{"id":1254,"date":"2026-04-07T14:06:04","date_gmt":"2026-04-07T06:06:04","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1254"},"modified":"2026-04-07T14:06:06","modified_gmt":"2026-04-07T06:06:06","slug":"%e3%80%90mysql%e3%80%91percona-toolkit-%e6%a0%b8%e5%bf%83-7-%e5%b7%a5%e5%85%b7%e5%ae%9e%e6%88%98%ef%bc%8c%e9%ab%98%e6%95%88%e6%90%9e%e5%ae%9a%e6%95%b0%e6%8d%ae%e5%ba%93%e8%bf%90%e7%bb%b4","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1254","title":{"rendered":"\u3010MySQL\u3011Percona Toolkit \u6838\u5fc3 7 \u5de5\u5177\u5b9e\u6218\uff0c\u9ad8\u6548\u641e\u5b9a\u6570\u636e\u5e93\u8fd0\u7ef4"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728 MySQL \u6570\u636e\u5e93\u65e5\u5e38\u8fd0\u7ef4\u4e2d\uff0c\u6211\u4eec\u603b\u4f1a\u9047\u5230\u5404\u7c7b\u7e41\u7410\u95ee\u9898\uff1a\u65b0\u63a5\u624b\u5b9e\u4f8b\u4e0d\u77e5\u5982\u4f55\u5feb\u901f\u6478\u5e95\u3001\u53c2\u6570\u914d\u7f6e\u6015\u7559\u5751\u3001\u4e3b\u4ece\u62d3\u6251\u7406\u4e0d\u6e05\u3001\u6743\u9650\u5bfc\u51fa\u4e71\u7cdf\u7cdf\u3001\u91cd\u590d\u7d22\u5f15\u62d6\u6162\u6027\u80fd\u2026\u2026 \u624b\u52a8\u5904\u7406\u8fd9\u4e9b\u5de5\u4f5c\uff0c\u4e0d\u4ec5\u6548\u7387\u4f4e\uff0c\u8fd8\u6781\u6613\u51fa\u73b0\u9057\u6f0f\u548c\u9519\u8bef\uff0c\u7a0d\u4e0d\u6ce8\u610f\u5c31\u53ef\u80fd\u5f15\u53d1\u6027\u80fd\u95ee\u9898\u751a\u81f3\u4e1a\u52a1\u6545\u969c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Percona Toolkit\uff08\u7b80\u79f0 PT \u5de5\u5177\uff09\u4f5c\u4e3a\u5f00\u6e90\u7684 MySQL \u8fd0\u7ef4\u5229\u5668\uff0c\u7531 Percona \u516c\u53f8\u57fa\u4e8e Perl \u8bed\u8a00\u5f00\u53d1\uff0c\u4e13\u95e8\u9002\u914d MySQL\u3001MariaDB\u3001Percona Server \u7b49\u6570\u636e\u5e93\uff0c\u8f7b\u91cf\u5316\u3001\u5b9e\u7528\u6027\u5f3a\u3001\u517c\u5bb9\u6027\u597d\uff0c\u652f\u6301 5.6 + \u81f3 8.0 + \u4e3b\u6d41 MySQL \u7248\u672c\uff0c\u5355\u673a\u3001\u4e3b\u4ece\u3001\u96c6\u7fa4\u67b6\u6784\u90fd\u80fd hold \u4f4f\u3002\u4eca\u5929\u5c31\u548c\u5927\u5bb6\u5206\u4eab PT \u5de5\u5177\u96c6\u4e2d\u6700\u5e38\u7528\u7684 7 \u4e2a\u6838\u5fc3\u5de5\u5177\uff0c\u7ed3\u5408\u5b9e\u9645\u547d\u4ee4\u548c\u8fd0\u7ef4\u573a\u666f\u62c6\u89e3\uff0c\u8ba9\u5927\u5bb6\u80fd\u5feb\u901f\u4e0a\u624b\uff0c\u628a\u8fd9\u4e9b\u5de5\u5177\u7528\u5728\u65e5\u5e38\u8fd0\u7ef4\u7684\u5200\u5203\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u5b9e\u6218\u73af\u5883\uff1aMySQL 8.0.25\u3001Percona Toolkit 3.5.4\uff0c\u4e3b\u5e93\u5730\u5740 192.168.184.151\u3001\u4ece\u5e93 192.168.184.152\uff0c\u8fd0\u7ef4\u7528\u6237 dba\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001pt-mysql-summary\uff1a\u5b9e\u4f8b\u5168\u91cf\u4fe1\u606f\u6c47\u603b\uff0c\u4e00\u952e\u6478\u6e05\u5bb6\u5e95<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e5\u5e38\u8fd0\u7ef4\u4e2d\uff0c\u60f3\u4e86\u89e3\u4e00\u4e2a MySQL \u5b9e\u4f8b\u7684\u6574\u4f53\u72b6\u6001\uff0c\u624b\u52a8\u6572<code>show status<\/code>\u3001<code>show variables<\/code>\u3001<code>df -h<\/code>\u7b49\u547d\u4ee4\u592a\u96f6\u6563\uff0c\u4fe1\u606f\u8fd8\u4e0d\u7cfb\u7edf\u3002pt-mysql-summary \u80fd\u5feb\u901f\u91c7\u96c6\u5b9e\u4f8b\u7684\u7cfb\u7edf\u73af\u5883\u3001\u6570\u636e\u5e93\u914d\u7f6e\u3001\u8fd0\u884c\u72b6\u6001\u3001\u8868\u7a7a\u95f4\u4f7f\u7528\u7b49\u5168\u91cf\u4fe1\u606f\uff0c\u751f\u6210\u7ed3\u6784\u5316\u62a5\u544a\uff0c\u582a\u79f0\u5b9e\u4f8b \u201c\u6478\u5e95\u795e\u5668\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u547d\u4ee4<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u57fa\u7840\u7528\u6cd5\uff1a\u6307\u5b9a\u7528\u6237\u540d\u3001\u5bc6\u7801\u3001\u4e3b\u673a\u5730\u5740\npt-mysql-summary --user=dba --password='Id81Gdac_a' --host=192.168.184.151\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u62a5\u544a\u6838\u5fc3\u5185\u5bb9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u540e\u62a5\u544a\u5206\u6a21\u5757\u8f93\u51fa\uff0c\u5173\u952e\u4fe1\u606f\u4e00\u76ee\u4e86\u7136\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7cfb\u7edf\u5c42\uff1aCPU \u6838\u6570\u3001\u5185\u5b58\u5927\u5c0f\u3001\u78c1\u76d8\u5206\u533a\u4f7f\u7528\u7387\u3001\u64cd\u4f5c\u7cfb\u7edf\u7248\u672c\uff1b<\/li>\n\n\n\n<li>MySQL \u5c42\uff1a\u7248\u672c\u53f7\u3001\u542f\u52a8\u65f6\u95f4\u3001\u8fde\u63a5\u6570\uff08\u5f53\u524d \/ \u6700\u5927\uff09\u3001QPS\/TPS \u7edf\u8ba1\uff1b<\/li>\n\n\n\n<li>\u914d\u7f6e\u5c42\uff1a<code>innodb_buffer_pool_size<\/code>\u3001<code>slow_query_log<\/code>\u3001<code>max_connections<\/code>\u7b49\u5173\u952e\u53c2\u6570\u5f53\u524d\u503c\uff1b<\/li>\n\n\n\n<li>\u5b58\u50a8\u5c42\uff1a\u5404\u6570\u636e\u5e93\u8868\u7a7a\u95f4\u5927\u5c0f\u3001InnoDB \u7f13\u51b2\u6c60\u547d\u4e2d\u7387\u3001\u65e5\u5fd7\u6587\u4ef6\u5927\u5c0f\uff1b<\/li>\n\n\n\n<li>\u5b89\u5168\u5c42\uff1a\u7528\u6237\u6743\u9650\u6982\u89c8\u3001\u5bc6\u7801\u7b56\u7565\u914d\u7f6e\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b0\u63a5\u624b MySQL \u5b9e\u4f8b\uff0c\u5feb\u901f\u5b8c\u6210\u5168\u7ef4\u5ea6\u6478\u5e95\uff1b<\/li>\n\n\n\n<li>\u65e5\u5e38\u5de1\u68c0\uff0c\u6279\u91cf\u91c7\u96c6\u591a\u5b9e\u4f8b\u4fe1\u606f\uff1b<\/li>\n\n\n\n<li>\u6545\u969c\u6392\u67e5\uff0c\u5feb\u901f\u5b9a\u4f4d\u57fa\u7840\u914d\u7f6e\u6216\u8d44\u6e90\u74f6\u9888\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001pt-variable-advisor\uff1a\u53c2\u6570\u914d\u7f6e\u4f53\u68c0\uff0c\u4e0a\u7ebf\u524d\u5fc5\u505a\u7684\u6821\u9a8c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL \u53c2\u6570\u914d\u7f6e\u76f4\u63a5\u5f71\u54cd\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u5f88\u591a\u8fd0\u7ef4\u95ee\u9898\u90fd\u662f\u56e0\u4e3a\u53c2\u6570\u914d\u7f6e\u4e0d\u5408\u7406\u5bfc\u81f4\u7684\u3002pt-variable-advisor \u80fd\u81ea\u52a8\u5206\u6790 MySQL \u8fd0\u884c\u65f6\u53d8\u91cf\u6216 my.cnf \u914d\u7f6e\u6587\u4ef6\uff0c\u8bc6\u522b\u4e0d\u5408\u7406\u914d\u7f6e\u5e76\u7ed9\u51fa\u5206\u7ea7\u4f18\u5316\u5efa\u8bae\uff0c\u662f MySQL \u4e0a\u7ebf\u524d\u5fc5\u7528\u7684 \u201c\u914d\u7f6e\u4f53\u68c0\u5de5\u5177\u201d\uff0c\u4ece\u6e90\u5934\u89c4\u907f\u53c2\u6570\u5751\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u547d\u4ee4<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u7b80\u5199\u53c2\u6570\uff1ah=host, u=user, p=password\uff08\u53c2\u6570\u95f4\u65e0\u7a7a\u683c\uff09\npt-variable-advisor h=192.168.184.151,u=dba,p=Id81Gdac_a\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5efa\u8bae\u7c7b\u578b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5de5\u5177\u4f1a\u4ee5  <strong>\u8b66\u544a<\/strong>\uff08WARNING\uff09\u548c<strong>\u5efa\u8bae<\/strong>\uff08ADVICE\uff09\u4e24\u4e2a\u7ea7\u522b\u8f93\u51fa\u7ed3\u679c\uff0c\u8986\u76d6\u56db\u5927\u7c7b\u95ee\u9898\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6027\u80fd\u7c7b\uff1a\u5982<code>innodb_buffer_pool_size<\/code>\u4ec5\u8bbe 1G\uff0c\u5efa\u8bae\u6309\u7269\u7406\u5185\u5b58 50%-70% \u914d\u7f6e\uff1b<\/li>\n\n\n\n<li>\u7a33\u5b9a\u6027\u7c7b\uff1a\u5982 2G \u5185\u5b58\u670d\u52a1\u5668<code>max_connections<\/code>\u8bbe 1000\uff0c\u5efa\u8bae\u964d\u4f4e\u81f3 500\uff1b<\/li>\n\n\n\n<li>\u76d1\u63a7\u7c7b\uff1a\u5982<code>slow_query_log<\/code>\u672a\u5f00\u542f\uff0c\u5efa\u8bae\u5f00\u542f\u6355\u6349\u6162\u67e5\u8be2\uff1b<\/li>\n\n\n\n<li>\u517c\u5bb9\u6027\u7c7b\uff1a\u5982<code>sql_mode<\/code>\u672a\u5305\u542b<code>STRICT_TRANS_TABLES<\/code>\uff0c\u5efa\u8bae\u5f00\u542f\u907f\u514d\u810f\u6570\u636e\u5199\u5165\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MySQL \u5b9e\u4f8b\u4e0a\u7ebf\u524d\uff0c\u914d\u7f6e\u5408\u89c4\u6027\u5168\u9762\u68c0\u67e5\uff1b<\/li>\n\n\n\n<li>\u6027\u80fd\u4f18\u5316\u524d\uff0c\u5b9a\u4f4d\u53c2\u6570\u5c42\u9762\u7684\u74f6\u9888\u70b9\uff1b<\/li>\n\n\n\n<li>\u4e3b\u4ece\u5b9e\u4f8b\u53c2\u6570\u4e00\u81f4\u6027\u521d\u6b65\u6821\u9a8c\uff08\u53ef\u914d\u5408 pt-config-diff\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001pt-slave-find\uff1a\u590d\u5236\u62d3\u6251\u81ea\u52a8\u53d1\u73b0\uff0c\u7406\u6e05\u4e3b\u4ece\u5c42\u7ea7\u5173\u7cfb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u590d\u6742\u7684 MySQL \u4e3b\u4ece\u96c6\u7fa4\u4e2d\uff0c\u7ea7\u8054\u4ece\u5e93\u591a\u4e86\u4e4b\u540e\uff0c\u62d3\u6251\u5173\u7cfb\u5f88\u5bb9\u6613\u6df7\u4e71\uff0c\u6392\u67e5\u590d\u5236\u6545\u969c\u65f6\u8fde\u8282\u70b9\u5f52\u5c5e\u90fd\u641e\u4e0d\u6e05\u3002pt-slave-find \u80fd\u81ea\u52a8\u904d\u5386\u4e3b\u4ece\u590d\u5236\u67b6\u6784\uff0c\u751f\u6210\u5b8c\u6574\u7684\u62d3\u6251\u7ed3\u6784\uff0c\u6e05\u6670\u5c55\u793a\u6bcf\u4e2a\u8282\u70b9\u7684\u8fde\u63a5\u5173\u7cfb\u3001\u590d\u5236\u8fd0\u884c\u72b6\u6001\uff0c\u8ba9\u4e3b\u4ece\u5c42\u7ea7\u4e00\u76ee\u4e86\u7136\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u547d\u4ee4<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u57fa\u7840\u7528\u6cd5\uff1a\u8f93\u51fa\u5b8c\u6574\u62d3\u6251\uff08\u542b\u8282\u70b9\u590d\u5236\u8be6\u60c5\uff09\npt-slave-find h=192.168.184.151,u=dba,p=Id81Gdac_a\n# \u7b80\u5316\u8f93\u51fa\uff1a\u4ec5\u663e\u793a\u5404\u8282\u70b9\u4e3b\u673a\u540d\uff08\u5feb\u901f\u68b3\u7406\u62d3\u6251\uff09\npt-slave-find h=192.168.184.151,u=dba,p=Id81Gdac_a --report-format=hostname\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u62d3\u6251\u7ed3\u679c\u793a\u4f8b\uff08\u7b80\u5316\u7248\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>192.168.184.151 (master)\n\u251c\u2500 192.168.184.152 (slave, IO_Running: Yes, SQL_Running: Yes)\n\u2502  \u2514\u2500 192.168.184.153 (slave of 192.168.184.152, IO_Running: Yes, SQL_Running: Yes)\n\u2514\u2500 192.168.184.154 (slave, IO_Running: Yes, SQL_Running: Yes)\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a5\u624b\u73b0\u6709 MySQL \u96c6\u7fa4\uff0c\u5feb\u901f\u7406\u6e05\u6240\u6709\u4e3b\u4ece\u590d\u5236\u5173\u7cfb\uff1b<\/li>\n\n\n\n<li>\u590d\u5236\u6545\u969c\u6392\u67e5\uff0c\u7cbe\u51c6\u5b9a\u4f4d\u5f02\u5e38\u8282\u70b9\u5728\u62d3\u6251\u4e2d\u7684\u4f4d\u7f6e\uff1b<\/li>\n\n\n\n<li>\u96c6\u7fa4\u6269\u5bb9\u524d\uff0c\u786e\u8ba4\u5f53\u524d\u62d3\u6251\u5bb9\u91cf\u548c\u8282\u70b9\u5206\u5e03\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001pt-config-diff\uff1a\u914d\u7f6e\u5dee\u5f02\u7cbe\u51c6\u5bf9\u6bd4\uff0c\u6392\u67e5\u53c2\u6570\u4e0d\u4e00\u81f4\u95ee\u9898<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u4ece\u540c\u6b65\u5f02\u5e38\u3001\u540c\u67b6\u6784\u5b9e\u4f8b\u6027\u80fd\u5dee\u5f02\uff0c\u5f88\u591a\u65f6\u5019\u90fd\u662f\u56e0\u4e3a\u914d\u7f6e\u53c2\u6570\u4e0d\u4e00\u81f4\u5bfc\u81f4\u7684\u3002pt-config-diff \u80fd\u5bf9\u6bd4\u4e0d\u540c MySQL \u5b9e\u4f8b\u7684\u914d\u7f6e\u3001\u5b9e\u4f8b\u4e0e\u914d\u7f6e\u6587\u4ef6\u7684\u5dee\u5f02\uff0c\u4ee5\u6e05\u6670\u7684\u5dee\u5f02\u8868\u683c\u8f93\u51fa\u7ed3\u679c\uff0c\u5feb\u901f\u5b9a\u4f4d\u53c2\u6570\u4e0d\u4e00\u81f4\u70b9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u547d\u4ee4\uff08\u4e09\u5927\u6838\u5fc3\u573a\u666f\uff09<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5bf9\u6bd4\u573a\u666f<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u547d\u4ee4\u793a\u4f8b<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u4e24\u4e2a MySQL \u5b9e\u4f8b\u914d\u7f6e\u5bf9\u6bd4<\/td><td class=\"has-text-align-left\" data-align=\"left\">pt-config-diff h=192.168.184.151,u=dba,p=Id81Gdac_a h=192.168.184.152,u=dba,p=Id81Gdac_a<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5b9e\u4f8b\u914d\u7f6e\u4e0e\u672c\u5730\u6587\u4ef6\u5bf9\u6bd4<\/td><td class=\"has-text-align-left\" data-align=\"left\">pt-config-diff \/data\/mysql\/conf\/my.cnf h=192.168.184.151,u=dba,p=Id81Gdac_a<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u4e24\u4e2a\u672c\u5730\u914d\u7f6e\u6587\u4ef6\u5bf9\u6bd4<\/td><td class=\"has-text-align-left\" data-align=\"left\">pt-config-diff \/data\/mysql\/conf\/my.cnf \/data\/my.cnf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u5dee\u5f02\u7ed3\u679c\u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Variable                  maria-01                  maria-01\n========================= ========================= =========================\ngtid_executed             4d197ac0-07e6-11f1-a60... 4d197ac0-07e6-11f1-a60...\ngtid_purged               4d197ac0-07e6-11f1-a60... 4d197ac0-07e6-11f1-a60...\nserver_id                 184151                    184152\nserver_uuid               4d197ac0-07e6-11f1-a60... 91809753-26bb-11f1-9dc...\n\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3b\u4ece\u5b9e\u4f8b\u53c2\u6570\u4e00\u81f4\u6027\u5168\u9762\u6821\u9a8c\uff1b<\/li>\n\n\n\n<li>\u914d\u7f6e\u6587\u4ef6\u8fed\u4ee3\u540e\uff0c\u5bf9\u6bd4\u65b0\u7248\u672c\u4e0e\u65e7\u7248\u672c\u7684\u4fee\u6539\u70b9\uff1b<\/li>\n\n\n\n<li>\u5b9e\u4f8b\u6545\u969c\u540e\uff0c\u5bf9\u6bd4\u5f53\u524d\u914d\u7f6e\u4e0e\u5907\u4efd\u914d\u7f6e\u7684\u5dee\u5f02\uff0c\u5b9a\u4f4d\u914d\u7f6e\u53d8\u66f4\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001pt-show-grants\uff1a\u6743\u9650\u6807\u51c6\u5316\u5bfc\u51fa\uff0c\u8f7b\u677e\u641e\u5b9a\u6743\u9650\u8fc1\u79fb\u4e0e\u5ba1\u8ba1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u624b\u52a8\u5bfc\u51fa