I have a redis server which is working fine in my local but in ubuntu server is not working can someone gives the comment for installing redis in server
it is not working even with docker it is working only while i am running in local
const redis=require('redis');
var redisClient:any;
(async () => {
try {
redisClient = redis.createClient({ socket: { port: 6379 } });
await redisClient.connect();
// const redisClient = redis.createClient({
// port:"6379",
// host:'redis-service'
// });
redisClient.on('connect',()=>{
console.log('server connected to redis')
})
redisClient.on('ready',()=>{
console.log('Client Connect to redis and ready to use')
})
redisClient.on('error',(err:any)=>{
console.log(err)
})
redisClient.on('end',()=>{
console.log('Server disconnected from redis')
})
process.on('SIGINT',()=>{
redisClient.quit()
})
console.log('connected');
} catch (err) {
console.error(err)
}
})()
export{
redisClient
};
Make sure that Redis is not already running on the server. You can check this by running the command ps aux | grep redis. If Redis is running, you should see a line with the redis-server process.
Confirm that Redis is properly installed on your server by running redis-cli ping. If Redis is installed and running, it should return "PONG"
Check the Redis configuration file (redis.conf) and ensure that the IP and port settings match the settings on your local machine.
Make sure that the Redis server has the necessary permissions to access its data directory and that the correct ownership and permissions are set on its files.
Verify that the firewall rules on the server allow incoming connections on the Redis port (usually 6379)
Check for any compatibility issues between the version of Redis that you're running on your local machine and the version of Redis that's running on the Ubuntu server. If there's a version mismatch, it may be necessary to upgrade or downgrade one of the installations.
Try to run the Redis server with verbose output by running the command redis-server -v, this can give you some more information about the errors that are causing the server to fail.
Look at Redis log files, usually located in /var/log/redis for further clues about the cause of the problem.
I am trying to run an Express server that would communicate with a local MongoDB instance. Everything runs on Ubuntu 18.04.5 on DigitalOcean.
I managed to set up the database, the authentication is made, but then after a few seconds the connection closes due to some mongodb dependencies (I think).
This is how I make the connection:
const httpsServer = https.createServer(credentials, app);
const mongooseConnection = mongoose
.createConnection(
`mongodb://user:pass#127.0.0.1:27017/Database?retryWrites=true&w=majority`,
{ useNewUrlParser: true, useUnifiedTopology: true }
);
mongooseConnection.on('error', console.error.bind(console, 'Connection error: '));
mongooseConnection.once('open', () => {
console.log("Connected to the DB");
httpsServer.listen(securePort, () => {
console.log(`Secure Express server listening on port ${securePort}`);
});
});
Node console:
Mongod:
Couldn't find much about this error. Most of what I've found is related to the MongoDB Atlas cloud service, but this is a local MongoDB instance. The common solution for when the connection closes like this seems to be whitelisting the IP. I think this is not the case as everything is local and I have nothing to do with the Atlas/Cluster.
I tried removing the node modules and updating them. I tried disabling cors and helmet. I'm stuck
I have that code:
var express = require('express'),
stylus = require('stylus'),
logger = require('morgan'),
bodyParser = require('body-parser'),
mongoose = require('mongoose');
var env = process.env.NODE_ENV = process.env.NODE_ENV || 'development';
var app = express();
function compile(str, path){
return stylus(str).set('filename', path);
}
app.set('views', __dirname + '/server/views');
app.set('view engine', 'jade');
app.use(logger('dev'));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(stylus.middleware(
{
src: __dirname + '/public',
compile: compile
}
));
app.use(express.static(__dirname + '/public'));
mongoose.connect('mongodb://localhost/multivision');
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error..'));
db.once('open', function callback(){
console.log('multivision db opened');
});
app.get('/partials/:partialPath', function(req, res){
res.render('partials/' + req.params.partialPath);
});
app.get('*', function(req, res) {
res.render('index');
});
var port = 3131;
app.listen(port);
console.log('Listening on port ' + port + '...');
but when I'm trying nodemon server.js it throws an error:
connection error.. { [MongoError: connect ECONNREFUSED
127.0.0.1:27017] name: 'MongoError' message: 'connect ECONNREFUSED 127.0.0.1:27017' }
how can I improve that? I've already installed mongoose using npm install mongoose --save in my directory
Yeah there are dozens question like this but none of these helped me.. I'm new at nodejs and probably missing something
I was also facing the same issue, when I was executing node server on my project directory. For me the MongoDB service was not started, that makes this issue.
