https://anTtutu.github.io/tags/%E4%B8%BB%E4%BB%8E%E5%A4%8D%E5%88%B6/ Recent content in 主从复制 on Anttu's Blog Hugo zh-CN Sat, 26 Dec 2020 08:00:00 +0800 https://anTtutu.github.io/post/2020-12-26-mysql-master-slave-replication/ Sat, 26 Dec 2020 08:00:00 +0800 https://anTtutu.github.io/post/2020-12-26-mysql-master-slave-replication/ <h2 id="前言">前言</h2> <p>主从复制是 mysql 高可用的基础：读写分离、故障切换、异地备份都建立在它之上。这篇整理主从搭建的完整步骤、状态检查要点，以及复制中断后的几种恢复手段——生产环境主从挂掉大多是「中断后不知道怎么安全地恢复」，这部分才是重点。</p> <h2 id="一主库master配置">一、主库（Master）配置</h2> <p><strong>1. 修改 my.cnf 开启 binlog</strong></p> <div class="highlight"><div style="background-color:#f7f7f7;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"> <table style="border-spacing:0;padding:0;margin:0;border:0;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;"> <pre tabindex="0" style="background-color:#f7f7f7;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">1 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">2 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">3 </span></code></pre></td> <td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%"> <pre tabindex="0" style="background-color:#f7f7f7;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-ini" data-lang="ini"><span style="display:flex;"><span><span style="color:#cf222e">[mysqld]</span> </span></span><span style="display:flex;"><span><span style="color:#1f2328">log-bin</span> <span style="color:#0550ae">=</span> <span style="color:#0a3069">mysql-bin</span> </span></span><span style="display:flex;"><span><span style="color:#1f2328">server-id</span> <span style="color:#0550ae">=</span> <span style="color:#0a3069">1</span> </span></span></code></pre></td></tr></table> </div> </div><p><strong>2. 重启后创建复制账号</strong></p>