I wrote a node web app and created a mongoDb database on my local system. I was using the following code to connect to local mongodb from node js
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/db_name'); //local
And everything was working fine on my local machine. So I went on and created an mlab account and created a database. But when I tried to run the code by changing the connection string, connections are still established I believe. But the find and save requests are not invoking the callbacks, even no errors shows up. All requests are getting timed out.
var mongoose = require('mongoose');
mongoose.connect("mongodb://user:pass#ds036789.mlab.com:36789/db_name"); //mlab
Another thing I noticed is that I cannot ping ds036789.mlab.com. But TCP connections are succeeding when I tried the nc command
nc -w 3 -v ds036789.mlab.com 36789
I even tried deploying to azure. Which doesn't work either. Any help is much appreciated. Thanks.
EDIT:
Not being able to ping was due to the fact that I used azure hosting. It is expected. And I also found out that I get this error while trying to connect :
connection error: { [MongoError: auth failed] name: 'MongoError', ok: 0, errmsg: 'auth failed', code: 18 }
Credentials are correct though.
From the error mesasge it seems like you are using invalid auth details
This is most likely happen when you do not create username and password for individual database i.e, db_name in you case.
Check mLabs account and create username and password for db_name database and update your connection string.
According to the error information, as #Astro said, it seems to be caused by using invalid auth user/password which be created for database.
Did you create a new user for connecting the database, not account user for mlab? Such as the figures below shown.
Fig 1. A database user is required for connecting
Fig 2. Users list for the database
Hope it helps.
I figured out the issue, it wasn't an issue with the credentials. It was an issue with the mongoose version. The mongoose version I used didn't support the authentication. I had to remove the package and reinstall the latest version. with
node install mongoose#latest
Hope it helps someone. And thanks for the answers :)
Related
When I try to connect to Mongo instance using this connection string
mongodb://root:password#localhost:27017/
everything works, however, when I try to specify the database name in the connection string
i.e
mongodb://root:password#localhost:27017/storefont
I get the following error MongoDB Connection Error: MongoNetworkError: failed to connect to server [localhost:27017] on first connect [MongoError: Authentication failed.
Specify the authentication database like this:
mongodb://root:password#localhost:27017/storefont?authSource=admin
If you specify a database then this database is also taken for authentication by default. The MongoDB documentation is not 100% clear in that topic.
See also Authentication failure while trying to save to mongodb
The answer provided by Wernfield is correct. I am providing a small tweak along with an example to connect to a replica set:
When using the authSource query param, please ensure that the connection string is wrapped in single quotes OR just use --authenticationDatabase argument instead,
mongo mongodb://ip1:27017,ip2:27017,ip3:27017/my-db --authenticationDatabase admin -u myUsername -p myPassword
I am trying to export data from a mongodb cluster to my computer, using my URI connection string, but am getting the error: could not connect to server: connection() : auth error: sasl conversation error: unable to authenticate using mechanism "SCRAM-S HA-1": (AtlasError) bad auth Authentication failed
This is the command I am using:
mongoexport --uri="mongodb+srv://yash_verma:<******>#jspsych-eymdu.mongodb.net/test?retryWrites=true&w=majority" --collection=entries --out=entries.csv
Could anyone tell me what it is that I am doing wrong? I am sure I am using the correct password.
I am also fairly new to programming and have tried to look online for a solution, but haven't found one yet.
Any help would be greatly appreciated.
Thanks,
Yash.
Your connection string looks fine, but make sure to remove the angle brackets (<>) around <password>, like so:
mongoexport --uri="mongodb+srv://yash_verma:******#jspsych-eymdu.mongodb.net/test?retryWrites=true&w=majority" --collection=entries --out=entries.csv
…where ****** is the database password (not the account password!) of the database user yash_verma.
Duplicate answer
I am using mongoose version 4.13.6 and mongodb from compose, and below is my code for connecting to mongo database.
mongoose.createConnection('mongodb://[user]:[pass]#[host1]:[port1],[host2]:[port2]/dbnamme?ssl=true', {});
But when I run this am getting error,
MongoError: no primary found in replicaset
Dont know why is that, can anyone help me in this?
So the short answer is this:
... all drivers are not equal and some make assumptions when multiple hosts are specified. For example, the Meteor/Node.js MongoDB driver sees two hosts and assumes it is talking to a replicaset. Upon connecting the driver asks which host is master and then errors out because neither of them are. The simple fix for this is to use one host in the URI ..
https://www.compose.com/articles/connecting-to-the-new-mongodb-at-compose/#drivingtoyourfirstdatabase
So when you create a connection, simply use one of the connection URIs for the database you want to connect to like:
var uri = "mongodb://<username>:<password>#[host]:[port]/<db_name>?ssl=true";
mongoose.createConnection(uri);
i am trying to connect to my mongo database with following connection string
var Mongo_url = 'mongodb://MyUSer:tech#localhost:27017/chatme?authSource=admin';
I am getting error as
assertionError: null == { [MongoError: Authentication failed.]
name: 'MongoError',
message: 'Authentication failed.',
ok: 0,
code: 18,
Could anyone please clear this "authSource=admin" thing to me.
This is the name of the database that has the collection with the user credentials.
https://docs.mongodb.com/manual/reference/connection-string/#connections-connection-options
This is where the usernames and passwords are set up.
I spent a few hours today trying to solve this problem and unfortunately, this SO post didn't appear in my searches. That was too bad because it's the post with the best answer to the problem.
I hope to help the next person by adding the error message I got.
I'm setting up the connection inside a Docker container that is spun up via a docker-compose yaml file. The user name and password are passed into docker-compose from a .env file.
Connection URI that works
mongodb://aUser:aPassword#mevn-app-mongo:27017/myDb?authSource=admin
Error:
SASL SCRAM-SHA-1 authentication failed for aUser on myDb from client 172.25.0.3:37352 ; UserNotFound: Could not find user aUser#myDb
I'm using node.js with mongoose which cannot connect to the DB failing with authentication issue.
Using the connection env variable uri:
:mongodb://root:***#[appname]-[user]-db-0.azva.dotcloud.net:4518
And the result is:
{ [MongoError: auth fails] name: 'MongoError', errmsg: 'auth fails', ok: 0 }
Tried to build up own conn URI based on the environment variables like DOTCLOUD_DB_MONGODB_HOST etc, the URI is correct, passing to the env variable but the problem is still this based on the DB logs:
db.0 Sat Dec 29 00:31:08 [conn66] auth: couldn't find user root, admin.system.users
Could anyone help me how to resolve this missing user root?
Thank you in advance!!!
update: I logged in to mongodb console on the mongodb node via "use admin" and cannot authenticate with that username and password either. Nor create a new user and password. :(
Resolved.
The dotcloud system has provisioned the db instance badly somehow.
Creating a new app, everything is working fine.