Question
Flask app mysteriously shuts off...
- Posted on December 18, 2023
- DigitalOcean Droplets
Asked by Tyler
Hello. I created a flask app in a digital ocean droplet. I ran the Python script and made sure it was working, then I closed the terminal. The script should run forever, but I woke up this morning to complaints from a customer saying the flask app is down. I logged into my droplet and ran the script again and everything is working now, but I am worried that this will happen again. Is there a maximum execution time for Python scripts on a droplet? How can I make sure my script is always running?
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Heya @tylersquid,
How are you running your Flask app? Maybe you should look into a process manager like pm2 which restarts your Program on failure or Gunicorn.
It’s possible your Droplet killed your application due to a lack of resources as well.
Here is the article on how to configure Gunicorn with your App:
https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-gunicorn-and-nginx-on-ubuntu-22-04
Alternatively, as mentioned you can use pm2.
Install PM2: If you haven’t installed PM2 yet, you can do so using npm (Node Package Manager). Make sure you have Node.js installed first.
Start Your Flask App with PM2: Use PM2 to start and manage your Flask app:
Replace
"your-app-name"with a suitable name for your application. Replace""Command you run to start your Flask APp"with a the command you use to run the application.Save the PM2 Process List: Save the current process list to ensure PM2 restarts your app after a system reboot:
Monitor and Manage: You can monitor your app’s logs, restart it, or stop it using PM2 commands:
pm2 logspm2 restart your-app-namepm2 stop your-app-name