{"id":4443,"date":"2026-06-14T19:31:12","date_gmt":"2026-06-14T19:31:12","guid":{"rendered":"https:\/\/cloudsave.app\/?p=4443"},"modified":"2026-06-15T14:03:16","modified_gmt":"2026-06-15T14:03:16","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88-mysqldump-%e5%9c%a8%e5%a4%84%e7%90%86%e5%a4%a7%e5%9e%8b-mysql-%e6%95%b0%e6%8d%ae%e5%ba%93%e6%97%b6%e4%bc%9a%e5%a4%b1%e8%b4%a5-%e4%bb%a5%e5%8f%8a%e5%a6%82%e4%bd%95%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/cloudsave.app\/zh-hans\/knowledge-base\/%e4%b8%ba%e4%bb%80%e4%b9%88-mysqldump-%e5%9c%a8%e5%a4%84%e7%90%86%e5%a4%a7%e5%9e%8b-mysql-%e6%95%b0%e6%8d%ae%e5%ba%93%e6%97%b6%e4%bc%9a%e5%a4%b1%e8%b4%a5-%e4%bb%a5%e5%8f%8a%e5%a6%82%e4%bd%95%e8%a7%a3\/","title":{"rendered":"\u4e3a\u4ec0\u4e48 mysqldump \u5728\u5904\u7406\u5927\u578b MySQL \u6570\u636e\u5e93\u65f6\u4f1a\u5931\u8d25\uff08\u4ee5\u53ca\u5982\u4f55\u89e3\u51b3\uff09"},"content":{"rendered":"<p>\u51e0\u5341\u5e74\u6765\uff0c<code>mysqldump<\/code> \u4e00\u76f4\u662f MySQL \u6570\u636e\u5e93\u5907\u4efd\u9886\u57df\u65e0\u53ef\u4e89\u8bae\u7684\u201c\u745e\u58eb\u519b\u5200\u201d\u3002\u5b83\u65e0\u5904\u4e0d\u5728\u3001\u7b80\u5355\u76f4\u63a5\uff0c\u5e76\u4e14\u9884\u88c5\u5728\u6bcf\u4e00\u4e2a MySQL \u548c MariaDB \u53d1\u884c\u7248\u4e2d\u3002\u5bf9\u4e8e\u4e2d\u5c0f\u578b\u6570\u636e\u5e93\uff0c\u5b83\u7684\u8868\u73b0\u975e\u5e38\u51fa\u8272\u3002<\/p>\n<p>\u7136\u800c\uff0c\u968f\u7740\u4f01\u4e1a\u89c4\u6a21\u7684\u6269\u5927\uff0c\u6570\u636e\u96c6\u7a81\u7834 100GB\u3001500GB \u751a\u81f3\u6570 TB \u7684\u9608\u503c\uff0c\u7ee7\u7eed\u4f9d\u8d56 <code>mysqldump<\/code> \u5c31\u4ece\u4e00\u79cd\u6700\u4f73\u5b9e\u8df5\u8f6c\u53d8\u4e3a\u4e00\u4e2a\u4e25\u91cd\u7684\u67b6\u6784\u6f0f\u6d1e\u3002\u5982\u679c\u60a8\u662f\u4e00\u4f4d\u7ba1\u7406\u5927\u89c4\u6a21\u751f\u4ea7\u6570\u636e\u5e93\u7684 DBA \u6216 DevOps \u5de5\u7a0b\u5e08\uff0c\u60a8\u53ef\u80fd\u5df2\u7ecf\u7ecf\u5386\u8fc7\u903b\u8f91\u5907\u4efd\u6240\u5e26\u6765\u7684\u9759\u9ed8\u5931\u8d25\u3001\u751f\u4ea7\u73af\u5883\u6027\u80fd\u4e0b\u964d\u4ee5\u53ca\u65e0\u6cd5\u63a5\u53d7\u7684\u6062\u590d\u65f6\u95f4\u76ee\u6807 (RTO)\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u5256\u6790 <code>mysqldump<\/code> \u7684\u67b6\u6784\u5c40\u9650\u6027\uff0c\u63a2\u8ba8\u5b83\u4e3a\u4f55\u65e0\u6cd5\u5e94\u5bf9\u5927\u89c4\u6a21\u573a\u666f\uff0c\u5e76\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5b9e\u65bd\u4f01\u4e1a\u7ea7\u7269\u7406\u5907\u4efd\u7b56\u7565\uff0c\u4ee5\u4fdd\u62a4\u60a8\u7684\u5173\u952e\u4efb\u52a1\u6570\u636e\u3002<\/p>\n<h2>mysqldump \u7684\u67b6\u6784\u5c40\u9650\u6027<\/h2>\n<p>\u8981\u7406\u89e3\u4e3a\u4ec0\u4e48 <code>mysqldump<\/code> \u5728\u5927\u89c4\u6a21\u573a\u666f\u4e0b\u4f1a\u5931\u8d25\uff0c\u6211\u4eec\u5fc5\u987b\u68c0\u67e5\u5176\u5e95\u5c42\u8fd0\u884c\u673a\u5236\u3002<code>mysqldump<\/code> \u6267\u884c\u7684\u662f<strong>\u903b\u8f91\u5907\u4efd<\/strong>\u3002\u5b83\u67e5\u8be2\u6570\u636e\u5e93\u5f15\u64ce\uff0c\u8bfb\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u4e00\u7cfb\u5217 SQL \u8bed\u53e5\uff08\u4e3b\u8981\u662f <code>CREATE TABLE<\/code> \u548c <code>INSERT INTO<\/code>\uff09\u3002<\/p>\n<p>\u867d\u7136\u8fd9\u521b\u5efa\u4e86\u4e00\u4e2a\u9ad8\u5ea6\u53ef\u79fb\u690d\u3001\u4eba\u7c7b\u53ef\u8bfb\u7684\u6587\u4ef6\uff0c\u4f46\u5728\u9ad8\u541e\u5410\u91cf\u73af\u5883\u4e2d\uff0c\u5b83\u5f15\u5165\u4e86\u4e25\u91cd\u7684\u74f6\u9888\u3002<\/p>\n<h3>1. \u5355\u7ebf\u7a0b\u74f6\u9888<\/h3>\n<p>\u4ece\u8bbe\u8ba1\u4e0a\u8bb2\uff0c<code>mysqldump<\/code> \u662f\u4e00\u4e2a\u5355\u7ebf\u7a0b\u64cd\u4f5c\u3002\u5b83\u4e00\u6b21\u5904\u7406\u4e00\u4e2a\u8868\uff0c\u9010\u884c\u8fdb\u884c\u3002\u867d\u7136\u73b0\u4ee3\u786c\u4ef6\u62e5\u6709\u6570\u5341\u4e2a CPU \u6838\u5fc3\u548c\u6bcf\u79d2\u541e\u5410\u91cf\u8fbe\u6570 GB \u7684 NVMe \u5b58\u50a8\uff0c\u4f46 <code>mysqldump<\/code> \u4ec5\u5229\u7528\u4e86\u8fd9\u4e9b\u8d44\u6e90\u7684\u4e00\u5c0f\u90e8\u5206\u3002<\/p>\n<p>\u5373\u4f7f\u5728\u4f7f\u7528 InnoDB \u8868\u7684\u6807\u51c6\u6807\u5fd7\u65f6\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> \u6807\u5fd7\u5f3a\u5236 <code>mysqldump<\/code> \u9010\u884c\u68c0\u7d22\u6570\u636e\uff0c\u800c\u4e0d\u662f\u5c06\u6574\u4e2a\u8868\u7f13\u51b2\u5230\u5185\u5b58\u4e2d\uff0c\u8fd9\u53ef\u4ee5\u9632\u6b62\u5ba2\u6237\u7aef\u51fa\u73b0\u5185\u5b58\u6ea2\u51fa (OOM) \u9519\u8bef\u3002\u7136\u800c\uff0c\u5176\u5355\u7ebf\u7a0b\u7279\u6027\u610f\u5473\u7740\u4e00\u4e2a 500GB \u7684\u6570\u636e\u5e93\u53ef\u80fd\u9700\u8981 10 \u5230 15 \u4e2a\u5c0f\u65f6\u624d\u80fd\u5b8c\u6210\u8f6c\u50a8\uff0c\u8fd9\u4e25\u91cd\u5f71\u54cd\u4e86\u60a8\u7684\u6062\u590d\u70b9\u76ee\u6807 (RPO)\u3002<\/p>\n<h3>2. InnoDB \u7f13\u51b2\u6c60\u6c61\u67d3<\/h3>\n<p>\u5f53 <code>mysqldump<\/code> \u8bfb\u53d6\u6bcf\u4e2a\u8868\u7684\u6bcf\u4e00\u884c\u65f6\uff0c\u5b83\u4f1a\u5f3a\u5236 