Shell script to backup MySQL database.

script_backup.sh

#!/bin/bash

#
# Shell script to backup MySQL database.
#
# Notes:
# - MySQL or MariaDB is assumed
# - mysqldump is assumed
# - gzip is assumed
# - UNIX target environment is assumed
#
# Inspired by: https://gist.github.com/NARKOZ/642511
#

# Set these variables
NAME="Cron::Dump"
DB_HOSTNAME="127.0.0.1"
DB_USERNAME=""
DB_PASSWORD=""
DB_NAME=""

# Backup Dest directory. For example: /home/username/.../backups/database
DEST=""

# Slack hook
HOOK="https://hooks.slack.com/services/[key]"

# How many days old files must be to be removed
DAYS=14

# Linux bin paths
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
GZIP="$(which gzip)"

# Get date in dd-mm-yyyy format
NOW="$(date +"%Y-%m-%d_%s")"

# Create Backup sub-directories
MBD="$DEST/$NOW"
install -d $MBD

# Archive database dump
FILE="$MBD/$DB_NAME.sql"
$MYSQLDUMP -h$DB_HOSTNAME -u$DB_USERNAME -p$DB_PASSWORD $DB_NAME --no-tablespaces > $FILE

# Compress the file and cleanup
cd $DEST && tar -cf $NOW.tar $NOW && $GZIP -9 $NOW.tar && rm -rf $NOW
echo "MySQL backup is completed! Backup name is $DEST/$NOW.tar.gz"

# Remove old files
find $DEST -mtime +$DAYS -exec rm -f {} \;

# Send notification
curl -X POST -H 'Content-type: application/json' --data "{\"text\":\"\`$DB_NAME\` dump is finished! Database backup successfully on \`$DEST/$NOW.tar.gz\` :white_check_mark:\",\"username\":\"$NAME\"}" "$HOOK"
echo
exit