MySQL \u7528\u6237\u6743\u9650\u65f6\uff0c\u4e0d\u4ec5\u683c\u5f0f\u6df7\u4e71\uff0c\u8fd8\u5bb9\u6613\u9057\u6f0f\u7528\u6237\uff0c\u8fc1\u79fb\u6743\u9650\u65f6\u66f4\u662f\u9ebb\u70e6\u3002pt-show-grants \u80fd\u4ee5\u6807\u51c6\u5316\u7684 GRANT \u8bed\u53e5\u8f93\u51fa\u6240\u6709\u7528\u6237\u6743\u9650\uff0c\u8fd8\u652f\u6301\u751f\u6210 DROP USER \u8bed\u53e5\uff0c\u5b8c\u7f8e\u89e3\u51b3\u6743\u9650\u5bfc\u51fa\u3001\u8fc1\u79fb\u3001\u5ba1\u8ba1\u7684\u75db\u70b9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u547d\u4ee4<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u57fa\u7840\u7528\u6cd5\uff1a\u5bfc\u51fa\u6240\u6709\u7528\u6237\u7684\u6743\u9650\uff08\u542b\u6807\u51c6\u5316GRANT\u8bed\u53e5\uff09\npt-show-grants h=192.168.184.151,u=dba,p=Id81Gdac_a\n# \u8fdb\u9636\u7528\u6cd5\uff1a\u540c\u65f6\u751f\u6210DROP USER\u8bed\u53e5\uff08\u8fc1\u79fb\u524d\u6e05\u7406\u76ee\u6807\u5b9e\u4f8b\u65e7\u7528\u6237\uff09\npt-show-grants h=192.168.184.151,u=dba,p=Id81Gdac_a --drop\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa\u7ed3\u679c\u793a\u4f8b\uff08\u542b DROP\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>DROP USER 'app_read'@'%';\nGRANT SELECT ON `app_db`.* TO 'app_read'@'%' IDENTIFIED BY PASSWORD '*8F4328877580D8B4A8E4360C532F4B85E8D26088';\nDROP USER 'dba'@'192.168.12.%';\nGRANT ALL PRIVILEGES ON *.* TO 'dba'@'192.168.12.%' IDENTIFIED BY PASSWORD '*A1B3C5E7F9876543210ABCDEF1234567890ABCDEF';\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u5e93\u8fc1\u79fb\u65f6\uff0c\u6279\u91cf\u5bfc\u51fa\u6e90\u5b9e\u4f8b\u6743\u9650\u5e76\u4e00\u952e\u5bfc\u5165\u76ee\u6807\u5b9e\u4f8b\uff1b<\/li>\n\n\n\n<li>\u5b9a\u671f\u6743\u9650\u5ba1\u8ba1\uff0c\u6e05\u6670\u67e5\u770b\u5404\u7528\u6237\u7684\u6743\u9650\u8303\u56f4\uff0c\u6392\u67e5\u8d8a\u6743\u95ee\u9898\uff1b<\/li>\n\n\n\n<li>\u6e05\u7406\u5197\u4f59\u7528\u6237\u65f6\uff0c\u751f\u6210\u6807\u51c6\u5316 DROP \u8bed\u53e5\uff0c\u907f\u514d\u624b\u52a8\u62fc\u5199\u9519\u8bef\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001pt-duplicate-key-checker\uff1a\u91cd\u590d\u7d22\u5f15\u68c0\u6d4b\uff0c\u91ca\u653e\u78c1\u76d8\u4e0e\u5199\u5165\u6027\u80fd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d22\u5f15\u8bbe\u8ba1\u4e0d\u5408\u7406\uff0c\u51fa\u73b0\u91cd\u590d\u6216\u5197\u4f59\u7d22\u5f15\uff0c\u4e0d\u4ec5\u4f1a\u6d6a\u8d39\u78c1\u76d8\u7a7a\u95f4\uff0c\u8fd8\u4f1a\u5bfc\u81f4 INSERT\/UPDATE\/DELETE \u64cd\u4f5c\u65f6\u9700\u8981\u66f4\u65b0\u591a\u4e2a\u7d22\u5f15\uff0c\u5927\u5e45\u964d\u4f4e\u5199\u5165\u6027\u80fd\u3002pt-duplicate-key-checker \u80fd\u626b\u63cf\u6240\u6709\u8868\u7684\u7d22\u5f15\uff0c\u7cbe\u51c6\u8bc6\u522b\u91cd\u590d \/ \u5197\u4f59\u7d22\u5f15\uff0c\u5e76\u7ed9\u51fa\u76f4\u63a5\u53ef\u7528\u7684\u5220\u9664\u5efa\u8bae\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u6b65\u9aa4<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u6a21\u62df\u91cd\u590d\u7d22\u5f15\u573a\u666f\uff08\u5b9e\u9645\u8fd0\u7ef4\u4e2d\u5e38\u89c1\u7684\u8bef\u64cd\u4f5c\uff09<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u5207\u6362\u5230\u6d4b\u8bd5\u6570\u636e\u5e93maria\nuse