{"id":31126,"date":"2026-06-15T10:55:07","date_gmt":"2026-06-15T02:55:07","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/uncategorized\/mysql-replication-read-write-split-failover\/"},"modified":"2026-06-15T17:48:23","modified_gmt":"2026-06-15T09:48:23","slug":"mysql-replication-read-write-split-failover","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/mysql-replication-read-write-split-failover\/","title":{"rendered":"MySQL\u4e3b\u4ece\u590d\u5236\u914d\u7f6e\u5b9e\u6218\uff1a\u8bfb\u5199\u5206\u79bb\u4e0e\u6545\u969c\u5207\u6362\u65b9\u6848"},"content":{"rendered":"

\"MySQL\u4e3b\u4ece\u590d\u5236\u914d\u7f6e\u5b9e\u6218<\/p>\n

\u5f53\u4f60\u7684\u7f51\u7ad9\u65e5\u8bbf\u95ee\u91cf\u7a81\u7834 10 \u4e07 PV\uff0c\u5355\u53f0\u6570\u636e\u5e93\u670d\u52a1\u5668\u5f00\u59cb\u9891\u7e41\u51fa\u73b0\u6162\u67e5\u8be2\u544a\u8b66\uff0c\u8fd9\u65f6\u5019\u5982\u4f55\u5728\u4e0d\u5927\u5e45\u6539\u52a8\u5e94\u7528\u4ee3\u7801\u7684\u524d\u63d0\u4e0b\u63d0\u5347\u6570\u636e\u5e93\u7684\u8bfb\u5199\u80fd\u529b\uff1fMySQL\u4e3b\u4ece\u590d\u5236\uff08Replication\uff09\u914d\u5408\u8bfb\u5199\u5206\u79bb\uff08Read-Write Splitting\uff09\u662f\u76ee\u524d\u6700\u6210\u719f\u3001\u6210\u672c\u6700\u4f4e\u7684\u65b9\u6848\u4e4b\u4e00\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u51fa\u53d1\uff0c\u5e26\u4f60\u5b8c\u6210\u4e3b\u4ece\u590d\u5236\u914d\u7f6e\u3001\u8bfb\u5199\u5206\u79bb\u642d\u5efa\uff0c\u4ee5\u53ca\u6545\u969c\u5207\u6362\u65b9\u6848\u7684\u843d\u5730\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u9700\u8981 MySQL \u4e3b\u4ece\u590d\u5236<\/h2>\n

\u5728\u5355\u673a MySQL \u67b6\u6784\u4e0b\uff0c\u6240\u6709\u8bfb\u5199\u8bf7\u6c42\u96c6\u4e2d\u5728\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u3002\u968f\u7740\u4e1a\u52a1\u589e\u957f\uff0c\u4f60\u4f1a\u9047\u5230\u4e24\u4e2a\u6838\u5fc3\u74f6\u9888\uff1a<\/p>\n

\u7b2c\u4e00\u4e2a\u662f\u8bfb\u6027\u80fd\u74f6\u9888<\/strong>\u3002\u7535\u5546\u7c7b\u7f51\u7ad9\u5728\u4fc3\u9500\u671f\u95f4\uff0c\u5546\u54c1\u8be6\u60c5\u9875\u3001\u8ba2\u5355\u67e5\u8be2\u7b49\u8bfb\u64cd\u4f5c\u53ef\u80fd\u5360\u5230\u603b\u8bf7\u6c42\u7684 80% \u4ee5\u4e0a\u3002\u5355\u53f0\u670d\u52a1\u5668\u7684 CPU \u548c\u5185\u5b58\u8d44\u6e90\u6709\u9650\uff0c\u5927\u91cf\u5e76\u53d1\u8bfb\u8bf7\u6c42\u4f1a\u5bfc\u81f4\u54cd\u5e94\u65f6\u95f4\u4ece\u6beb\u79d2\u7ea7\u9000\u5316\u5230\u79d2\u7ea7\u3002\u6570\u636e\u5e93\u6027\u80fd\u4e0e\u8f6c\u5316\u7387\u76f4\u63a5\u76f8\u5173<\/a>\u2014\u2014\u6bcf\u591a 1 \u79d2\u5ef6\u8fdf\uff0c\u8f6c\u5316\u7387\u53ef\u80fd\u4e0b\u964d 7%\u3002<\/p>\n

