{"id":4444,"date":"2026-06-14T19:31:12","date_gmt":"2026-06-14T19:31:12","guid":{"rendered":"https:\/\/cloudsave.app\/?p=4444"},"modified":"2026-06-15T14:04:15","modified_gmt":"2026-06-15T14:04:15","slug":"%e7%82%ba%e4%bb%80%e9%ba%bc-mysqldump-%e7%84%a1%e6%b3%95%e8%99%95%e7%90%86%e6%82%a8%e7%9a%84%e5%a4%a7%e5%9e%8b-mysql-%e8%b3%87%e6%96%99%e5%ba%ab-%e4%bb%a5%e5%8f%8a%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba","status":"publish","type":"post","link":"https:\/\/cloudsave.app\/zh-hant\/knowledge-base\/%e7%82%ba%e4%bb%80%e9%ba%bc-mysqldump-%e7%84%a1%e6%b3%95%e8%99%95%e7%90%86%e6%82%a8%e7%9a%84%e5%a4%a7%e5%9e%8b-mysql-%e8%b3%87%e6%96%99%e5%ba%ab-%e4%bb%a5%e5%8f%8a%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba\/","title":{"rendered":"\u70ba\u4ec0\u9ebc mysqldump \u7121\u6cd5\u8655\u7406\u60a8\u7684\u5927\u578b MySQL \u8cc7\u6599\u5eab\uff08\u4ee5\u53ca\u5982\u4f55\u89e3\u6c7a\uff09"},"content":{"rendered":"<p>\u6578\u5341\u5e74\u4f86\uff0c<code>mysqldump<\/code> \u4e00\u76f4\u662f MySQL \u8cc7\u6599\u5eab\u5099\u4efd\u9818\u57df\u4e2d\u7121\u53ef\u722d\u8b70\u7684\u300c\u745e\u58eb\u5200\u300d\u3002\u5b83\u7121\u8655\u4e0d\u5728\u3001\u7c21\u55ae\u76f4\u63a5\uff0c\u4e14\u9810\u88dd\u5728\u6bcf\u500b MySQL \u548c MariaDB \u767c\u884c\u7248\u4e2d\u3002\u5c0d\u65bc\u4e2d\u5c0f\u578b\u8cc7\u6599\u5eab\u800c\u8a00\uff0c\u5b83\u7684\u8868\u73fe\u76f8\u7576\u51fa\u8272\u3002<\/p>\n<p>\u7136\u800c\uff0c\u96a8\u8457\u7d44\u7e54\u898f\u6a21\u64f4\u5927\uff0c\u8cc7\u6599\u96c6\u7a81\u7834 100GB\u3001500GB \u751a\u81f3\u6578 TB \u7684\u9580\u6abb\uff0c\u4f9d\u8cf4 <code>mysqldump<\/code> \u5df2\u5f9e\u6700\u4f73\u5be6\u8e10\u8f49\u8b8a\u70ba\u56b4\u91cd\u7684\u67b6\u69cb\u6f0f\u6d1e\u3002\u5982\u679c\u60a8\u662f\u7ba1\u7406\u5927\u898f\u6a21\u751f\u7522\u8cc7\u6599\u5eab\u7684 DBA \u6216 DevOps \u5de5\u7a0b\u5e2b\uff0c\u60a8\u53ef\u80fd\u5df2\u7d93\u9ad4\u9a57\u904e\u8207\u908f\u8f2f\u5099\u4efd\u76f8\u95dc\u7684\u975c\u9ed8\u5931\u6557\u3001\u751f\u7522\u74b0\u5883\u6548\u80fd\u4e0b\u964d\u4ee5\u53ca\u7121\u6cd5\u63a5\u53d7\u7684\u5fa9\u539f\u6642\u9593\u76ee\u6a19 (RTO)\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u5256\u6790 <code>mysqldump<\/code> \u7684\u67b6\u69cb\u9650\u5236\uff0c\u63a2\u8a0e\u5b83\u70ba\u4f55\u7121\u6cd5\u61c9\u5c0d\u5927\u898f\u6a21\u9700\u6c42\uff0c\u4e26\u8a73\u7d30\u8aaa\u660e\u5982\u4f55\u5be6\u65bd\u4f01\u696d\u7d1a\u7684\u5be6\u9ad4\u5099\u4efd\u7b56\u7565\uff0c\u4ee5\u4fdd\u8b77\u60a8\u7684\u95dc\u9375\u4efb\u52d9\u8cc7\u6599\u3002<\/p>\n<h2>mysqldump \u7684\u67b6\u69cb\u9650\u5236<\/h2>\n<p>\u8981\u4e86\u89e3\u70ba\u4ec0\u9ebc <code>mysqldump<\/code> \u5728\u5927\u898f\u6a21\u74b0\u5883\u4e0b\u6703\u5931\u6557\uff0c\u6211\u5011\u5fc5\u9808\u6aa2\u8996\u5176\u5e95\u5c64\u904b\u4f5c\u65b9\u5f0f\u3002<code>mysqldump<\/code> \u57f7\u884c\u7684\u662f<strong>\u908f\u8f2f\u5099\u4efd<\/strong>\u3002\u5b83\u67e5\u8a62\u8cc7\u6599\u5eab\u5f15\u64ce\u3001\u8b80\u53d6\u8cc7\u6599\uff0c\u4e26\u5c07\u5176\u8f49\u63db\u70ba\u4e00\u7cfb\u5217 SQL \u9673\u8ff0\u5f0f\uff08\u4e3b\u8981\u662f <code>CREATE TABLE<\/code> \u548c <code>INSERT INTO<\/code>\uff09\u3002<\/p>\n<p>\u96d6\u7136\u9019\u80fd\u7522\u751f\u9ad8\u5ea6\u53ef\u651c\u4e14\u4eba\u985e\u53ef\u8b80\u7684\u6a94\u6848\uff0c\u4f46\u5728\u9ad8\u541e\u5410\u91cf\u74b0\u5883\u4e2d\uff0c\u9019\u6703\u5f15\u5165\u56b4\u91cd\u7684\u74f6\u9838\u3002<\/p>\n<h3>1. \u55ae\u57f7\u884c\u7dd2\u74f6\u9838<\/h3>\n<p>\u6839\u64da\u8a2d\u8a08\uff0c<code>mysqldump<\/code> \u662f\u4e00\u500b\u55ae\u57f7\u884c\u7dd2\u64cd\u4f5c\u3002\u5b83\u4e00\u6b21\u8655\u7406\u4e00\u500b\u8cc7\u6599\u8868\uff0c\u9010\u5217\u9032\u884c\u3002\u96d6\u7136\u73fe\u4ee3\u786c\u9ad4\u64c1\u6709\u6578\u5341\u500b CPU \u6838\u5fc3\u548c\u6bcf\u79d2\u53ef\u9054\u6578 GB \u541e\u5410\u91cf\u7684 NVMe \u5132\u5b58\u88dd\u7f6e\uff0c\u4f46 <code>mysqldump<\/code> \u50c5\u5229\u7528\u4e86\u9019\u4e9b\u8cc7\u6e90\u7684\u4e00\u5c0f\u90e8\u5206\u3002<\/p>\n<p>\u5373\u4f7f\u5728\u4f7f\u7528 InnoDB \u8cc7\u6599\u8868\u7684\u6a19\u6e96\u65d7\u6a19\u6642\uff1a<\/p>\n<pre><code class=\"language-bash\">mysqldump -u root -p --single-transaction --routines --triggers --events --quick production_db &gt; backup.sql\n<\/code><\/pre>\n<p><code>--quick<\/code> \u65d7\u6a19\u5f37\u5236 <code>mysqldump<\/code> \u9010\u5217\u64f7\u53d6\u8cc7\u6599\uff0c\u800c\u4e0d\u662f\u5c07\u6574\u500b\u8cc7\u6599\u8868\u7de9\u885d\u5728\u8a18\u61b6\u9ad4\u4e2d\uff0c\u9019\u53ef\u4ee5\u9632\u6b62\u7528\u6236\u7aef\u51fa\u73fe\u8a18\u61b6\u9ad4\u4e0d\u8db3 (OOM) \u932f\u8aa4\u3002\u7136\u800c\uff0c\u55ae\u57f7\u884c\u7dd2\u7684\u7279\u6027\u610f\u5473\u8457\u4e00\u500b 500GB \u7684\u8cc7\u6599\u5eab\u53ef\u80fd\u9700\u8981 10 \u5230 15 \u500b\u5c0f\u6642\u624d\u80fd\u5b8c\u6210\u5099\u4efd\uff0c\u9019\u6703\u56b4\u91cd\u5f71\u97ff\u60a8\u7684\u5fa9\u539f\u9ede\u76ee\u6a19 (RPO)\u3002<\/p>\n<h3>2. InnoDB \u7de9\u885d\u6c60\u6c61\u67d3<\/h3>\n<p>\u7576 <code>mysqldump<\/code> \u8b80\u53d6\u6bcf\u500b\u8cc7\u6599\u8868\u7684\u6bcf\u4e00\u5217\u6642\uff0c\u5b83\u6703\u5f37\u5236 MySQL \u5f15\u64ce\u5c07\u9019\u4e9b\u8cc7\u6599\u5f9e\u78c1\u789f\u8f09\u5165\u5230 InnoDB \u7de9\u885d\u6c60\u4e2d\u3002\u5728\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u60a8\u7684\u7de9\u885d\u6c60\u901a\u5e38\u7cbe\u5fc3\u5b58\u653e\u8457\u300c\u71b1\u300d\u5de5\u4f5c\u8cc7\u6599\u96c6\u3002<\/p>\n<p>\u5927\u898f\u6a21\u7684\u908f\u8f2f\u5099\u4efd\u6703\u6383\u904e\u7de9\u885d\u6c60\uff0c\u5c07\u983b\u7e41\u5b58\u53d6\u7684\u7d22\u5f15\u548c\u8cc7\u6599\u9801\u9762\u9010\u51fa\uff0c\u4ee5\u4fbf\u70ba\u6b63\u5728\u5099\u4efd\u7684\u51b7\u8cc7\u6599\u9a30\u51fa\u7a7a\u9593\u3002\u9019\u6703\u5c0e\u81f4\u78c1\u789f I\/O \u7a81\u7136\u5287\u589e\uff0c\u56e0\u70ba\u751f\u7522\u67e5\u8a62\u88ab\u8feb\u5f9e\u78c1\u789f\u8b80\u53d6\uff0c\u9032\u800c\u5c0e\u81f4\u56b4\u91cd\u7684\u61c9\u7528\u7a0b\u5f0f\u5ef6\u9072\u3002<\/p>\n<h3>3. \u4e2d\u7e7c\u8cc7\u6599\u9396\u5b9a\u8207 DDL \u885d\u7a81<\/h3>\n<p>\u70ba\u4e86\u4fdd\u6301\u4e00\u81f4\u6027\uff0cDBA \u4f9d\u8cf4 <code>--single-transaction<\/code> \u65d7\u6a19\uff0c\u8a72\u65d7\u6a19\u6703\u5c07\u4ea4\u6613\u9694\u96e2\u5c64\u7d1a\u8a2d\u70ba <code>REPEATABLE READ<\/code>\uff0c\u4e26\u5728\u50be\u5370\u8cc7\u6599\u524d\u555f\u52d5\u4e00\u500b\u4ea4\u6613\u3002<\/p>\n<p>\u96d6\u7136\u9019\u907f\u514d\u4e86\u8cc7\u6599\u8868\u5c64\u7d1a\u7684\u8b80\u53d6\u9396\u5b9a (<code>FLUSH TABLES WITH READ LOCK<\/code>)\uff0c\u4f46\u5b83\u7121\u6cd5\u9632\u6b62\u8cc7\u6599\u5b9a\u7fa9\u8a9e\u8a00 (DDL) \u7684\u8b8a\u66f4\u3002\u5982\u679c\u5728 <code>mysqldump<\/code> \u57f7\u884c\u671f\u9593\u5c0d\u67d0\u500b\u8cc7\u6599\u8868\u57f7\u884c\u4e86 <code>ALTER TABLE<\/code>\u3001<code>DROP TABLE<\/code> \u6216 <code>TRUNCATE TABLE<\/code> \u6307\u4ee4\uff0c\u5099\u4efd\u5c07\u6703\u5d29\u6f70\u4e26\u51fa\u73fe <code>table definition has changed, please retry transaction<\/code> \u932f\u8aa4\u3002\u5728\u983b\u7e41\u9032\u884c\u67b6\u69cb\u9077\u79fb\u7684 CI\/CD \u74b0\u5883\u4e2d\uff0c\u9019\u6703\u5c0e\u81f4\u5099\u4efd\u6301\u7e8c\u5931\u6557\u3002<\/p>\n<h3>4. RTO \u60e1\u5922\uff1a\u5fa9\u539f\u6642\u9593<\/h3>\n<p><code>mysqldump<\/code> \u6700\u707d\u96e3\u6027\u7684\u5931\u6557\u4e26\u975e\u767c\u751f\u5728\u5099\u4efd\u6642\uff0c\u800c\u662f\u5728\u5fa9\u539f\u6642\u3002<\/p>\n<p>\u5fa9\u539f\u908f\u8f2f\u5099\u4efd\u9700\u8981 MySQL \u5f15\u64ce\u89e3\u6790\u4e26\u57f7\u884c\u6578\u767e\u842c\u689d <code>INSERT<\/code> \u9673\u8ff0\u5f0f\u3002\u5c0d\u65bc\u6bcf\u4e00\u5217\u63d2\u5165\uff0cMySQL \u5fc5\u9808\uff1a<br \/>\n* \u6aa2\u67e5\u7d04\u675f\uff08\u5916\u9375\u3001\u552f\u4e00\u9375\uff09\u3002<br \/>\n* \u5373\u6642\u91cd\u5efa\u4e8c\u7d1a\u7d22\u5f15\u3002<br \/>\n* \u5beb\u5165 InnoDB \u91cd\u505a\u65e5\u8a8c (redo log)\u3002<br \/>\n* \u5beb\u5165\u4e8c\u9032\u4f4d\u65e5\u8a8c (binlog\uff0c\u82e5\u5df2\u555f\u7528)\u3002<\/p>\n<p>\u5f9e\u908f\u8f2f\u5099\u4efd\u5fa9\u539f 1TB \u7684\u8cc7\u6599\u5eab\u53ef\u80fd\u9700\u8981\u6578\u5929\u6642\u9593\u3002\u5982\u679c\u60a8\u7684\u696d\u52d9 RTO \u70ba 4 \u5c0f\u6642\uff0c<code>mysqldump<\/code> \u4fdd\u8b49\u6703\u8b93\u60a8\u9055\u53cd\u670d\u52d9\u5c64\u7d1a\u5354\u8b70 (SLA)\u3002<\/p>\n<h2>\u4f01\u696d\u7d1a\u66ff\u4ee3\u65b9\u6848\uff1a\u8f49\u5411\u5be6\u9ad4\u5099\u4efd<\/h2>\n<p>\u70ba\u4e86\u5be6\u73fe\u5927\u898f\u6a21\u8cc7\u6599\u96c6\u7684\u5feb\u901f\u5099\u4efd\u8207\u5fa9\u539f\uff0c\u60a8\u5fc5\u9808\u653e\u68c4\u908f\u8f2f\u5099\u4efd\uff0c\u6539\u7528<strong>\u5be6\u9ad4\u5099\u4efd<\/strong>\u3002<\/p>\n<p>\u5be6\u9ad4\u5099\u4efd\u5b8c\u5168\u7e5e\u904e\u4e86 MySQL SQL \u57f7\u884c\u5f15\u64ce\u3002\u76f8\u53cd\uff0c\u5b83\u5011\u76f4\u63a5\u5f9e\u6a94\u6848\u7cfb\u7d71\u8907\u88fd\u5e95\u5c64\u4e8c\u9032\u4f4d\u8cc7\u6599\u6a94\u6848\uff08<code>.ibd<\/code> \u6a94\u6848\u3001\u91cd\u505a\u65e5\u8a8c\u548c\u5fa9\u539f\u65e5\u8a8c\uff09\u3002\u7531\u65bc\u5b83\u5011\u53ea\u662f\u8907\u88fd\u6a94\u6848\uff0c\u56e0\u6b64\u53ef\u4ee5\u767c\u63ee\u5132\u5b58\u786c\u9ad4\u6700\u5927\u5316\u7684\u9806\u5e8f\u8b80\u5beb\u901f\u5ea6\uff0c\u4e26\u4e14\u53ef\u4ee5\u9032\u884c\u9ad8\u5ea6\u5e73\u884c\u5316\u8655\u7406\u3002<\/p>\n<h3>Percona XtraBackup\uff1a\u696d\u754c\u6a19\u6e96<\/h3>\n<p>\u5c0d\u65bc InnoDB \u548c XtraDB \u5f15\u64ce\uff0c<strong>Percona XtraBackup<\/strong> \u662f\u9996\u5c48\u4e00\u6307\u7684\u958b\u6e90\u5be6\u9ad4\u5099\u4efd\u5de5\u5177\u3002\u5b83\u80fd\u5c0d MySQL \u8cc7\u6599\u5eab\u57f7\u884c\u71b1\u5099\u4efd\u4e14\u4e0d\u6703\u9020\u6210\u963b\u585e\u3002<\/p>\n<h4>XtraBackup \u7684\u904b\u4f5c\u65b9\u5f0f<\/h4>\n<ol>\n<li><strong>\u8907\u88fd\u8cc7\u6599\uff1a<\/strong> XtraBackup \u958b\u59cb\u8907\u88fd InnoDB \u8cc7\u6599\u6a94\u6848 (<code>.ibd<\/code>)\u3002<\/li>\n<li><strong>\u65e5\u8a8c\u8ffd\u8e64\uff1a<\/strong> \u7531\u65bc\u8cc7\u6599\u5eab\u8655\u65bc\u904b\u4f5c\u72c0\u614b\uff0c\u6a94\u6848\u8907\u88fd\u671f\u9593\u8cc7\u6599\u6703\u767c\u751f\u8b8a\u66f4\u3002XtraBackup \u6703\u7522\u751f\u4e00\u500b\u80cc\u666f\u57f7\u884c\u7dd2\uff0c\u76e3\u63a7\u4e26\u8907\u88fd\u5099\u4efd\u671f\u9593\u767c\u751f\u7684\u4efb\u4f55\u4ea4\u6613\u7684 InnoDB \u91cd\u505a\u65e5\u8a8c (<code>ib_logfile0<\/code> \u7b49)\u3002<\/li>\n<li><strong>\u6e96\u5099\uff08\u5d29\u6f70\u5fa9\u539f\uff09\uff1a<\/strong> \u5099\u4efd\u5b8c\u6210\u5f8c\uff0c\u8907\u88fd\u7684\u8cc7\u6599\u6a94\u6848\u8655\u65bc\u4e0d\u4e00\u81f4\u72c0\u614b\u3002XtraBackup \u6703\u5c07\u8907\u88fd\u7684\u91cd\u505a\u65e5\u8a8c\u61c9\u7528\u65bc\u8cc7\u6599\u6a94\u6848\uff08\u985e\u4f3c\u65bc MySQL \u5728\u555f\u52d5\u6642\u57f7\u884c\u5d29\u6f70\u5fa9\u539f\u7684\u65b9\u5f0f\uff09\uff0c\u5f9e\u800c\u7522\u751f\u5099\u4efd\u5b8c\u6210\u90a3\u4e00\u523b\u8cc7\u6599\u5eab\u7684\u5b8c\u7f8e\u4e00\u81f4\u6027\u5feb\u7167\u3002<\/li>\n<\/ol>\n<h2>\u5be6\u65bd\u5be6\u9ad4\u5099\u4efd\u7b56\u7565<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 Percona XtraBackup \u5be6\u65bd\u5be6\u9ad4\u5099\u4efd\u7b56\u7565\u7684\u6280\u8853\u6307\u5357\u3002<\/p>\n<h3>\u6b65\u9a5f 1\uff1a\u4e32\u6d41\u5099\u4efd<\/h3>\n<p>\u5c07\u5927\u578b\u5099\u4efd\u5beb\u5165\u672c\u6a5f\u78c1\u789f\u901a\u5e38\u6703\u5c0e\u81f4\u5bb9\u91cf\u554f\u984c\u3002\u6700\u4f73\u5be6\u8e10\u662f\u5c07\u5099\u4efd\u76f4\u63a5\u4e32\u6d41\u50b3\u8f38\u81f3\u5c01\u5b58\u683c\u5f0f\u3001\u9032\u884c\u58d3\u7e2e\uff0c\u4e26\u767c\u9001\u81f3\u66ab\u5b58\u5340\u6216\u76f4\u63a5\u50b3\u9001\u81f3\u5099\u4efd\u5e73\u53f0\u3002<\/p>\n<p>\u4f7f\u7528 <code>xbstream<\/code>\uff0c\u6211\u5011\u53ef\u4ee5\u5e73\u884c\u8655\u7406\u5099\u4efd\u4e26\u5373\u6642\u58d3\u7e2e\uff1a<\/p>\n<pre><code class=\"language-bash\">xtrabackup --backup \n  --user=backup_user \n  --password=SecurePassword! \n  --parallel=4 \n  --stream=xbstream | lz4 &gt; \/mnt\/backups\/mysql_prod_backup.xbstream.lz4\n<\/code><\/pre>\n<ul>\n<li><code>--parallel=4<\/code>\uff1a\u5229\u7528 4 \u500b\u57f7\u884c\u7dd2\u540c\u6642\u8b80\u53d6\u8cc7\u6599\u6a94\u6848\u3002<\/li>\n<li><code>--stream=xbstream<\/code>\uff1a\u4ee5 Percona \u7684\u81ea\u8a02\u4e32\u6d41\u683c\u5f0f\u8f38\u51fa\u5099\u4efd\u3002<\/li>\n<li><code>lz4<\/code>\uff1a\u63d0\u4f9b\u6975\u5feb\u3001\u4f4e CPU \u4f54\u7528\u7684\u58d3\u7e2e\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9a5f 2\uff1a\u6e96\u5099\u5fa9\u539f\u7528\u7684\u5099\u4efd<\/h3>\n<p>\u5728\u5fa9\u539f\u5be6\u9ad4\u5099\u4efd\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u9032\u884c\u300c\u6e96\u5099\u300d\uff08\u61c9\u7528\u91cd\u505a\u65e5\u8a8c\uff09\u3002\u9996\u5148\uff0c\u89e3\u58d3\u7e2e\u4e32\u6d41\uff1a<\/p>\n<pre><code class=\"language-bash\">mkdir -p \/data\/restore\nlz4 -d \/mnt\/backups\/mysql_prod_backup.xbstream.lz4 | xbstream -x -C \/data\/restore\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u4f86\uff0c\u57f7\u884c\u6e96\u5099\u968e\u6bb5\u3002\u6b64\u6b65\u9a5f\u9700\u8981\u8a18\u61b6\u9ad4\uff0c\u56e0\u6b64\u8acb\u78ba\u4fdd\u4f3a\u670d\u5668\u5206\u914d\u4e86\u8db3\u5920\u7684 