maria;\n-- \u521b\u5efa\u8868\uff0c\u540c\u65f6\u6dfb\u52a0\u4e24\u4e2a\u91cd\u590d\u7684name\u7d22\u5f15\uff08idx_name\u548cindex_name\uff09\ncreate table duplicate_key(\n  id int not null auto_increment primary key,\n  name varchar(10),\n  key idx_name(name),  -- \u7d22\u5f151\n  key index_name(name) -- \u7d22\u5f152\uff08\u4e0eidx_name\u91cd\u590d\uff09\n)engine=innodb;\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u68c0\u6d4b\u91cd\u590d\u7d22\u5f15\u5e76\u83b7\u53d6\u5220\u9664\u5efa\u8bae<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>pt-duplicate-key-checker h=192.168.184.151,u=dba,p=Id81Gdac_a\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u68c0\u6d4b\u7ed3\u679c\u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u8868maria.duplicate_key\n# \u91cd\u590d\u7d22\u5f15\uff1aindex_name\uff08\u57fa\u4e8ename\u5b57\u6bb5\uff0c\u4e0eidx_name\u91cd\u590d\uff09\n########################################################################\n# \u5efa\u8bae\u5220\u9664\u91cd\u590d\u7d22\u5f15\uff1a\nALTER TABLE `maria`.`duplicate_key` DROP INDEX `index_name`;\n########################################################################\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8868\u7ed3\u6784\u4f18\u5316\uff0c\u6e05\u7406\u5386\u53f2\u9057\u7559\u7684\u91cd\u590d \/ \u5197\u4f59\u7d22\u5f15\uff1b<\/li>\n\n\n\n<li>\u65b0\u8868\u4e0a\u7ebf\u524d\uff0c\u68c0\u67e5\u7d22\u5f15\u8bbe\u8ba1\u662f\u5426\u5408\u7406\uff0c\u4ece\u6e90\u5934\u89c4\u907f\u5197\u4f59\uff1b<\/li>\n\n\n\n<li>\u5b9a\u671f\u7ef4\u62a4\uff0c\u51cf\u5c11\u7d22\u5f15\u5bf9\u5199\u5165\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u63d0\u5347\u6570\u636e\u5e93\u6574\u4f53\u6548\u7387\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001pt-diskstats\uff1a\u78c1\u76d8 IO \u5b9e\u65f6\u76d1\u63a7\uff0c\u5feb\u901f\u5b9a\u4f4d IO \u74f6\u9888<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL \u7684\u5f88\u591a\u6162\u67e5\u8be2\u95ee\u9898\uff0c\u6839\u6e90\u5e76\u4e0d\u662f SQL \u672c\u8eab\uff0c\u800c\u662f\u78c1\u76d8 IO \u74f6\u9888 \u2014\u2014 \u78c1\u76d8\u8bfb\u5199\u901f\u5ea6\u6162\u3001IO \u9971\u548c\u90fd\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u54cd\u5e94\u5ef6\u8fdf\u3002pt-diskstats \u80fd\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u78c1\u76d8\u7684 IO \u72b6\u6001\uff0c\u652f\u6301\u6307\u5b9a\u78c1\u76d8\u76d1\u63a7\uff0c\u7cbe\u51c6\u5b9a\u4f4d IO \u74f6\u9888\u6240\u5728\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u6218\u547d\u4ee4<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u57fa\u7840\u7528\u6cd5\uff1a\u76d1\u63a7\u6240\u6709\u78c1\u76d8IO\uff08\u5b9e\u65f6\u8f93\u51fa\uff0c\u6309Ctrl+C\u505c\u6b62\uff09\npt-diskstats\n# \u8fdb\u9636\u7528\u6cd5\uff1a\u4ec5\u76d1\u63a7\u6307\u5b9a\u78c1\u76d8\uff08\u5982\u7cfb\u7edf\u76d8vda\uff0c\u907f\u514d\u65e0\u5173\u78c1\u76d8\u5e72\u6270\uff09\npt-diskstats --device vda\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa\u6838\u5fc3\u5b57\u6bb5\u89e3\u6790<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5b57\u6bb5<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">device<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u78c1\u76d8\u8bbe\u5907\u540d\uff08\u5982 