\u7b2c\u4e8c\u4e2a\u662f\u53ef\u7528\u6027\u98ce\u9669<\/strong>\u3002\u5355\u673a\u67b6\u6784\u6ca1\u6709\u5197\u4f59\uff0c\u4e00\u65e6\u670d\u52a1\u5668\u786c\u4ef6\u6545\u969c\u6216\u78c1\u76d8\u635f\u574f\uff0c\u6574\u4e2a\u4e1a\u52a1\u5c06\u5b8c\u5168\u4e2d\u65ad\u3002\u53ef\u4ee5\u53c2\u8003\u5907\u4efd\u4e0e\u5bb9\u707e\u7b56\u7565<\/a>\u6765\u7406\u89e3\u4e3a\u4ec0\u4e48\u591a\u526f\u672c\u5b58\u50a8\u5bf9\u4e1a\u52a1\u8fde\u7eed\u6027\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

MySQL\u4e3b\u4ece\u590d\u5236\u901a\u8fc7\u5c06\u6570\u636e\u4ece\u4e3b\u5e93\uff08Master\uff09\u5f02\u6b65\u590d\u5236\u5230\u4e00\u4e2a\u6216\u591a\u4e2a\u4ece\u5e93\uff08Slave\uff09\uff0c\u5b9e\u73b0\u6570\u636e\u7684\u591a\u526f\u672c\u5b58\u50a8\u3002\u8bfb\u8bf7\u6c42\u5206\u6563\u5230\u4ece\u5e93\u5904\u7406\uff0c\u4e3b\u5e93\u53ea\u627f\u62c5\u5199\u5165\u64cd\u4f5c\uff0c\u6574\u4f53\u541e\u5410\u91cf\u53ef\u63d0\u5347 2-5 \u500d\u3002<\/p>\n

\u4e3b\u4ece\u590d\u5236\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n

\u5728\u52a8\u624b\u914d\u7f6e\u4e4b\u524d\uff0c\u5148\u7406\u89e3 MySQL \u590d\u5236\u7684\u4e09\u4e2a\u6838\u5fc3\u7ebf\u7a0b\u3002<\/p>\n

Binlog Dump \u7ebf\u7a0b<\/strong>\u8fd0\u884c\u5728\u4e3b\u5e93\u4e0a\u3002\u5f53\u4ece\u5e93\u53d1\u8d77\u590d\u5236\u8bf7\u6c42\u65f6\uff0c\u4e3b\u5e93\u4f1a\u521b\u5efa\u8fd9\u4e2a\u7ebf\u7a0b\uff0c\u5c06\u4e8c\u8fdb\u5236\u65e5\u5fd7\uff08binlog\uff09\u4e2d\u7684\u53d8\u66f4\u4e8b\u4ef6\u53d1\u9001\u7ed9\u4ece\u5e93\u3002<\/p>\n

I\/O \u7ebf\u7a0b<\/strong>\u8fd0\u884c\u5728\u4ece\u5e93\u4e0a\u3002\u5b83\u8d1f\u8d23\u8fde\u63a5\u4e3b\u5e93\uff0c\u63a5\u6536 binlog \u4e8b\u4ef6\u5e76\u5199\u5165\u672c\u5730\u7684\u4e2d\u7ee7\u65e5\u5fd7\uff08Relay Log\uff09\u3002\u4e2d\u7ee7\u65e5\u5fd7\u76f8\u5f53\u4e8e\u4ece\u5e93\u7aef\u7684\u4e34\u65f6\u7f13\u5b58\u533a\u3002<\/p>\n

SQL \u7ebf\u7a0b<\/strong>\u540c\u6837\u8fd0\u884c\u5728\u4ece\u5e93\u4e0a\u3002\u5b83\u8bfb\u53d6\u4e2d\u7ee7\u65e5\u5fd7\u4e2d\u7684\u4e8b\u4ef6\u5e76\u9010\u6761\u91cd\u653e\uff0c\u4ece\u800c\u5b9e\u73b0\u6570\u636e\u540c\u6b65\u3002MySQL 5.7 \u4e4b\u540e\u652f\u6301\u591a\u7ebf\u7a0b\u590d\u5236\uff08MTS\uff09\uff0c\u53ef\u4ee5\u5e76\u884c\u56de\u653e\u4e0d\u540c\u6570\u636e\u5e93\u7684\u4e8b\u52a1\uff0c\u663e\u8457\u964d\u4f4e\u590d\u5236\u5ef6\u8fdf\u3002<\/p>\n

