MySQL主从复制部署配置问题汇总

x33g5p2x  于2021-03-14 发布在 Mysql  
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主库show master status没结果

主库binlog功能开关没改或没生效

[root@curder.centos5 /data/3308/data]
# egrep "server-id|log-bin" /data/3307/my.cnf 
log-bin=mysql-bin
server-id = 3307
mysql> show variables like "server_id";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id     | 3307  |
+---------------+-------+
1 row in set (0.00 sec)
mysql> show variables like "log_bin";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin       | ON    |
+---------------+-------+
1 row in set (0.00 sec)
提示:配置文件里的参数和show variables中的参数不一致,例如my.cnf里log-bin在show variables的时候看到的是log_bin

change master to 时多了空格错误

change master to 
master_host="192.168.0.15",
master_port=3307,
master_user='rep',
master_password='reppasswd',
master_log_file=' mysql-bin.000005 ',
master_log_pos=344;
 Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'

MySQL在多实例的情况下启动故障

find /data/3307/ -type f -name 'mysqld.pid'|xargs rm

由于切换binlog日志导致show master status位置变化对主从无影响

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