Script to create full backups with mongodump.

run-mongodump.sh

#!/bin/sh

# https://gist.github.com/omegazeng/18b58dfc6995aaeed0bce70bdbb30caf
# use admin
# db.createUser(
#   {
#     user: "backup",
#     pwd: "YourPassword",
#     roles: [ "backup", "restore" ]
#   }
# )
#
# Usage:
# MONGO_PASSWORD=YourPassword MONGO_HOST="mongo01.example.com:27017,mongo02.example.com:27017" REPL_SET_NAME=repl-set bash run-mongodump.sh

MONGO_USER=backup
#MONGO_PASSWORD=YourPassword
#MONGO_HOST="mongo01.example.com:27017,mongo02.example.com:27017"
#REPL_SET_NAME=repl-set
AUTH_DB=admin

BACKCMD=mongodump
BASEBACKDIR=/data/mongodb_backup
BACKDIR=$BASEBACKDIR/$(date "+%Y-%m-%d_%H-%M-%S")
KEEP_DAYS=14 # Days of a backup should kept for.

START=`date +%s`

echo "----------------------------"
echo
echo "run-mongodump.sh: MongoDB backup script"
echo "started: `date`"
echo

# Backup
$BACKCMD --host $REPL_SET_NAME/$MONGO_HOST --username $MONGO_USER --password $MONGO_PASSWORD --authenticationDatabase $AUTH_DB --gzip --out $BACKDIR
[[ $? == 0 ]] && echo "Databases backed up successfully to: $BACKDIR" || echo "Databases backup failed"

# Delete old backups
for DEL in `find $BASEBACKDIR -mindepth 1 -maxdepth 1 -type d -mtime +$KEEP_DAYS -printf "%P\n"`
do
  echo "deleting $DEL"
  rm -rf $BASEBACKDIR/$DEL
done

SPENT=$((`date +%s` - $START))
echo
echo "took $SPENT seconds"
echo "completed: `date`"
exit 0