–allow-keywords Allows the creation of keywords as column names. F (–flush-logs) Synchronizes the log files of the MySQL server to the hard disk before the backup process is started. A (–all-databases) Includes all databases and tables. On the “MASTER” Server you create the Backup with the following command: mysqldump -A -allow-keywords -single-transaction -F -master-data=2 -r /root/mysqldump.sql -user=root -p The following entries must be checked / modified / accom- modated: server-id = 2 # Must have an higher score than MASTER.Īgain, you can active log files if you need to: general_log_file = /var/log/mysql/mysql.log Now we edit the configuration of the slave server: nano /etc/mysql//mysqld.cnf Remember the File & Position for the configuration of the SLAVE server! | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | – You can check the logfile later with the command: tail -f /var/log/mysql/mysql.logĪfter changing the configuration, we reload the configuration of the MySQL server, open the MySQL command line and look at the status of the “MASTER” server. The following entries must be checked / modified / accom- modated: bind-address = 10.0.0.1įor control purposes, you can activate logging – but this is not recommended permanently, since the option is a performance killer! general_log_file = /var/log/mysql/mysql.log Next, we make changes to the configuration of the “MASTER” server: nano /etc/mysql//mysqld.cnf The “REPLICATION CLIENT” permission allows the use of “SHOW MASTER STATUS” and “SHOW SLAVE STATUS”įor more information on the commands and options used, please refer to the following MySQL documentation: Without this authorization, the slave can not request updates that were made on the databases on the master server. With this it is able to connect to the master server and start the replication. The authorization „REPLICATION SLAVE“ is for the account on the slave server.
Mysqldump tutorial password#
Password = Please change this to a secure password Replication = the account that will be used for replication Open the MySQL command line and create a replication account: mysql –u root –p GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO IDENTIFIED BY ‘password’
Mysqldump tutorial install#
Installation and start of MySQL-servers for server1 und server2: apt-get -y install mysql-server (Disaster recovery strategy) Network Configurationīecause we need an internal network for database replication, I would like to briefly refer to the following tutorial how you set up an internal network at gridscale.io.Įxample configuration of IP addresses: Server 1 (MASTER): 10.0.0.1 The data of one MySQL server can be replicated to another remote server in another datacenter. Replication can be used to run regular backups on the slave server, so you do not affect the capacity of the master server by the backup process. In many web applications a database is read by more than is written, one can divide the incoming load with a replication on several servers. Remember: Replication is not a backup! If you delete a database on the master, it will be deleted on the slave as well! case studies Load distribution of reading queries It should be configured ONLY in private networks and under no circumstances in public networks (on the Internet)! The guide describes an unencrypted replication. Replication is asynchronous! The slave server lags behind the master server, depending on the load, and data loss may occur.
Mysqldump tutorial how to#
In the following article, I will show you how to install a MySQL database on an Ubuntu 16.04 server and set up a replication from a master to the slave.