{"id":3814,"date":"2026-06-12T08:08:32","date_gmt":"2026-06-12T08:08:32","guid":{"rendered":"https:\/\/cloudsave.app\/?p=3814"},"modified":"2026-06-12T08:21:49","modified_gmt":"2026-06-12T08:21:49","slug":"diy-%e8%b3%87%e6%96%99%e5%ba%ab%e5%82%99%e4%bb%bd%e8%85%b3%e6%9c%ac%e7%9a%84%e9%9a%b1%e8%97%8f%e9%a2%a8%e9%9a%aa-%e7%82%ba%e4%bd%95%e8%87%aa%e8%a8%82-bash-%e7%84%a1%e6%b3%95%e5%9c%a8%e7%94%9f%e7%94%a2","status":"publish","type":"post","link":"https:\/\/cloudsave.app\/zh-hant\/knowledge-base\/diy-%e8%b3%87%e6%96%99%e5%ba%ab%e5%82%99%e4%bb%bd%e8%85%b3%e6%9c%ac%e7%9a%84%e9%9a%b1%e8%97%8f%e9%a2%a8%e9%9a%aa-%e7%82%ba%e4%bd%95%e8%87%aa%e8%a8%82-bash-%e7%84%a1%e6%b3%95%e5%9c%a8%e7%94%9f%e7%94%a2\/","title":{"rendered":"DIY \u8cc7\u6599\u5eab\u5099\u4efd\u8173\u672c\u7684\u96b1\u85cf\u98a8\u96aa\uff1a\u70ba\u4f55\u81ea\u8a02 Bash \u7121\u6cd5\u5728\u751f\u7522\u74b0\u5883\u4e2d\u64f4\u5c55"},"content":{"rendered":"<p>\u6bcf\u4e00\u4f4d\u8cc7\u6599\u5eab\u7ba1\u7406\u54e1 (DBA) \u548c\u7cfb\u7d71\u5de5\u7a0b\u5e2b\u5728\u8077\u696d\u751f\u6daf\u7684\u67d0\u500b\u968e\u6bb5\uff0c\u90fd\u66fe\u7de8\u5beb\u904e\u81ea\u8a02\u7684 Shell \u6307\u4ee4\u78bc\u4f86\u5099\u4efd\u8cc7\u6599\u5eab\u3002\u9019\u5e7e\u4e4e\u662f\u4e00\u7a2e\u5fc5\u7d93\u7684\u904e\u7a0b\u3002\u5728\u5c08\u6848\u521d\u671f\uff0c\u4e00\u500b\u7c21\u55ae\u7684 cron job \u57f7\u884c <code>mysqldump<\/code> \u6216 <code>pg_dump<\/code> \u4e26\u900f\u904e\u7ba1\u9053 (pipe) \u50b3\u8f38\u81f3 <code>gzip<\/code>\uff0c\u770b\u8d77\u4f86\u662f\u4e00\u500b\u512a\u96c5\u3001\u8f15\u91cf\u4e14\u5177\u6210\u672c\u6548\u76ca\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u7136\u800c\uff0c\u96a8\u8457\u57fa\u790e\u67b6\u69cb\u7684\u64f4\u5c55\u3001\u8cc7\u6599\u91cf\u7684\u589e\u9577\u4ee5\u53ca\u6b63\u5e38\u904b\u884c\u6642\u9593 (uptime) SLA \u8b8a\u5f97\u66f4\u52a0\u56b4\u683c\uff0c\u90a3 10 \u884c Bash \u6307\u4ee4\u78bc\u6703\u6084\u6084\u8b8a\u6210\u4e00\u9846\u5b9a\u6642\u70b8\u5f48\u3002\u751f\u7522\u74b0\u5883\u9700\u8981\u9ad8\u53ef\u7528\u6027\u3001\u56b4\u683c\u7684\u5fa9\u539f\u9ede\u76ee\u6a19 (RPO) \u4ee5\u53ca\u5feb\u901f\u7684\u5fa9\u539f\u6642\u9593\u76ee\u6a19 (RTO)\u3002\u5728\u9019\u4e9b\u74b0\u5883\u4e2d\u4f9d\u8cf4 DIY \u5099\u4efd\u6307\u4ee4\u78bc\uff0c\u6703\u5f15\u5165\u8207\u8cc7\u6599\u4e00\u81f4\u6027\u3001\u975c\u9ed8\u5931\u6557 (silent failures)\u3001\u5b89\u5168\u6f0f\u6d1e\u4ee5\u53ca\u7121\u6cd5\u7ba1\u7406\u7684\u5fa9\u539f\u6d41\u7a0b\u76f8\u95dc\u7684\u56b4\u91cd\u98a8\u96aa\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u5256\u6790 DIY \u8cc7\u6599\u5eab\u5099\u4efd\u6307\u4ee4\u78bc\u7684\u67b6\u69cb\u7f3a\u9677\u8207\u96b1\u85cf\u5371\u96aa\uff0c\u63a2\u8a0e\u908f\u8f2f\u5099\u4efd\u8207\u5be6\u9ad4\u5099\u4efd\u7684\u6280\u8853\u9677\u9631\uff0c\u4e26\u8a0e\u8ad6\u5982\u4f55\u8f49\u5411 