When mysqlbackup performs a compressed backup for a server that has binary logging enabled, it transforms each binary log file and relay log file (for a replica server in a replication setting) to a Show
See Also , , , , , . backupThe process of copying some or all table data and metadata from a MySQL instance, for safekeeping. Can also refer to the set of copied files. This is a crucial task for DBAs. The reverse of this process is the restore operation. With MySQL, physical backups are performed by the MySQL Enterprise Backup product, and logical backups are performed by the Backups are further classified as hot, warm, or cold depending on how much they interfere with normal database operation. (Hot backups have the least interference, cold backups the most.) See Also , , , , , . backup directoryThe directory under which the backup data and metadata are stored, permanently or temporarily. It is used in most kinds of backup and restore operations, including single-file backups and restores. See the description of the option on how the backup directory is used for different purposes and for different operations. backup repositoryContrast with server repository. See Also , . backup-my.cnfA small configuration file generated by MySQL Enterprise Backup, containing a minimal set of configuration parameters. This file records the settings that apply to this backup data. Subsequent operations, such as the apply process, read options from this file to determine how the backup data is structured. This file always has the extension See Also , . BarracudaThe code name for an InnoDB file format that supports compression for table data. It supports the compressed row format that enables InnoDB table compression, and the dynamic row format that improves the storage layout for BLOB and large text columns. See Also , , , , . binary logA file containing a record of all statements that attempt to change table data. These statements can be replayed to bring replica servers up to date in a replication scenario, or to bring a database up to date after restoring table data from a backup. The binary logging feature can be turned on and off, although Oracle recommends always enabling it if you use replication or perform backups. You can examine the contents of the binary log, or replay those statements during replication or recovery, by using the mysqlbinlog command. For full information about the binary log, see The Binary Log. For MySQL configuration options related to the binary log, see Binary Logging Options and Variables. For the MySQL Enterprise Backup product, the file name of the binary log and the current position within the file are important details. To record this information for the source server when taking a backup in a replication context, you can specify the The binary log, if enabled on the server, is backed up by default. See Also , , . binlogAn informal name for the binary log file. For example, you might see this abbreviation used in e-mail messages or forum discussions. In this blog, we compare two of the most popular types of backups in MySQL - backups of a physical and logical nature. Curious what they are and how they work? You've come to the right place. Everyone who has ever backed up data using any kind of RDBMS knows a thing or two about backups. Backups are a central part of data integrity – especially nowadays, when data breaches are happening left and right. Properly tested backups are crucial to any company: once something happens to our data, they help us quickly get back on track. However, some of you may have heard about the differences between backups in database management systems – backups are also classified into a couple of forms unique to themselves. We’re talking about the physical and logical forms – these have their own advantages and downsides: let’s explore those and the differences between the two. This tutorial is geared towards MySQL, but we will also provide some advice that is not exclusive to MySQL. What are Logical Backups?Logical backups are backups of data consisting of statements that let the database recreate the data. Think of how you usually take backups within MySQL – no matter if you find yourself using the Export functionality within phpMyAdmin or using Sometimes though, developers might find themselves in waters where recreation of files is required. What are Physical Backups?Physical backups, as you might’ve guessed, copy the “physical” data – files – that comprise a database. As far as MySQL is concerned, the physical backup of MySQL usually consists of a copy of the data directory found here (Windows-based example – in Linux, the directory would be /var/lib/mysql/mysql5.7.36/data): Logical Backups in MySQLTaking logical backups within MySQL is easier than you might’ve guessed – think of any part of MySQL that backs up statements to recreate data. Got one? You’ve got yourself a logical backup! In MySQL, logical backups are taken by:
phpMyAdminContrary to popular belief, the export functionality within phpMyAdmin can offer quite a lot of options to choose from. Users have a variety of options to choose from, including, but not limited to:
Some of the abilities of phpMyAdmin can be seen below: Since phpMyAdmin is one of the most widely used tools within MySQL, it’s logical (see what we did there?) that it offers a lot of options for both junior developers and experienced DBAs alike (see example above.) phpMyAdmin isn’t anything fancy and it’s been here for decades – yet, its slick UI and rich feature set make it stand out from the crowd. mysqldumpThe next tool in the toolset of a MySQL DBA is, of course,
In order to use If you’re security minded, keep in mind that you can also prevent yourself from providing a username ( For many people, phpMyAdmin and There’s nothing “wrong” with
Complete these steps. Now complete them again and repeat everything for additional 499,998 iterations. Does that sound quick? Sure, if we lock the tables, we might avoid the steps #3 and #8, but our queries will be slow nonetheless – there are a lot of things MySQL has to consider when running SELECT INTO OUTFILE & LOAD DATA INFILEAn alternative to
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However, while these three options comprise logical backups – the most frequently used form of backups in MySQL – and the process of taking them is quick, easy and straightforward, keep in mind that there’s also another way to accomplish your goals – people can also take backups in a physical form. Such backups copy files containing the data instead of recreating statements that build the data. Physical Backups in MySQLPhysical backups offer the ability to copy files (physical data) instead of the statements that recreate it. To take a physical backup in MySQL:
If, for some reason, you find yourself using MyISAM (which is obsolete at the time of writing), taking physical backups of it is even easier – you just need to copy the data folder containing your databases, their data (.MYD files) and associated indexes (.MYI files.) Physical backups can be useful when there’s a necessity to restore everything from a database from some media storage in one go, however, some might call the process of taking them a little tedious. To each their own though. RecapPhysical backups copy the files that the data is based upon – to take a copy of them when using InnoDB, take a copy of the InnoDB tablespace (ibdata1) and the undo & redo logs (ib_logfile0 & ib_logfile1), then the data folder. To back up MyISAM, take a copy of all of the data and index files (.MYD and .MYI files) in the data folder. SummaryMySQL offers everyone a couple of ways to back up data – while the most common option are logical backups that back up statements that recreate the data, indexes, partitions, and all related details, some might make use of physical backups where users copy the data files themselves: each option has its own upsides and downsides, so make sure to try both options out before your plan out your backup strategy. Familiarize yourself with all of the options, then make your own, physical or logical, decision. We hope that this blog has been informational and that you’ve learned something new, and until next time! Lukas Vileikis 03 December 2022 Lukas Vileikis 03 December 2022Backing Up MySQL Part 7: MySQL Enterprise Backup 1 How to take physical backup in MySQL?Backup the Database. Stop the MySQL service. $ sudo systemctl stop mysql.. Create a directory to store the MySQL file backup. Create a parent directory and sub-directories with the current date. ... . Copy the database file with cp . $ sudo cp -R /var/lib/mysql/. / ... . Start the database server. $ sudo systemctl start mysql.. What are the different types of backup MySQL?There are two backup types: physical and logical. Physical (Percona XtraBackup, RDS/LVM Snapshots, MySQL Enterprise Backup), and also you can use cp or rsync command lines to copy the datadir as long as mysql is down/stopped.
How to take physical backup in MariaDB?Create a Backup. If you are not running in recovery mode (a Finnix session), stop the mysql service: systemctl stop mysql.. Locate your database directory. ... . Create a directory to store your backups. ... . Copy MySQL's data directory to a storage location. ... . Restart the MySQL service: systemctl restart mysql.. How to take incremental backup in MySQL community edition?How to Set Up MySQL Incremental Backups?. Install MySQL Server 8. Install the MySQL database server version 8 by running the following command - apt-get install mysql-server -y. ... . Enable Binary Logging. ... . Create a Database and Table. ... . Take a Full MySQL MySQL Backup. ... . Take an Incremental MySQL Backup. ... . Delete a MySQL Database.. |