Backup Script MySQL

backup_sql.sh

#!/bin/bash

#cron 0 3 * * * /usr/bin/nice -n 10 /var/backup/backup_html.sh; /usr/bin/nice -n 10 /var/backup/backup_sql.sh

# settings
MYSQL_USER="backupuser"
MYSQL_PASSWORD=""
BACKUP_DIR="/var/backup/sql"
DATE=`date +"%Y-%m-%d_%H:00"`
HOUR=`date +"%H"`

mkdir "$BACKUP_DIR/$DATE/"
 
databases=`mysql --user=$MYSQL_USER --password=$MYSQL_PASSWORD -e "SHOW DATABASES;" | tr -d "| " | grep -v Database`
 
for db in $databases; do
    if [[ "$db" != "information_schema" ]] && [[ "$db" != "performance_schema" ]] && [[ "$db" != _* ]] ; then
        echo "Dumping database: $db"
        mysqldump --force --opt --user=$MYSQL_USER --password=$MYSQL_PASSWORD --databases $db > $BACKUP_DIR/$DATE/$db.sql
        gzip $BACKUP_DIR/$DATE/$db.sql
    fi
done


#delete old backups
cd $BACKUP_DIR && ls | /usr/bin/sort -r | /usr/bin/tail -n +7 | /usr/bin/xargs -n 1 rm -rf