How to export all collections in MongoDB? - mongodb

Question

I want to export all collections in MongoDB by the command:
mongoexport -d dbname -o Mongo.json
The result is:
No collection specified!
The manual says, if you don't specify a collection, all collections will be exported.
However, why doesn't this work?
http://docs.mongodb.org/manual/reference/mongoexport/#cmdoption-mongoexport--collection
My MongoDB version is 2.0.6.

Answer 1

For lazy people, use mongodump, it's faster:
mongodump -d <database_name> -o <directory_backup>
And to "restore/import" it (from directory_backup/dump/):
mongorestore -d <database_name> <directory_backup>
This way, you don't need to deal with all collections individually. Just specify the database.
Note that I would recommend against using mongodump/mongorestore for big data storages. It is very slow and once you get past 10/20GB of data it can take hours to restore.

Answer 2

I wrote bash script for that. Just run it with 2 parameters (database name, dir to store files).
#!/bin/bash
if [ ! $1 ]; then
echo " Example of use: $0 database_name [dir_to_store]"
exit 1
fi
db=$1
out_dir=$2
if [ ! $out_dir ]; then
out_dir="./"
else
mkdir -p $out_dir
fi
tmp_file="fadlfhsdofheinwvw.js"
echo "print('_ ' + db.getCollectionNames())" > $tmp_file
cols=`mongo $db $tmp_file | grep '_' | awk '{print $2}' | tr ',' ' '`
for c in $cols
do
mongoexport -d $db -c $c -o "$out_dir/exp_${db}_${c}.json"
done
rm $tmp_file

Answer 3

For local and remote dump and restore:
For Local
Local dump
mongodump -d mydb -o ./mongo-backup
Local restore
mongorestore -d mydb ./mongo-backup/mydb
For remote
Remote dump
mongodump --uri "mongodb+srv://Admin:MYPASS#appcluster.15lf4.mongodb.net/mytestdb" -o ./mongo-backup
Remote restore
mongorestore --uri "mongodb+srv://Admin:MYPASS#appcluster.15lf4.mongodb.net/mytestdb" ./mongo-backup/mytestdb
Update:
If you're using mongo 4.0 you may encounter a snapshot error, Then you can run with this argument: --forceTableScan. See here for more information. The error is something like this:
mongodump error reading collection: BSON field 'FindCommandRequest.snapshot' is an unknown field.

Answer 4

To export all collections:
mongodump -d database_name -o directory_to_store_dumps
To restore them:
mongorestore -d database_name directory_backup_where_mongodb_tobe_restored

Answer 5

Follow the steps below to create a mongodump from the server and import it another server/local machine which has a username and a password
1. mongodump -d dbname -o dumpname -u username -p password
2. scp -r user#remote:~/location/of/dumpname ./
3. mongorestore -d dbname dumpname/dbname/ -u username -p password

Answer 6

Please let us know where you have installed your Mongo DB? (either in Ubuntu or in Windows)
For Windows:
Before exporting you must connect to your Mongo DB in cmd prompt and make sure that you are able to connect to your local host.
Now open a new cmd prompt and execute the below command,
mongodump --db database name --out path to save
eg: mongodump --db mydb --out c:\TEMP\op.json
Visit https://www.youtube.com/watch?v=hOCp3Jv6yKo for more details.
For Ubuntu:
Login to your terminal where Mongo DB is installed and make sure you are able to connect to your Mongo DB.
Now open a new terminal and execute the below command,
mongodump -d database name -o file name to save
eg: mongodump -d mydb -o output.json
Visit https://www.youtube.com/watch?v=5Fwd2ZB86gg for more details.

Answer 7

Previous answers explained it well, I am adding my answer to help in case you are dealing with a remote password protected database
mongodump --host xx.xxx.xx.xx --port 27017 --db your_db_name --username your_user_name --password your_password --out /target/folder/path

Answer 8

I realize that this is quite an old question and that mongodump/mongorestore is clearly the right way if you want a 100% faithful result, including indexes.
However, I needed a quick and dirty solution that would likely be forwards and backwards compatible between old and new versions of MongoDB, provided there's nothing especially wacky going on. And for that I wanted the answer to the original question.
There are other acceptable solutions above, but this Unix pipeline is relatively short and sweet:
mongo --quiet mydatabase --eval "db.getCollectionNames().join('\n')" | \
grep -v system.indexes | \
xargs -L 1 -I {} mongoexport -d mydatabase -c {} --out {}.json
This produces an appropriately named .json file for each collection.
Note that the database name ("mydatabase") appears twice. I'm assuming the database is local and you don't need to pass credentials but it's easy to do that with both mongo and mongoexport.
Note that I'm using grep -v to discard system.indexes, because I don't want an older version of MongoDB to try to interpret a system collection from a newer one. Instead I'm allowing my application to make its usual ensureIndex calls to recreate the indexes.