\u4ece\u5e93\u901a\u8fc7 `CHANGE MASTER TO` \u8bed\u53e5\u8bb0\u5f55\u4e3b\u5e93\u7684\u8fde\u63a5\u4fe1\u606f\uff0c\u5e76\u7528 `START SLAVE` \u542f\u52a8\u590d\u5236\u3002<\/p>\n

\u914d\u7f6e\u524d\u7684\u73af\u5883\u51c6\u5907<\/h2>\n

\u6b63\u5f0f\u914d\u7f6e\u524d\uff0c\u9700\u8981\u786e\u8ba4\u4ee5\u4e0b\u6761\u4ef6\uff1a<\/p>\n

  • MySQL \u7248\u672c<\/strong>\uff1a\u4e3b\u4ece\u5e93\u5efa\u8bae\u4f7f\u7528\u76f8\u540c\u7684 MySQL \u5927\u7248\u672c\uff08\u5982\u5747\u4e3a 5.7 \u6216\u5747\u4e3a 8.0\uff09\u3002\u8de8\u5927\u7248\u672c\u590d\u5236\u53ef\u80fd\u51fa\u73b0\u517c\u5bb9\u6027\u95ee\u9898\u3002<\/li>\n
  • \u7f51\u7edc\u4e92\u901a<\/strong>\uff1a\u4e3b\u4ece\u5e93\u4e4b\u95f4\u9700\u8981\u5f00\u653e MySQL \u7aef\u53e3\uff08\u9ed8\u8ba4 3306\uff09\u3002\u540c\u4e00\u5185\u7f51\uff08VPS \u96c6\u7fa4\uff09\u5ef6\u8fdf\u901a\u5e38\u5728 1ms \u4ee5\u5185\uff1b\u8de8\u673a\u623f\u9700\u8981\u8bc4\u4f30\u7f51\u7edc\u5e26\u5bbd\uff08\u5373\u5355\u4f4d\u65f6\u95f4\u5185\u53ef\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff09\u5bf9\u590d\u5236\u7684\u5f71\u54cd\u3002<\/li>\n
  • \u670d\u52a1\u5668\u914d\u7f6e<\/strong>\uff1a\u4ece\u5e93\u7684\u78c1\u76d8 I\/O \u548c\u5185\u5b58\u4e0d\u5e94\u4f4e\u4e8e\u4e3b\u5e93\u7684 50%\uff0c\u5426\u5219\u5bb9\u6613\u51fa\u73b0\u590d\u5236\u5ef6\u8fdf\u3002\u9009\u62e9\u5408\u9002\u7684\u72ec\u7acb\u670d\u52a1\u5668\u80fd\u786e\u4fdd\u4ece\u5e93\u8ddf\u5f97\u4e0a\u4e3b\u5e93\u7684\u5199\u5165\u8282\u594f\u3002\u5982\u679c\u4f60\u4f7f\u7528 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u96c6\u7fa4\uff0c\u786e\u4fdd\u4e3b\u4ece\u5e93\u5728\u540c\u4e00\u5185\u7f51\u4e2d\u4ee5\u964d\u4f4e\u590d\u5236\u5ef6\u8fdf\u3002<\/li>\n
  • \u6570\u636e\u4e00\u81f4\u6027<\/strong>\uff1a\u5df2\u6709\u6570\u636e\u7684\u4e3b\u5e93\uff0c\u9700\u8981\u5148\u505a\u5168\u91cf\u5907\u4efd\uff08\u5982 `mysqldump` \u6216 `xtrabackup`\uff09\u5e76\u5728\u4ece\u5e93\u4e0a\u6062\u590d\u3002<\/li>\n

    \u4e3b\u4ece\u590d\u5236\u914d\u7f6e\u5b9e\u6218<\/h2>\n

    \u4ee5\u4e0b\u914d\u7f6e\u57fa\u4e8e MySQL 8.0\uff0c\u4f7f\u7528 GTID\uff08\u5168\u5c40\u4e8b\u52a1\u6807\u8bc6\u7b26\uff09\u6a21\u5f0f\u3002GTID \u8ba9\u4ece\u5e93\u53ef\u4ee5\u81ea\u52a8\u5b9a\u4f4d\u590d\u5236\u4f4d\u70b9\uff0c\u65e0\u9700\u624b\u52a8\u6307\u5b9a binlog \u6587\u4ef6\u540d\u548c\u504f\u79fb\u91cf\u3002<\/p>\n

