Difference between revisions of "MySQL/Backup and restore databases"
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|Databases||MySQL||Backup and restore databases|
This page/section is under construction
Although a SQL database server is typically quite stable in day-to-day operation and not prone to random data loss, it usually manages information carefully gathered over a longer period of time, data which users wish to safeguard from damage and prevent from being compromised in any way. One of the most effective forms of protection against these and other adverse eventualities is having a backup of your database data. There are several ways to make such backups. This page will focus on MySQL server backups, with any deviations for MariaDB mentioned separately.
Files from a MySQL server cannot simply be copied like normal computer files. The combination of files and contents makes it necessary to retrieve the data via specialized tools such as:
2 Connecting to the database server
You can use the same database user
kodi which was initially set up with the Kodi video and music libraries. By default, the user
kodi was granted full access to the database server to make the creation of new Kodi databases seamless during upgrades.
If you want to create Kodi databases on a new MySQL/MariaDB server, make sure you create the user 'kodi' first, and grant the user full credentials as per Kodi instructions.
3 GUI applications
PHPMyAdmin is a web interface that runs on an Apache web server and PHP instance that connects directly to your database server by way of your web browser, locally or outside your own network. It can be installed on Windows, Linux and Mac OS computers, as well as most NAS devices.
Open the PHPMyAdmin application and log in with a user with full credentials. The
kodi user should have those credentials.
- Click on the Export tab, then select Custom - display all possible options, making sure to have the correct database(s) selected.
- Create your output filename in case you do not want to use the auto-generated default.
- Object creation:
- Include the DROP DATABASE IF EXISTS and
- DROP TABLE / VIEW / PROCEDURE / FUNCTION / EVENT / TRIGGER statements
To begin the backup, click the Go button in the bottom left corner. A download link of the export file will be presented to you when the process has completed.
3.2 MySQL Workbench
MySQL Workbench is a standalone database maintenance application which is available for Windows, Linux and macOS.
- From the main menu, select Server, then the submenu item Export data….
- Administration – Data Export:
- Tables to export: Select the schema(s) or database(s) you want to export, their respective data tables will be selected automatically.
- Export options:
- Select Export to Self-Contained File, and browse/create to the preferred folder and file name.
- Include Create Dump in a Single Transaction as well as Include Create Schema.
Finally, press the Start Export button in the bottom right corner to start the database export. Exit the application if no errors were found.
3.3 HeidiSQL (MariaDB)
HeidiSQL is an overall database server tool, able to handle multiple types of database servers, but was primarily intended for MariaDB. It is available for a Windows OS only.
4 Command-line interface
MySQLdump script for Windows OSes MySQLdump script for Windows OSes using MySQLdump is possible, and the tool is typically provided along with the mysql/mariadb-server installation. This is a script that can be used either manually or be hung into a time-repetitive scheduler. Log files are created with filenames that have a timestamp built-in, so older backups will not be overwritten. Copy the script below into your favorite text-editor and save it as a .bat (batch) file into the location+filename of your choosing. You can export database contents for the Kodi video library, music library, and the database user for the Kodi application.
cls @echo off echo " " echo "MYSQLDUMP databases Kodi v19+ video & music" echo "-------------------------------------------" REM UNTESTED SCRIPT !! REM TO BE TESTED ON WINDOWS 11 Pro with MYSQL SERVER 5.7.36 ON UBUNTU SERVER 18.04 REM SET FORMATTED TIMESTAMP SET A/ timestamp=%date:~0,2%_%time:~0,2%_%time:~3,2%_%time:~6,2% REM EXPORT PATH, ADJUST TO YOUR OWN CONVENIENCE SET A/ path="/home/user/Dropbox/MySQL/kodidtbs_v19_""%timestamp%""_" REM FILENAMES SET A/ video_export=%path% + "video.sql" SET A/ music_export=%path% + "music.sql" SET A/ user_export =%path% + "user.sql" REM USER PARAMETERS TO EDIT ACCORDING TO YOUR DATABASE SERVER, CREDENTIALS AND PORT SITUATION SET A/ user=" --user=kodi --password=kodi" SET A/ srvr=" --host=srvr1 " SET A/ port=" --port=3306 " REM FIXED PARAMETERS FOR KODI DATABASES SET A/ params=" --add-drop-database --add-drop-table --add-drop-trigger --routines --triggers " REM VARIABLE PARAMETERS FOR KODI DATABASES SET A/ video=" --databases MyVideos119 " SET A/ music=" --databases MyMusic82 " REM --------------------------------------------------------------------------------------- REM CHECK IF USER-GIVEN ARGUMENTS ARE PRESENT for %%x in (%*) do ( REM CHECK FOR VIDEO if (%%x == "v") OR (%%x == "video") echo "Exporting video to : %video_export%"; mysqldump %user% %srvr% %params% %video% > %video_export% if (%%x == "m") OR (%%x == "music") echo "Exporting music to : %music_export%"; mysqldump %user% %srvr% %params% %music% > %music_export% if (%%x == "u") OR (%%x == "user") echo "Exporting user to : "%$user_export%; mysqldump %user% %srvr% %params% --where="User='kodi'" > %user_export% ) if (%%x ='') echo "EXAMPLE: dtbs-export.bat video "; echo " "; echo "Possible user parameters:"; echo " v or video"; echo " m or music"; echo " u or user"; echo " all"; echo " "; echo "Note: for importing full Kodi database exports, you need SQL database root user access"; echo ""; echo "For a complete guide, type: 'mysqldump --help' or 'man mysqldump' "; echo " "; fi REM EXIT
MySQLdump script for Linux OSes
Using MySQLdump in Linux is also possible, and is typically provided along with the mysql/mariadb-server installation. This is a script that can be used either manually or be hung into time-repetitive cron jobs. Log files are created with filenames that have a timestamp built-in, so older backups will not be overwritten.
