Backup MongoDB databases with Dropbox and Dokku

dokku-mongo-export.sh

#!/bin/bash

set -e

echo "Backing up MongoDB databases to Dropbox ..."

dt=$(date +"%Y-%m-%d")

echo " today is $dt"

BACKUP_PATH=~/Dropbox/mongo/backup
echo " creating $BACKUP_PATH .."

dbs=$(dokku mongo:list | grep -v ===)

for db in $dbs
do
  echo " backing up $db ..."

  fp=$BACKUP_PATH/$(date +"%Y")/$db
  mkdir -p $fp
  f=$fp/$(date +"%Y-%m")-$db.dump.gz
  dokku mongo:export $db > $f
  echo "  written $f"
  
  dp=$BACKUP_PATH/daily/$(date +"%A")
  mkdir -p $dp
  d=$dp/$db.dump.gz
  cp $f $d
done

The updated version creates a monthly and day of the week version. This saves space and still gives you the last 7 days of backups.