So I had to run services.msc and activated the service.
After that I was able to run my command.
D:\SVenu\MyApp>node server
Saving User
App is listening on port: 3000
Already Exist
Already Exist
Already Exist
Already Exist
Done save
run services.msc and activate the Mongodb service.
Now Mongodb will connect
the status of the Mongodb indicated as Running
Your mongodb service is probably down.
Run sudo service mongod start to start the daemon process
I was having the same problem, and found that it was a mongod issue.(I am running Ubuntu 16.04). Looking through the errors there was a directory missing. After adding the directory, I needed to change permissions, and finally, set the mongod service to start at boot.
$ sudo mkdir -p /data/db
$ sudo chown -R $USER /data/db
$ sudo systemctl enable mongod.service
I know this issue is old, but i came across a similar issue and the above solutions did not work for me, I'm using Ubuntu 20.04 LTS.
What i did to make it work was just running mongo service using this command:
$ mongod
Then everything worked fine
If you're in windows and you had this issue,
just go the installer exe app for the mongodb
and click "Repair"
this works for me
try this:
mongod.exe --dbpath c:\data\db
c:\data\db is the place where you put your db.
and when you see something like this :
2016-08-18T10:22:31.020+0800 I CONTROL [main] Hotfix KB2731284 or later update is not installed, will zero-out data files
2016-08-18T10:22:31.022+0800 I CONTROL [initandlisten] MongoDB starting : pid=4356 port=27017 dbpath=c:\data\db 64-bit host=sevencai-PC0
2016-08-18T10:22:31.022+0800 I CONTROL [initandlisten] targetMinOS: Windows 7/Windows Server 2008 R2
2016-08-18T10:22:31.023+0800 I CONTROL [initandlisten] db version v3.2.8
2016-08-18T10:22:31.023+0800 I CONTROL [initandlisten] git version: ed70e33130c977bda0024c125b56d159573dbaf0
......
and then node yourserver.js
maybe everything will be fine!
Follow as below:
=> run services.msc and start mondodb server
and save the file in node project, you can see the server connected!!
In Most of the case you will get the error bcz the service MongoDB Database Server (MongoDB) Might be stopped.
Just start the service to be connected with DB
it's doesn't work as localhost but IP address works 127.0.0.1 and solves this problem:
// .connect("mongodb://localhost:27017/lofydb")
const mongoose = require("mongoose");
mongoose.connect("mongodb://127.0.0.1:27017/lofydb")
// .connect("mongodb://127.0.0.1:27017")
.then(() => {
console.log("Connected to Database");
})
.catch((err) => {
console.log("Not Connected to Database ERROR! ", err);
});
please check the MongoDB service is active and running.
Refer the running services
If it is running and available on MongoDB compass or on MongoDB shell and if you are working with node version >17.0.0 or so it will give error.
So plz change to the stable version of node.
Make sure MongdoDB is running
To run MongoDB as a macOS service, run:
brew services start mongodb-community#5.0
And when you see:
==> Successfully started mongodb-community (label:
homebrew.mxcl.mongodb-commu
OR type on command line, to check the mongo service.
mongod
After run service, You can easily connect with mongdoDB localhost or remote connection.
I had the same issue and it had to do with the fact that my MongoDB service wasn't running locally. Make sure you followed all the correct installation steps for whatever OS you are trying to run MongoDB service here: https://www.mongodb.com/docs/manual/administration/install-community/
Then follow the respective guide for the running the service under "Run MongoDB Community Edition". So for example, for macOS you would do
brew services start mongodb-community#6.0
if you wanted to run as a macOS service, or
mongod --config /opt/homebrew/etc/mongod.conf --fork
if you wanted to run manually as a background service on Apple M1 processor. The same page I shared above also has commands you can run for verifying if your MongoDB process is running.
