Bash script to create mongodb backup and upload to s3

mongo-backup-script.sh

#!/bin/bash

ADMIN_DB_URI="mongodb://backupuser:backupuser@localhost:27017/admin?authSource=admin"

MONGODUMP_PATH="/usr/bin/mongodump"
S3_BUCKET_NAME="dbbackups" #replace with your bucket name on Amazon S3
S3_BUCKET_PATH="backups"

#Force file syncronization and lock writes
mongosh $ADMIN_DB_URI --eval "printjson(db.fsyncLock())"


# defind the database names
declare -a arr=("db1" "db2" "db3" "db4")

## now loop through the above array
for MONGO_DATABASE in "${arr[@]}"
do
        echo $MONGO_DATABASE
        # construct database uri for above db
        DATABASE_URI="mongodb://backupuser:backupuser@localhost:27017/$MONGO_DATABASE?authSource=admin"

        echo $MONGODUMP_PATH

        TIMESTAMP=`date +%F-%H%M`

        TMP_PATH=$MONGO_DATABASE-$TIMESTAMP
        TMP_PATH_FILE=$MONGO_DATABASE-$TIMESTAMP.tar

        # Create backup
        $MONGODUMP_PATH --quiet -d $MONGO_DATABASE $DATABASE_URI
        
        # move dump folder to a path
        mv dump $TMP_PATH
        tar cf $TMP_PATH_FILE $TMP_PATH
        
        # Upload to S3
        s3cmd put $TMP_PATH_FILE s3://$S3_BUCKET_NAME/$S3_BUCKET_PATH/$TMP_PATH_FILE

        # Unlock database writes
        mongo $ADMIN_DB_URI --eval "printjson(db.fsyncUnlock())"
        
        # Delete local files
        rm -rf $MONGO_DATABASE-*
done