MongoDB Backup

Backup is done using mongodump utility.

1.) Mongodump : This utility will backup up full mongodb in the current directory
[mongod@sikki4u1c backup]$ mongodump -u mongo-root -p passw0rd
2019-08-19T10:46:03.367+0000    writing admin.system.users to
2019-08-19T10:46:03.367+0000    done dumping admin.system.users (3 documents)
2019-08-19T10:46:03.367+0000    writing admin.system.version to
2019-08-19T10:46:03.368+0000    done dumping admin.system.version (2 documents)
2019-08-19T10:46:03.368+0000    writing movie.mycol to
2019-08-19T10:46:03.368+0000    writing demo.peeps to
2019-08-19T10:46:03.368+0000    writing movie.movie to
2019-08-19T10:46:03.369+0000    done dumping demo.peeps (1 document)
2019-08-19T10:46:03.369+0000    done dumping movie.mycol (3 documents)
2019-08-19T10:46:03.377+0000    done dumping movie.movie (1 document)
[mongod@sikki4u1c backup]$ ls -ltr
total 0
drwxrwxr-x. 5 mongod mongod 41 Aug 19 10:46 dump
[mongod@sikki4u1c backup]$ cd dump/
[mongod@sikki4u1c dump]$ ls -ltr
total 4
drwxrwxr-x. 2 mongod mongod 4096 Aug 19 10:46 admin
drwxrwxr-x. 2 mongod mongod   92 Aug 19 10:46 movie
drwxrwxr-x. 2 mongod mongod   49 Aug 19 10:46 demo
[mongod@sikki4u1c dump]$ pwd
/home/mongod/backup/dump
[mongod@sikki4u1c dump]$

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2.) mongodump - with more option and explicitly mention the output directory

[mongod@sikki4u1c backup]$ mongodump -u mongo-root -p passw0rd --host 127.0.0.1 --port 27017 --out /home/mongod/backup/dump

2019-08-19T10:50:39.928+0000    writing admin.system.users to

2019-08-19T10:50:39.928+0000    done dumping admin.system.users (3 documents)

2019-08-19T10:50:39.928+0000    writing admin.system.version to

2019-08-19T10:50:39.929+0000    done dumping admin.system.version (2 documents)

2019-08-19T10:50:39.929+0000    writing movie.mycol to

2019-08-19T10:50:39.929+0000    writing demo.peeps to

2019-08-19T10:50:39.929+0000    writing movie.movie to

2019-08-19T10:50:39.929+0000    done dumping movie.mycol (3 documents)

2019-08-19T10:50:39.930+0000    done dumping demo.peeps (1 document)

2019-08-19T10:50:39.938+0000    done dumping movie.movie (1 document)

[mongod@sikki4u1c backup]$

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3.) MOngodump with oplog:  tells mongodump to capture operations that occured during the backup process. this allows better point in time backup.

 mongodump -u mongo-root -p passw0rd --host 127.0.0.1 --port 27017 --out /home/mongod/backup/dump --oplog

NOTE: --oplog works only for replica sets

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4.) MOngodump for specific database:

[mongod@sikki4u1c dump]$ mongodump -u mongo-root -p passw0rd --host 127.0.0.1 --port 27017 --out /home/mongod/backup/dump --authenticationDatabase admin --db movie
2019-08-19T10:59:35.393+0000    writing movie.mycol to
2019-08-19T10:59:35.393+0000    writing movie.movie to
2019-08-19T10:59:35.394+0000    done dumping movie.movie (1 document)
2019-08-19T10:59:35.394+0000    done dumping movie.mycol (3 documents)
[mongod@sikki4u1c dump]$

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5.) Mongodump for single collection backup

[mongod@sikki4u1c dump]$ mongodump -u mongo-root -p passw0rd --host 127.0.0.1 --port 27017 --out /home/mongod/backup/dump --authenticationDatabase admin --db movie --collection mycol
2019-08-19T11:01:26.023+0000    writing movie.mycol to
2019-08-19T11:01:26.024+0000    done dumping movie.mycol (3 documents)
[mongod@sikki4u1c dump]$

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6.) Mongodump for multiple collection backup

This is bit tricky:

[mongod@sikki4u1c dump]$ colls=(movie mycol)

[mongod@sikki4u1c dump]$ for c in ${colls[@]}

> do

>  mongodump -u mongo-root -p passw0rd --host 127.0.0.1 --port 27017 --out /home/mongod/backup/dump --authenticationDatabase admin --db movie --collection $c

> done

2019-08-19T11:06:55.752+0000    writing movie.movie to

2019-08-19T11:06:55.753+0000    done dumping movie.movie (1 document)

2019-08-19T11:06:55.785+0000    writing movie.mycol to

2019-08-19T11:06:55.787+0000    done dumping movie.mycol (3 documents)

[mongod@sikki4u1c dump]$ ls -ltr

total 0

drwxrwxr-x. 2 mongod mongod 92 Aug 19 11:06 movie

[mongod@sikki4u1c dump]$ cd movie/

[mongod@sikki4u1c movie]$ ls

movie.bson  movie.metadata.json  mycol.bson  mycol.metadata.json

[mongod@sikki4u1c movie]$ ls -ltr

total 16

-rw-rw-r--. 1 mongod mongod 125 Aug 19 11:06 movie.metadata.json

-rw-rw-r--. 1 mongod mongod  48 Aug 19 11:06 movie.bson

-rw-rw-r--. 1 mongod mongod 184 Aug 19 11:06 mycol.metadata.json

-rw-rw-r--. 1 mongod mongod 663 Aug 19 11:06 mycol.bson

[mongod@sikki4u1c movie]$

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