恢复slave从机上的部分表

发布时间：2020-08-14 17:40:14 作者：StevenBeijing
来源：ITPUB博客阅读：124

以下案例演示重新初始化slave上的个别表，如test01和test02.
1、停止slave复制

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mysql> stop slave;
Query OK, 0 rows affected (0.02 sec)

2、在master导出这张表，并记录下同步的binlog和POS点
mysqldump -uroot -pmysql -q --single --master-data=2 test test01 test02 > test_01_test_02.sql
3、查看test_01_test_02.sql文件，找到记录的binlog和POS点
MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=3407;
4、把test_01_test_02.sql复制到slave上，并做change master指向

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mysql> start slave until master_log_file='mysql-bin.000003', MASTER_LOG_POS=3407;
Query OK, 0 rows affected, 1 warning (0.01 sec)

直到sql_thread线程为NO，这期间的同步报错一律跳过即可，可用如下命令跳过：
stop slave;
set global sql_slave_skip_counter=1;
start slave;
5、在slave上导入

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mysql> source /mysql/dump/test_01_test_02.sql
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.04 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.04 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 6 rows affected (0.01 sec)
Records: 6 Duplicates: 0 Warnings: 0
Query OK, 0 rows affected (0.01 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.06 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.07 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 6 rows affected (0.01 sec)
Records: 6 Duplicates: 0 Warnings: 0
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)

6、导入完毕之后，开启同步即可。

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mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

恢复slave从机上的部分表

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