diff --git a/assets/mysqlbackup.sh b/assets/mysqlbackup.sh new file mode 100755 index 0000000..6a59935 --- /dev/null +++ b/assets/mysqlbackup.sh @@ -0,0 +1,50 @@ +#!/bin/bash +# Simple script to backup MySQL databases + +# Parent backup directory +backup_parent_dir="/var/backups/mysql" + +# MySQL settings +mysql_user="root" +mysql_password="ROOTPASSWD" + +# 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 ${mysql_user} password correct." +fi + +# TODO rotate backups + +# Create backup directory and set permissions +backup_date=`date +%Y_%m_%d_%H_%M` +backup_dir="${backup_parent_dir}/${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} ${database} | gzip > "${backup_dir}/${database}.gz" + chmod 600 "${backup_dir}/${database}.gz" +done