arbiter | Subscription/Events | Pub Sub library

Im working on a sample flask app (running ok) and i want to dockerize it. Porject structure is:

Environment vars:
export FLASK_APP=api/app.py
export FLASK_ENV=development

Directory:

Dokerfile api/

• app.py
• __ init __.py (empty)
• config.py
• requirements.txy (flask, gunicorn)

api.py

So, I am building a small URL shortener project with js, express, and MongoDB but, I got errors when I'm trying to run my local server and I can't connect to MongoDB! This is my code:

Disclaimer: Similar topics did not offer a valid solution for my problem!

• Restarted MongoDB server (it keeps running when error occurs)
• Using MongoDB server on windows as a service (started it manually)
• Established the connection via MongoDB Shell CLI Package by hitting enter in the comand prompt to establish the default connection (mongodb://127.0.0.1:27017/directConnection=true&serverSelectionTimeoutMS=2000 )
• Called npm install and npm start (my dependencies are listed below)
• Checked that MongoDB is running
• Checked via the windows resource monitor that the port 27017 is occupied by mongod.exe using TCP and is not restricted by the firewall
• Checked that I am not using a VPN nor a proxy connection that could interfere.
• Then I opened http://localhost:3000/ to which I am listening (app.listen(3000);)

However, I still get the following error:

Every time I run npm start in my backend folder, my server runs successfully for a short time and then soon after crashes. I'm getting this error back from the command line:

I am trying to start my heroku app with a python flask app, but I am getting the h10 error and the only thing I can see in the log is the Tkinter not found but I am not using Tkinter in this project please help. I've been searching on the web and on other stack overflow questions, but most just say to make sure you don't declare a port or some js server thing. I haven't found anything that helps and when I read the log all I see is the Tkinter but I tried to purge it from my code but it still tries to call it.

It has been very difficult for me trying to deploy to aws EC2 ubuntu server SINCE I'm coming from windows background. I encounter an error while trying to bind django application to gunicorn. The command I'm running is sudo gunicorn --bind 0.0.0.0:8000 logistics.wsgi:application And the error log is show below:

I've been struggling with an ostensibly simple error while trying to deploy a Flask app on AWS Elastic Beanstalk for quite some time now. Launching the app gives a 502 Bad Gateway error. The traceback in the logs reads:

We are running a MongoDB database in HA mode on our k8s cluster. Our helm chart defines three replicas (with persitence: enabled: false) and one arbiter.

Since 3 replicas + 1 arbiter is an evil even number, I would love to know if the arbiter only comes into play when one replica goes down to ensure an odd number of electors to determine the new primary node, or is using an arbiter wrong when having defined an odd number of replicas?

I have deployed bitnami's Mongodb helm chart in the replicaset mode on a K8s cluster, using this minimal config (for now):