#!/bin/bash

AWS_ACCESS_KEY_ID=***
AWS_SECRET_ACCESS_KEY=***
BUCKET=db-snapshots

MYSQL_USER=***
MYSQL_PASSWORD=***
MYSQL_HOST=***
MYSQL_DATABASE_NAME= 'database_name'

TIMESTAMP=$(date +"%d-%b-%Y-%H-%M-%S")

#logging
LOG_ROOT="/backup/mysql_dump/logs/dump.log"

#Dump of Mysql Database into S3
echo "[db-take-snapshot]: creating backup of database $MYSQL_DATABASE_NAME start at $TSTAMP" >> "$LOG_ROOT"

mysqldump -u $MYSQL_USER
          -p $MYSQL_PASSWORD
          -h $MYSQL_HOST
          --single-transaction
          --routines --triggers
          --database_name  $MYSQL_DATABASES_NAME| gzip > backup.gz

echo "[db-take-snapshot]:Finished backup of database and sending it in S3 Bucket at $TIMESTAMP" >> "$LOG_ROOT"

S3_KEY=$BUCKET/backups/$(date "+%Y-%m-%d")-backup.gz
aws s3 cp backup.gz s3://$S3_KEY --sse AES256

echo "[db-take-snapshot]: Copied to S3 at $TIMESTAMP" >> "$LOG_ROOT"

rm -f backup.gz

echo "[db-take-snapshot]: Backup finished at $TIMESTAMP" >> "$LOG_ROOT"

/db-take-snapshot-s3.sh: line 25: backup.gz: Permission denied