RAM\uff1a<\/p>\n<pre><code class=\"language-bash\">xtrabackup --prepare --use-memory=4G --target-dir=\/data\/restore\n<\/code><\/pre>\n<h3>\u6b65\u9a5f 3\uff1a\u5fa9\u539f\u8cc7\u6599\u5eab<\/h3>\n<p>\u82e5\u8981\u9032\u884c\u5fa9\u539f\uff0c\u76ee\u6a19 MySQL \u8cc7\u6599\u76ee\u9304\u5fc5\u9808\u5b8c\u5168\u6e05\u7a7a\u3002\u505c\u6b62 MySQL \u670d\u52d9\uff0c\u6e05\u9664\u76ee\u9304\uff0c\u7136\u5f8c\u5c07\u6a94\u6848\u8907\u88fd\u56de\u53bb\uff1a<\/p>\n<pre><code class=\"language-bash\">systemctl stop mysql\nrm -rf \/var\/lib\/mysql\/*\n\nxtrabackup --copy-back --target-dir=\/data\/restore\n<\/code><\/pre>\n<p>\u6700\u5f8c\uff0c\u5728\u555f\u52d5\u670d\u52d9\u524d\u4fee\u5fa9\u6a94\u6848\u7cfb\u7d71\u6b0a\u9650\uff1a<\/p>\n<pre><code class=\"language-bash\">chown -R mysql:mysql \/var\/lib\/mysql\nsystemctl start mysql\n<\/code><\/pre>\n<p>\u7531\u65bc\u8cc7\u6599\u6a94\u6848\u5df2\u7d93\u5efa\u7acb\u4e14\u7d22\u5f15\u5df2\u7d93\u7de8\u8b6f\u5b8c\u6210\uff0c\u8cc7\u6599\u5eab\u6703\u7acb\u5373\u555f\u52d5\u3002\u4f7f\u7528 <code>mysqldump<\/code> \u9700\u8981 48 \u5c0f\u6642\u7684\u5fa9\u539f\uff0c\u73fe\u5728\u53ea\u9700\u82b1\u8cbb\u6a94\u6848\u5728\u7db2\u8def\u6216\u78c1\u789f\u9593\u50b3\u8f38\u7684\u6642\u9593\u2014\u2014\u901a\u5e38\u80fd\u5c07 RTO \u7e2e\u77ed\u81f3\u5e7e\u5206\u9418\u3002<\/p>\n<h2>\u512a\u5316\u908f\u8f2f\u5fa9\u539f\uff08\u7576\u60a8\u5fc5\u9808\u4f7f\u7528\u6642\uff09<\/h2>\n<p>\u5982\u679c\u60a8\u88ab\u8feb\u5fa9\u539f\u5927\u578b\u908f\u8f2f\u5099\u4efd\uff08\u4f8b\u5982\u5728\u4e0d\u540c MySQL \u4e3b\u8981\u7248\u672c\u4e4b\u9593\u9077\u79fb\uff0c\u6216\u5728\u5be6\u9ad4\u6a94\u6848\u4e0d\u76f8\u5bb9\u7684\u4e0d\u540c CPU \u67b6\u69cb\u4e4b\u9593\u9077\u79fb\uff09\uff0c\u60a8\u5fc5\u9808\u66ab\u6642\u8abf\u6574 MySQL \u8a2d\u5b9a\u4ee5\u512a\u5316\u5927\u898f\u6a21\u5beb\u5165\u541e\u5410\u91cf\u3002<\/p>\n<p>\u5728\u958b\u59cb\u908f\u8f2f\u5fa9\u539f\u524d\uff0c\u5c07\u9019\u4e9b\u8a2d\u5b9a\u5957\u7528\u5230\u60a8\u7684 <code>my.cnf<\/code>\uff1a<\/p>\n<pre><code class=\"language-ini\">[mysqld]\n# \u5982\u679c\u9019\u662f\u7368\u7acb\u5fa9\u539f\uff0c\u8acb\u66ab\u6642\u505c\u7528 binlog\ndisable_log_bin\n\n# \u5ef6\u9072\u5beb\u5165\u78c1\u789f\u4ee5\u6700\u5927\u5316\u5beb\u5165\u901f\u5ea6\ninnodb_flush_log_at_trx_commit = 2\n\n# \u589e\u52a0\u7de9\u885d\u6c60\u4ee5\u5bb9\u7d0d\u76e1\u53ef\u80fd\u591a\u7684\u5de5\u4f5c\u96c6\ninnodb_buffer_pool_size = &lt;\u8a2d\u5b9a\u70ba\u7e3d RAM \u7684 70%&gt;\n\n# \u589e\u52a0\u65e5\u8a8c\u6a94\u6848\u5927\u5c0f\u4ee5\u9632\u6b62\u983b\u7e41\u7684\u6aa2\u67e5\u9ede\ninnodb_log_file_size = 2G\n\n# \u505c\u7528\u96d9\u5beb\u7de9\u885d\uff08\u5c0d\u751f\u7522\u74b0\u5883\u6709\u98a8\u96aa\uff0c\u5c0d\u521d\u59cb\u8f09\u5165\u662f\u5b89\u5168\u7684\uff09\ninnodb_doublewrite = 0\n<\/code><\/pre>\n<p><em>\u6ce8\u610f\uff1a\u5728\u5141\u8a31\u751f\u7522\u6d41\u91cf\u4e4b\u524d\uff0c\u8acb\u52d9\u5fc5\u5c07\u9019\u4e9b\u8a2d\u5b9a\u9084\u539f\u70ba\u7b26\u5408 ACID \u7684\u9810\u8a2d\u503c\uff08<code>innodb_flush_log_at_trx_commit = 1<\/code>, <code>innodb_doublewrite = 1<\/code>\uff09\u4e26\u91cd\u65b0\u555f\u52d5 MySQL \u670d\u52d9\u3002<\/em><\/p>\n<h2>\u4f7f\u7528 CloudSave \u81ea\u52d5\u5316\u8207\u4fdd\u8b77\u5099\u4efd<\/h2>\n<p>\u96d6\u7136 Percona XtraBackup \u7b49\u5de5\u5177\u89e3\u6c7a\u4e86\u9ad8\u6548\u64f7\u53d6\u8cc7\u6599\u7684\u6a5f\u5236\uff0c\u4f46\u771f\u6b63\u7684\u4f01\u696d\u7d1a\u707d\u96e3\u5fa9\u539f\u7b56\u7565\u9700\u8981\u7de8\u6392\u3001\u5b89\u5168\u7684\u7570\u5730\u5132\u5b58\u4ee5\u53ca\u751f\u547d\u9031\u671f\u7ba1\u7406\u3002\u4f9d\u8cf4\u81ea\u8a02 bash \u6307\u4ee4\u78bc\u548c cron \u5de5\u4f5c\u4f86\u7ba1\u7406\u5be6\u9ad4\u5099\u4efd\uff0c\u6703\u5e36\u4f86\u6975\u9ad8\u7684\u975c\u9ed8\u5931\u6557\u548c\u5408\u898f\u6027\u9055\u898f\u98a8\u96aa\u3002<\/p>\n<p>\u9019\u5c31\u662f\u5c07\u60a8\u7684\u8cc7\u6599\u5eab\u5c64\u8207 <strong>CloudSave<\/strong> \u7b49\u4f01\u696d\u5e73\u53f0\u6574\u5408\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u7684\u539f\u56e0\u3002<\/p>\n<p>CloudSave \u5f4c\u88dc\u4e86\u539f\u59cb\u8cc7\u6599\u5eab\u5de5\u5177\u8207\u4f01\u696d\u5408\u898f\u6027\u4e4b\u9593\u7684\u5dee\u8ddd\u3002\u900f\u904e\u5229\u7528 CloudSave \u7684\u524d\u7f6e\u8207\u5f8c\u7f6e\u6307\u4ee4\u78bc\u529f\u80fd\uff0cDevOps \u5718\u968a\u53ef\u4ee5\u89f8\u767c XtraBackup \u4f86\u7522\u751f\u4e00\u81f4\u7684\u5be6\u9ad4\u5feb\u7167\u3002CloudSave \u96a8\u5f8c\u6703\u7121\u7e2b\u64f7\u53d6\u5099\u4efd\u4e32\u6d41\uff0c\u61c9\u7528 AES-256 \u52a0\u5bc6\uff0c\u4e26\u5728\u5c07\u8cc7\u6599\u8907\u88fd\u5230\u4e0d\u53ef\u8b8a\u7684\u96f2\u7aef\u5132\u5b58\u4e4b\u524d\u9032\u884c\u53bb\u91cd\u8907\u8655\u7406\u3002<\/p>\n<p>\u6b64\u67b6\u69cb\u78ba\u4fdd\uff1a<br \/>\n1. <strong>\u7dad\u6301\u751f\u7522\u6548\u80fd\uff1a<\/strong> \u5099\u4efd\u4ee5\u5132\u5b58\u901f\u5ea6\u57f7\u884c\uff0c\u4e0d\u6703\u6c61\u67d3 InnoDB \u7de9\u885d\u6c60\u3002<br \/>\n2. <strong>\u52d2\u7d22\u8edf\u9ad4\u9632\u8b77\uff1a<\/strong> CloudSave \u5167\u7684\u4e0d\u53ef\u8b8a\u5132\u5b58\u539f\u5247\u53ef\u9632\u6b62\u60e1\u610f\u884c\u70ba\u8005\u522a\u9664\u6216\u52a0\u5bc6\u60a8\u7684\u8cc7\u6599\u5eab\u5c01\u5b58\u6a94\u3002<br \/>\n3. <strong>\u81ea\u52d5\u5316\u4fdd\u7559\uff1a<\/strong> \u81ea\u52d5\u8655\u7406\u7956\u7236-\u7236-\u5b50 (GFS) \u4fdd\u7559\u539f\u5247\uff0c\u78ba\u4fdd\u7b26\u5408\u8cc7\u6599\u4e3b\u6b0a\u8207\u7a3d\u6838\u8981\u6c42\u3002<br \/>\n4. <strong>\u53ef\u9810\u6e2c\u7684 RTO\uff1a<\/strong> \u7531\u65bc CloudSave \u7ba1\u7406\u5be6\u9ad4\u6a94\u6848\u5c01\u5b58\uff0c\u5c07\u6578 TB \u7684\u8cc7\u6599\u5eab\u5fa9\u539f\u5230\u65b0\u57f7\u884c\u500b\u9ad4\u53ef\u4ee5\u5feb\u901f\u7de8\u6392\uff0c\u9054\u6210\u56b4\u683c\u7684 RTO \u76ee\u6a19\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u7e7c\u7e8c\u5728\u5927\u898f\u6a21\u8cc7\u6599\u5eab\u4e0a\u4f7f\u7528 <code>mysqldump<\/code>\uff0c\u662f\u5728\u62ff\u7d44\u7e54\u7684\u6b63\u5e38\u904b\u4f5c\u6642\u9593\u8207\u8cc7\u6599\u5b8c\u6574\u6027\u9032\u884c\u8ced\u535a\u3002\u5176\u55ae\u57f7\u884c\u7dd2\u7279\u6027\u3001\u7de9\u885d\u6c60\u6c61\u67d3\u4ee5\u53ca\u707d\u96e3\u6027\u7684\u5fa9\u539f\u6642\u9593\uff0c\u4f7f\u5176\u5f9e\u6839\u672c\u4e0a\u4e0d\u9069\u5408\u73fe\u4ee3\u7684\u9ad8\u541e\u5410\u91cf\u74b0\u5883\u3002<\/p>\n<p>\u900f\u904e\u4f7f\u7528 Percona XtraBackup \u7b49\u5de5\u5177\u8f49\u5411\u5be6\u9ad4\u5099\u4efd\uff0c\u4e26\u900f\u904e CloudSave \u7b49\u5f37\u5927\u5e73\u53f0\u7de8\u6392\u751f\u547d\u9031\u671f\u3001\u52a0\u5bc6\u8207\u7570\u5730\u8907\u88fd\uff0c\u60a8\u53ef\u4ee5\u5c07\u8cc7\u6599\u5eab\u5099\u4efd\u7b56\u7565\u5f9e\u8106\u5f31\u7684\u8ca0\u50b5\u8f49\u8b8a\u70ba\u5177\u5099\u97cc\u6027\u7684\u4f01\u696d\u7d1a\u8cc7\u7522\u3002\u7acb\u5373\u8a55\u4f30\u60a8\u76ee\u524d\u7684 RTO \u8207 RPO \u6307\u6a19\u2014\u2014\u5982\u679c\u5fa9\u539f\u6642\u9593\u8d85\u904e\u4e86\u60a8\u7684\u696d\u52d9\u6240\u80fd\u627f\u53d7\u7684\u96e2\u7dda\u6642\u9593\uff0c\u90a3\u9ebc\u73fe\u5728\u5c31\u662f\u62cb\u68c4 <code>mysqldump<\/code> \u7684\u6642\u5019\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>** Discover why mysqldump fails large MySQL databases and learn how to implement enterprise-grade physical backups using Percona XtraBackup and CloudSave to drastically reduce your RTO.<\/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 mysqldump Fails Large MySQL Databases & How to Fix It","rank_math_description":"** Discover why mysqldump fails large MySQL databases and learn how to implement enterprise-grade physical backups using Percona XtraBackup and CloudSave to drastically reduce your RTO.","rank_math_focus_keyword":"mysqldump large 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