mysql遇到的坑集合

主从复制问题

问题描述：在做主从复制时出现MASTER_AUTO_POSITION 无法告知主库信息

• 问题内容

Parameters MASTER_LOG_FILE, MASTER_LOG_POS, RELAY_LOG_FILE and RELAY_LOG_POS cannot be set when MASTER_AUTO_POSITION is active.

#翻译：当MASTER_AUTO_POSITION处于活动状态时，无法设置参数MASTER_LOG_FILE、MASTER_LOG_POS、RELAY_LOG_FILE和RELAY_LOG_POS。

• 错误原因

在配置文件内有开启gtid的参数

gtid-mode=on
enforce-gtid-consistency=true
log-slave-updates=1

• 解决方法

让gtid关闭

change master to master_auto_position=0;

#查看状态
db02 [(none)]>show variables like '%gtid%';
+----------------------------------+-----------+
| Variable_name                    | Value     |
+----------------------------------+-----------+
| binlog_gtid_simple_recovery      | ON        |
| enforce_gtid_consistency         | ON        |
| gtid_executed_compression_period | 1000      |
| gtid_mode                        | ON        |
| gtid_next                        | AUTOMATIC |
| gtid_owned                       |           |
| gtid_purged                      |           |
| session_track_gtids              | OFF       |
+----------------------------------+-----------+
8 rows in set (0.00 sec)

• 结果

成功告知了主库信息

db02 [(none)]>CHANGE MASTER TO
    ->  MASTER_HOST='10.0.0.51',
    ->  MASTER_USER='repl',
    ->  MASTER_PASSWORD='123',
    ->  MASTER_PORT=3306,
    ->  MASTER_LOG_FILE='mysql-bin.000010',
    ->  MASTER_LOG_POS=194,
    ->  MASTER_CONNECT_RETRY=10;
Query OK, 0 rows affected, 2 warnings (0.03 sec)