CloudSave \u7b49\u4f01\u696d\u7d1a\u89e3\u6c7a\u65b9\u6848\uff0c\u4ee5\u4fdd\u8b77\u60a8\u7684\u95dc\u9375\u4efb\u52d9\u8cc7\u6599\u3002<\/p>\n<h2>\u7c21\u5316\u7684\u5e7b\u89ba\uff1a\u5256\u6790\u7d93\u5178\u7684 DIY \u6307\u4ee4\u78bc<\/h2>\n<p>\u70ba\u4e86\u7406\u89e3\u5176\u4e2d\u7684\u5371\u96aa\uff0c\u6211\u5011\u5fc5\u9808\u5148\u770b\u770b\u5178\u578b DIY \u5099\u4efd\u6307\u4ee4\u78bc\u7684\u7d50\u69cb\u3002MySQL \u8cc7\u6599\u5eab\u7684\u6a19\u6e96\u505a\u6cd5\u901a\u5e38\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code class=\"language-bash\">#!\/bin\/bash\n# \u7c21\u55ae\u7684 DIY MySQL \u5099\u4efd\u6307\u4ee4\u78bc\nBACKUP_DIR=\"\/mnt\/backups\"\nDATE=$(date +%F)\nDB_USER=\"admin\"\nDB_PASS=\"SuperSecret123!\"\n\nmysqldump -u $DB_USER -p$DB_PASS my_database | gzip &gt; $BACKUP_DIR\/mydb_$DATE.sql.gz\n\n# \u522a\u9664 30 \u5929\u524d\u7684\u5099\u4efd\nfind $BACKUP_DIR -type f -name \"*.sql.gz\" -mtime +30 -exec rm {} ;\n<\/code><\/pre>\n<p>\u4e4d\u770b\u4e4b\u4e0b\uff0c\u6b64\u6307\u4ee4\u78bc\u9054\u6210\u4e86\u76ee\u6a19\uff1a\u5b83\u63d0\u53d6\u8cc7\u6599\u3001\u9032\u884c\u58d3\u7e2e\u4e26\u7ba1\u7406\u4fdd\u7559\u671f\u9650\u3002\u4f46\u5728\u8868\u9762\u4e4b\u4e0b\uff0c\u5b83\u5145\u6eff\u4e86\u81f4\u547d\u7684\u7f3a\u9677\uff0c\u6700\u7d42\u5c07\u5c0e\u81f4\u751f\u7522\u74b0\u5883\u4e2d\u7684\u8cc7\u6599\u907a\u5931\u3002<\/p>\n<h2>\u5371\u96aa 1\uff1a\u975c\u9ed8\u5931\u6557\u8207\u7ba1\u9053\u9677\u9631<\/h2>\n<p>DIY \u6307\u4ee4\u78bc\u6700\u9670\u96aa\u7684\u5371\u96aa\u4e4b\u4e00\u5c31\u662f\u975c\u9ed8\u5931\u6557\u3002\u5728\u4e0a\u8ff0\u6307\u4ee4\u78bc\u4e2d\uff0c<code>mysqldump<\/code> \u6307\u4ee4\u76f4\u63a5\u900f\u904e\u7ba1\u9053 (<code>|<\/code>) \u50b3\u8f38\u81f3 <code>gzip<\/code>\u3002<\/p>\n<p>\u5728 Bash \u4e2d\uff0c\u7ba1\u9053\u7684\u9000\u51fa\u72c0\u614b\u662f\u7ba1\u9053\u4e2d<em>\u6700\u5f8c\u4e00\u500b<\/em>\u6307\u4ee4\u7684\u9000\u51fa\u72c0\u614b\u3002\u5982\u679c\u8cc7\u6599\u5eab\u4f3a\u670d\u5668\u5728\u8f49\u5132\u904e\u7a0b\u4e2d\u8a18\u61b6\u9ad4\u4e0d\u8db3\u3001\u9023\u7dda\u4e2d\u65b7\u6216\u9047\u5230\u9396\u5b9a\u7684\u8cc7\u6599\u8868\uff0c<code>mysqldump<\/code> \u5c07\u6703\u5931\u6557\u4e26\u62cb\u51fa\u932f\u8aa4\u3002\u7136\u800c\uff0c<code>gzip<\/code> \u6703\u6210\u529f\u58d3\u7e2e\u5b83\u6240\u63a5\u6536\u5230\u7684\u90e8\u5206\u8f38\u51fa\uff0c\u4e26\u4ee5\u72c0\u614b\u78bc <code>0<\/code>\uff08\u6210\u529f\uff09\u9000\u51fa\u3002<\/p>\n<p>\u60a8\u7684\u76e3\u63a7\u7cfb\u7d71\u5728\u6aa2\u67e5 cron job \u7684\u9000\u51fa\u4ee3\u78bc\u6642\uff0c\u6703\u56de\u5831\u5099\u4efd\u6210\u529f\u3002\u78c1\u789f\u4e0a\u78ba\u5be6\u6703\u6709\u4e00\u500b\u6709\u6548\u7684 <code>.gz<\/code> \u6a94\u6848\uff0c\u4f46\u88e1\u9762\u537b\u662f\u4e00\u500b\u88ab\u622a\u65b7\u3001\u6beb\u7121\u7528\u8655\u7684 