Phpmyadmin replication tutorial8/5/2023 ![]() ![]() So I’d like to share some of my advice and how to install mysqnd_ms on centos 7. We will cover this in an upcoming article.I needed to run a complicated report wich lead me on the path toward master/slave replication with mysqlnd_ms on our production server. This process works seamlessly on the new system setup, but you need to make additional configuration changes if you want to replicate an existing database. Now, check this on the slave by executing the following command.Ĭonclusion In this tutorial, you learned how to configure MySQL master-slave replication in CentOS 7. To validate this, we are going to create a test database on the Master Node. Slave_IO_State: Waiting for master to send event To configure the slave to communicate with the master for replication, configure the slave with the necessary connection information as follows: Once you made the changes, restart the MySQL service for changes to take effect. 2) How to Configure the Slave Server for MySQL Master/Slave ReplicationĪdd the necessary changes to the slave like the master, but the values must be changed accordingly. Now you have successfully configured the Master server. These details are required in the slave configuration. Run the command below to determine the current binary log file name and their position. Mysql> GRANT REPLICATION SLAVE ON *.* TO OK, 0 rows affected (0.00 sec)įlush the privileges for changes take effect. Mysql> CREATE USER IDENTIFIED BY 'your_password' Make sure you have given the user a strong password. For demonstration purposes, we have added a username called “replica_user” and you can change it according to your needs. Run the commands below to create a user and grant the replication slave privilege. ![]() This user will be used by Slave Server to request binary logs from the master. Next, log in to MySQL and create a replica user. Once you make changes, restart the MySQL service for the changes to take effect. Make a note: The server ID must be a unique number and it will not be used again. Also, change the “loopback” address to match the IP address of the Master node. To do so, edit the “my.cnf” or “my.ini” file and configure the binary log and server ID options. # firewall-cmd -add-service=mysql -permanentġ) How to Configure the Master Server for MySQL Master/Slave Replication The same procedure works for other distributions. In this tutorial, we will explain how to configure a MySQL Master/Slave replication with one master and one slave server on CentOS 7. You can replicate all databases, selected databases, or even selected tables within a database based on your needs. ![]() The original type of synchronization is one-way, asynchronous replication, in which one server acts as the master, while one or more other servers act as slaves. Replication in MySQL supports different types of synchronization. When using GTIDs, each transaction can be identified and tracked as it is committed on the originating server and applied by any slaves. The newer method based on global transaction identifiers (GTIDs), which does not relay on the log file. The traditional method is based on replicating events from the master’s binary log, and the log files and positions in them must be synchronized between master and slave. ![]() Replication with Global Transaction Identifiers (GTIDs).Binary Log File Position Based Replication Configuration.The master-slave replication can be made using the following two methods: MySQL supports various replication methods, but Master-Slave is the best of them. MySQL master-slave replication is a process that automatically copies data from one MySQL database server (master) to one or more MySQL database servers (slaves). ![]()
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