    \u7b2c\u4e00\u6b65\uff1a\u914d\u7f6e\u4e3b\u5e93<\/h3>\n

    \u7f16\u8f91\u4e3b\u5e93\u7684 MySQL \u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u4f4d\u4e8e `\/etc\/my.cnf`\uff09\uff0c\u5728 `[mysqld]` \u6bb5\u6dfb\u52a0\uff1a<\/p>\n

    server-id = 1\nlog-bin = mysql-bin\nbinlog_format = ROW\ngtid_mode = ON\nenforce_gtid_consistency = ON\nbinlog_expire_logs_seconds = 604800<\/code><\/pre>\n
    `server-id` \u662f\u4e3b\u5e93\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u96c6\u7fa4\u5185\u6bcf\u53f0\u5b9e\u4f8b\u5fc5\u987b\u4e0d\u540c\u3002`binlog_format = ROW` \u8bb0\u5f55\u884c\u7ea7\u53d8\u66f4\uff0c\u6bd4 STATEMENT \u6a21\u5f0f\u66f4\u5b89\u5168\u3002\u4fee\u6539\u5b8c\u6210\u540e\u91cd\u542f MySQL\uff1a<\/p>\n
    sudo systemctl restart mysql<\/code><\/pre>\n
    \u521b\u5efa\u590d\u5236\u4e13\u7528\u8d26\u53f7\uff1a<\/p>\n
    CREATE USER ‘repl_user’@’%’ IDENTIFIED BY ‘YourSecurePassword’;\nGRANT REPLICATION SLAVE ON .<\/em> TO ‘repl_user’@’%’;\nFLUSH PRIVILEGES;<\/code><\/pre>\n
    \u7b2c\u4e8c\u6b65\uff1a\u914d\u7f6e\u4ece\u5e93<\/h3>\n
    \u7f16\u8f91\u4ece\u5e93\u7684\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n
    server-id = 2\nrelay-log = relay-bin\nread_only = ON\ngtid_mode = ON\nenforce_gtid_consistency = ON<\/code><\/pre>\n
    `read_only = ON` \u9632\u6b62\u5e94\u7528\u8bef\u5199\u4ece\u5e93\u3002\u591a\u53f0\u4ece\u5e93\u7684 `server-id` \u9012\u589e\u8bbe\u7f6e\u3002\u91cd\u542f\u540e\u914d\u7f6e\u590d\u5236\u6307\u5411\u4e3b\u5e93\uff1a<\/p>\n
    CHANGE MASTER TO\n  MASTER_HOST = ‘\u4e3b\u5e93IP’,\n  MASTER_PORT = 3306,\n  MASTER_USER = ‘repl_user’,\n  MASTER_PASSWORD=’*<\/em>‘,\n  MASTER_AUTO_POSITION = 1;<\/p>\n
    START SLAVE;<\/code><\/pre>\n
    \u7b2c\u4e09\u6b65\uff1a\u9a8c\u8bc1\u590d\u5236\u72b6\u6001<\/h3>\n
    \u5728\u4ece\u5e93\u4e0a\u6267\u884c\uff1a<\/p>\n
    SHOW SLAVE STATUS\\G<\/code><\/pre>\n
    \u786e\u8ba4 `Slave_IO_Running` \u548c `Slave_SQL_Running` \u5747\u4e3a `Yes`\uff0c`Seconds_Behind_Master` \u4e3a 0 \u6216\u63a5\u8fd1 0\u3002\u5728\u4e3b\u5e93\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\u540e\u4ece\u5e93\u67e5\u8be2\u9a8c\u8bc1\u540c\u6b65\u5373\u53ef\u3002<\/p>\n
    \u642d\u5efa\u8bfb\u5199\u5206\u79bb\u67b6\u6784<\/h2>\n
    \u4e3b\u4ece\u590d\u5236\u89e3\u51b3\u4e86\u6570\u636e\u540c\u6b65\uff0c\u771f\u6b63\u7684\u6027\u80fd\u63d0\u5347\u6765\u81ea\u8bfb\u5199\u5206\u79bb\u2014\u2014\u5199\u8bf7\u6c42\u8d70\u4e3b\u5e93\u3001\u8bfb\u8bf7\u6c42\u8d70\u4ece\u5e93\u3002<\/p>\n
    \u65b9\u6848\u4e00\uff1a\u57fa\u4e8e ProxySQL \u7684\u4e2d\u95f4\u4ef6\u4ee3\u7406<\/h3>\n
