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Databases

apt-get install automysqlbackup autopostgresqlbackup backupninja

backupninja

Add to /etc/backup.d/20.mysql 

nodata = performance_schema.cond_instances

automysqlbackup

Default debian configuration should be enough. Pleae test if script has access to mysqldatabase by issuing command: 

mysql --defaults-file=/etc/mysql/debian.cnf --execute="SHOW DATABASES"

You can customize configuration:

/etc/default/automysqlbackup
BACKUPDIR="/var/lib/automysqlbackup"
DBNAMES="all"
DBEXCLUDE="information_schema performance_schema"

Issues

ERROR mysqldump: Got error: 1142: SELECT,LOCK TABL command denied to user 'debian-sys-maint'@'localhost' for table 'cond_instances' when using LOCK TABLES
SOLUTION Add DBNAMES and DBEXCLUDE configuration values like in example above.
ERROR Warning: Skipping the data of table mysql.event. Specify the –events option explicitly.
SOLUTION 
[mysqldump]
...
events
ignore-table=mysql.events 
...

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Default configuration for Debian is using debian-sys-maint user to get access to database. This user cannot get access to information_schema database.

autopostgresqlbackup

# Password # create a file $HOME/.pgpass containing a line like this # hostname:*:*:dbuser:dbpass # replace hostname with the value of DBHOST and postgres with. # the value of USERNAME

Default $HOME for user postgres is /var/lib/postgresql

Pleae test if script has access by issuing command: 

mysqldump --defaults-file=/etc/mysql/debian.cnf --all-databases --no-data

You can customize configuration:

/etc/default/autopostgresqlbackup
BACKUPDIR="/var/lib/autopostgresqlbackup"