vda\u3001sdb\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">rd_s<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6bcf\u79d2\u8bfb\u8bf7\u6c42\u6570<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">wr_s<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6bcf\u79d2\u5199\u8bf7\u6c42\u6570<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">rd_mb_s<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6bcf\u79d2\u8bfb\u541e\u5410\u91cf\uff08MB\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">wr_mb_s<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6bcf\u79d2\u5199\u541e\u5410\u91cf\uff08MB\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">rd_rt<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u8bfb\u8bf7\u6c42\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\uff08ms\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">wr_rt<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5199\u8bf7\u6c42\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\uff08ms\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">qtime<\/td><td class=\"has-text-align-left\" data-align=\"left\">IO \u8bf7\u6c42\u5e73\u5747\u7b49\u5f85\u65f6\u95f4\uff08\u6beb\u79d2\uff0c\u6b63\u5e38\u5efa\u8bae &lt; 10ms\uff0c\u503c\u8d8a\u9ad8\u538b\u529b\u8d8a\u5927\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">stime<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u78c1\u76d8\u5904\u7406 IO \u8bf7\u6c42\u7684\u5e73\u5747\u65f6\u95f4\uff08\u6beb\u79d2\uff0c\u53cd\u6620\u78c1\u76d8\u672c\u8eab\u6027\u80fd\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">busy<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u78c1\u76d8 IO \u4f7f\u7528\u7387\uff08%\uff0c\u503c &gt; 80% \u8bf4\u660e\u78c1\u76d8\u5df2\u9971\u548c\uff0c\u9700\u4f18\u5316 \/ \u6269\u5bb9\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MySQL \u54cd\u5e94\u6162\u65f6\uff0c\u6392\u67e5\u662f\u5426\u56e0\u78c1\u76d8 IO \u9971\u548c\u5bfc\u81f4\uff1b<\/li>\n\n\n\n<li>\u6279\u91cf\u5bfc\u5165\u6570\u636e\uff08\u5982 LOAD DATA\uff09\u3001\u5927\u8868\u5907\u4efd\u65f6\uff0c\u76d1\u63a7\u78c1\u76d8\u5199\u5165 \/ \u8bfb\u53d6\u538b\u529b\uff1b<\/li>\n\n\n\n<li>\u65e5\u5e38\u5de1\u68c0\uff0c\u8bc4\u4f30\u78c1\u76d8\u6027\u80fd\u662f\u5426\u6ee1\u8db3\u4e1a\u52a1\u53d1\u5c55\u9700\u6c42\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5199\u5728\u6700\u540e\uff1aPT \u5de5\u5177\u7684\u8fd0\u7ef4\u4ef7\u503c\uff0c\u4e0d\u6b62\u662f \u201c\u63d0\u6548\u201d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u5929\u5206\u4eab\u7684\u8fd9 7 \u4e2a PT \u5de5\u5177\uff0c\u8986\u76d6\u4e86 MySQL \u8fd0\u7ef4\u4ece<strong>\u4fe1\u606f\u91c7\u96c6\u2192\u914d\u7f6e\u6821\u9a8c\u2192\u62d3\u6251\u7ba1\u7406\u2192\u6743\u9650\u63a7\u5236\u2192\u7d22\u5f15\u4f18\u5316\u2192\u8d44\u6e90\u76d1\u63a7<\/strong>\u7684\u5168\u6d41\u7a0b\uff0c\u5728\u5b9e\u9645\u5de5\u4f5c\u4e2d\uff0c\u7528\u597d\u8fd9\u4e9b\u5de5\u5177\u80fd\u5e26\u6765\u4e09\u5927\u6838\u5fc3\u4ef7\u503c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u964d\u672c<\/strong>\uff1a\u5927\u5e45\u51cf\u5c11\u624b\u52a8\u64cd\u4f5c\u65f6\u95f4\uff0c\u6bd4\u5982\u5b9e\u4f8b\u5168\u91cf\u4fe1\u606f\u6c47\u603b\uff0c\u4ece\u624b\u52a8\u6572\u547d\u4ee4\u6574\u7406 