I was using MongoDB on localhost of my Ubuntu (just for education purpose), but now, I have a new computer. So, I would like to have this collection on my new PC. What files do I need to copy to do this after installing MongoDB on a new machine ?
Thank you.
First you must read mongo backup and restore this documentation explain how to backup your data base and restore.
Now you should follow this steps :
1> From your old Ubuntu systems takes back up of your DB using following command
mongodump --host DB name --port 27017 --out /path to save your files
this command write data in BSON format, if you want to take only some collections from your DB then use mongodump --collection your collection name --db DB name
2> Now copy all above BSON files to your new PC and use following command to restore your old Ubuntu systems DB.
mongorestore --port <port number> <path to the backup>
before running this command you must install mongoDB.
Related
To create a backup of my mongo database, I am trying mongodump from my meteor console. The command successfully completes, but creates an empty folder under the dump folder. I use the command
mongodump -h 127.0.0.1 --port 3001 -d meteor
So basically I am trying to backup my database for reactionecommerce. My question is how to backup a meteor mongodb that is running locally? Thanks for any guidance of help.
The issue was with the mongo version 2.6.10. I installed the latest 3.4.4 in my Ubuntu 64 machine following the instructions https://docs.mongodb.com/master/tutorial/install-mongodb-on-ubuntu/ Now I am able to dump the data without any problem.
I am trying to host my database online and based on what I have found online, I need to use mongodump to export my database first.
The way to use mongodump if am not wrong is:
mongodump -d <db-name> -o <directory>
when I use the above command, I get the following error in the terminal:
Failed: error connecting to db server: no reachable servers
I tried to add --host=127.0.0.1 after mongodump as follows:
mongodump --host=127.0.0.1 -d <db-name> -o <directory>
But I still get the same result. What am I doing wrong here?
Update:
I managed to overcome the error by starting the MongoDB service with the following command:
brew services start mongodb
Now when I run mongodump, it seems to be working but I can't find it when I navigate to the directory where it supposed to be located!
NOTE: I am using Meteor technology, and I am accessing my database with meteor mongo command
If you are doing mongodump from a remote server it can happen that versions are incompatible. This results in no documents being dump without any warnings. (At least from my tests, mongodump 2.6.10 won't be able to dump from mongod 3.2.13)
Also, make sure bash special characters are not breaking up your query.
Example:
mongodump --db DB_name --collection colname --query "{$or: [something1, something]}"
The previous query won't work as you need to escape the $ with \.
mongodump --db DB_name --collection colname --query "{\$or: [something1, something]}"
You could try:
Run mongodump --db <database> --port 3001 from the directory you want the output files to be created (it will create a dump dir with the files)
The port is 3001, as it seems meteor doesn't use Mongodb default port
Also, if nothing appears, try running with the -v flag for verbose mode, this will help you to find out why your files are not being created. Also, be sure yout database name is correct.
I want to migrate my mongodb from 2.0 to 3.0. So I followed the official doc to use mongodump to backup my dbs and use mongorestore to restore the dbs to mongodb 3.0.
But when I use mongorestore, it tells me "don't know what to do with file "db/collection.bson", skipping...".
Nothing to do. How could I migrate my dbs?
Thanks.
EDIT: Here is my steps.
Use mongodump in mongodb 2.0
mongodump
tree dump
db
├── collection-1.bson
├── collection-2.bson
├── collection-3.bson
├── ...
Copy db directory to mongodb 3.0 server.
On the mongodb 3.0 server calls mongorestore db
But I get this error:
mongorestore db
2015-03-10T09:36:26.237+0800 building a list of dbs and collections to restore from db dir
2015-03-10T09:36:26.237+0800 don't know what to do with file "db/collection-1.bson", skipping...
2015-03-10T09:36:26.237+0800 don't know what to do with file "db/collection-2.bson", skipping...
2015-03-10T09:36:26.237+0800 don't know what to do with file "db/collection-3.bson", skipping...
...
2015-03-10T09:36:26.237+0800 done
It seems one must also specify -d in 3.0 like this:
mongorestore -d db db
This answer isn't directly related to your issue case, but the same error output you will receive trying to restore mongo data, dumped with --archive option, available since MongoDB 3.2 version. To resolve this you need to specify --gzip parameter in your mongorestore command. Example:
mongorestore -d destination_db --gzip /path/to/source/db
If you have lost your mongoDb just try running this command:
mongorestore -d destination-db --gzip source-db
Where:
destination-db is the name of the destination database
source-db is the name of the source database.
Following command worked for me in mongoDB 6.0 -
mongorestore --host localhost --port 27017 --db DB-NAME DB-BACKUP-PATH
Please replace DB-NAME and DB-BACKUP-PATH with your actual values. For ex.
mongorestore --host localhost --port 27017 --db demo_db /home/ubuntu/db-backup
Where "/home/ubuntu/db-backup" contains all collections in bson and json format.
Try this one.
mongorestore -db dataBaseName dataBasePath
In order to import data to your mongodb ,You need to specify --db configuration in mongorestore function with name and path, this works for me for bson and json files as well:
mongorestore --db <dbName> <dbPath>
check the data was imported properly using mongo cli
mongo
show databases
use <dbName>
show collections
With mongorestore, the path of those dump files is a required parameter; you've got that right so far, by indicating db.
It is also a good idea as Peter has said to indicate a database to restore the dump files into collections with a /d switch.
