MongoDB database backup to S3

mongobackup-s3.sh

#!/bin/bash                                                                                                                                                                         
# Backs up a complete mongodb database instance running on localhost and
# uploads a gzipped dump to an S3 bucket (in this case Scaleway Object Storage)
#
# Configure s3cmd with `s3cmd --configure`

set -eu

MONGODB_USER=${MONGODB_USER}
MONGODB_PASSWORD=${MONGODB_PASSWORD}
S3_BUCKET=mongodumps

dir=$(mktemp -d)
filename="mongodump-$(date '+%F-%T' | tr '/:' -).gz"

mongodump --gzip --archive=${dir}/${filename} -u ${MONGODB_USER} -p ${MONGODB_PASSWORD}
s3cmd put ${dir}/${filename} s3://${S3_BUCKET}/