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<!DOCTYPE html><html><head><meta charSet="utf-8"/><title>MySQL主从同步：那些让人挠头的“小故障”背后大揭秘?-mysql-淘宝百科网</title><meta charset="utf-8"/><meta name="data-spm" content="a21u7r.29532586"/><meta name="keywords" content="mysql主从同步频繁故障, mysql, MySQL, 主从同步, 故障排查"/><meta name="description" content="想知道你的MySQL主从数据库为啥老是“闹别扭”？跟着我一起探索那些看似微小却可能引发大问题的故障原因吧！"/><meta name="ice-meta-count" content="4"/><meta name="aplus-core" content="aplus.js"/><meta name="def-grey" content="false"/><link rel="shortcut icon" href="//www.taobao.com/favicon.ico"/><link rel="stylesheet" href="//g.alicdn.com/main-search/new-search-suggest/0.0.18/bundle.css" data-route-link="true"/><link rel="canonical" href="https://bk.taobao.com/k/mysql_751/4180a1035d80e7db28a4f34e52d0bae0.html" data-route-link="true"/><link rel="stylesheet" type="text/css" href="https://g.alicdn.com/code/npm/@ali/tb-pc-page-tb-seo-ssr/0.0.41/css/main.css"/><link rel="stylesheet" type="text/css" 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<p>当Master上有未提交的事务，从库可能会卡住。确保Master的事务隔离级别适中，及时清理未完成的事务。</p> <h2>5. 磁盘空间不足</h2> <p>从库的空间不足可能导致复制过程失败。定期监控磁盘使用情况，及时扩容或者清理不必要的文件。</p> <h2>总结与对策</h2> <p>解决MySQL主从同步故障并非易事，但只要我们深入理解每个环节，细心排查，总能找到症结所在。记得定期维护，优化配置，才能让数据同步像心跳一样稳定。下次再遇到小故障，你就是那个冷静的运维大师啦！</p> <p>记住，数据同步的世界里没有绝对的安全，只有持续的优化。祝你在MySQL的主从同步道路上越来越顺溜！</p></div><div class="label-list"><span class="label-item"><h3 class="label-text">mysql主从同步频繁故障</h3></span><span class="label-item"><h3 class="label-text"> mysql</h3></span><span class="label-item"><h3 class="label-text"> MySQL</h3></span><span class="label-item"><h3 class="label-text"> 主从同步</h3></span><span class="label-item"><h3 class="label-text"> 故障排查</h3></span></div><div class="flex-col baike-list"><h2 class="sub-title">更多相关百科知识</h2><div class="baike-item"><a class="title" href="https://bk.taobao.com/k/mysql_751/f9ba694eae71b973c39e3a8541825753.html" target="_blank">MySQL里那个神秘的"GR"，成绩管理背后的代码缩写大揭秘</a><div class="content"><div 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