc815\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. CloudSave\ub294 \uaca9\ub9ac\ub41c \uc0cc\ub4dc\ubc15\uc2a4 \ud658\uacbd\uc744 \uc790\ub3d9\uc73c\ub85c \uc2e4\ud589\ud558\uace0, \ubc31\uc5c5\uc744 \ub9c8\uc6b4\ud2b8\ud558\uba70, \uc0ac\uc6a9\uc790 \uc9c0\uc815 SQL \uac80\uc99d \uc2a4\ud06c\ub9bd\ud2b8\ub97c \uc2e4\ud589\ud558\uace0, \uc0c1\ud0dc\ub97c \uc911\uc559 \ub300\uc2dc\ubcf4\ub4dc\ub85c \ubcf4\uace0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uacb0\ub860<\/h2>\n<p>\uc190\uc0c1\ub41c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubc31\uc5c5\uc740 \ube44\uc988\ub2c8\uc2a4\ub97c \ud30c\uad34\ud560 \uc218 \uc788\ub294 \uc18c\ub9ac \uc5c6\ub294 \uc0b4\uc778\uc790\uc785\ub2c8\ub2e4. \ubc31\uc5c5 \uc2a4\ud06c\ub9bd\ud2b8\uc758 <code>Exit Code 0<\/code>\uc5d0\ub9cc \uc758\uc874\ud558\ub294 \uac83\uc740 \uc704\ud5d8\ud55c \ub3c4\ubc15\uc785\ub2c8\ub2e4.<\/p>\n<p>\ud504\ub85c\ub355\uc158 \ud658\uacbd\uc744 \uc9c4\uc815\uc73c\ub85c \ubcf4\ud638\ud558\ub824\uba74 \uc2ec\uce35 \ubc29\uc5b4 \uc804\ub7b5\uc744 \ucc44\ud0dd\ud574\uc57c \ud569\ub2c8\ub2e4:<br \/>\n1.  \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5d4\uc9c4 \ub0b4\uc5d0\uc11c \ud398\uc774\uc9c0 \uc218\uc900 \uccb4\ud06c\uc12c\uc744 \ud65c\uc131\ud654\ud558\uc2ed\uc2dc\uc624.<br \/>\n2.  \ubc31\uc5c5 \uc0dd\uc131 \uc9c1\ud6c4 \uae30\ubcf8 \uac80\uc99d \ub3c4\uad6c(<code>pg_verifybackup<\/code>, <code>RESTORE VERIFYONLY<\/code>)\ub97c \ud65c\uc6a9\ud558\uc2ed\uc2dc\uc624.<br \/>\n3.  \ubc31\uc5c5 \uba54\ud0c0\ub370\uc774\ud130(\ud06c\uae30, \uc18c\uc694 \uc2dc\uac04)\ub97c \ubaa8\ub2c8\ud130\ub9c1\ud558\uc5ec \ud734\ub9ac\uc2a4\ud2f1 \uc774\uc0c1 \uc9d5\ud6c4\ub97c \uac10\uc9c0\ud558\uc2ed\uc2dc\uc624.<br \/>\n4.  \uc77c\uc77c \uc6b4\uc601 \ud30c\uc774\ud504\ub77c\uc778\uc758 \uc77c\ubd80\ub85c \uc790\ub3d9\ud654\ub41c \uc77c\uc2dc\uc801 \ubcf5\uc6d0 \ud14c\uc2a4\ud2b8\ub97c \uad6c\ud604\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>\uc218\ub3d9\uc801\uc778 &#8220;\uc124\uc815 \ud6c4 \ubc29\uce58(fire and forget)&#8221; \ubc31\uc5c5 \ubc29\uc2dd\uc5d0\uc11c \ub2a5\ub3d9\uc801\uc778 &#8220;\uc9c0\uc18d\uc801 \ubcf5\uc6d0 \uac80\uc99d&#8221; \ubaa8\ub378\ub85c \uc804\ud658\ud568\uc73c\ub85c\uc368, \uc7ac\ub09c\uc774 \ubd88\uac00\ud53c\ud558\uac8c \ub2e5\ucce4\uc744 \ub54c \ub370\uc774\ud130\uac00 \uc900\ube44\ub418\uc5b4 \uc788\uace0 \uc2e0\ub8b0\ud560 \uc218 \uc788\uc73c\uba70 \uc644\uc804\ud788 \ubcf5\uad6c \uac00\ub2a5\ud568\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>** Discover how DevOps engineers and DBAs can detect corrupted database backups before disaster strikes. Learn advanced techniques for PostgreSQL, SQL Server, and MySQL, including automated restore testing and checksum validation.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Detect Corrupted Database Backups Before Disaster","rank_math_description":"** Discover how DevOps engineers and DBAs can detect corrupted database backups before disaster strikes. 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