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#!/bin/bash
# Simple script to backup MySQL databases
# Parent backup directory
backup_parent_dir="/var/backups/mysql"
# MySQL settings
mysql_user="root"
mysql_password=""
# Read MySQL password from stdin if empty
if [ -z "${mysql_password}" ]; then
echo -n "Enter MySQL ${mysql_user} password: "
read -s mysql_password
echo
fi
# Check MySQL password
echo exit | mysql --user=${mysql_user} --password=${mysql_password} -B 2>/dev/null
if [ "$?" -gt 0 ]; then
echo "MySQL ${mysql_user} password incorrect"
exit 1
else
echo "MySQL ${mysql_user} password correct."
fi
# Create backup directory and set permissions
backup_date=`date +%Y_%m_%d_%H_%M`
backup_dir="${backup_parent_dir}/bkps-${backup_date}"
echo "Backup directory: ${backup_dir}"
mkdir -p "${backup_dir}"
chmod 700 "${backup_dir}"
# Get MySQL databases
mysql_databases=`echo 'show databases' | mysql --user=${mysql_user} --password=${mysql_password} -B | sed /^Database$/d`
# Backup and compress each database
for database in $mysql_databases
do
if [ "${database}" == "information_schema" ] || [ "${database}" == "performance_schema" ]; then
additional_mysqldump_params="--skip-lock-tables"
else
additional_mysqldump_params=""
fi
echo "Creating backup of \"${database}\" database"
mysqldump ${additional_mysqldump_params} --user=${mysql_user} --password=${mysql_password} --single-transaction ${database} | gzip > "${backup_dir}/${database}.gz"
chmod 600 "${backup_dir}/${database}.gz"
done
@felipemarques

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@felipemarques felipemarques commented May 12, 2014

Thanks!

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