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恢复slave从机上的部分表

分类: 文章 • 2022-04-16 18:15:30

恢复slave从机上的部分表

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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  1. mysql> stop slave;
  2. 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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  1. mysql> start slave until master_log_file='mysql-bin.000003', MASTER_LOG_POS=3407;
  2. 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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  1. mysql> source /mysql/dump/test_01_test_02.sql
  2. Query OK, 0 rows affected (0.00 sec)

  4. Query OK, 0 rows affected (0.00 sec)

  6. Query OK, 0 rows affected (0.00 sec)

  8. Query OK, 0 rows affected (0.00 sec)

  10. Query OK, 0 rows affected (0.00 sec)

  12. Query OK, 0 rows affected (0.00 sec)

  14. Query OK, 0 rows affected (0.00 sec)

  16. Query OK, 0 rows affected (0.00 sec)

  18. Query OK, 0 rows affected (0.00 sec)

  20. Query OK, 0 rows affected (0.00 sec)

  22. Query OK, 0 rows affected (0.04 sec)

  24. Query OK, 0 rows affected (0.00 sec)

  26. Query OK, 0 rows affected (0.00 sec)

  28. Query OK, 0 rows affected (0.04 sec)

  30. Query OK, 0 rows affected (0.00 sec)

  32. Query OK, 0 rows affected (0.00 sec)

  34. Query OK, 0 rows affected (0.00 sec)

  36. Query OK, 6 rows affected (0.01 sec)
  37. Records: 6 Duplicates: 0 Warnings: 0

  39. Query OK, 0 rows affected (0.01 sec)

  41. Query OK, 0 rows affected (0.00 sec)

  43. Query OK, 0 rows affected (0.06 sec)

  45. Query OK, 0 rows affected (0.00 sec)

  47. Query OK, 0 rows affected (0.00 sec)

  49. Query OK, 0 rows affected (0.07 sec)

  51. Query OK, 0 rows affected (0.00 sec)

  53. Query OK, 0 rows affected (0.00 sec)

  55. Query OK, 0 rows affected (0.00 sec)

  57. Query OK, 6 rows affected (0.01 sec)
  58. Records: 6 Duplicates: 0 Warnings: 0

  60. Query OK, 0 rows affected (0.00 sec)

  62. Query OK, 0 rows affected (0.00 sec)

  64. Query OK, 0 rows affected (0.00 sec)

  66. Query OK, 0 rows affected (0.00 sec)

  68. Query OK, 0 rows affected (0.00 sec)

  70. Query OK, 0 rows affected (0.00 sec)

  72. Query OK, 0 rows affected (0.00 sec)

  74. Query OK, 0 rows affected (0.00 sec)

  76. Query OK, 0 rows affected (0.00 sec)

  78. 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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  1. mysql> start slave;
  2. Query OK, 0 rows affected (0.01 sec)



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