backup-mongo.sh

#!/bin/bash
 
######################################################################
##
##   MongoDB Database Backup Script 
##   Written By: Rahul Kumar
##   URL: https://tecadmin.net/shell-script-backup-mongodb-database/
##   Update on: June 20, 2020
##
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export PATH=/bin:/usr/bin:/usr/local/bin
TODAY=`date +"%d%b%Y"`
 
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DB_BACKUP_PATH='/backup/mongo'
MONGO_HOST='localhost'
MONGO_PORT='27017'

# If mongodb is protected with username password.
# Set AUTH_ENABLED to 1 
# and add MONGO_USER and MONGO_PASSWD values correctly

AUTH_ENABLED=0
MONGO_USER=''
MONGO_PASSWD=''


# 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='mydb db2 newdb'

## Number of days to keep local backup copy
BACKUP_RETAIN_DAYS=30   
 
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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_RETAIN_DAYS} days  ########
 
DBDELDATE=`date +"%d%b%Y" --date="${BACKUP_RETAIN_DAYS} days ago"`
 
if [ ! -z ${DB_BACKUP_PATH} ]; then
      cd ${DB_BACKUP_PATH}
      if [ ! -z ${DBDELDATE} ] && [ -d ${DBDELDATE} ]; then
            rm -rf ${DBDELDATE}
      fi
fi
 
######################### End of script ##############################