Copy the script below into your favorite text-editor and save it as a .sh (bash) file into the location+filename of your chosing, and make the file executable with
chmod +x yourfilename.sh. You can export database contents for the Kodi video library, music library, and the database user for the Kodi application. You can do so separately or combined with all three parameters at the same time.
#!/usr/bin/env bash #set -x # enable in case of trouble echo ' ' echo 'MYSQLDUMP databases Kodi v19+ video & music' echo '-------------------------------------------' # TESTED ON UBUNTU DESKTOP 21.10 with MYSQL SERVER 5.7.36 ON UBUNTU SERVER 18.04 timestamp=$(date +"%Y%m%d_%H%M"); # EXPORT PATH, ADJUST TO YOUR OWN CONVENIENCE path="/home/user/Dropbox/MySQL/kodidtbs_v19_""$timestamp""_" # FILENAMES video_export="$path""video.sql" music_export="$path""music.sql" user_export="$path""user.sql" # USER PARAMETERS TO EDIT ACCORDING TO YOUR DATABASE SERVER, CREDENTIALS AND PORT SITUATION user=" --user=kodi --password=kodi" srvr=" --host=srvr1 " port=" --port=3306 " # FIXED PARAMETERS FOR KODI DATABASES params=" --add-drop-database --add-drop-table --add-drop-trigger --routines --triggers " # VARIABLE PARAMETERS FOR KODI DATABASES video=" --databases MyVideos119 " music=" --databases MyMusic82 " # --------------------------------------------------------------------------------------- # CHECK IF USER-GIVEN PARAMETERS ARE PRESENT if [ $# -gt 0 ]; then echo ' '; # LOOP THROUGH PARAMETERS GIVEN while test $# -gt 0 do case "$1" in v|video|all) echo "Exporting video to : ""$video_export"; mysqldump $user $srvr $params $video > $video_export ;; m|music|all) echo "Exporting music to : ""$music_export"; mysqldump $user $srvr $params $music > $music_export ;; u|user|all) params="--databases mysql --tables user --skip-add-drop-table --no-create-info" echo "Exporting user to : ""$user_export"; mysqldump $user $srvr $params --where="User='kodi'" > $user_export ;; esac # NEXT VARIABLE shift done echo ' '; else echo 'EXAMPLE: ./dtbs-export video '; echo ' '; echo 'Possible user parameters:'; echo ' v or video'; echo ' m or music'; echo ' u or user'; echo ' all'; echo ' '; echo 'Note: for importing full Kodi database exports, you need SQL database root user access.' echo ' ' echo 'For a complete guide, type: "mysqldump --help" or "man mysqldump" '; echo ' '; fi # EXIT
1 GUI applications
All the tools mentioned on this wiki page for exporting data, are also capable (of courses) of importing those exported databases. The positive thing about of importing/restoring the databases and their contents, is that there are not specific settings to set beforehand. All details are in the previously exported .sql files.
Thus, choose the GUI tool you wish to use, select import function and the .sql file you want to import, and let the tool do its job.
2 Command line
The MySQLdump tool is part of the MySQL Workbench installation. When installed, you can find the application in the following location:
c:\Program Files\MySQL\MySQL Workbench 8.0\mysqldump.exe
We recommend that you create a shortcut to this application and place the shortcut in a Windows' path folder, so it can be used during a command prompt session "from anywhere".
From the command line in a terminal session, things are just as easy. Enter the following:
mysqldump -u kodi -p MyVideos119 < /path/to/your/videoexportfile.sql mysqldump -u kodi -p MyVideos82 < /path/to/your/musicexportfile.sql
Enter the database user and the appropriate password when asked for, and the import will commence. Depending on the size of the import, it can take a couple of minutes. Should there be errors during the import process, then those will be displayed promptly.