MySQL-主从同步架构中你不知道的坑下

上一篇：MySQL 主从同步架构中你不知道的“坑”（上）

此篇算是接上一篇文章的后续介绍，介绍下在指定同步库的情况一些所遇到的“坑”

指定同步库情况

1、binlog_format= ROW 模式‍

mysql> use testdb;
Database changed
mysql> show tables;
+------------------+
| Tables_in_testdb |
+------------------+
| test01      |
| test1      |
+------------------+

3 rows in set (0.00 sec)


mysql> insert into test1 values('zhng','man');
Query OK, 1 row affected (0.05 sec)
mysql> insert into test1 values('meimei','woman');
Query OK, 1 row affected (0.04 sec)

mysql> select * from test1;
+--------+-------+
| id  | name  |
+--------+-------+
| zhang | man  |
| zhng | man   |
| meimei | woman |
+--------+-------+
3 rows in set (0.00 sec)

从库查看

mysql> use testdb;
Database changed
mysql> show tables;
+------------------+
| Tables_in_testdb |
+------------------+
| test01      |
| test1      |
+------------------+
2 rows in set (0.01 sec)
 

mysql> select * from test1;
+--------+-------+
| id  | name  |
+--------+-------+
| zhang | man  |
| zhng | man  |
| meimei | woman |
+--------+-------+
3 rows in set (0.01 sec)

2、binlog_format= STATEMENT 模式‍

主库配置如下

binlog-do-db = testdb

从库配置如下

replicate-wild-do-table = testdb.%

主库操作

mysql> create database testdb;
Query OK, 1 row affected (0.01 sec)

mysql> use testdb;
Database changed
mysql> create table test01 (-> id varchar(10) not null,
    -> name varchar(10) not null
    -> );
Query OK, 0 rows affected (0.04 sec)
 

mysql> insert into test01 values('zhang','man');
Query OK, 1 row affected (0.01 sec)

mysql> select * from testdb.test01;
+-------+------+
| id  | name |
+-------+------+
| zhang | man  |
+-------+------+
1 row in set (0.00 sec)

从库查看

mysql> use testdb;
Database changed

mysql> select * from test01;
+-------+------+
| id  | name |
+-------+------+
| zhang | man  |
+-------+------+
1 row in set (0.00 sec)

测试在不指定忽略库的情况下默认库是否会同步数据

mysql> create user testdb_user;
Query OK, 0 rows affected (0.03 sec)
 

mysql> select user from mysql.user;
+-------------+
| user    |
+-------------+
| testdb_user |
| mysql.sys |
| root    |
+-------------+

[root@mysql-s ~]# mysql -uroot -p -e "select user from mysql.user;"
Enter password: 
+-----------+
| user   |
+-----------+
| mysql.sys |
| root   |
+-----------+

注：默认的库的数据没有被同步

点击 –> 民工哥技术之路 关注微信公众号，对话框回复关键字：1024 可以获取一份最新整理的 2048G 技术干货：包括系统运维、数据库、redis、MogoDB、电子书、Java 基础课程、Java 实战项目、架构师综合教程、架构师实战项目、大数据、Docker 容器、ELK Stack、机器学习、BAT 面试精讲视频等。