    ProxySQL \u4f4d\u4e8e\u5e94\u7528\u548c\u6570\u636e\u5e93\u4e4b\u95f4\uff0c\u81ea\u52a8\u5c06 SELECT \u8bed\u53e5\u8def\u7531\u5230\u4ece\u5e93\uff0cINSERT\/UPDATE\/DELETE \u8def\u7531\u5230\u4e3b\u5e93\uff1a<\/p>\n
    INSERT INTO mysql_servers (hostgroup_id, hostname, port) VALUES (10, ‘\u4e3b\u5e93IP’, 3306);\nINSERT INTO mysql_servers (hostgroup_id, hostname, port) VALUES (20, ‘\u4ece\u5e93IP’, 3306);<\/p>\n
    INSERT INTO mysql_query_rules (rule_id, active, match_pattern, destination_hostgroup)\nVALUES (1, 1, ‘^SELECT .* FOR UPDATE$’, 10),\n       (2, 1, ‘^SELECT’, 20);<\/p>\n
    LOAD MYSQL SERVERS TO RUNTIME;\nLOAD MYSQL QUERY RULES TO RUNTIME;\nSAVE MYSQL SERVERS TO DISK;\nSAVE MYSQL QUERY RULES TO DISK;<\/code><\/pre>\n
    \u5e94\u7528\u7684\u6570\u636e\u5e93\u8fde\u63a5\u6307\u5411 ProxySQL \u7684\u76d1\u542c\u7aef\u53e3\uff08\u9ed8\u8ba4 6033\uff09\uff0c\u8bfb\u5199\u5206\u79bb\u903b\u8f91\u7531 ProxySQL \u81ea\u52a8\u5904\u7406\uff0c\u5e94\u7528\u4ee3\u7801\u65e0\u9700\u4fee\u6539\u3002<\/p>\n
    \u65b9\u6848\u4e8c\uff1a\u5e94\u7528\u5c42\u4ee3\u7801\u8def\u7531<\/h3>\n
    \u5728\u5e94\u7528\u8fde\u63a5\u5c42\u5b9e\u73b0\u7b80\u5355\u8def\u7531\uff0c\u4ee5 Python SQLAlchemy \u4e3a\u4f8b\uff1a<\/p>\n
    from sqlalchemy import create_engine<\/p>\n
    master_engine = create_engine(‘mysql+pymysql:\/\/user:*<\/em>@\u4e3b\u5e93IP\/db’)\nslave_engine = create_engine(‘mysql+pymysql:\/\/user:*<\/em>@\u4ece\u5e93IP\/db’)<\/p>\n
    def get_connection(readonly=False):\n    return slave_engine.connect() if readonly else master_engine.connect()<\/code><\/pre>\n
    \u8fd9\u79cd\u65b9\u5f0f\u96f6\u4f9d\u8d56\u4f46\u9700\u4fee\u6539\u5e94\u7528\u4ee3\u7801\uff0c\u9002\u5408\u5c0f\u578b\u9879\u76ee\u3002\u5bf9\u4e8e WordPress \u7c7b CMS\uff0c\u5efa\u8bae\u4f7f\u7528 ProxySQL \u65b9\u6848\u3002<\/p>\n
    \"MySQL<\/p>\n
    \u6545\u969c\u5207\u6362\u65b9\u6848<\/h2>\n
    \u8bfb\u5199\u5206\u79bb\u89e3\u51b3\u4e86\u6027\u80fd\u95ee\u9898\uff0c\u4f46\u4e3b\u5e93\u5b95\u673a\u540e\u5199\u5165\u4ecd\u4f1a\u4e2d\u65ad\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e09\u79cd\u6545\u969c\u5207\u6362\u65b9\u6848\u3002<\/p>\n
    \u65b9\u6848\u4e00\uff1a\u624b\u52a8\u5207\u6362\uff08\u5c0f\u578b\u9879\u76ee\uff09<\/h3>\n
    \u4e3b\u5e93\u6545\u969c\u65f6\uff0cDBA \u624b\u52a8\u5c06\u4ece\u5e93\u63d0\u5347\u4e3a\u65b0\u4e3b\u5e93\uff1a<\/p>\n
    STOP SLAVE;\nRESET SLAVE ALL;\nSET GLOBAL read_only = OFF;\nSELECT @@gtid_executed;<\/code><\/pre>\n
    \u7136\u540e\u66f4\u65b0 ProxySQL \u914d\u7f6e\uff0c\u5c06\u63d0\u5347\u7684\u4ece\u5e93\u52a0\u5165\u4e3b\u5e93\u7ec4\u3002RTO\uff08\u6062\u590d\u65f6\u95f4\u76ee\u6807\uff09\u901a\u5e38\u5728 5-15 \u5206\u949f\u3002<\/p>\n