Answer 9

You can do it using the mongodump command
Step 1 : Open command prompt
Step 2 : go to bin folder of your mongoDB installation (C:\Program Files\MongoDB\Server\4.0\bin)
Step 3 : then execute the following command
mongodump -d your_db_name -o destination_path
your_db_name = test
destination_path = C:\Users\HP\Desktop
Exported files will be created in destination_path\your_db_name folder (in this example C:\Users\HP\Desktop\test)
References : o7planning

Answer 10

In case you want to connect a remote mongoDB server like mongolab.com, you should pass connection credentials
eg.
mongoexport -h id.mongolab.com:60599 -u username -p password -d mydb -c mycollection -o mybackup.json

Answer 11

If you are OK with the bson format, then you can use the mongodump utility with the same -d flag. It will dump all the collections to the dump directory (the default, can be changed via the -o option) in the bson format. You can then import these files using the mongorestore utility.

Answer 12

If you're dealing with remote databases you can try these commands given that you don't mind the output being BSON
1. Dump out as a gzip archive
mongodump --uri="mongodb://YOUR_USER_ID:YOUR_PASSWORD#YOUR_HOST_IP/YOUR_DB_NAME" --gzip --archive > YOUR_FILE_NAME
2. Restore (Copy a database from one to another)
mongorestore --uri="mongodb://$targetUser:$targetPwd#$targetHost/$targetDb" --nsFrom="$sourceDb.*" --nsTo="$targetDb.*" --gzip --archive

Answer 13

You can use mongo --eval 'printjson(db.getCollectionNames())' to get the list of collections
and then do a mongoexport on all of them.
Here is an example in ruby
out = `mongo #{DB_HOST}/#{DB_NAME} --eval "printjson(db.getCollectionNames())"`
collections = out.scan(/\".+\"/).map { |s| s.gsub('"', '') }
collections.each do |collection|
system "mongoexport --db #{DB_NAME} --collection #{collection} --host '#{DB_HOST}' --out #{collection}_dump"
end

Answer 14

I needed the Windows batch script version. This thread was useful, so I thought I'd contribute my answer to it too.
mongo "{YOUR SERVER}/{YOUR DATABASE}" --eval "rs.slaveOk();db.getCollectionNames()" --quiet>__collections.txt
for /f %%a in ('type __collections.txt') do #set COLLECTIONS=%%a
for %%a in (%COLLECTIONS%) do mongoexport --host {YOUR SERVER} --db {YOUR DATABASE} --collection %%a --out data\%%a.json
del __collections.txt
I had some issues using set /p COLLECTIONS=<__collections.txt, hence the convoluted for /f method.

Answer 15

I found after trying lots of convoluted examples that very simple approach worked for me.
I just wanted to take a dump of a db from local and import it on a remote instance:
on the local machine:
mongodump -d databasename
then I scp'd my dump to my server machine:
scp -r dump user#xx.xxx.xxx.xxx:~
then from the parent dir of the dump simply:
mongorestore
and that imported the database.
assuming mongodb service is running of course.

