It is very important to make regular backups of your data to protect it from loss.In this tutorial we will use a bash script which automates your MySQL database backups on daily,weekly or as per your requirement basis.The Linux s3cmd script can easily be used to back up your MySQL databases. 
Create S3 Bucket :
Login to your AWS account and go to the “Services > S3” then click on “Create Bucket”. It will prompt you to provide bucket name whenever you create any S3 bucket always maintain format for bucket name which helps to manage multiple buckets in standard way.
Create IAM User :
Once the bucket is created, we need one user who has complete rights to access the bucket. To create user go to “Services–>IAM–>Users”.
After click on users give name of user here we are created user name as :
backupuser
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": ["s3:ListAllMyBuckets"],
"Resource": "arn:aws:s3:::*"
},
{
"Effect": "Allow",
"Action": [
"s3:ListBucket",
"s3:GetBucketLocation"
],
"Resource": "arn:aws:s3:::dptsourcebackup"
},
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject",
"s3:DeleteObject"
],
"Resource": "arn:aws:s3:::dptsourcebackup/*"
}
]
}
Attach the policy to new user
Download the Access Key and Secret Key of the IAM User and note it.
Once you have done with S3 bucket configuration, follow below provided steps to configure MySQL database backup script on the server.
Step 1 : Install s3cmd Utility
s3cmd is a command line utility used for creating s3 buckets, uploading, retrieving and managing data to Amazon s3 storage.
For CentOS/RHEL 6 Server
$ wget http://s3tools.org/repo/RHEL_6/s3tools.repo
$ yum install install s3cmd
For CentOS/RHEL 7 Server
$ wget http://ufpr.dl.sourceforge.net/project/s3tools/s3cmd/1.6.1/s3cmd-1.6.1.tar.gz
$ tar xzf s3cmd-1.6.1.tar.gz
$ cd s3cmd-1.6.1
$ sudo python setup.py install
For Ubuntu/Debian
$ sudo apt-get install s3cmd
Step 2 : Configure s3cmd Environment
In order to configure s3cmd we would require Access Key and Secret Key of your S3 Amazon account.We have already downloaded these keys earlier.
$ sudo s3cmd --configure
Output :
Enter new values or accept defaults in brackets with Enter.
Refer to user manual for detailed description of all options.
Access key and Secret key are your identifiers for Amazon S3
Access Key: xxxxxxxxxxxxxxxxxxxxxx
Secret Key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Encryption password is used to protect your files from reading
by unauthorized persons while in transfer to S3
Encryption password: xxxxxxxxxx
Path to GPG program [/usr/bin/gpg]:
When using secure HTTPS protocol all communication with Amazon S3
servers is protected from 3rd party eavesdropping. This method is
slower than plain HTTP and can't be used if you're behind a proxy
Use HTTPS protocol [No]: Yes
Test access with supplied credentials? [Y/n] Y
Please wait, attempting to list all buckets...
Success. Your access key and secret key worked fine 🙂
Now verifying that encryption works...
Success. Encryption and decryption worked fine 🙂
Save settings? [y/N] y
Configuration saved to '/root/.s3cfg'
Step3 : Configure Backup Script
Copy below backup script in your directory “/opt” and give name for file “mysqlbackup.sh”.
#!/bin/bash
# Be pretty
echo -e " "
echo -e " Amazon Web Service S3 Mysql Backup Script "
echo -e " "
# Basic variables
mysqluser="root"
mysqlpass="XXXXXXXX"
bucket="s3://BUCKET_NAME"
# Timestamp (sortable AND readable)
stamp=`date +"%s - %A %d %B %Y @ %H%M"`
# List all the databases and eliminate the default
databases=`mysql -u root -p$mysqlpass -e "SHOW DATABASES;" | tr -d "| " | grep -v "\(Database\|information_schema\|performance_schema\|mysql\|test\)"`
# Feedback
echo -e "Dumping to \e[1;32m$bucket/$stamp/\e[00m"
# Loop the databases
for db in $databases; do
# Define our filenames
filename="$db-$stamp.sql.gz"
tmpfile="/tmp/$filename"
object="$bucket/$stamp/$filename"
# Feedback
echo -e "\e[1;34m$db\e[00m"
# Dump and zip
echo -e " creating \e[0;35m$tmpfile\e[00m"
mysqldump --single-transaction -u$mysqluser -p$mysqlpass --databases "$db" | gzip -c > "$tmpfile"
# Upload
echo -e " uploading..."
s3cmd put "$tmpfile" "$object"
# Delete
rm -f "$tmpfile"
done;
# Jobs a goodun
echo -e "\e[1;32mJob completed\e[00m"
Change Permission and Test Backup Script
$ sudo chmod +x mysqlbackup.sh
$ sudo bash -x mysqlbackup.sh
Output
Step 4 : Configure a Cronjob
We will schedule our backup script to execute at a particular time.
Below cron execute at 2AM IST
00 02 * * * root /bin/bash /opt/scripts/mysqlbackup.sh > /tmp/mysqlBackups.log 2>&1
Creating New Bucket :
s3cmd mb s3://dptsource
Uploading file in Bucket :
s3cmd put tech.txt s3://dptsource/
Uploading Directory in Bucket
s3cmd put -r backup s3://dptsource/
List Data of S3 Bucket
s3cmd ls s3://dptsource/
List Data of directory in S3 Bucket
s3cmd ls -r s3://dptsource/
Download Files from Bucket
s3cmd get s3://dptsource/tech.txt
Remove Data of S3 Bucket
s3cmd del s3://dptsource/tech.txt
Remove S3 Bucket :
s3cmd rb s3://dptsource/
Bucket Policy and Backup script can be downloaded from :
https://github.com/dptsource/Backup-to-Amazon-S3.git
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