Mongodump Shell Script for Cronjob

mongo_backup.sh

#!/bin/bash
 
MONGO_DATABASE="your_db_name"
APP_NAME="your_app_name"

MONGO_HOST="127.0.0.1"
MONGO_PORT="27017"
TIMESTAMP=`date +%F-%H%M`
MONGODUMP_PATH="/usr/bin/mongodump"
BACKUPS_DIR="/home/username/backups/$APP_NAME"
BACKUP_NAME="$APP_NAME-$TIMESTAMP"
 
# mongo admin --eval "printjson(db.fsyncLock())"
# $MONGODUMP_PATH -h $MONGO_HOST:$MONGO_PORT -d $MONGO_DATABASE
$MONGODUMP_PATH -d $MONGO_DATABASE
# mongo admin --eval "printjson(db.fsyncUnlock())"
 
mkdir -p $BACKUPS_DIR
mv dump $BACKUP_NAME
tar -zcvf $BACKUPS_DIR/$BACKUP_NAME.tgz $BACKUP_NAME
rm -rf $BACKUP_NAME

Make it executable:

chmod +x mongo_backup.sh

Schedule a Cronjob:

sudo su
crontab -e

Enter this in a new line:

# Everyday at 1 a.m.
00 01 * * * /bin/bash /home/username/scripts/mongo_backup.sh

---

Also See: mongo-sync

I used part of this to do it in a cron job:

mongodump --host 0.0.0.0 -d mydb --username mayusername --password mypassword --out /var/dbbackups/backup_$(date +%Y%m%d) && cd /var/dbbackups && tar -zcf backup_$(date +%Y%m%d).tar.gz backup_$(date +%Y%m%d)/mydb

Here is also a nice documentation to ensure, that the script will run only once simultaniusly:

http://wiki.bash-hackers.org/howto/mutex

This is handy! I also added an option in the output to save based on hostname, should you want to organize it in a distributed fashion.

BACKUP_NAME="$APP_NAME-$HOSTNAME-$TIMESTAMP"

according to this post of mongo DB team we can use new --archive=<name> and --gzip options to simpify script since mongo v.3.2.x

ARCHIVE_PATH="$BACKUPS_DIR/$BACKUP_NAME.gz"
$MONGODUMP_PATH --db $MONGO_DATABASE --archive=$ARCHIVE_PATH --gzip

How can you make it delete dumps after 7 days ?

Thanks man!

Thanks, Mate!!

Thanks for this... really handy

Great! Thanks