![]() ![]() Mysql> grant all privileges on *.* to identified by 'passw0d' Mysql> grant all privileges on *.* to identified by 'passw0rd' mysql> create user identified by 'passw0rd' I am create user “slave” for DB replication into master and slave server. Step #06: New user needed for database replication. You can turn off this feature to get a quicker startup with -A Reading table information for completion of table and column names Mysql> create table master_table2 (c int) Mysql> create table master_table1 (c int) Step #05: Create table into my created databases. Goto mysql -u root -p for create database. Step #04: Create two databases previously inserted my.cnf file. Then restart you mysql server :~# /etc/init.d/mysql restart Step #03: Insert my all databases name and server id into my.cnf file under section. :~# vi /etc/mysql/my.cnfĬomment out two lines into my.cnf file or find /etc/mysql/my.cnf.d/nf file. Master Server IP address 10.66.20.1 Step #02: Open my.cnf file any editor. Step #01: Collect your master server IP address and created master server id use any id. Mysql-Slave ip : 10.66.20.2 Master Mysql Server configuration. Now I will have to show mysql master slave replication on your ubuntu 14.04 server. However, it’s essential to adhere to best practices and avoid writing to both masters to ensure data consistency and integrity in your MySQL replication setup.★ How To Install mysql Community on Windows 10 ★ How To Install Laravel On Ubuntu 16.04 With Phpmyadmin and MysqlĪt first install mysql server on ubuntu 14.04. To send data from server to server, authentication is not required. So second step enable ssh without password authentication. ![]() In conclusion, understanding and correctly configuring auto_increment_increment and auto_increment_offset are crucial for maintaining data consistency and integrity in a MySQL Master-Master Replication setup, and can greatly improve the performance and reliability of your database replication architecture. – It’s advisable to have these configured to avoid any accidental conflicts for all master-master setup. ![]() – auto_increment_offset determines the starting point for the AUTO_INCREMENT column value. – auto_increment_increment controls the interval between successive column values. MySQL Server2 (Stand-by / Secondary Master): SET GLOBAL auto_increment_increment=2 MySQL Server1 (Primary / Master): SET GLOBAL auto_increment_increment=2 ![]() Persist the change in MySQL configuration file (my.cnf).Configure auto_increment_increment and auto_increment_offset as follows on Primary and Stand-by Master.Both configuration options are dynamic and will not need MySQL restart. The solution is to use the variables auto_increment_increment and auto_increment_offset as explained below. auto_increment variables and master-master replication The obvious problem of maintaining auto increments in sync will persist on both MySQL servers as AUTO_INCREMENT’s value. You should see an error: Error 'Duplicate entry '1' for key 'PRIMARY'' on query. Now insert one row from MySQL Server2 as follows: mysql>insert into temp values(null) On MySQL Server2 in replication you will see single row inserted. Now insert value on MySQL Server1 as follows: mysql>insert into temp values(null) The table will will get replicated on MySQL Server2 in the master-master setup. ) ENGINE=MyISAM AUTO_INCREMENT=12 DEFAULT CHARSET=latin1 Now create following table on Server1: `id` int(10) NOT NULL auto_increment, In this post we will see importance of replication related variables auto_increment_increment & auto_increment_offset with respect to MySQL Master Master setup.Ĭonsider we’ve already set a master-master replication. ![]()
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