Modify my.cnf
vim /data/3306/my.cnf
[mysqld]
log-bin= /data/3306/log-bin
server-id= 6
vim /data/3307/my.cnf
[mysqld]
server-id= 7
- Main library must be open binlog, if not cascade copy from the library may not open, but server-id must be unique
to restart the database
/data/3306/mysql stop
/data/3306/mysql start
/data/3307/mysql stop
/data/3307/mysql start
Check the database configuration
mysql -S /data/3306/mysql.sock
mysql> show variables like 'server_id';
mysql> show variables like 'log_bin';
Establish an account rep for synchronization in the main library
mysql>grant replication slave on *.* to rep@'10.0.0.%' identified by '111111';
mysql> flush privileges;
| parameter | Explanation |
|---|---|
| replication slave | Master-slave synchronization user must privileges, no privileges to other |
| *.* | It means all tables, or you can specify a table in a library, for example: user under the table mysql.user, mysql database |
| [email protected].% | is an account rep, 10.0.0.% as an authorized host network segment, use% represents the entire 10.0.0.0 network to allow users to access rep |
| identified by | set password |
- Checking account established
mysql> select user,host from mysql.user;
- View user permissions
mysql>show grants for rep@'10.0.0.%';
The master lock database table
mysql>flush table with read lock;
Different engines, lock the table will be controlled by the following parameters, if the operation time does not exceeds the set will automatically unlock the lock table
lock control parameter table, unit: seconds, more than this time will automatically unlock
After the lock table view of the main library binlog status
- Check the lock table emperor library binlog information
mysql>show master status;
Export Master Data Library
After the lock table must use connectivity tools to open a new window to export data, if the data is greater than 50G, and allows the shutdown, the library can be parked directly packed data file migration, that would be quicker
mysqldump -uroot -S /data/3306/mysql.sock --events -A -B |gzip >/data/mysql_bak.$(date +%F).sql.gz
ll /data/
- To ensure that no data is written during data export, see binlog again
mysql>show master status;
Before the need to maintain export data, consistent with the binlog
- After exporting the database can unlock the main library
msyql>unlock tables;
The main import from the library to the library data
- In the main library from the library extracting backup file
gzip -d mysql_bak.2018-12-29.sql.gz
mysql -uroot -S /data/3307/mysql.sock < /data/mysql_bak.2018-12-29.sql
If the parameters -A backup, restore the data in 3307 to the login password 3307 and 3306 will be the same, because the authorization table 3307 is also covered
Log from the library, copy the configuration parameters
change master to MASTER_HOST='10.0.0.200',MASTER_USER='rep',MASTER_PASSWORD='111111',MASTER_LOG_FILE='mysql-bin.000002',MASTER_LOG_POS=324;
| parameter | Explanation |
|---|---|
| MASTER_HOST | Main library ip |
| MASTER_PORT | Main library port number |
| MASTER_USER | User for copying |
| MASTER_PASSWORD | User password |
| MASTER_LOG_FILE | It is to look at the main library show master status binlog file name, not by spaces |
| MASTER_LOG_POS | In the main gallery show master status binlog offset, no spaces |
- Validation checks
cat /data/3307/data/master.info
Open copy
mysql>start slave;
mysql>show slave status;
Verification result is copied from the master
-
Main library
-
From the library
-
In the main library to create a new database
mysql>create database master;
mysql>show databases;
- View from the library
mysql>show databases;
other
Open the master binary log records all the default action of all database tables, only the recording operation can be specified even the specified database table specified by the configuration, particularly the following may be added to modify options [mysqld] mysql profile
-
What libraries are not synchronized
binlog-the ignore-db = MySQL
binlog-the ignore-db = the Test
binlog-the ignore-db = information_schema -
Which only database synchronization, in addition to not sync
binlog-do-db = master