Step 1: open conf file to edit.
sudo vim /etc/mongod.conf
Step 2: find port and change it.
net: port: 27017 -> default port before any change
After changing port, my issue solved :
I was trying to connect my mongodb with node server using command prompt.
I started mongodb my mongod --dbpath E:\node start\node\data
Then I installed mongodb dependencies using npm install mongodb
I added some code into my app.js which is described below :
app.js
var mongodb = require('mongodb'); //acquiring mongodb native drivers
var mongoClient = mongodb.MongoClient;
var url = 'mongodb://localhost:7000/myDatabase'; //connection url
mongoClient.connect(url, function(err,db){
if(err){
console.log('Unable to connect to mongodb server. Error :' , err);
}
else{
console.log('Connection established to', url);
db.close();
}
});
when I ran app.js in command prompt, following error occured :
Unable to connect to mongodb server. Error :{[ MongoError : connect ECONNREFUSED] name : 'MongoError' , message: 'connect ECONNREFUSED' }
I cannot understand what the problem is and what should I do next.
MongoDB usually runs on port 27017, but you're trying to connect to port 7000. Try changing your url variable.
var url = 'mongodb://localhost:27017/myDatabase';
You know mongoDB has their default port no 27017.
And You have written 7000.
So Try to Change port no to 27017.
ok !!!!!!!
The error says you do not have mongodb running. You should check if your mongodb is running or not. If its running then you should check on what port it is running on.
The default port for mongodb is 27017. If you have not configured your mongodb to run on port 7000 then changing var url = 'mongodb://localhost:7000/myDatabase'; to var url = 'mongodb://localhost:27017/myDatabase'; will work for you.
I have a problem with the connection database MongoDB in Cloud9
Please help to resolve this issue!
var MongoClient = require("mongodb").MongoClient;
var port = process.env.PORT;
var ip = process.env.IP;
MongoClient.connect("mongodb://"+ip+":"+port+"/test",function(error,db){
if(!error){
console.log("We are connected");
}
else{
console.dir(error); //failed to connect to [127.4.68.129:8080]
}
});
Output:
Running Node Process
Your code is running at 'http://demo-project.alfared1991.c9.io'.
Important: use 'process.env.PORT' as the port and 'process.env.IP' as the host in your scripts!
[Error: failed to connect to [127.4.68.129:8080]]
If you follow https://docs.c9.io/setting_up_mongodb.html this link, you will setup and run your mongodb daemon under your workspace.
And if you take a look at the output of ./mongod, you'll find out this output:
2015-08-22T12:46:47.120+0000 [initandlisten] MongoDB starting : pid=7699 port=27017 dbpath=data 64-bit host=velvetdeth-express-example-1804858
Just copy the host and port value to your mongodb config, set up the database url, in this case is:
mongodb://velvetdeth-express-example-1804858:27017
process.env.PORT and process.env.IP are the port and IP address for your application, not your database. You'll want to pull your Mongo connection string from your MongoDB provider.
Below is the hello world example from the Node.js homepage modified to use the two environment variables.
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(process.env.PORT || 1337, process.env.IP || '127.0.0.1');
For anyone else who runs into this issue, the solution is here: https://docs.c9.io/setting_up_mongodb.html
MongoDB is preinstalled in the Cloud9 workspace. Run this:
$ mkdir data
$ echo 'mongod --bind_ip=$IP --dbpath=data --nojournal --rest "$#"' > mongod
$ chmod a+x mongod
To start the Mongodb process, run:
$ ./mongod
Then 'run' your node.js app script and you're off to the races.
Here's what the parameters mean:
--dbpath=data (because it defaults to /var/db which isn't accessible)
--nojournal because mongodb usually pre-allocates 2 GB journal file (which exceeds Cloud9 disk space quota)
--bind_ip=$IP (because you can't bind to 0.0.0.0)
--rest runs on default port 28017