Shulou(Shulou.com)06/01 Report--

0. Prepare for

a. Install database: master and slave mysql databases (mysql server) are all installed:

On version, mysql allows lower version master with higher version slave

Https://dev.mysql.com/doc/refman/5.7/en/replication-compatibility.html

Of course, the same version is the best.

b. Table synchronization and data synchronization: in the slave database (slave), data synchronization and structural synchronization are performed on the tables of the master database (master) (if only specific tables are replicated from master and slave, only specific tables are synchronized, which will be configured later)

Data synchronization and structural synchronization can be easily done with a tool such as navicat.

1. Configure master-slave mode:

You can refer to the article of this great god:

BLOG of itwork

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two。 A few small details:

How to find the configuration file:

Windows: take 5.7as an example, the configuration file location is: ProgramData\ MySQL\ MySQL Server 5.7\ my.ini

Ubuntu: vi / etc/mysql/my.cnf

How to restart mysql:

Ubuntu: / etc/init.d/mysql restart

Windows: you can find mysql from the Task Manager service, or use cmd: "net stop mysql57"net start mysql57"

If you synchronize only a few table:

In the slave database configuration, using the replicate-do-table configuration, there are several table writes:

Replicate-do-table=db_name.table_name

Replicate-do-table=db_name.table_name

Remember to restart mysql after modification

Please note: db_name and table_name are both db and table names local to the slave database, do not use the name master!

I haven't found a mistake for a long time. The two sides have been connected, but the modification monitoring of the table has been dropped by filter. )

If the name of the master database is different from that of slave:

For example, master is called db123 and slave is called db456.

In the slave database configuration, use the replicate-rewrite-db configuration:

Replicate-rewrite-db=db123- > db456

Just do a simple name rewriting.

Remember to restart mysql after modification.

If you are a VMWare virtual machine as a slave:

Edit another configuration file for slave

Vi / etc/mysql/mysql.conf.d/mysqld.cnf

Comment out the line "bind-address = 127.0.0.1"

How to debug:

a. Check more server Logs (if you are using mysql workbench, click management and find server Logs under the "instance" column), it will prompt a lot of warning and errors, and search for answers based on errors.

B. Mysql official teaching, step by step, some commonly used instructions can find the problem:

Https://dev.mysql.com/doc/refman/5.7/en/replication-problems.html

3. Reference:

This is the configuration item manual for the mysql configuration file:

Https://dev.mysql.com/doc/refman/5.7/en/replication-options-slave.html

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