SQL \u6a94\u6848\u3002\u76f4\u5230\u60a8\u5617\u8a66\u9032\u884c\u95dc\u9375\u5fa9\u539f\u6642\uff0c\u624d\u6703\u767c\u73fe\u9019\u500b\u554f\u984c\u3002<\/p>\n<h3>\u7de9\u89e3\u63aa\u65bd\uff08\u53ca\u5176\u4fb7\u9650\u6027\uff09<\/h3>\n<p>\u5de5\u7a0b\u5e2b\u901a\u5e38\u6703\u5617\u8a66\u900f\u904e\u5728 Bash \u4e2d\u555f\u7528\u56b4\u683c\u932f\u8aa4\u8655\u7406\u4f86\u4fee\u88dc\u6b64\u554f\u984c\uff1a<\/p>\n<pre><code class=\"language-bash\">set -e\nset -o pipefail\n<\/code><\/pre>\n<p>\u96d6\u7136 <code>set -o pipefail<\/code> \u53ef\u78ba\u4fdd\u82e5\u7ba1\u9053\u4e2d<em>\u4efb\u4f55<\/em>\u6307\u4ee4\u5931\u6557\uff0c\u6574\u500b\u6307\u4ee4\u78bc\u5c31\u6703\u5931\u6557\uff0c\u4f46\u5b83\u4ecd\u7136\u8981\u6c42\u60a8\u570d\u7e5e\u6307\u4ee4\u78bc\u5efa\u7acb\u5f37\u5927\u7684\u8b66\u5831\u3001\u65e5\u8a8c\u8a18\u9304\u548c\u91cd\u8a66\u6a5f\u5236\u3002\u7576\u77ed\u66ab\u7684\u7db2\u8def\u932f\u8aa4\u5728\u51cc\u6668 2:00 \u5c0e\u81f4\u5931\u6557\u6642\uff0cDIY \u6307\u4ee4\u78bc\u53ea\u6703\u76f4\u63a5\u7d42\u6b62\u3002\u4f01\u696d\u7d1a\u5e73\u53f0\u5247\u6703\u900f\u904e\u667a\u6167\u578b\u6307\u6578\u9000\u907f\u91cd\u8a66 (exponential backoff retries) \u4f86\u8655\u7406\u9019\u4e9b\u66ab\u6642\u6027\u932f\u8aa4\u3002<\/p>\n<h2>\u5371\u96aa 2\uff1a\u8cc7\u6599\u4e00\u81f4\u6027\u8207\u9396\u5b9a\u5669\u5922<\/h2>\n<p>DIY \u6307\u4ee4\u78bc\u56b4\u91cd\u4f9d\u8cf4\u908f\u8f2f\u5099\u4efd (<code>mysqldump<\/code>, <code>pg_dump<\/code>)\u3002\u908f\u8f2f\u5099\u4efd\u900f\u904e\u5728\u6240\u6709\u8cc7\u6599\u8868\u4e0a\u57f7\u884c <code>SELECT<\/code> \u9673\u8ff0\u5f0f\u4f86\u63d0\u53d6\u8cc7\u6599\u3002\u5728\u9ad8\u5ea6\u4ea4\u6613\u7684\u751f\u7522\u8cc7\u6599\u5eab\u4e2d\uff0c\u8cc7\u6599\u662f\u4e0d\u65b7\u8b8a\u5316\u7684\u3002\u5982\u679c\u4e00\u500b\u6307\u4ee4\u78bc\u9700\u8981 45 \u5206\u9418\u4f86\u8f49\u5132 100GB \u7684\u8cc7\u6599\u5eab\uff0c\u90a3\u9ebc\u8f49\u5132\u958b\u59cb\u6642\u7684\u8cc7\u6599\u5c07\u6bd4\u7d50\u675f\u6642\u7684\u8cc7\u6599\u820a 45 \u5206\u9418\uff0c\u9019\u9055\u53cd\u4e86 ACID \u5408\u898f\u6027\u3002<\/p>\n<h3>MySQL \u4ea4\u6613\u4e00\u81f4\u6027<\/h3>\n<p>\u82e5\u8981\u5728 MySQL \u4e2d\u4f7f\u7528 InnoDB \u5be6\u73fe\u4e00\u81f4\u7684\u5feb\u7167\uff0c\u60a8\u5fc5\u9808\u50b3\u905e\u7279\u5b9a\u7684\u65d7\u6a19\uff1a<\/p>\n<pre><code class=\"language-bash\">mysqldump --single-transaction --quick --routines --events -u user -p db &gt; dump.sql\n<\/code><\/pre>\n<p><code>--single-transaction<\/code> \u65d7\u6a19\u6703\u5c07\u9694\u96e2\u5c64\u7d1a\u8a2d\u5b9a\u70ba <code>REPEATABLE READ<\/code>\uff0c\u4e26\u5728\u8f49\u5132\u524d\u555f\u52d5\u4e00\u500b\u4ea4\u6613\u3002\u7136\u800c\uff0c\u5982\u679c\u60a8\u7684\u8cc7\u6599\u5eab\u4ecd\u5305\u542b\u820a\u7248\u7684 