I am running a mongodb application to connect to azure cosmosdb running locally. I am running an already built flask app. Which port on my machine do I need to enable, to connect to the remote cosmosdb?
Anaconda environment: Python 3.6
MongoClient
replicaset is globaldb
ssl is True
My flask app gives the above error
Check this thread out: https://github.com/Azure/azure-cosmos-dotnet-v2/issues/256. Start by using /EnableMongoDbEndpoint flag and point it to 10250 port. It might work.
Related
I have created a PostgreSQL with a web server DOCKER CONTAINER and my app running with an API to manage all the endpoints.
The link of my git repo is: https://github.com/JulioValderrama/store-front-project.git
But I am facing problems with the connections with the Database, as depending on the Postgres HOST name value in my .env file one of the two servers (one local running in PORT 4000 and the web server running in the docker container in PORT 3000) will work or will fail.
I have tried the next:
Local server running in PORT 4000
Docker web server running in PORT 3000
HOST "127.0.0.1"
Going to¨:
http://localhost:3000/
Works fine and get response, now when trying to connect it to any of my database API:
http://localhost:3000/products
I get the error:
"Could not get PRODUCTS. Error: Error: connect ECONNREFUSED 127.0.0.1:5432"
Going to:
http://localhost:4000
Works fine and get response, now when trying to connect it to any of my database API:
http://localhost:4000/products
It works! I get the list of all my products!!
HOST "postgres"
I put "postgres" because I read online that you have to name HOST as the postgres docker image created, which is my case. And it works for the remote server.
Going to:
http://localhost:3000
Works fine and get response, then when trying to connect it to database API:
http://localhost:3000/products
It works!! It gives me the list of my products !!
Going to:
http://localhost:4000
Works fine and get response, then when trying to connect it to database API:
http://localhost:4000/products
It gives me the error:
"Could not get PRODUCTS. Error: Error: getaddrinfo ENOTFOUND postgres"
So it seems like there is an error when trying to connect to the database due to the server or the HOST name, I have no idea....
In docker-compose.yaml you have linked your machine 5432 to containers 5432 port.
If you are using docker container and want to reach postgres, use postgres as POSTGRES_HOST value.
If you are running application outside the docker environment use 0.0.0.0, 127.0.0.1.
Make sure you haven't installed postgres locally
brew uninstall postgres
i have setup wsl in my windows server machine and started the redis service there.
from the windows command prompt i can use wsl redis-cli and run the redis commands.
but my node application is not able to detect the redis inside wsl. i am using redis in my node project.
is there any third party module i need to add to able to connect, this answer showed to add it in python.
the wsl's redis port was readily available.
const client = redis.createClient(); just kept the createClient() config blank and it connected.
Description
I have a Node server and React App running on my notebook Ubuntu 18.04.
Notebook ip is 10.0.0.101
I tried to connect my desktop to this server on the same network
Desktop ip is 10.0.0.100
Node is running on PORT=3333
React is running on PORT=3000
I can ping my notebook from my desktop but when I try to connect to node using Insomnia or to http://10.0.0.101:3000 from my desktop I cannot reach.
Errors
When try to connect to backend with Insomnia
Error: Couldn't connect to server
When try to connect to app on 10.0.0.101:3000
ERR_CONNECTION_TIMED_OUT
What I've done
I already changed the node listen and specified the port and the ip but it didn't work.
I tried to use my phone as router and connect from my phone to react on my notebook and also didn't work.
I've tried so many things since I can't remember them all.
I'm also creating a react-native app and when I try to connect to my mobile using Expo, it just works using tunnel, but cannot get data from the backend.
Please save me.
Thanks
After making many failed attempts, I realized that the problem was in my notebook.
I checked my firewall and it was disabled and still cannot get acess to my notebook on LAN. But finally I discovered what have to be done
Solution
You have to open the specific port for TCP traffic
Ubuntu:
sudo ufw allow <PORT-NUMBER>/tcp
or for Red Hat Enterprise
firewall-cmd --add-port <PORT-NUMER>/tcp
Reference: Examples of how to open firewall ports
I use Robo 3T as a UI tool for MongoDB on a Windows 8 machine. Now I've deployed the DB to production on a Ubuntu 14 server in Amazon EC2 cloud. When I try to connect from the Windows machine to the Ubuntu one via Robo 3T, I receive the following error:
Cannot connect to the MongoDB at [http://12.345.678.90]:27017.
Error: No unix socket support on windows
Is that a problem I need to fix on my computer by installing something? or it's an issue of Mongo 3T?
If it's an issue on my Windows, what do I have to install in order to make it work?
If it's a Mongo 3T issue, do you know another UI that does support connecting from Windows to Ubuntu?
Perhaps an EC2 solution?
Or maybe some settings I need to change in Robo 3T?
I've tried changing "http" to "mongodb" to no avail. I've also tried removing the protocol prefix as suggested here but I ended up with the error:
Cannot connect to the MongoDB at 12.345.678.90:27017.
Error: Network is unreachable.
Do you have a bindIP setting in your mongo configuration file? Probably that can cause the error.
Either remove the bindIp configuration or allow your IP to access mongo server.
(restart your service after changes the configuration).
I created an Azure virtual machine with Ubuntu 14.04 LTS OS.
I installed a mean.io application version 0.3.3, on this virtual machine, with nginx that proxy the requests in the http port 3000 over the port 80.
I opened one endpoint in azure portal, for the TCP protocol on private port 3000 and public port 80.
I installed the latest version of node on Azure VM.
The database (mongoDB) is hosted on compose.io.
With pm2 (https://www.npmjs.org/package/pm2) I created a daemon that run the application.
All apparently works fine: the cpu was with no load and the memory was empty (only 100MB).
But after a period, node.js cannot process the request.
I have tried to do a 'curl' in localhost 3000 but i dont have any response.
The problem persists only in Azure VM: I tried the same application, with the same configuration, on my dev machine (ubuntu 14.04 desktop), and on Digital Ocean (another distro of ubuntu 14.04 server) and all works fine without problem.
Can you help me to find the problem?
I have tried to dockerize all infrasctructure, in the same machine (a CoreOS vm on azure):
1 container with mean app,
1 container with MongoDB,
the problem still persisted!!!
finally, i have found the solution: keep the connection to MongoDB alive.
i have modified the server.js file from the mean app in this mode:
var options = {
server: {
socketOptions: { keepAlive: 1 }
}
};
var db = mongoose.connect(config.db, options);
In this mode the connection still alive and the problem was solved.