Mongo db backup script - tested on OSX

mongodb_backup.sh

#!/bin/bash

######################################################################
#
# MONGODB backup script
# Notes - Use directory name to get date input instead of relying on file
#         timestamp
#       - Backup FIRST then remove older backups - if you don't have much
#         space then you can reverse the process - but this ensure if failure
#         occurs older backup will not get removed until fixed
#
####################################################################

export PATH=/bin:/usr/bin:/usr/local/bin
TODAY=`date +"%Y-%m-%d"`

## Number of days to keep local backup copy
BACKUP_RETENTION_DAYS=7
DBDELDATE=`gdate +"%Y%m%d" --date="${BACKUP_RETENTION_DAYS} days ago"`
echo "info: script will remove backups older than $DBDELDATE"

######################################################################
#
# Set backup directory and host params
#

DB_BACKUP_PATH='/backup/mongo'
MONGO_HOST='localhost'
MONGO_PORT='27017'


######################################################################
#
# Set AUTH_ENABLED to 1 if MONGO requires a username/password
# and add MONGO_USER and MONGO_PASSWD values correctly

AUTH_ENABLED=1
MONGO_USER='root'
MONGO_PASSWD='root'

######################################################################
#
# Set DATABASE_NAMES to "ALL" to backup all databases.
# or specify databases names seprated with space to backup
# specific databases only.

DATABASE_NAMES='ALL'
#DATABASE_NAMES='test local db1 db2 db3'


######################################################################
#
# Backup now
mkdir -p ${DB_BACKUP_PATH}/${TODAY}

AUTH_PARAM=""

if [ ${AUTH_ENABLED} -eq 1 ]; then
 AUTH_PARAM=" --username ${MONGO_USER} --password ${MONGO_PASSWD} "
fi

if [ ${DATABASE_NAMES} = "ALL" ]; then
 echo "You have choose to backup all databases"
 mongodump --host ${MONGO_HOST} --port ${MONGO_PORT} ${AUTH_PARAM} --out ${DB_BACKUP_PATH}/${TODAY}/
else
 echo "Running backup for selected databases"
 for DB_NAME in ${DATABASE_NAMES}
 do
 mongodump --host ${MONGO_HOST} --port ${MONGO_PORT} --db ${DB_NAME} ${AUTH_PARAM} --out ${DB_BACKUP_PATH}/${TODAY}/
 done
fi

######################################################################
#
# Remove backups older than {BACKUP_RETENTION_DAYS} days  ########

if [ ! -z ${DB_BACKUP_PATH} ]; then
  for i in `ls -d ${DB_BACKUP_PATH}/* | cut -f1`;
  do
    local_dir=$(basename "$i" | sed -e 's/-//g')
    local_dir_date=$( date -j -f "%Y%m%d" "$local_dir"  +"%s" )
    cutoff_date=$( date -j -f "%Y%m%d" "$DBDELDATE" +"%s"  )
    if (( $local_dir_date < $cutoff_date )); then
       echo "  ==> removing stale backup ${i}"
       rm -rf "${i}"
    fi
  done
fi