Answer 16

If you want, you can export all collections to csv without specifying --fields (will export all fields).
From http://drzon.net/export-mongodb-collections-to-csv-without-specifying-fields/ run this bash script
OIFS=$IFS;
IFS=",";
# fill in your details here
dbname=DBNAME
user=USERNAME
pass=PASSWORD
host=HOSTNAME:PORT
# first get all collections in the database
collections=`mongo "$host/$dbname" -u $user -p $pass --eval "rs.slaveOk();db.getCollectionNames();"`;
collections=`mongo $dbname --eval "rs.slaveOk();db.getCollectionNames();"`;
collectionArray=($collections);
# for each collection
for ((i=0; i<${#collectionArray[#]}; ++i));
do
echo 'exporting collection' ${collectionArray[$i]}
# get comma separated list of keys. do this by peeking into the first document in the collection and get his set of keys
keys=`mongo "$host/$dbname" -u $user -p $pass --eval "rs.slaveOk();var keys = []; for(var key in db.${collectionArray[$i]}.find().sort({_id: -1}).limit(1)[0]) { keys.push(key); }; keys;" --quiet`;
# now use mongoexport with the set of keys to export the collection to csv
mongoexport --host $host -u $user -p $pass -d $dbname -c ${collectionArray[$i]} --fields "$keys" --csv --out $dbname.${collectionArray[$i]}.csv;
done
IFS=$OIFS;

Answer 17

If you want to dump all collections in all databases (which is an expansive interpretation of the original questioner's intent) then use
mongodump
All the databases and collections will be created in a directory called 'dump' in the 'current' location

Answer 18

you can create zip file by using following command .It will create zip file of database {dbname} provided.You can later import the following zip file in you mongo DB.
Window filepath=C:\Users\Username\mongo
mongodump --archive={filepath}\+{filename}.gz --gzip --db {dbname}

Answer 19

Here's what worked for me when restoring an exported database:
mongorestore -d 0 ./0 --drop
where ./contained the exported bson files. Note that the --drop will overwrite existing data.

Answer 20

if you want to use mongoexport and mongoimport to export/import each collection from database, I think this utility can be helpful for you.
I've used similar utility couple of times;
LOADING=false
usage()
{
cat << EOF
usage: $0 [options] dbname
OPTIONS:
-h Show this help.
-l Load instead of export
-u Mongo username
-p Mongo password
-H Mongo host string (ex. localhost:27017)
EOF
}
while getopts "hlu:p:H:" opt; do
MAXOPTIND=$OPTIND
case $opt in
h)
usage
exit
;;
l)
LOADING=true
;;
u)
USERNAME="$OPTARG"
;;
p)
PASSWORD="$OPTARG"
;;
H)
HOST="$OPTARG"
;;
\?)
echo "Invalid option $opt"
exit 1
;;
esac
done
shift $(($MAXOPTIND-1))
if [ -z "$1" ]; then
echo "Usage: export-mongo [opts] <dbname>"
exit 1
fi
DB="$1"
if [ -z "$HOST" ]; then
CONN="localhost:27017/$DB"
else
CONN="$HOST/$DB"
fi
ARGS=""
if [ -n "$USERNAME" ]; then
ARGS="-u $USERNAME"
fi
if [ -n "$PASSWORD" ]; then
ARGS="$ARGS -p $PASSWORD"
fi
echo "*************************** Mongo Export ************************"
echo "**** Host: $HOST"
echo "**** Database: $DB"
echo "**** Username: $USERNAME"
echo "**** Password: $PASSWORD"
echo "**** Loading: $LOADING"
echo "*****************************************************************"
if $LOADING ; then
echo "Loading into $CONN"
tar -xzf $DB.tar.gz
pushd $DB >/dev/null
for path in *.json; do
collection=${path%.json}
echo "Loading into $DB/$collection from $path"
mongoimport $ARGS -d $DB -c $collection $path
done
popd >/dev/null
rm -rf $DB
else
DATABASE_COLLECTIONS=$(mongo $CONN $ARGS --quiet --eval 'db.getCollectionNames()' | sed 's/,/ /g')
mkdir /tmp/$DB
pushd /tmp/$DB 2>/dev/null
for collection in $DATABASE_COLLECTIONS; do
mongoexport --host $HOST -u $USERNAME -p $PASSWORD -db $DB -c $collection --jsonArray -o $collection.json >/dev/null
done
pushd /tmp 2>/dev/null
tar -czf "$DB.tar.gz" $DB 2>/dev/null
popd 2>/dev/null
popd 2>/dev/null
mv /tmp/$DB.tar.gz ./ 2>/dev/null
rm -rf /tmp/$DB 2>/dev/null
fi

Answer 21

If you have this issue:
Failed: can't create session: could not connect to server: connection() : auth error: sasl conversation error: unable to authenticate using mechanism "SCRAM-SHA-1": (AuthenticationFailed) Authentication failed.
then add --authenticationDatabase admin
eg:
mongodump -h 192.168.20.30:27018 --authenticationDatabase admin -u dbAdmin -p dbPassword -d dbName -o path/to/folder

