Backup script for MySQL on Ubuntu

backup.sh

#!/bin/bash
#----------------------------------------
# OPTIONS
#----------------------------------------
USER='XXXXXX'
PASSWORD='XXXXXX'
DAYS_TO_KEEP=7
GZIP=0
BACKUP_PATH='backups/mysql'
#----------------------------------------

# Create the backup folder
if [ ! -d $BACKUP_PATH ]; then
  mkdir -p $BACKUP_PATH
fi

# Get list of database names
databases=`mysql -u $USER -p$PASSWORD -e "SHOW DATABASES;" | tr -d "|" | grep -v Database`

for db in $databases; do
  if [ $db == 'information_schema' ] || [ $db == 'performance_schema' ] || [ $db == 'mysql' ] || [ $db == 'sys' ]; then
    echo "Skipping database: $db"
    continue
  fi
  
  date=$(date -I)
  
  echo "Backing up database: $db"  
  mysqldump -u $USER -p$PASSWORD --databases $db > $BACKUP_PATH/$date-$db.sql
  mysqldump -u $USER -p$PASSWORD --databases $db | gzip -c > $BACKUP_PATH/$date-$db.gz
done

# Delete old backups
if [ "$DAYS_TO_KEEP" -gt 0 ] ; then
  echo "Deleting backups older than $DAYS_TO_KEEP days"
  find $BACKUP_PATH/* -mtime +$DAYS_TO_KEEP -exec rm {} \;
fi