    \u65b9\u6848\u4e8c\uff1a\u57fa\u4e8e MHA \u7684\u534a\u81ea\u52a8\u5207\u6362<\/h3>\n
    MHA\uff08Master High Availability\uff09\u7531 Manager \u548c Node \u7ec4\u6210\u3002Manager \u76d1\u63a7\u4e3b\u5e93\u5065\u5eb7\u72b6\u6001\uff0c\u68c0\u6d4b\u5230\u5b95\u673a\u65f6\u81ea\u52a8\u9009\u62e9\u6570\u636e\u6700\u65b0\u7684\u4ece\u5e93\u8fdb\u884c\u63d0\u5347\u3002MHA \u7684\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\u6570\u636e\u8865\u507f<\/strong>\u673a\u5236\u2014\u2014\u4e3b\u5e93\u5b95\u673a\u65f6\u53ef\u80fd\u5b58\u5728\u672a\u540c\u6b65\u7684 binlog \u4e8b\u4ef6\uff0cMHA \u4f1a\u5c1d\u8bd5\u4ece\u65e7\u4e3b\u5e93\u78c1\u76d8\u63d0\u53d6\u5dee\u5f02\u4e8b\u4ef6\u5e76\u5e94\u7528\u5230\u65b0\u4e3b\u5e93\u3002RTO \u901a\u5e38\u5728 10-30 \u79d2\u3002<\/p>\n
    \u65b9\u6848\u4e09\uff1a\u57fa\u4e8e Orchestrator \u7684\u81ea\u52a8\u62d3\u6251\u7ba1\u7406<\/h3>\n
    Orchestrator \u662f GitHub \u5f00\u6e90\u7684\u62d3\u6251\u7ba1\u7406\u5de5\u5177\uff0c\u63d0\u4f9b Web \u754c\u9762\u548c\u7075\u6d3b\u7684\u62d3\u6251\u611f\u77e5\u80fd\u529b\u3002\u5efa\u8bae\u5c06 Orchestrator \u4e0e ProxySQL \u8054\u52a8\uff1aOrchestrator \u8d1f\u8d23\u6545\u969c\u68c0\u6d4b\u548c\u62d3\u6251\u8c03\u6574\uff0cProxySQL \u8d1f\u8d23\u6d41\u91cf\u8def\u7531\u3002\u5207\u6362\u5b8c\u6210\u540e\u901a\u8fc7\u56de\u8c03\u811a\u672c\u81ea\u52a8\u66f4\u65b0 ProxySQL \u914d\u7f6e\uff0c\u5b9e\u73b0\u7aef\u5230\u7aef\u81ea\u52a8\u6545\u969c\u5207\u6362\u3002<\/p>\n
    \"MySQL<\/p>\n
    \u76d1\u63a7\u4e0e\u8fd0\u7ef4\u8981\u70b9<\/h2>\n
    \u90e8\u7f72\u5b8c\u6210\u540e\uff0c\u5c0f\u56e2\u961f\u53ef\u89c2\u6d4b\u6027\u5b9e\u8df5<\/a>\u4e2d\u63d0\u5230\u7684\u76d1\u63a7\u601d\u8def\u540c\u6837\u9002\u7528\u4e8e\u6570\u636e\u5e93\u8fd0\u7ef4\u3002\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u6307\u6807\uff1a<\/p>\n
  • \u590d\u5236\u5ef6\u8fdf<\/strong>\uff1a\u901a\u8fc7 `Seconds_Behind_Master` \u6216 `pt-heartbeat` \u5de5\u5177\u76d1\u63a7\uff0c\u5ef6\u8fdf\u8d85\u8fc7 5 \u79d2\u9700\u8981\u6392\u67e5\u4ece\u5e93 I\/O \u6216 SQL \u7ebf\u7a0b\u74f6\u9888\u3002<\/li>\n
  • \u4ece\u5e93\u53ef\u7528\u6027<\/strong>\uff1a\u5b9a\u671f\u68c0\u6d4b\u4ece\u5e93 `Slave_IO_Running` \u548c `Slave_SQL_Running` \u72b6\u6001\uff0c\u5f02\u5e38\u65f6\u53ca\u65f6\u544a\u8b66\u3002<\/li>\n
  • \u5907\u4efd\u9a8c\u8bc1<\/strong>\uff1a\u5b9a\u671f\u6267\u884c\u6062\u590d\u6f14\u7ec3\uff0c\u786e\u4fdd\u5907\u4efd\u6587\u4ef6\u53ef\u7528\u3002\u7ed3\u5408 GTID \u53ef\u4ee5\u5feb\u901f\u642d\u5efa\u65b0\u7684\u4ece\u5e93\u8282\u70b9\u3002\u9009\u62e9\u5408\u9002\u7684 Hostease \u72ec\u7acb\u670d\u52a1\u5668\u65b9\u6848<\/a>\u4f5c\u4e3a\u4e13\u7528\u5907\u4efd\u4ece\u5e93\uff0c\u53ef\u4ee5\u907f\u514d\u5907\u4efd\u64cd\u4f5c\u5f71\u54cd\u4e3b\u5e93\u6027\u80fd\u3002<\/li>\n