1 \u5c0f\u65f6\u7f29\u77ed\u81f3 1 \u5206\u949f\uff0c\u907f\u514d\u91cd\u590d\u52b3\u52a8\uff1b<\/li>\n\n\n\n<li><strong>\u63d0\u6548<\/strong>\uff1a\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898\u6839\u6e90\uff0c\u4e0d\u7ba1\u662f\u62d3\u6251\u6df7\u4e71\u3001\u53c2\u6570\u4e0d\u4e00\u81f4\uff0c\u8fd8\u662f IO \u74f6\u9888\u3001\u91cd\u590d\u7d22\u5f15\uff0c\u90fd\u80fd\u7cbe\u51c6\u6392\u67e5\uff0c\u4e0d\u7528\u518d\u9760\u7ecf\u9a8c\u778e\u731c\uff1b<\/li>\n\n\n\n<li><strong>\u907f\u9669<\/strong>\uff1a\u4e0a\u7ebf\u524d\u901a\u8fc7\u914d\u7f6e\u6821\u9a8c\u62e6\u622a\u53c2\u6570\u98ce\u9669\uff0c\u8fd0\u7ef4\u4e2d\u901a\u8fc7\u6807\u51c6\u5316\u64cd\u4f5c\u51cf\u5c11\u4eba\u4e3a\u9519\u8bef\uff0c\u4ece\u6e90\u5934\u964d\u4f4e\u6570\u636e\u5e93\u6545\u969c\u6982\u7387\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u5efa\u8bae\u5927\u5bb6\u7ed3\u5408\u81ea\u8eab\u4e1a\u52a1\u573a\u666f\u7075\u6d3b\u7ec4\u5408\u4f7f\u7528\uff1a\u6bd4\u5982\u5b9e\u4f8b\u4e0a\u7ebf\u524d\uff0c\u7528 pt-variable-advisor \u505a\u914d\u7f6e\u4f53\u68c0 + pt-config-diff \u505a\u4e3b\u4ece\u53c2\u6570\u4e00\u81f4\u6027\u6821\u9a8c\uff1b\u65e5\u5e38\u5de1\u68c0\u65f6\uff0c\u7528 pt-mysql-summary \u505a\u5168\u91cf\u4fe1\u606f\u91c7\u96c6 + pt-diskstats \u505a IO \u76d1\u63a7\uff1b\u8868\u7ed3\u6784\u4f18\u5316\u65f6\uff0c\u7528 pt-duplicate-key-checker \u6e05\u7406\u5197\u4f59\u7d22\u5f15\u3002\u6162\u6162\u628a\u8fd9\u4e9b\u5de5\u5177\u878d\u5165\u65e5\u5e38\u5de5\u4f5c\uff0c\u5f62\u6210\u6807\u51c6\u5316\u7684 MySQL \u8fd0\u7ef4\u6d41\u7a0b\uff0c\u624d\u80fd\u8ba9\u6570\u636e\u5e93\u96c6\u7fa4\u66f4\u7a33\u5b9a\uff0c\u8fd0\u7ef4\u5de5\u4f5c\u66f4\u8f7b\u677e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u5728\u4f7f\u7528 PT \u5de5\u5177\u7684\u8fc7\u7a0b\u4e2d\u9047\u5230\u53c2\u6570\u62a5\u9519\u3001\u6743\u9650\u4e0d\u8db3\u7b49\u95ee\u9898\uff0c\u5927\u5bb6\u53ef\u4ee5\u53c2\u8003 Percona \u5b98\u65b9\u6587\u6863\uff0c\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u4ea4\u6d41\uff0c\u4e00\u8d77\u63a2\u8ba8\u89e3\u51b3\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 MySQL \u6570\u636e\u5e93\u65e5\u5e38\u8fd0\u7ef4\u4e2d\uff0c\u6211\u4eec\u603b\u4f1a\u9047\u5230\u5404\u7c7b\u7e41\u7410\u95ee\u9898\uff1a\u65b0\u63a5\u624b\u5b9e\u4f8b\u4e0d\u77e5\u5982\u4f55\u5feb\u901f\u6478\u5e95\u3001\u53c2\u6570\u914d\u7f6e\u6015\u7559\u5751\u3001\u4e3b\u4ece\u62d3<\/p>\n<div class=\"more-link\">\n\t\t\t\t <a href=\"https:\/\/yunyanglib.cn\/?p=1254\" class=\"link-btn theme-btn\"><span>Read More <\/span> <i class=\"fa fa-caret-right\"><\/i><\/a>\n\t\t\t<\/div>\n","protected":false},"author":1,"featured_media":1259,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[16],"class_list":["post-1254","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql","tag-mysql"],"_links":{"self":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1254"}],"version-history":[{"count":5,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1254\/revisions"}],"predecessor-version":[{"id":1260,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1254\/revisions\/1260"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/media\/1259"}],"wp:attachment":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}