I've got problem with running mongodb on wsl ubuntu.
During using powershell everything works fine. I type node db.js and its working. After switching terminal to ubuntu and run the same command i get an error: "MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017".
Any idea how to resolve this problem?
Try to check mongod service status via cli
use service mongod status to check
If it's not active then try to activate
use this sudo service mongod start
If mongod service is not found then try to install the mongodb
Related
i am a front stack dev trying to become full stack, been learning node and express and wanted to start with mongo, i went to the officlal mongodb page and followed the instruction to download mongo trough the cli in ubuntu 20.4
finished with the commands, i typed mongo in the command line and get this in mi cli
MongoDB shell version v4.4.4 connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: Connection refused : connect#src/mongo/shell/mongo.js:374:17 #(connect):2:6 exception: connect failed exiting with code 1
what is that? im new at this side of coding and feel a bit overwelm by this, i appreciate the help you would give me
i had a similiar issue this probably happened because you failed to start mongodb service before opening the mongo shell.
next time run the command
sudo systemctl start mongod
this helps to start the mongodb service
to check if the service is running successfully you can then run the command
sudo systemctl status mongod
after which you can proceed to run the command
mongo
to run the mongo shell. this hack only applies to ubuntu system.
I installed mongodb in VS code by npm install mongodb. And again I downloaded mongodb from official website and installed it as a windows service since I don't know if installing in vscode with npm is enough. It worked for a while.
and now it doesn't work as my database connection with mongoose fails and nothing is running in 27017 port in localhost. Seems like server stopped.
how to restart mongodb server? what's the CLI/terminal command etc for that?
On debian/ubuntu
sudo service mongod restart
Go to services via start button and check for the MongoDB services shown in below pic. And rest steps you can follow which #apoorva has mentioned.
Open a mongo shell and execute,
use admin
db.shutdownServer()
You may start again with mongod.
Learn more here, https://docs.mongodb.com/manual/tutorial/manage-mongodb-processes/#StartingandStoppingMongo-SendingshutdownServer%28%29messagefromthemongoshell
If You Installed MongoDB as a Windows Service
The MongoDB service is started upon successful installation.(please check on the below path)
To begin using MongoDB, connect a mongo.exe shell to the running MongoDB instance. Either:
From Windows Explorer/File Explorer, go to
C:\Program Files\MongoDB\Server\4.4\bin\ directory and double-click on mongo.exe.
Or, open a Command Interpreter with Administrative privileges and run:
"C:\Program Files\MongoDB\Server\4.4\bin\mongo.exe"
for more details check. : https://treehouse.github.io/installation-guides/windows/mongo-windows.html
Also, you first need to start the mongodb daemon for your connections to listen then you should connect using mongoose.
Have node server to a server application which is deployed on amazon ec2 instance with OS Ubuntu 18.04 LTS version, node- 12.18.3, mongoDB - 4.2.8, npm- 6.14.6 & pm2- 4.4.0.
The command service mongod status returns active(running status) now when pm2 status mongod command is executed it starts and both show online status running but when pm2 status command is executed node shows online status whereas mongod shows errored.
Have tried to make mongod --repair but still the problem persist.
What is the solution for this?
I've been following this tutorial to install Rocket.Chat on Ubuntu:
https://github.com/RocketChat/Rocket.Chat/wiki/Deploy-Rocket.Chat-without-docker
Everything looks good until I try to run the server with node main.js:
Error: failed to connect to [localhost:27017]
at Object.Future.wait (/home/gregoire/Rocket.Chat/programs/server/node_modules/fibers/future.js:398:15)
at new MongoConnection (packages/mongo/mongo_driver.js:213:1)
localhost could also be 127.0.0.1 or my IP address, it doesn't change anything. Sounds like an error coming from MongoDB.
So I tried to run with sudo and the error I'm getting is different:
Error: MONGO_URL must be set in environment
I follow the tutorial, this variable has been set using export:
export ROOT_URL=http://localhost/
export MONGO_URL=mongodb://localhost:27017/rocketchat
export PORT=80
EDIT:
I needed to start mongod to then run the main.js. But I also got an error:
mongodb failed to connect to 127.0.0.1
I made some research and found that I had a missing folder. I used this command to create it and then started mongod:
mkdir -p /data/db
It worked after that, but it's not implied in the tutorial. I'm currently repeating the setup on a server and I'm having the same problem: /data/db is missing.
Disclaimer: I work for Rocket.Chat.
Are you sure mongodb is running? Can you type mongo and see if you can get into a mongoDB shell? If it's running, can you please confirm it's running on port 27017?
You can also go to https://demo.rocket.chat and join #support channel or #dev, where you'll find quite a few developers willing to help you out.
I'm getting the following error when I try to run "mongod" in the terminal. I've tried uninstalling, reinstalling, and restarting the machine. Any suggestions on how to get it working would be amazing.
ERROR:
dbpath (/data/db) does not exist.
Create this directory or give existing directory in --dbpath.
See http://dochub.mongodb.org/core/startingandstoppingmongo
Side note:
Node also stopped working on my machine around the same time that I got this error.
events.js:72
throw er; // Unhandled 'error' event
^
Error: failed to connect to [localhost:27017]
Any help would be much appreciated!
This should work to ensure that the directory is set up in the right place so that Mongo can find it:
sudo mkdir -p /data/db/
sudo chown `id -u` /data/db
You need to create the directory on root /data/db or set any other path with the following command :
mongod --dbpath /srv/mongodb/
See the example link
I solved the problem with :
sudo mongod --dbpath=/var/lib/mongodb and then mongo to access the mongodb Shell.
Change the user of the new data directory:
chown mongodb [rute_directory]
And try another time to start the mongo service
service mongod start
I solve the same problem with this.
Daemons (usually ending with d) are normally started as services. Starting the service (daemon) will allow mongodb to work as designed (without permission changes if integrates well with your distro). I start it using the service named mongodb instead of starting mongod directly--on distro with systemd enable on startup then run like:
sudo systemctl enable mongodb
sudo systemctl start mongodb
or, on distro with upstart (if you have /etc/init) or init (if you have /etc/init.d) ( https://www.tecmint.com/systemd-replaces-init-in-linux/ ) instead run:
sudo service mongodb enable
sudo service mongodb start
If you have a distro with rc ("run commands") such as Gentoo (settings in /etc/init.d) (https://forums.gentoo.org/viewtopic-t-854138-start-0.html) run:
rc-update add mongodb default
/etc/init.d/mongodb start
In a distro/version of FreeBSD which still has rc (check whether your version switched to systemd, otherwise see below):
add the following line to /etc/rc.conf:
mongod_enable="YES"
then:
sudo service mongod start
After starting the service, an unpriveleged user can use mongo, and each user will have separate data.
I also got the error that "The file /data/db doesn't exist" when I tried to save my file using the "mkdir -p /data/db" command(using both with and without sudo command). But later on one site, a person named Emil answered that the path "/data/db" no longer works on Mac, so use "~/data/db" instead
i.e., use the command
mkdir -p ~/data/db
instead of previous command.
Moreover, use
mongod --dbpath ~/data/db
to run mongod
It worked for me, hope it work for others too facing the same problem