a_mongodb_to_s3_backup.sh

#!/bin/bash
 
#Force file syncronization and lock writes
mongo admin --eval "printjson(db.fsyncLock())"
 
MONGODUMP_PATH="/usr/bin/mongodump"
MONGO_HOST="prod.example.com"
MONGO_PORT="27017"
MONGO_DATABASE="dbname"
 
TIMESTAMP=`date +%F-%H%M`
S3_BUCKET_NAME="bucketname"
S3_BUCKET_PATH="mongodb-backups"
 
 
# Create backup
$MONGODUMP_PATH -h $MONGO_HOST:$MONGO_PORT -d $MONGO_DATABASE
 
# Add timestamp to backup
mv dump mongodb-$HOSTNAME-$TIMESTAMP
tar cf mongodb-$HOSTNAME-$TIMESTAMP.tar mongodb-$HOSTNAME-$TIMESTAMP
 
# Upload to S3
s3cmd put mongodb-$HOSTNAME-$TIMESTAMP.tar s3://$S3_BUCKET_NAME/$S3_BUCKET_PATH/mongodb-$HOSTNAME-$TIMESTAMP.tar
 
 
#Unlock databases writes
mongo admin --eval "printjson(db.fsyncUnlock())"

crontab

#every day at 01h 00m
00 01 * * * /bin/bash /home/ec2-user/mongodb_to_s3_backup.sh

install_s3cmd.sh

sudo yum --enablerepo epel install s3cmd

#to configure s3cmd
s3cmd --configure