There are various options to take backups of mongodb database. Use mongodump command to take

all databases backup or a single database backup of backup of single collection.

Backup Single Database

Use this command to take backup of a single database (named mydb) only.

Backup will be created in /BackUpMongoDB/db/ directory.

[root@localhost home]# mkdir -p /home/BackUpMongoDB/dump

[root@localhost home]# chmod -R 777 BackUpMongoDB/

[root@localhost home]# cd /home/BackUpMongoDB/dump

[root@localhost dump]# pwd

[root@localhost /]# mongo

> show dbs

> use mydb

> db.createCollection("test")

> db.test.insert({c1:"a",c2:"b"})

> show collections

> show dbs

[root@localhost /]# mongodump --db mydb --out /home/BackUpMongoDB/dump/

[root@localhost dump]# pwd

[root@localhost dump]# ls

[root@localhost dump]# cd mydb/

[root@localhost mydb]# ls

[root@localhost /]#mongo

> show dbs

> use mydb

> db

> db.dropDatabase()

> show dbs

[root@localhost /]# mongodump --out /home/BackUpMongoDB/dump/

[root@localhost dump]# ls

[root@localhost dump]# cd admin/

[root@localhost admin]# ls

[root@localhost admin]#

[root@localhost BackUpMongoDB]# mongodump --collection test --db mydb --out /home/BackUpMongoDB/dump/

[root@localhost dump]# mongorestore --db mydb /home/BackUpMongoDB/dump/mydb

–drop – Will remove database if already exist.

[root@localhost BackUpMongoDB]# mongorestore

You can simply move backup files to remote server and run the same command there to restore backups.

today=`date +MongoDbFullBackUP_%d_%b_%Y`

backup_dir=/home/BackUpMongoDB

mkdir -p ${backup_dir}/${today}/dump

mongodump --out ${backup_dir}/${today}/dump/

0 18 * * * * /home/MongoDbBackup_Script/MongoDbBackup.ksh >> /home/MongoDbBackup_Log/MongoDbBackup_log.txt