MyISAM \u8cc7\u6599\u8868\uff0c\u6b64\u65d7\u6a19\u5c07\u7121\u6cd5\u9632\u6b62\u5b83\u5011\u88ab\u9396\u5b9a\uff0c\u53ef\u80fd\u6703\u5728\u5099\u4efd\u57f7\u884c\u6642\u66ab\u505c\u751f\u7522\u74b0\u5883\u7684\u8b80\u5beb\u6d41\u91cf\u3002\u6b64\u5916\uff0c\u958b\u767c\u4eba\u54e1\u5728\u5099\u4efd\u671f\u9593\u57f7\u884c\u7684\u4efb\u4f55 <code>ALTER TABLE<\/code>\u3001<code>DROP TABLE<\/code> \u6216 <code>RENAME TABLE<\/code> \u9673\u8ff0\u5f0f\u90fd\u6703\u7834\u58de <code>REPEATABLE READ<\/code> \u5feb\u7167\uff0c\u5c0e\u81f4\u8f49\u5132\u5931\u6557\u3002<\/p>\n<h3>PostgreSQL \u8207 WAL \u6b78\u6a94<\/h3>\n<p>\u5c0d\u65bc PostgreSQL\uff0c<code>pg_dump<\/code> \u63d0\u4f9b\u4e86\u4e00\u81f4\u7684\u908f\u8f2f\u5099\u4efd\uff0c\u4f46\u50c5\u9760\u908f\u8f2f\u5099\u4efd\u7121\u6cd5\u63d0\u4f9b\u6642\u9593\u9ede\u5fa9\u539f (PITR)\u3002\u5982\u679c\u60a8\u7684\u8cc7\u6599\u5eab\u5728\u4e0b\u5348 4:00 \u7576\u6a5f\uff0c\u800c\u60a8\u4e0a\u4e00\u6b21\u7684 cron \u6307\u4ee4\u78bc\u662f\u5728\u5348\u591c\u57f7\u884c\u7684\uff0c\u60a8\u5c07\u907a\u5931 16 \u5c0f\u6642\u7684\u8cc7\u6599\u3002<\/p>\n<p>\u5be6\u73fe PITR \u9700\u8981\u6301\u7e8c\u6b78\u6a94\u9810\u5beb\u5f0f\u8a18\u9304 (Write-Ahead Logs, WAL)\u3002\u7de8\u5beb\u4e00\u500b\u80fd\u5b89\u5168\u8655\u7406 <code>archive_command<\/code> \u7684 DIY \u6307\u4ee4\u78bc\u662f\u975e\u5e38\u56f0\u96e3\u7684\u3002<\/p>\n<pre><code class=\"language-ini\"># postgresql.conf\nwal_level = replica\narchive_mode = on\narchive_command = 'test ! -f \/mnt\/wal_archive\/%f &amp;&amp; cp %p \/mnt\/wal_archive\/%f'\n<\/code><\/pre>\n<p>\u5982\u679c\u76ee\u6a19\u5132\u5b58\u7a7a\u9593 (<code>\/mnt\/wal_archive\/<\/code>) \u5df2\u6eff\u6216\u7121\u6cd5\u5b58\u53d6\uff0c<code>archive_command<\/code> \u5c07\u6703\u5931\u6557\u3002PostgreSQL \u96a8\u5f8c\u6703\u5c07 WAL \u6a94\u6848\u4fdd\u7559\u5728\u672c\u5730\uff0c\u76f4\u5230\u4e3b\u78c1\u789f\u7a7a\u9593\u8017\u76e1\uff0c\u5c0e\u81f4\u8cc7\u6599\u5eab\u5b8c\u5168\u505c\u6a5f\u3002DIY \u6307\u4ee4\u78bc\u5f88\u5c11\u5177\u5099\u76e3\u63a7 WAL \u7d2f\u7a4d\u4e26\u5728\u505c\u6a5f\u767c\u751f\u524d\u901a\u77e5\u7ba1\u7406\u54e1\u6240\u9700\u7684\u9059\u6e2c\u529f\u80fd\u3002<\/p>\n<h2>\u5371\u96aa 3\uff1a\u4fdd\u7559\u7b56\u7565\u7684\u8ced\u535a<\/h2>\n<p>\u56de\u982d\u770b\u770b\u6211\u5011\u521d\u59cb\u6307\u4ee4\u78bc\u4e2d\u7684\u4fdd\u7559\u6307\u4ee4\uff1a<\/p>\n<pre><code class=\"language-bash\">find $BACKUP_DIR -type f -name \"*.sql.gz\" -mtime +30 -exec rm {} ;\n<\/code><\/pre>\n<p>\u9019\u662f\u4e00\u5834\u5373\u5c07\u767c\u751f\u7684\u707d\u96e3\u6027\u8cc7\u6599\u907a\u5931\u4e8b\u4ef6\u3002\u60f3\u50cf\u4e00\u4e0b\uff0c\u5982\u679c\u914d\u7f6e\u8b8a\u66f4\u5c0e\u81f4 <code>mysqldump<\/code> \u9a57\u8b49\u5931\u6557\u3002\u6307\u4ee4\u78bc\u7121\u6cd5\u5efa\u7acb\u65b0\u7684\u5099\u4efd\uff0c\u4f46 <code>find<\/code> \u6307\u4ee4\u4ecd\u6703\u6bcf\u665a\u57f7\u884c\uff0c\u5fe0\u5be6\u5730\u522a\u9664 30 \u5929\u524d\u7684\u6a94\u6848\u3002<\/p>\n<p>\u5728\u5099\u4efd\u5931\u6557 30 \u5929\u5f8c\uff0c<code>find<\/code> \u6307\u4ee4\u5c07\u522a\u9664\u60a8\u6700\u5f8c\u50c5\u5b58\u7684\u826f\u597d\u5099\u4efd\u3002\u60a8\u73fe\u5728\u5c07\u9762\u81e8\u96f6\u5099\u4efd\u7684\u7a98\u5883\u3002<\/p>\n<p>\u50cf CloudSave \u9019\u6a23\u7684\u4f01\u696d\u7d1a\u5099\u4efd\u8edf\u9ad4\u4f7f\u7528\u5177\u5099\u72c0\u614b\u7684\u4fdd\u7559\u7b56\u7565\u3002\u5b83\u80fd\u5340\u5206\u300c\u522a\u9664 30 \u5929\u524d\u7684\u5099\u4efd\u300d\u8207\u300c\u78ba\u4fdd\u5728\u522a\u9664\u820a\u8cc7\u6599\u524d\u81f3\u5c11\u5b58\u5728 30 \u500b\u6210\u529f\u7684\u5fa9\u539f\u9ede\u300d\u3002<\/p>\n<h2>\u5371\u96aa 4\uff1a\u5b89\u5168\u6027\u3001\u52a0\u5bc6\u8207\u5408\u898f\u6027\u76f2\u9ede<\/h2>\n<p>\u5728\u52d2\u7d22\u8edf\u9ad4\u8207\u56b4\u683c\u5408\u898f\u6846\u67b6\uff08GDPR\u3001HIPAA\u3001SOC 2\uff09\u7684\u6642\u4ee3\uff0c\u5099\u4efd\u662f\u4e3b\u8981\u7684\u653b\u64ca\u76ee\u6a19\u3002DIY \u6307\u4ee4\u78bc\u7d93\u5e38\u9055\u53cd\u5b89\u5168\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ol>\n<li><strong>\u786c\u7de8\u78bc\u6191\u8b49\uff1a<\/strong> \u5c07\u8cc7\u6599\u5eab\u5bc6\u78bc\u5132\u5b58\u5728\u7d14\u6587\u5b57\u6307\u4ee4\u78bc\u6216 cron \u5b9a\u7fa9\u4e2d\u662f\u5de8\u5927\u7684\u5b89\u5168\u98a8\u96aa\u3002\u96d6\u7136 MySQL \u7684 <code>mysql_config_editor<\/code> \u6216 PostgreSQL \u7684 <code>.pgpass<\/code> \u6a94\u6848\u7b49\u5de5\u5177\u53ef\u4ee5\u7de9\u89e3\u6b64\u554f\u984c\uff0c\u4f46\u5b83\u5011\u4ecd\u9700\u8981\u5728\u4f3a\u670d\u5668\u4e0a\u7ba1\u7406\u672c\u5730\u91d1\u9470\u6a94\u6848\u3002<\/li>\n<li><strong>\u7f3a\u4e4f\u975c\u614b\u52a0\u5bc6\uff1a<\/strong> \u5c07\u539f\u59cb SQL \u8f49\u5132\u5230\u78c1\u789f\u6703\u4f7f\u654f\u611f\u7684 PII\/PHI \u8cc7\u6599\u66b4\u9732\u3002<\/li>\n<li><strong>\u8907\u96dc\u7684\u52a0\u5bc6\u7ba1\u9053\uff1a<\/strong> \u5617\u8a66\u4f7f\u7528 GPG \u5373\u6642\u52a0\u5bc6\u5099\u4efd\u6703\u5f15\u5165\u56b4\u91cd\u7684 CPU \u958b\u92b7\u8207\u91d1\u9470\u7ba1\u7406\u8907\u96dc\u6027\u3002<\/li>\n<\/ol>\n<pre><code class=\"language-bash\"># \u4e00\u500b DIY \u52a0\u5bc6\u5099\u4efd\u7ba1\u9053\npg_dump mydb | gzip | gpg --symmetric --cipher-algo AES256 --passphrase-file \/etc\/keys\/backup.key &gt; backup.sql.gz.gpg\n<\/code><\/pre>\n<p>\u5982\u679c\u4f3a\u670d\u5668\u906d\u5230\u5165\u4fb5\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u540c\u6642\u5b58\u53d6\u52a0\u5bc6\u5099\u4efd\u8207 <code>\/etc\/keys\/backup.key<\/code> \u6a94\u6848\uff0c\u4f7f\u52a0\u5bc6\u5f62\u540c\u865b\u8a2d\u3002\u6b64\u5916\uff0c\u5982\u679c\u7522\u751f GPG \u91d1\u9470\u7684 DBA \u96e2\u8077\u4e14\u91d1\u9470\u907a\u5931\uff0c\u5099\u4efd\u5c07\u7121\u6cd5\u5fa9\u539f\u3002<\/p>\n<h2>\u5371\u96aa 5\uff1aRTO \u73fe\u5be6\u6aa2\u9a57\uff08\u5fa9\u539f\u6bd4\u5099\u4efd\u66f4\u96e3\uff09<\/h2>\n<p>\u5099\u4efd\u7684\u7d42\u6975\u6e2c\u8a66\u5728\u65bc\u5fa9\u539f\u3002DIY \u6307\u4ee4\u78bc\u7522\u751f\u7684\u908f\u8f2f\u5099\u4efd\u4ee5\u5fa9\u539f\u901f\u5ea6\u6975\u6162\u800c\u805e\u540d\u3002\u5efa\u7acb\u4e00\u500b 500GB \u7684 SQL \u8f49\u5132\u53ef\u80fd\u53ea\u9700 15 \u5206\u9418\uff0c\u4f46\u5fa9\u539f\u5b83\u9700\u8981\u8cc7\u6599\u5eab\u5f15\u64ce\u89e3\u6790 SQL\u3001\u91cd\u5efa\u7d22\u5f15\u4e26\u91cd\u65b0\u8a08\u7b97\u7d04\u675f\u3002\u9019\u53ef\u80fd\u9700\u8981\u6578\u5c0f\u6642\u751a\u81f3\u6578\u5929\uff0c\u5fb9\u5e95\u6467\u6bc0\u60a8\u7684 RTO\u3002<\/p>\n<p>\u5c0d\u65bc\u5927\u578b\u751f\u7522\u8cc7\u6599\u5eab\uff0c\u5be6\u9ad4\u5099\u4efd\uff08\u8907\u88fd\u5be6\u969b\u7684\u8cc7\u6599\u6a94\u6848\uff09\u662f\u5f37\u5236\u6027\u7684\u3002\u96d6\u7136\u5b58\u5728 Percona XtraBackup \u6216 <code>pg_basebackup<\/code> \u7b49\u5de5\u5177\uff0c\u4f46\u5c07\u5b83\u5011\u5c01\u88dd\u5728 DIY Bash \u6307\u4ee4\u78bc\u4e2d\u975e\u5e38\u8907\u96dc\u3002\u60a8\u5fc5\u9808\u7ba1\u7406 LVM \u5feb\u7167\u3001\u8655\u7406\u6a94\u6848\u7cfb\u7d71\u975c\u6b62 (quiescing)\uff0c\u4e26\u78ba\u4fdd\u5099\u4efd\u5728\u4e0d\u4f54\u6eff\u7db2\u8def\u4ecb\u9762\u7684\u60c5\u6cc1\u4e0b\u50b3\u8f38\u5230\u7570\u5730\u3002<\/p>\n<h3>LVM \u5feb\u7167\u9677\u9631<\/h3>\n<p>\u8a31\u591a\u5de5\u7a0b\u5e2b\u5617\u8a66\u4f7f\u7528 LVM \u5feb\u7167\u9032\u884c\u300c\u96f6\u505c\u6a5f\u300d\u5be6\u9ad4\u5099\u4efd\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u5efa\u7acb\u5feb\u7167\nlvcreate --size 20G --snapshot --name db_snap \/dev\/vg0\/db_vol\n\n# \u639b\u8f09\u4e26\u8907\u88fd\nmount \/dev\/vg0\/db_snap \/mnt\/snap\ntar -czf \/backups\/db_physical.tar.gz \/mnt\/snap\/mysql\n<\/code><\/pre>\n<p>\u5982\u679c\u8cc7\u6599\u5eab\u7d93\u6b77\u4e86\u5beb\u5165 I\/O \u7684\u7a81\u7136\u6fc0\u589e\uff0c20G \u7684 LVM \u5feb\u7167\u53ef\u80fd\u6703\u77ac\u9593\u586b\u6eff\u3002\u7576 LVM \u5feb\u7167\u586b\u6eff\u6642\uff0c\u5b83\u6703\u5931\u6548\uff0c\u5099\u4efd\u4e5f\u6703\u5931\u6557\u3002\u66f4\u7cdf\u7684\u662f\uff0c\u904e\u5ea6\u4f7f\u7528\u7684 LVM \u5feb\u7167\u6703\u56b4\u91cd\u964d\u4f4e\u4e3b\u8cc7\u6599\u5eab\u78c1\u789f\u5340\u7684 I\/O \u6548\u80fd\uff0c\u5c0e\u81f4\u61c9\u7528\u7a0b\u5f0f\u5ef6\u9072\u6fc0\u589e\u3002<\/p>\n<h2>\u8f49\u5411\u4f01\u696d\u7d1a\u4fdd\u8b77<\/h2>\n<p>\u5f9e DIY \u6307\u4ee4\u78bc\u8f49\u5411\u4f01\u696d\u7d1a\u5e73\u53f0\u662f\u4efb\u4f55\u57fa\u790e\u67b6\u69cb\u5718\u968a\u6210\u719f\u7684\u95dc\u9375\u91cc\u7a0b\u7891\u3002\u76ee\u6a19\u662f\u5f9e\u300c\u7948\u79b1\u6307\u4ee4\u78bc\u80fd\u57f7\u884c\u300d\u8f49\u8b8a\u70ba\u64c1\u6709\u53ef\u5fa9\u539f\u6027\u7684\u52a0\u5bc6\u8b49\u660e\u3002<\/p>\n<p>CloudSave \u7b49\u5e73\u53f0\u5c08\u70ba\u6d88\u9664 DIY \u6307\u4ee4\u78bc\u7684\u76f2\u9ede\u800c\u8a2d\u8a08\u3002\u900f\u904e\u90e8\u7f72\u61c9\u7528\u7a0b\u5f0f\u611f\u77e5\u4ee3\u7406 (application-aware agents)\uff0cCloudSave \u76f4\u63a5\u8207\u8cc7\u6599\u5eab API (MySQL, PostgreSQL, MS SQL, Oracle) \u4e92\u52d5\uff0c\u4ee5\u7de8\u6392\u4e00\u81f4\u7684\u5be6\u9ad4\u8207\u908f\u8f2f\u5099\u4efd\uff0c\u800c\u7121\u9700\u9396\u5b9a\u8cc7\u6599\u8868\u6216\u964d\u4f4e\u6548\u80fd\u3002<\/p>\n<h3>\u64fa\u812b\u6307\u4ee4\u78bc\u7684\u4e3b\u8981\u512a\u52e2\uff1a<\/h3>\n<ol>\n<li><strong>\u81ea\u52d5\u5316\u9a57\u8b49\uff1a<\/strong> \u73fe\u4ee3\u5e73\u53f0\u4e0d\u50c5\u50c5\u662f\u9032\u884c\u5099\u4efd\uff0c\u5b83\u5011\u9084\u6703\u9032\u884c\u6e2c\u8a66\u3002CloudSave \u53ef\u4ee5\u81ea\u52d5\u555f\u52d5\u4e00\u500b\u81e8\u6642\u8cc7\u6599\u5eab\u57f7\u884c\u500b\u9ad4\u3001\u5fa9\u539f\u5099\u4efd\u3001\u57f7\u884c\u4e00\u81f4\u6027\u6aa2\u67e5\uff08\u4f8b\u5982 <code>DBCC CHECKDB<\/code>\uff09\uff0c\u7136\u5f8c\u5c07\u5176\u522a\u9664\uff0c\u4e26\u63d0\u4f9b\u4e00\u4efd\u8b49\u660e\u5099\u4efd\u78ba\u5be6\u53ef\u7528\u7684\u9a57\u8b49\u5831\u544a\u3002<\/li>\n<li><strong>\u4e0d\u53ef\u8b8a\u5132\u5b58\uff1a<\/strong> \u70ba\u4e86\u5c0d\u6297\u52d2\u7d22\u8edf\u9ad4\uff0c\u5099\u4efd\u5fc5\u9808\u662f\u4e0d\u53ef\u8b8a\u7684\u3002DIY \u6307\u4ee4\u78bc\u7121\u6cd5\u8f15\u6613\u5beb\u5165 WORM\uff08\u4e00\u6b21\u5beb\u5165\uff0c\u591a\u6b21\u8b80\u53d6\uff09\u5132\u5b58\u7a7a\u9593\u3002\u4f01\u696d\u7d1a\u89e3\u6c7a\u65b9\u6848\u539f\u751f\u6574\u5408\u4e86 S3 \u7269\u4ef6\u9396\u5b9a\u8207\u4e0d\u53ef\u8b8a\u96f2\u7aef\u5132\u5b58\uff0c\u78ba\u4fdd\u5373\u4f7f\u4f3a\u670d\u5668\u5b8c\u5168\u88ab\u5165\u4fb5\uff0c\u5099\u4efd\u4e5f\u4e0d\u6703\u88ab\u653b\u64ca\u8005\u522a\u9664\u6216\u52a0\u5bc6\u3002<\/li>\n<li><strong>\u7c21\u5316\u7684 PITR\uff1a<\/strong> \u5e73\u53f0\u63d0\u4f9b\u8996\u89ba\u5316\u6642\u9593\u8ef8\uff0c\u800c\u975e\u4f7f\u7528\u8907\u96dc\u7684 <code>recovery.conf<\/code> \u6216 <code>postgresql.auto.conf<\/code> \u53c3\u6578\u624b\u52d5\u62fc\u6e4a\u57fa\u790e\u5099\u4efd\u8207\u6578\u767e\u500b WAL \u6a94\u6848\u3002\u60a8\u53ea\u9700\u9078\u64c7\u60f3\u8981\u5fa9\u539f\u5230\u7684\u78ba\u5207\u6642\u9593\u9ede\uff0c\u8edf\u9ad4\u5c31\u6703\u81ea\u52d5\u8655\u7406\u8a18\u9304\u91cd\u64ad\u3002<\/li>\n<li><strong>\u91cd\u8907\u8cc7\u6599\u522a\u9664\u8207\u58d3\u7e2e\uff1a<\/strong> DIY \u6307\u4ee4\u78bc\u4f9d\u8cf4 <code>gzip<\/code>\uff0c\u5b83\u6703\u55ae\u7368\u58d3\u7e2e\u6bcf\u500b\u6a94\u6848\u3002\u4f01\u696d\u7d1a\u5099\u4efd\u8edf\u9ad4\u5229\u7528\u5168\u57df\u5340\u584a\u7d1a\u91cd\u8907\u8cc7\u6599\u522a\u9664\uff0c\u5728\u5c07\u5099\u4efd\u50b3\u8f38\u5230\u7570\u5730\u6642\u5927\u5e45\u964d\u4f4e\u5132\u5b58\u6210\u672c\u8207\u7db2\u8def\u983b\u5bec\u3002<\/li>\n<\/ol>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u7de8\u5beb\u4e00\u500b\u81ea\u8a02 Bash \u6307\u4ee4\u78bc\u4f86\u5099\u4efd\u8cc7\u6599\u5eab\u5f88\u5bb9\u6613\u3002\u4f46\u8981\u7de8\u5beb\u4e00\u500b\u80fd\u8655\u7406\u975c\u9ed8\u7ba1\u9053\u5931\u6557\u3001\u4fdd\u8b49 ACID \u4e00\u81f4\u6027\u3001\u5b89\u5168\u7ba1\u7406\u52a0\u5bc6\u91d1\u9470\u3001\u9632\u6b62\u57fa\u65bc\u4fdd\u7559\u7b56\u7565\u7684\u8cc7\u6599\u907a\u5931\uff0c\u4e26\u4fdd\u8b49\u56b4\u683c RTO\/RPO SLA \u7684\u6307\u4ee4\u78bc\uff0c\u5e7e\u4e4e\u662f\u4e0d\u53ef\u80fd\u7684\u3002<\/p>\n<p>\u5728\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u8cc7\u6599\u5eab\u662f\u4f01\u696d\u6700\u91cd\u8981\u7684\u8cc7\u7522\u3002\u5c07\u5176\u4fdd\u8b77\u8996\u70ba\u7531\u5e7e\u767e\u884c Shell \u6307\u4ee4\u78bc\u7dad\u8b77\u7684\u526f\u5c08\u6848\uff0c\u662f\u4efb\u4f55\u4f01\u696d\u90fd\u7121\u6cd5\u627f\u64d4\u7684\u98a8\u96aa\u3002\u900f\u904e\u5be9\u6838\u60a8\u76ee\u524d\u7684\u5099\u4efd\u7b56\u7565\u3001\u4e86\u89e3\u908f\u8f2f\u8f49\u5132\u7684\u4fb7\u9650\u6027\uff0c\u4e26\u9077\u79fb\u5230 CloudSave \u7b49\u5f37\u5927\u4e14\u81ea\u52d5\u5316\u7684\u5e73\u53f0\uff0cDevOps \u8207 DBA \u5718\u968a\u53ef\u4ee5\u6d88\u9664\u81ea\u8a02\u6307\u4ee4\u78bc\u5e36\u4f86\u7684\u300c\u5df4\u58eb\u56e0\u5b50\u300d(bus factor)\uff0c\u4e26\u78ba\u4fdd\u8cc7\u6599\u771f\u6b63\u5177\u6709\u97cc\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>** Discover the hidden dangers of DIY database backup scripts. Learn why custom Bash scripts fail in production, the risks of logical dumps, and how to secure your data with enterprise solutions.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Why DIY Database Backup Scripts Fail in Production","rank_math_description":"** Discover the hidden dangers of DIY database backup scripts. Learn why custom Bash scripts fail in production, the risks of logical dumps, and how to secure your data with enterprise solutions.","rank_math_focus_keyword":"DIY database backup scripts","footnotes":""},"categories":[367],"tags":[2545,878,2546,2547,2548,2549,882],"class_list":["post-3814","post","type-post","status-publish","format-standard","hentry","category-database-backup","tag-bash-scripts","tag-database-administration","tag-diy-backups","tag-mysqldump","tag-pg_dump","tag-production-backups","tag-rpo-and-rto"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why DIY Database Backup Scripts Fail in Production<\/title>\n<meta name=\"description\" content=\"** Discover the hidden dangers of DIY database backup scripts. 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