{"id":3810,"date":"2025-07-06T14:04:29","date_gmt":"2025-07-06T06:04:29","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3810"},"modified":"2025-07-06T14:04:29","modified_gmt":"2025-07-06T06:04:29","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8d%e6%8d%9f%e5%9d%8f%e7%9a%84-mysql-%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/07\/06\/%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8d%e6%8d%9f%e5%9d%8f%e7%9a%84-mysql-%e8%a1%a8\/","title":{"rendered":"\u5982\u4f55\u4fee\u590d\u635f\u574f\u7684 MySQL \u8868"},"content":{"rendered":"\n<p>\u4fee\u590d\u635f\u574f\u7684 MySQL \u8868\uff0c\u662f\u6570\u636e\u5e93\u7ef4\u62a4\u4e2d\u7684\u5e38\u89c1\u64cd\u4f5c\uff0c\u5c24\u5176\u5728\u65ad\u7535\u3001\u78c1\u76d8\u9519\u8bef\u3001\u6587\u4ef6\u7cfb\u7edf\u635f\u574f\u6216\u672a\u6b63\u5e38\u5173\u95ed MySQL \u670d\u52a1\u65f6\uff0c\u5bb9\u6613\u5bfc\u81f4 MyISAM \u6216 InnoDB \u8868\u51fa\u73b0\u635f\u574f\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u4ece\u4e13\u4e1a\u89d2\u5ea6<strong>\u5168\u9762\u8bb2\u89e3\u4fee\u590d MySQL \u8868\u7684\u65b9\u6cd5<\/strong>\uff0c\u6309\u5b58\u50a8\u5f15\u64ce\u5206\u7c7b\uff08MyISAM \u548c InnoDB\uff09\u3001\u63d0\u4f9b\u591a\u79cd\u6062\u590d\u9014\u5f84\u3001\u81ea\u52a8\u5316\u5efa\u8bae\u4ee5\u53ca\u98ce\u9669\u63d0\u793a\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u8bc6\u522b\u662f\u5426\u8868\u5df2\u635f\u574f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9519\u8bef\u63d0\u793a\u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u67e5\u8be2\u65f6\u62a5\u9519\uff1a\nTable 'mytable' is marked as crashed and should be repaired\n\n# \u542f\u52a8 MySQL \u62a5\u9519\uff1a\nIncorrect key file for table 'mytable'; try to repair it<\/code><\/pre>\n\n\n\n<p>\u6267\u884c\u4e0b\u9762\u547d\u4ee4\u786e\u8ba4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CHECK TABLE mytable;<\/code><\/pre>\n\n\n\n<p>\u8fd4\u56de\u7c7b\u4f3c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+---------+-------+----------+--------------------------+\n| Table   | Op    | Msg_type | Msg_text                 |\n+---------+-------+----------+--------------------------+\n| mytable | check | error    | Table is marked as crashed |\n+---------+-------+----------+--------------------------+<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. MyISAM \u8868\u7684\u4fee\u590d\u65b9\u6cd5<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>MyISAM \u8868\u901a\u5e38\u4ee5 <code>.MYD<\/code>\uff08\u6570\u636e\uff09\u548c <code>.MYI<\/code>\uff08\u7d22\u5f15\uff09\u6587\u4ef6\u5b58\u5728\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u4e00\uff1aREPAIR TABLE\uff08\u63a8\u8350\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>REPAIR TABLE mytable;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5feb\u901f\u4fee\u590d <code>.MYI<\/code> \u6587\u4ef6\u3002<\/li>\n\n\n\n<li>\u53ef\u52a0\u9009\u9879\uff1a<code>REPAIR TABLE mytable QUICK;<\/code>\uff08\u4ec5\u4fee\u7d22\u5f15\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 <code>myisamchk<\/code> \u5de5\u5177\uff08\u79bb\u7ebf\uff09<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u9700\u5148\u505c\u6b62 <code>mysqld<\/code>\uff0c\u5426\u5219\u53ef\u80fd\u9020\u6210\u7834\u574f\u3002<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl stop mysql\n\ncd \/var\/lib\/mysql\/mydatabase\nmyisamchk -r mytable.MYI         # \u4fee\u590d\nmyisamchk -o mytable.MYI         # \u5f3a\u529b\u4fee\u590d\uff08\u66f4\u6162\uff09<\/code><\/pre>\n\n\n\n<p><strong>\u5efa\u8bae\u6267\u884c\u524d\u5907\u4efd<\/strong> <code>.MYD<\/code> \u548c <code>.MYI<\/code> \u6587\u4ef6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. InnoDB \u8868\u7684\u4fee\u590d\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9519\u8bef\u73b0\u8c61<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>InnoDB: corruption<\/code><\/li>\n\n\n\n<li><code>InnoDB: Page checksum mismatch<\/code><\/li>\n\n\n\n<li><code>InnoDB: Trying to access page outside the tablespace<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u4e00\uff1a\u8f6f\u6062\u590d\uff08innodb_force_recovery\uff09<\/h3>\n\n\n\n<p>\u7f16\u8f91 <code>my.cnf<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;mysqld]\ninnodb_force_recovery=1   # \u53ef\u8c03\u5230 6\uff0c\u8d8a\u9ad8\u8d8a\u5371\u9669<\/code><\/pre>\n\n\n\n<p>\u7136\u540e\u91cd\u542f MySQL\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl restart mysql<\/code><\/pre>\n\n\n\n<p>\u5bfc\u51fa\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysqldump -u root -p --single-transaction mydb &gt; mydb_recovered.sql<\/code><\/pre>\n\n\n\n<p>\u7136\u540e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5220\u9664\u6570\u636e\u76ee\u5f55\u4e2d\u7684 <code>.ibd<\/code>\u3001<code>.frm<\/code> \u6587\u4ef6\uff1b<\/li>\n\n\n\n<li>\u6e05\u9664 <code>innodb_force_recovery<\/code> \u8bbe\u7f6e\uff1b<\/li>\n\n\n\n<li>\u91cd\u65b0\u5bfc\u5165\u6570\u636e\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql -u root -p &lt; mydb_recovered.sql<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u26a0\ufe0f <strong>\u91cd\u8981\u63d0\u793a<\/strong>\uff1a<code>innodb_force_recovery<\/code> \u2265 4 \u65f6\u4e0d\u80fd\u5199\u6570\u636e\uff0c\u4ec5\u80fd\u8bfb &amp; dump\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u4e8c\uff1a\u4ece\u5907\u4efd\u6216 binlog \u6062\u590d<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>xtrabackup<\/code> \u7269\u7406\u5907\u4efd\uff08\u652f\u6301 InnoDB\uff09<\/li>\n\n\n\n<li>\u4f7f\u7528 <code>mysqlbinlog<\/code> \u6062\u590d\u6700\u8fd1\u7684\u6570\u636e\u64cd\u4f5c<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u8868\u6062\u590d\u4e4b\u540e\u7684\u64cd\u4f5c\u5efa\u8bae<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u64cd\u4f5c<\/th><th>\u547d\u4ee4<\/th><\/tr><\/thead><tbody><tr><td>\u4f18\u5316\u8868\u7ed3\u6784<\/td><td><code>OPTIMIZE TABLE mytable;<\/code><\/td><\/tr><tr><td>\u91cd\u5efa\u7d22\u5f15<\/td><td><code>ALTER TABLE mytable ENGINE=InnoDB;<\/code><\/td><\/tr><tr><td>\u8f6c\u4e3a InnoDB\uff08\u5982\u9002\u7528\uff09<\/td><td><code>ALTER TABLE mytable ENGINE=InnoDB;<\/code><\/td><\/tr><tr><td>\u68c0\u67e5\u5b8c\u6574\u6027<\/td><td><code>CHECK TABLE mytable;<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u81ea\u52a8\u5316\u76d1\u63a7\u4e0e\u4fee\u590d\u5efa\u8bae<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bbe\u7f6e\u6162\u67e5\u8be2\/\u9519\u8bef\u65e5\u5fd7\u76d1\u63a7\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>mysql.err<\/code> \u6216 <code>mysqld.log<\/code><\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u642d\u914d <code>zabbix \/ prometheus \/ MySQL Enterprise Monitor<\/code> \u5b9e\u65f6\u53d1\u73b0\u5f02\u5e38<\/li>\n\n\n\n<li>\u542f\u7528\u81ea\u52a8\u5907\u4efd + <code>pt-table-checksum<\/code> \u6821\u9a8c\u8868\u4e00\u81f4\u6027<\/li>\n\n\n\n<li>\u90e8\u7f72\u4e3b\u4ece\u590d\u5236\u6216 MGR \u5b9e\u73b0\u5197\u4f59<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u6743\u5a01\u8d44\u6599\u53c2\u8003<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/repair-table.html\">MySQL \u5b98\u65b9\u6587\u6863 \u2013 REPAIR TABLE<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/forcing-innodb-recovery.html\">MySQL \u5b98\u65b9\u6587\u6863 \u2013 InnoDB Recovery<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/docs.percona.com\/percona-server\/8.0\/management\/myisam-innodb-recovery.html\">Percona MyISAM\/InnoDB \u4fee\u590d\u6307\u5357<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/dev.mysql.com\/doc\/en\/myisamchk.html\">myisamchk \u5de5\u5177\u8bf4\u660e<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. \u9644\uff1a\u8868\u635f\u574f\u98ce\u9669\u9884\u9632\u5efa\u8bae<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u505a\u6cd5<\/th><th>\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>\u4f7f\u7528 InnoDB \u4ee3\u66ff MyISAM<\/td><td>\u66f4\u9ad8\u7684\u5d29\u6e83\u6062\u590d\u80fd\u529b<\/td><\/tr><tr><td>\u542f\u7528 binlog + GTID + \u5b9a\u671f\u5907\u4efd<\/td><td>\u5bb9\u707e\u4fdd\u969c<\/td><\/tr><tr><td>\u914d\u7f6e UPS \u7535\u6e90 + \u786e\u4fdd\u78c1\u76d8\u5065\u5eb7<\/td><td>\u9632\u6b62\u6587\u4ef6\u635f\u574f<\/td><\/tr><tr><td>\u907f\u514d kill -9 \u6740 MySQL \u8fdb\u7a0b<\/td><td>\u4f1a\u4e2d\u65ad InnoDB \u6b63\u5728\u5199\u5165\u7684\u6587\u4ef6<\/td><\/tr><tr><td>\u4f7f\u7528 <code>UNIX_SOCKET<\/code> \u767b\u5f55\u65b9\u5f0f<\/td><td>\u964d\u4f4e\u8bef\u64cd\u4f5c\u53ef\u80fd\u6027<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u590d\u635f\u574f\u7684 MySQL \u8868\uff0c\u662f\u6570\u636e\u5e93\u7ef4\u62a4\u4e2d\u7684\u5e38\u89c1\u64cd\u4f5c\uff0c\u5c24\u5176\u5728\u65ad\u7535\u3001\u78c1\u76d8\u9519\u8bef\u3001\u6587\u4ef6\u7cfb\u7edf\u635f\u574f\u6216\u672a\u6b63\u5e38\u5173\u95ed MySQ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3811,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-3810","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3810","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3810"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3810\/revisions"}],"predecessor-version":[{"id":3812,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3810\/revisions\/3812"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3811"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}