Something I didn't realize while struggling with this is that a mongod must be running to consume the restoration. If you have more than 1 mongod running, you should definitely indicate a port with the --port switch. The code that worked for me was:
mongod --dbpath config --port 27019 --logpath log.config --logappend
And in another CLI:
mongorestore --port 27019 /d config config
followed by
mongo localhost:27019/config
to verify that the collections were filled properly.
You want to run mongorestore on the dump directory, not the db/ directory.
mongorestore dump/
Please Follow these intstructions it worked for me
First go to command prompt .
run cd C:\Program Files\MongoDB\Server\3.0\bin .
now ,For suppose your data is in a folder called trading and it contains json files .
and the path for that might be c:\Users\documents\trading.
(mongorestore -d dbName dbPath).
now run mongorestore -d trading c:\Users\documents\trading.
your files will be restored.
Not directly related to your situation but someone could stumble upon this post with similar error for this reason
In my case, the data was provided to me and had been dumped using
mongodump --db ${DB_NAME} --gzip -o ${BACKUP_FILE_GZ}
To restore, you must use following format:
mongorestore --gzip --db "${DB_NAME_RESTORE}" ${BACKUP_FILE_GZ}/${DB_NAME}
mongorestore --uri "mongodb+srv://<user>:<password>#<host>" -d <dbname> <dump dir. address ./something/like/this>
This work fine for me
I used docker to start my mongo db instance & I had default username and password
auth set for database.
Below is how my restore looked like.
mongorestore --authenticationDatabase admin -u root -p example -d test-db /data/test-db
So in-short something of this sort should work.
mongorestore --authenticationDatabase admin -u {USERNAME} -p {PASSWORD} -d {DB_NAME} {/DUMP_PATH}
I have two mongodbs, one is on my server and another is on my laptop.
how do I sync from server to local once a day? What is python code to do it?
You can do a mongodump from the server to your laptop and then run mongorestore on your laptop to sync the data. How frequently you want to do this depends on how big your dataset is and if you have the bandwidth for it. You could try the following steps and see if they work for you.
To backup:
From your laptop's Terminal, assuming you have Linux or Mac OSX, run the following commands (the Windows commands are very similar):
$ mongodump --host <HOST> --authenticationDatabase admin -u <USER> --password <PW>
If you don't have authentication set up, then you can omit the authentication and credentials information. So the command would look something like this:
$ mongodump --host <HOST>
To restore:
This will create a dump folder in your current directory containing the backup. Then when you want to restore you would run the following. You can omit the --drop flag if you don't want to drop the databases before restoring.
$ mongorestore --drop
Try these commands and if they work for you, you can write up a shell script which you can run daily in order to sync your database. Also, if your dataset is big enough and you want to be super precise about syncing your data, you can run the mongodump with the --oplog option. This means that the dump will include a partial oplog containing operations from the duration of the mongodump operation. Then to restore you run mongorestore with the --oplogReplay flag. This will ensure that any operations that occurred during the dump will also be backed up.
For more information, you should check out the mongodump and mongorestore pages in the documentation.
I have a MongoDB database that resides on a remote server machine whose IP address is 192.168.1.20 on a local network. For development and testing purposes, and since I am not allowed to modify or delete the database on the server for security purposes, I want to copy the database on my local machine for my personal use.
Can anyone please tell me, how do I achieve this?
I do this by creating a dump of the remote db to my local machine, which I then restore:
Make sure you have a mongo instance up and running (eg. run mongod.exe from your bin folder in a terminal window. On my windows computer that's C:\mongodb\bin)
Make a dump from remote db: Open a new terminal window, move to the bin folder again, run:
mongodump -h example.host.com --port 21018 -d dbname --username username --password yourpass
(Change the parameters to suit your own situation.)
Restore the dumped database: Once the dump has been made, run the following command so that you have a local db:
mongorestore -d theNameYouWantForYourLocalDB dump\nameOfRemoteDB
(replace nameOfRemoteDB with the name of the remote db, the same as in previous command, and replace theNameYouWantForYourLocalDB with the name that you want your new local db to have)
There is copy database command which I guess should be good fit for your need.
db.copyDatabase("DATABASENAME", "DATABASENAME", "localhost:27018");
Alternatively, you can just stop MongoDb, copy the database files to another server and run an instance of MongoDb there.
EDIT 2020-04-25
Quote from MongoDB documentation
MongoDB 4.0 deprecates the copydb and the clone commands and their mongo shell helpers db.copyDatabase() and db.cloneDatabase().
As alternatives, users can use mongodump and mongorestore (with the mongorestore options --nsFrom and --nsTo) or write a script using the drivers.
Reference here
This should be a comment to the answer of #malla, but I don't have enough reputation to comment so I'm posting it here for other's reference.
In step 2, When you are trying to dump file from a remote server, remember to add out option so that you can restore locally later: (in my first try, I didn't add it and it failed, saying dump\db_name was not found).I'm not sure whether my way efficient or not. But it worked for me.
Step 2:
mongodump -h example.host.com --port 21018 -d dbname --username username --password yourpass --out <path_you_want_to_dump>
Step 3:
mongorestore -d theNameYouWantForYourLocalDB \<path_you_want_to_dump> + nameOfRemoteDB
The mongoexport command:
http://docs.mongodb.org/manual/core/import-export/
Or, mongodump command:
http://docs.mongodb.org/manual/reference/program/mongodump/
mongodb has commandline tools for importing and exporting. Take a look at mongodump --collection collection --db test and mongorestore --collection people --db accounts dump/accounts/
http://docs.mongodb.org/v2.2/reference/mongodump/
http://docs.mongodb.org/v2.2/reference/mongorestore/
this even works over the network
You can use the mongoexport command to copy the database to your local machine.