Answer 22

If you want to backup all the dbs on the server, without having the worry about that the dbs are called, use the following shell script:
#!/bin/sh
md=`which mongodump`
pidof=`which pidof`
mdi=`$pidof mongod`
dir='/var/backup/mongo'
if [ ! -z "$mdi" ]
then
if [ ! -d "$dir" ]
then
mkdir -p $dir
fi
$md --out $dir >/dev/null 2>&1
fi
This uses the mongodump utility, which will backup all DBs if none is specified.
You can put this in your cronjob, and it will only run if the mongod process is running. It will also create the backup directory if none exists.
Each DB backup is written to an individual directory, so you can restore individual DBs from the global dump.

Answer 23

I dump all collection on robo3t.
I run the command below on vagrant/homestead. It's work for me
mongodump --host localhost --port 27017 --db db_name --out db_path

Answer 24

Some of the options are now deprecated, in version 4.4.5 here is how I have done it
mongodump --archive="my-local-db" --db=my
mongorestore --archive="my-local-db" --nsFrom='my.*' --nsTo='mynew.*'
Read more about restore here: https://docs.mongodb.com/database-tools/mongorestore/

Answer 25

First, of Start the Mongo DB - for that go to the path as ->
C:\Program Files\MongoDB\Server\3.2\bin and click on the mongod.exe file to start MongoDB server.
Command in Windows to Export
Command to export MongoDB database in Windows from "remote-server" to the local machine in directory C:/Users/Desktop/temp-folder from the remote server with the internal IP address and port.
C:\> mongodump --host remote_ip_address:27017 --db <db-name> -o C:/Users/Desktop/temp-folder
Command in Windows to Import
Command to import MongoDB database in Windows to "remote-server" from local machine directory C:/Users/Desktop/temp-folder/db-dir
C:\> mongorestore --host=ip --port=27017 -d <db-name> C:/Users/Desktop/temp-folder/db-dir

Answer 26

This is the simplest technique to achieve your aim.
mongodump -d db_name -o path/filename.json

Answer 27

#mongodump using sh script
#!/bin/bash
TIMESTAMP=`date +%F-%H%M`
APP_NAME="folder_name"
BACKUPS_DIR="/xxxx/tst_file_bcup/$APP_NAME"
BACKUP_NAME="$APP_NAME-$TIMESTAMP"
/usr/bin/mongodump -h 127.0.0.1 -d <dbname> -o $BACKUPS_DIR/$APP_NAME/$BACKUP_NAME
tar -zcvf $BACKUPS_DIR/$BACKUP_NAME.tgz $BACKUPS_DIR/$APP_NAME/$BACKUP_NAME
rm -rf /home/wowza_analytics_bcup/wowza_analytics/wowza_analytics
### 7 days old backup delete automaticaly using given command
find /home/wowza_analytics_bcup/wowza_analytics/ -mindepth 1 -mtime +7 -delete

Answer 28

There are multiple options depending on what you want to do
1) If you want to export your database to another mongo database, you should use mongodump. This creates a folder of BSON files which have metadata that JSON wouldn't have.
mongodump
mongorestore --host mongodb1.example.net --port 37017 dump/
2) If you want to export your database into JSON you can use mongoexport except you have to do it one collection at a time (this is by design). However I think it's easiest to export the entire database with mongodump and then convert to JSON.
# -d is a valid option for both mongorestore and mongodump
mongodump -d <DATABASE_NAME>
for file in dump/*/*.bson; do bsondump $file > $file.json; done

Answer 29

Even in mongo version 4 there is no way to export all collections at once. Export the specified collection to the specified output file from a local MongoDB instance running on port 27017 you can do with the following command:
.\mongoexport.exe --db=xstaging --collection=products --out=c:/xstaging.products.json

Answer 30

Open the Connection
Start the server
open new Command prompt
Export:
mongo/bin> mongoexport -d webmitta -c domain -o domain-k.json
Import:
mongoimport -d dbname -c newCollecionname --file domain-k.json
Where
webmitta(db name)
domain(Collection Name)
domain-k.json(output file name)