MySQL \u5f15\u64ce\u5c06\u8fd9\u4e9b\u6570\u636e\u4ece\u78c1\u76d8\u52a0\u8f7d\u5230 InnoDB \u7f13\u51b2\u6c60\u4e2d\u3002\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u60a8\u7684\u7f13\u51b2\u6c60\u4e2d\u7cbe\u5fc3\u586b\u5145\u7684\u662f\u201c\u70ed\u201d\u5de5\u4f5c\u6570\u636e\u96c6\u3002<\/p>\n<p>\u5927\u89c4\u6a21\u7684\u903b\u8f91\u8f6c\u50a8\u4f1a\u201c\u626b\u8361\u201d\u7f13\u51b2\u6c60\uff0c\u9a71\u9010\u9891\u7e41\u8bbf\u95ee\u7684\u7d22\u5f15\u548c\u6570\u636e\u9875\uff0c\u4e3a\u6b63\u5728\u5907\u4efd\u7684\u51b7\u6570\u636e\u817e\u51fa\u7a7a\u95f4\u3002\u8fd9\u4f1a\u5bfc\u81f4\u78c1\u76d8 I\/O \u7a81\u7136\u6fc0\u589e\uff0c\u56e0\u4e3a\u751f\u4ea7\u67e5\u8be2\u88ab\u8feb\u4ece\u78c1\u76d8\u8bfb\u53d6\u6570\u636e\uff0c\u4ece\u800c\u5bfc\u81f4\u4e25\u91cd\u7684\u5e94\u7528\u7a0b\u5e8f\u5ef6\u8fdf\u3002<\/p>\n<h3>3. \u5143\u6570\u636e\u9501\u4e0e DDL \u51b2\u7a81<\/h3>\n<p>\u4e3a\u4e86\u4fdd\u6301\u4e00\u81f4\u6027\uff0cDBA \u4f9d\u8d56 <code>--single-transaction<\/code> \u6807\u5fd7\uff0c\u8be5\u6807\u5fd7\u5c06\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u8bbe\u7f6e\u4e3a <code>REPEATABLE READ<\/code>\uff0c\u5e76\u5728\u8f6c\u50a8\u6570\u636e\u4e4b\u524d\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1\u3002<\/p>\n<p>\u867d\u7136\u8fd9\u907f\u514d\u4e86\u8868\u7ea7\u8bfb\u9501 (<code>FLUSH TABLES WITH READ LOCK<\/code>)\uff0c\u4f46\u5b83\u65e0\u6cd5\u9632\u6b62\u6570\u636e\u5b9a\u4e49\u8bed\u8a00 (DDL) \u7684\u66f4\u6539\u3002\u5982\u679c\u5728 <code>mysqldump<\/code> \u8fd0\u884c\u65f6\u5bf9\u67d0\u4e2a\u8868\u6267\u884c\u4e86 <code>ALTER TABLE<\/code>\u3001<code>DROP TABLE<\/code> \u6216 <code>TRUNCATE TABLE<\/code> \u547d\u4ee4\uff0c\u5907\u4efd\u5c06\u56e0 <code>table definition has changed, please retry transaction<\/code> \u9519\u8bef\u800c\u5d29\u6e83\u3002\u5728\u9891\u7e41\u8fdb\u884c\u6a21\u5f0f\u8fc1\u79fb\u7684 CI\/CD \u73af\u5883\u4e2d\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u5907\u4efd\u6301\u7eed\u5931\u8d25\u3002<\/p>\n<h3>4. RTO \u7684\u5669\u68a6\uff1a\u6062\u590d\u65f6\u95f4<\/h3>\n<p><code>mysqldump<\/code> \u6700\u707e\u96be\u6027\u7684\u5931\u8d25\u5e76\u975e\u53d1\u751f\u5728\u5907\u4efd\u671f\u95f4\uff0c\u800c\u662f\u53d1\u751f\u5728\u6062\u590d\u671f\u95f4\u3002<\/p>\n<p>\u6062\u590d\u903b\u8f91\u8f6c\u50a8\u9700\u8981 MySQL \u5f15\u64ce\u89e3\u6790\u5e76\u6267\u884c\u6570\u767e\u4e07\u6761 <code>INSERT<\/code> \u8bed\u53e5\u3002\u5bf9\u4e8e\u63d2\u5165\u7684\u6bcf\u4e00\u884c\uff0cMySQL \u5fc5\u987b\uff1a<br \/>\n* \u68c0\u67e5\u7ea6\u675f\uff08\u5916\u952e\u3001\u552f\u4e00\u952e\uff09\u3002<br \/>\n* \u52a8\u6001\u91cd\u5efa\u4e8c\u7ea7\u7d22\u5f15\u3002<br \/>\n* \u5199\u5165 InnoDB \u91cd\u505a\u65e5\u5fd7 (redo log)\u3002<br \/>\n* \u5237\u65b0\u5230\u4e8c\u8fdb\u5236\u65e5\u5fd7 (binlog)\uff08\u5982\u679c\u5df2\u542f\u7528\uff09\u3002<\/p>\n<p>\u4ece\u903b\u8f91\u8f6c\u50a8\u4e2d\u6062\u590d 1TB \u7684\u6570\u636e\u5e93\u53ef\u80fd\u9700\u8981\u51e0\u5929\u65f6\u95f4\u3002\u5982\u679c\u60a8\u7684\u4e1a\u52a1 RTO \u4e3a 4 \u5c0f\u65f6\uff0c\u90a3\u4e48 <code>mysqldump<\/code> \u4fdd\u8bc1\u4f1a\u8ba9\u60a8\u8fdd\u53cd\u670d\u52a1\u7b49\u7ea7\u534f\u8bae (SLA)\u3002<\/p>\n<h2>\u4f01\u4e1a\u7ea7\u66ff\u4ee3\u65b9\u6848\uff1a\u8f6c\u5411\u7269\u7406\u5907\u4efd<\/h2>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u5927\u89c4\u6a21\u6570\u636e\u96c6\u7684\u5feb\u901f\u5907\u4efd\u548c\u6062\u590d\uff0c\u60a8\u5fc5\u987b\u653e\u5f03\u903b\u8f91\u5907\u4efd\uff0c\u8f6c\u800c\u91c7\u7528<strong>\u7269\u7406\u5907\u4efd<\/strong>\u3002<\/p>\n<p>\u7269\u7406\u5907\u4efd\u5b8c\u5168\u7ed5\u8fc7\u4e86 MySQL SQL \u6267\u884c\u5f15\u64ce\u3002\u76f8\u53cd\uff0c\u5b83\u4eec\u76f4\u63a5\u4ece\u6587\u4ef6\u7cfb\u7edf\u590d\u5236\u5e95\u5c42\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u6587\u4ef6\uff08<code>.ibd<\/code> \u6587\u4ef6\u3001\u91cd\u505a\u65e5\u5fd7\u548c\u64a4\u9500\u65e5\u5fd7\uff09\u3002\u7531\u4e8e\u5b83\u4eec\u53ea\u662f\u590d\u5236\u6587\u4ef6\uff0c\u56e0\u6b64\u53ef\u4ee5\u4ee5\u5b58\u50a8\u786c\u4ef6\u7684\u6700\u5927\u987a\u5e8f\u8bfb\u5199\u901f\u5ea6\u8fd0\u884c\uff0c\u5e76\u4e14\u53ef\u4ee5\u8fdb\u884c\u9ad8\u5ea6\u5e76\u884c\u5316\u5904\u7406\u3002<\/p>\n<h3>Percona XtraBackup\uff1a\u884c\u4e1a\u6807\u51c6<\/h3>\n<p>\u5bf9\u4e8e InnoDB \u548c XtraDB \u5f15\u64ce\uff0c<strong>Percona XtraBackup<\/strong> \u662f\u9996\u5c48\u4e00\u6307\u7684\u5f00\u6e90\u7269\u7406\u5907\u4efd\u5de5\u5177\u3002\u5b83\u6267\u884c MySQL \u6570\u636e\u5e93\u7684\u70ed\u5907\u4efd\uff0c\u4e14\u4e0d\u4f1a\u963b\u585e\u64cd\u4f5c\u3002<\/p>\n<h4>XtraBackup \u7684\u5de5\u4f5c\u539f\u7406<\/h4>\n<ol>\n<li><strong>\u590d\u5236\u6570\u636e\uff1a<\/strong> XtraBackup \u5f00\u59cb\u590d\u5236 InnoDB \u6570\u636e\u6587\u4ef6 (<code>.ibd<\/code>)\u3002<\/li>\n<li><strong>\u65e5\u5fd7\u8ddf\u8e2a\uff1a<\/strong> \u7531\u4e8e\u6570\u636e\u5e93\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u5728\u590d\u5236\u6587\u4ef6\u65f6\u6570\u636e\u4f1a\u53d1\u751f\u53d8\u5316\u3002XtraBackup \u4f1a\u751f\u6210\u4e00\u4e2a\u540e\u53f0\u7ebf\u7a0b\uff0c\u76d1\u63a7\u5e76\u590d\u5236\u5907\u4efd\u7a97\u53e3\u671f\u95f4\u53d1\u751f\u7684\u6240\u6709\u4e8b\u52a1\u7684 InnoDB \u91cd\u505a\u65e5\u5fd7 (<code>ib_logfile0<\/code> \u7b49)\u3002<\/li>\n<li><strong>\u51c6\u5907\uff08\u5d29\u6e83\u6062\u590d\uff09\uff1a<\/strong> \u5907\u4efd\u540e\uff0c\u590d\u5236\u7684\u6570\u636e\u6587\u4ef6\u5904\u4e8e\u4e0d\u4e00\u81f4\u72b6\u6001\u3002XtraBackup \u5c06\u590d\u5236\u7684\u91cd\u505a\u65e5\u5fd7\u5e94\u7528\u4e8e\u6570\u636e\u6587\u4ef6\uff08\u7c7b\u4f3c\u4e8e MySQL \u5728\u542f\u52a8\u65f6\u6267\u884c\u5d29\u6e83\u6062\u590d\u7684\u65b9\u5f0f\uff09\uff0c\u4ece\u800c\u5728\u5907\u4efd\u5b8c\u6210\u7684\u77ac\u95f4\u83b7\u5f97\u6570\u636e\u5e93\u7684\u4e00\u81f4\u6027\u5feb\u7167\u3002<\/li>\n<\/ol>\n<h2>\u5b9e\u65bd\u7269\u7406\u5907\u4efd\u7b56\u7565<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 Percona XtraBackup \u5b9e\u65bd\u7269\u7406\u5907\u4efd\u7b56\u7565\u7684\u6280\u672f\u6307\u5357\u3002<\/p>\n<h3>\u7b2c 1 \u6b65\uff1a\u6d41\u5f0f\u4f20\u8f93\u5907\u4efd<\/h3>\n<p>\u5c06\u5927\u89c4\u6a21\u5907\u4efd\u5199\u5165\u672c\u5730\u78c1\u76d8\u901a\u5e38\u4f1a\u5bfc\u81f4\u5bb9\u91cf\u95ee\u9898\u3002\u6700\u4f73\u5b9e\u8df5\u662f\u5c06\u5907\u4efd\u76f4\u63a5\u6d41\u5f0f\u4f20\u8f93\u5230\u5f52\u6863\u683c\u5f0f\uff0c\u8fdb\u884c\u538b\u7f29\uff0c\u5e76\u53d1\u9001\u5230\u6682\u5b58\u533a\u6216\u76f4\u63a5\u53d1\u9001\u5230\u5907\u4efd\u5e73\u53f0\u3002<\/p>\n<p>\u4f7f\u7528 <code>xbstream<\/code>\uff0c\u6211\u4eec\u53ef\u4ee5\u5e76\u884c\u5316\u5907\u4efd\u5e76\u5373\u65f6\u538b\u7f29\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 \u4e2a\u7ebf\u7a0b\u5e76\u53d1\u8bfb\u53d6\u6570\u636e\u6587\u4ef6\u3002<\/li>\n<li><code>--stream=xbstream<\/code>\uff1a\u4ee5 Percona \u7684\u81ea\u5b9a\u4e49\u6d41\u683c\u5f0f\u8f93\u51fa\u5907\u4efd\u3002<\/li>\n<li><code>lz4<\/code>\uff1a\u63d0\u4f9b\u6781\u5feb\u3001\u4f4e CPU \u5360\u7528\u7684\u538b\u7f29\u3002<\/li>\n<\/ul>\n<h3>\u7b2c 2 \u6b65\uff1a\u51c6\u5907\u5907\u4efd\u4ee5\u8fdb\u884c\u6062\u590d<\/h3>\n<p>\u5728\u6062\u590d\u7269\u7406\u5907\u4efd\u4e4b\u524d\uff0c\u5fc5\u987b\u5bf9\u5176\u8fdb\u884c\u201c\u51c6\u5907\u201d\uff08\u5e94\u7528\u91cd\u505a\u65e5\u5fd7\uff09\u3002\u9996\u5148\uff0c\u63d0\u53d6\u5e76\u89e3\u538b\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\u6765\uff0c\u8fd0\u884c\u51c6\u5907\u9636\u6bb5\u3002\u6b64\u6b65\u9aa4\u9700\u8981\u5185\u5b58\uff0c\u56e0\u6b64\u8bf7\u786e\u4fdd\u670d\u52a1\u5668\u5206\u914d\u4e86\u8db3\u591f\u7684 RAM\uff1a<\/p>\n<pre><code class=\"language-bash\">xtrabackup --prepare --use-memory=4G --target-dir=\/data\/restore\n<\/code><\/pre>\n<h3>\u7b2c 3 \u6b65\uff1a\u6062\u590d\u6570\u636e\u5e93<\/h3>\n<p>\u8981\u8fdb\u884c\u6062\u590d\uff0c\u76ee\u6807 MySQL \u6570\u636e\u76ee\u5f55\u5fc5\u987b\u5b8c\u5168\u4e3a\u7a7a\u3002\u505c\u6b62 MySQL \u670d\u52a1\uff0c\u6e05\u7a7a\u76ee\u5f55\uff0c\u7136\u540e\u5c06\u6587\u4ef6\u590d\u5236\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\u540e\uff0c\u5728\u542f\u52a8\u670d\u52a1\u4e4b\u524d\u4fee\u590d\u6587\u4ef6\u7cfb\u7edf\u6743\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\u4e8e\u6570\u636e\u6587\u4ef6\u5df2\u7ecf\u6784\u5efa\u4e14\u7d22\u5f15\u5df2\u7ecf\u7f16\u8bd1\uff0c\u6570\u636e\u5e93\u4f1a\u7acb\u5373\u542f\u52a8\u3002\u4f7f\u7528 <code>mysqldump<\/code> \u9700\u8981 48 \u5c0f\u65f6\u7684\u6062\u590d\u8fc7\u7a0b\uff0c\u73b0\u5728\u53ea\u9700\u8981\u5728\u7f51\u7edc\u6216\u78c1\u76d8\u95f4\u590d\u5236\u6587\u4ef6\u7684\u65f6\u95f4\u2014\u2014\u901a\u5e38\u5c06 RTO \u7f29\u77ed\u81f3\u5206\u949f\u7ea7\u3002<\/p>\n<h2>\u4f18\u5316\u903b\u8f91\u6062\u590d\uff08\u5f53\u5fc5\u987b\u4f7f\u7528\u65f6\uff09<\/h2>\n<p>\u5982\u679c\u60a8\u88ab\u8feb\u6062\u590d\u5927\u578b\u903b\u8f91\u8f6c\u50a8\uff08\u4f8b\u5982\u5728\u4e0d\u540c\u7684\u5927\u7248\u672c MySQL \u4e4b\u95f4\u8fc1\u79fb\uff0c\u6216\u5728\u7269\u7406\u6587\u4ef6\u4e0d\u517c\u5bb9\u7684\u4e0d\u540c CPU \u67b6\u6784\u4e4b\u95f4\u8fc1\u79fb\uff09\uff0c\u60a8\u5fc5\u987b\u6682\u65f6\u8c03\u6574 MySQL \u914d\u7f6e\u4ee5\u4f18\u5316\u5927\u89c4\u6a21\u5199\u5165\u541e\u5410\u91cf\u3002<\/p>\n<p>\u5728\u5f00\u59cb\u903b\u8f91\u6062\u590d\u4e4b\u524d\uff0c\u5c06\u8fd9\u4e9b\u8bbe\u7f6e\u5e94\u7528\u5230\u60a8\u7684 <code>my.cnf<\/code>\uff1a<\/p>\n<pre><code class=\"language-ini\">[mysqld]\n# \u5982\u679c\u8fd9\u662f\u72ec\u7acb\u6062\u590d\uff0c\u6682\u65f6\u7981\u7528\u4e8c\u8fdb\u5236\u65e5\u5fd7\ndisable_log_bin\n\n# \u5ef6\u8fdf\u5237\u65b0\u5230\u78c1\u76d8\u4ee5\u6700\u5927\u5316\u5199\u5165\u901f\u5ea6\ninnodb_flush_log_at_trx_commit = 2\n\n# \u589e\u52a0\u7f13\u51b2\u6c60\u4ee5\u5c3d\u53ef\u80fd\u5bb9\u7eb3\u5de5\u4f5c\u96c6\ninnodb_buffer_pool_size = &lt;\u8bbe\u7f6e\u4e3a\u603b RAM \u7684 70%&gt;\n\n# \u589e\u52a0\u65e5\u5fd7\u6587\u4ef6\u5927\u5c0f\u4ee5\u9632\u6b62\u6fc0\u8fdb\u7684\u68c0\u67e5\u70b9\ninnodb_log_file_size = 2G\n\n# \u7981\u7528\u53cc\u5199\u7f13\u51b2\uff08\u751f\u4ea7\u73af\u5883\u6709\u98ce\u9669\uff0c\u521d\u59cb\u52a0\u8f7d\u65f6\u5b89\u5168\uff09\ninnodb_doublewrite = 0\n<\/code><\/pre>\n<p><em>\u6ce8\u610f\uff1a\u5728\u5141\u8bb8\u751f\u4ea7\u6d41\u91cf\u4e4b\u524d\uff0c\u8bf7\u52a1\u5fc5\u5c06\u8fd9\u4e9b\u8bbe\u7f6e\u6062\u590d\u4e3a\u7b26\u5408 ACID \u7684\u9ed8\u8ba4\u503c\uff08<code>innodb_flush_log_at_trx_commit = 1<\/code>\uff0c<code>innodb_doublewrite = 1<\/code>\uff09\u5e76\u91cd\u542f MySQL \u670d\u52a1\u3002<\/em><\/p>\n<h2>\u4f7f\u7528 CloudSave \u81ea\u52a8\u5316\u548c\u4fdd\u62a4\u5907\u4efd<\/h2>\n<p>\u867d\u7136\u50cf Percona XtraBackup \u8fd9\u6837\u7684\u5de5\u5177\u89e3\u51b3\u4e86\u9ad8\u6548\u63d0\u53d6\u6570\u636e\u7684\u673a\u5236\u95ee\u9898\uff0c\u4f46\u771f\u6b63\u7684\u4f01\u4e1a\u7ea7\u707e\u96be\u6062\u590d\u7b56\u7565\u9700\u8981\u7f16\u6392\u3001\u5b89\u5168\u7684\u5f02\u5730\u5b58\u50a8\u548c\u751f\u547d\u5468\u671f\u7ba1\u7406\u3002\u4f9d\u8d56\u81ea\u5b9a\u4e49 bash \u811a\u672c\u548c cron \u4f5c\u4e1a\u6765\u7ba1\u7406\u7269\u7406\u5907\u4efd\u4f1a\u5e26\u6765\u9759\u9ed8\u5931\u8d25\u548c\u5408\u89c4\u6027\u8fdd\u89c4\u7684\u9ad8\u98ce\u9669\u3002<\/p>\n<p>\u8fd9\u5c31\u662f\u5c06\u60a8\u7684\u6570\u636e\u5e93\u5c42\u4e0e\u50cf <strong>CloudSave<\/strong> \u8fd9\u6837\u7684\u4f01\u4e1a\u5e73\u53f0\u96c6\u6210\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u7684\u5730\u65b9\u3002<\/p>\n<p>CloudSave \u5f25\u5408\u4e86\u539f\u59cb\u6570\u636e\u5e93\u5de5\u5177\u4e0e\u4f01\u4e1a\u5408\u89c4\u6027\u4e4b\u95f4\u7684\u9e3f\u6c9f\u3002\u901a\u8fc7\u5229\u7528 CloudSave \u7684\u524d\u7f6e\u548c\u540e\u7f6e\u811a\u672c\u529f\u80fd\uff0cDevOps \u56e2\u961f\u53ef\u4ee5\u89e6\u53d1 XtraBackup \u751f\u6210\u4e00\u81f4\u7684\u7269\u7406\u5feb\u7167\u3002CloudSave \u968f\u540e\u4f1a\u65e0\u7f1d\u6444\u53d6\u5907\u4efd\u6d41\uff0c\u5e94\u7528 AES-256 \u52a0\u5bc6\uff0c\u5e76\u5728\u5c06\u5176\u590d\u5236\u5230\u4e0d\u53ef\u7be1\u6539\u7684\u4e91\u5b58\u50a8\u4e4b\u524d\u5bf9\u6570\u636e\u8fdb\u884c\u53bb\u91cd\u3002<\/p>\n<p>\u8fd9\u79cd\u67b6\u6784\u786e\u4fdd\u4e86\uff1a<br \/>\n1. <strong>\u7ef4\u6301\u751f\u4ea7\u6027\u80fd\uff1a<\/strong> \u5907\u4efd\u4ee5\u5b58\u50a8\u901f\u5ea6\u8fd0\u884c\uff0c\u4e0d\u4f1a\u6c61\u67d3 InnoDB \u7f13\u51b2\u6c60\u3002<br \/>\n2. <strong>\u52d2\u7d22\u8f6f\u4ef6\u9632\u62a4\uff1a<\/strong> CloudSave \u5185\u7684\u4e0d\u53ef\u7be1\u6539\u5b58\u50a8\u7b56\u7565\u53ef\u9632\u6b62\u6076\u610f\u884c\u4e3a\u8005\u5220\u9664\u6216\u52a0\u5bc6\u60a8\u7684\u6570\u636e\u5e93\u5f52\u6863\u3002<br \/>\n3. <strong>\u81ea\u52a8\u4fdd\u7559\uff1a<\/strong> \u81ea\u52a8\u5904\u7406\u7956\u7236-\u7236\u4eb2-\u513f\u5b50 (GFS) \u4fdd\u7559\u7b56\u7565\uff0c\u786e\u4fdd\u7b26\u5408\u6570\u636e\u4e3b\u6743\u548c\u5ba1\u8ba1\u8981\u6c42\u3002<br \/>\n4. <strong>\u53ef\u9884\u6d4b\u7684 RTO\uff1a<\/strong> \u7531\u4e8e CloudSave \u7ba1\u7406\u7269\u7406\u6587\u4ef6\u5f52\u6863\uff0c\u5c06\u6570 TB \u7684\u6570\u636e\u5e93\u6062\u590d\u5230\u65b0\u5b9e\u4f8b\u7684\u8fc7\u7a0b\u53ef\u4ee5\u5feb\u901f\u7f16\u6392\uff0c\u4ece\u800c\u8fbe\u5230\u4e25\u683c\u7684 RTO \u76ee\u6807\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u7ee7\u7eed\u5728\u5927\u89c4\u6a21\u6570\u636e\u5e93\u4e0a\u4f7f\u7528 <code>mysqldump<\/code> \u662f\u5728\u62ff\u7ec4\u7ec7\u7684\u6b63\u5e38\u8fd0\u884c\u65f6\u95f4\u548c\u6570\u636e\u5b8c\u6574\u6027\u8fdb\u884c\u8d4c\u535a\u3002\u5176\u5355\u7ebf\u7a0b\u7279\u6027\u3001\u7f13\u51b2\u6c60\u6c61\u67d3\u548c\u707e\u96be\u6027\u7684\u6062\u590d\u65f6\u95f4\u4f7f\u5176\u4ece\u6839\u672c\u4e0a\u4e0d\u9002\u5408\u73b0\u4ee3\u9ad8\u541e\u5410\u91cf\u73af\u5883\u3002<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528 Percona XtraBackup \u7b49\u5de5\u5177\u8f6c\u5411\u7269\u7406\u5907\u4efd\uff0c\u5e76\u901a\u8fc7 CloudSave \u7b49\u5f3a\u5927\u7684\u5e73\u53f0\u7f16\u6392\u751f\u547d\u5468\u671f\u3001\u52a0\u5bc6\u548c\u5f02\u5730\u590d\u5236\uff0c\u60a8\u53ef\u4ee5\u5c06\u6570\u636e\u5e93\u5907\u4efd\u7b56\u7565\u4ece\u8106\u5f31\u7684\u8d1f\u62c5\u8f6c\u53d8\u4e3a\u5f39\u6027\u7684\u4f01\u4e1a\u7ea7\u8d44\u4ea7\u3002\u7acb\u5373\u8bc4\u4f30\u60a8\u5f53\u524d\u7684 RTO \u548c RPO \u6307\u6807\u2014\u2014\u5982\u679c\u6062\u590d\u65f6\u95f4\u8d85\u8fc7\u4e86\u60a8\u7684\u4e1a\u52a1\u6240\u80fd\u627f\u53d7\u7684\u505c\u673a\u65f6\u95f4\uff0c\u90a3\u4e48\u662f\u65f6\u5019\u544a\u522b <code>mysqldump<\/code> \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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