How to Backup MySQL Databases
MySQL is an open-source relational database management system and has grown to be one of the most popular database systems online. MySQL is implemented in a variety of solutions, including WordPress and Joomla, as well as high-profile websites, such as Facebook and Twitter. MySQL offers a variety of helpful tools to the user, though there are risks to tying so much information into a relational database. For example, there are several applications that rely on the database to function, becoming useless without the data within MySQL to function. The importance of these systems is why backing up the MySQL database is essential.
To get started with MySQL databases backup, you will need to have a MySQL database running as well as access to the MySQL root username and password. Additionally, you should assess how many databases there are that need to be backed up. There are command line functions available for a single database, multiple databases, or every MySQL database.
Backing Up MySQL Databases
The first step to backing up the database is to get access to the MySQL root username and password, as mentioned before.
Once you have that access, the next step is determining how many databases need to be backed up.
If you are backing up one database, you can use the following command:
mysqldump -u root -p database_name > database.sql
If you are backing up multiple databases, the followed command should be used:
mysqldump -u root -p --databases database_one database_two > both_databases.sql
There are instances where you may want to backup every MySQL database. When that’s the case, the following command can be used:
mysqldump -u root -p --all-databases > all_databases.sql
You may find that the backups of the database are larger than expected. If this is the case, or you need to save on storage space, you can backup and compress a database using the following command:
mysqldump -u root -p database_name | gzip -9 > backup_db.sql.gz
Congratulations, you’ve successfully completed a backup of your MySQL databases using the command line. It’s important to implement these types of backups frequently, ensuring that any crucial operation data is saved and secured, just in case there’s a data breach, data is compromised, or there’s an issue with the database. If you found this guide helpful, please share it with others engaged in the same process.