    \u603b\u7ed3\u4e0e\u4e0b\u4e00\u6b65\u884c\u52a8<\/h2>\n
    MySQL\u4e3b\u4ece\u590d\u5236 + \u8bfb\u5199\u5206\u79bb + \u6545\u969c\u5207\u6362\u662f\u4e00\u5957\u7ecf\u8fc7\u5927\u91cf\u751f\u4ea7\u9a8c\u8bc1\u7684\u6570\u636e\u5e93\u9ad8\u53ef\u7528\u65b9\u6848\u3002\u4f60\u53ea\u9700\u8981 2-3 \u53f0\u670d\u52a1\u5668\u5c31\u80fd\u642d\u5efa\u8d77\u5177\u5907\u8bfb\u5199\u5206\u79bb\u548c\u81ea\u52a8\u6545\u969c\u5207\u6362\u80fd\u529b\u7684\u6570\u636e\u5e93\u96c6\u7fa4\u3002<\/p>\n
    \u5efa\u8bae\u6309\u4ee5\u4e0b\u8def\u5f84\u63a8\u8fdb\uff1a\u5148\u4ece\u4e3b\u4ece\u590d\u5236\u5f00\u59cb\uff0c\u9a8c\u8bc1\u6570\u636e\u540c\u6b65\u6b63\u786e\u6027\uff1b\u7136\u540e\u5f15\u5165 ProxySQL \u5b9e\u73b0\u8bfb\u5199\u5206\u79bb\uff0c\u89c2\u5bdf\u8bfb\u6027\u80fd\u63d0\u5347\uff1b\u6700\u540e\u6839\u636e\u4e1a\u52a1\u53ef\u7528\u6027\u8981\u6c42\u9009\u62e9\u6545\u969c\u5207\u6362\u65b9\u6848\u3002\u5bf9\u4e8e\u9700\u8981\u66f4\u9ad8 SLA \u4fdd\u969c\u7684\u4e1a\u52a1\uff0c\u53ef\u4ee5\u8003\u8651\u5347\u7ea7\u4e3a MySQL Group Replication \u6216 InnoDB Cluster\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5f53\u4f60\u7684\u7f51\u7ad9\u65e5\u8bbf\u95ee\u91cf\u7a81\u7834 10 \u4e07 PV\uff0c\u5355\u53f0\u6570\u636e\u5e93\u670d\u52a1\u5668\u5f00\u59cb\u9891\u7e41\u51fa\u73b0\u6162\u67e5\u8be2\u544a\u8b66\uff0c\u8fd9\u65f6\u5019\u5982\u4f55\u5728\u4e0d\u5927\u5e45\u6539\u52a8\u5e94\u7528\u4ee3\u7801 … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":2,"featured_media":31190,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4099],"tags":[545,4428,682,4427,3024],"class_list":["post-31126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials","tag-mysql","tag-4428","tag-682","tag-4427","tag-3024"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/06\/mysql-practical-cover.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=31126"}],"version-history":[{"count":4,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31126\/revisions"}],"predecessor-version":[{"id":31200,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31126\/revisions\/31200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/31190"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=31126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=31126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=31126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}