mysqldump with db in a separate file

Question

I\'m writing a single line command that backups all databases into their respective names instead using of dumping all in one sql.

Eg: db1 get saved to db1.sql and

Answer 1

Creating backups per database is indeed much more efficient. Not only easier to restore once needed, but also I experienced that making a backup of the whole database would break in case one table was broken/corrupt. And by creating backups per database it will only break for that database and the rest is still valid.

The oneliner we created to backup our mysql databases is:

mysql -s -r -u bupuser -pSecret -e 'show databases' | while read db; do mysqldump -u bupuser -pSecret $db -r /var/db-bup/${db}.sql; [[ $? -eq 0 ]] && gzip /var/db-bup/${db}.sql; done

Best to create a new readonly mysql user 'bupuser' with passsword 'Secret' (change!). It will first retrieve the list of databases. Then loop and for each database create a dump.sql file to /var/db-bup (you can change). And only when there are no errors encountered then also gzip the file which will really drastically save storage. When some databases encountered errors then you will see the .sql file and not the .sql.qz file.

Answer 2

mysql -uroot -N -e 'show databases' | while read dbname; do mysqldump -uroot --complete-insert --some-other-options "$dbname" > "$dbname".sql; done