uWSGI Python Application Server

This is a repackaged open source software product wherein additional charges apply for cloudimg support services.

## uWSGI - Production-Ready Python Application Server AMI with 24/7 Expert Support

Launch a fully configured uWSGI application server on EC2 and begin serving Python WSGI web applications within minutes. uWSGI is a mature, production-grade application server that runs your app in a supervised pool of worker processes: it load balances requests across workers, restarts crashed workers automatically, and exposes a live stats interface for worker health and request load. Running in Emperor mode it hosts one or many apps on a single node, each as an isolated vassal, with nginx as the front door over a fast unix socket.

uWSGI is infrastructure, not a finished end-user application. This AMI gives you a wired-up, hardened application server that you drop your own WSGI/Python app into - it does not ship a turnkey app. A tiny Python WSGI demo app is included purely as a health and example endpoint so you can confirm the server the moment the instance boots.

## Why This AMI Over a Manual Install

• Instant time-to-value: nginx fronts uWSGI over a unix socket the moment your instance boots - no source build, no Emperor/vassal wiring, no socket-permission debugging.
• A real, proven server: uWSGI 2.0.31 is built from the official PyPI source with the Python 3 WSGI plugin embedded. A plain-WSGI Python demo app renders a live epoch and worker PID on every request, so the application server is proven to be executing code, not merely listening.
• Expert support included: 24/7 technical assistance from cloudimg engineers covering uWSGI deployment, Emperor/vassal configuration, nginx tuning, TLS termination and worker process management.

## Application Stack

• uWSGI 2.0.31 (open source, GPL-2.0 with a linking exception that explicitly permits serving your own closed-source apps), a monolithic build with the Python 3 WSGI plugin embedded
• Distro Python 3, with libpcre2 and libssl linked in for internal routing and TLS support
• nginx as the :80 front door, proxying to uWSGI over a unix socket with uwsgi_pass
• A plain-WSGI Python demo app served through the socket, proving genuine per-request execution
• A dedicated EBS application data volume for your app code and vassal configs, on its own independently-resizable disk
• A first-boot systemd oneshot that starts the Emperor and nginx, confirms the demo app answers, and writes a non-secret endpoints notes file

## Security Posture

• No admin login surface: uWSGI is an application server with no web console and no baked credential - there is nothing to authenticate to and no secret to rotate
• Secure by default: the uWSGI stats server is bound to loopback only and never exposed off-box; nginx server_tokens is off; the Emperor runs no privileged vassal
• Unprivileged execution: the demo app runs as a dedicated unprivileged system user; keep your own apps off root
• TLS readiness: TLS is not preconfigured and no private key survives image capture; cloudimg support can help front nginx with Certbot or terminate TLS at an Application Load Balancer

## AWS Integration Points

• AWS Systems Manager: the SSM agent is installed, so you can use Session Manager for shell access without opening SSH ports, and Patch Manager for OS updates
• Application Load Balancer: place this AMI behind an ALB for traffic distribution, health checks, and TLS termination
• Amazon CloudWatch: stream nginx and uWSGI logs to CloudWatch Logs for centralized monitoring

## Deployment Quickstart

1. Launch the AMI on an m5.large or larger instance

2. Open port 80 in your security group (and port 22 for SSH)

3. Browse to http://your-instance-ip/ for the bundled Python WSGI demo app

4. SSH in and read the loopback stats socket to see live uWSGI workers

5. Deploy your own WSGI app under the application volume, copy the demo vassal, and let the Emperor auto-load it

## Use Cases

• Python WSGI web application hosting: serve Flask, Django or FastAPI backends in production behind nginx, with worker management and automatic restart
• Multi-app hosting with the Emperor: run several isolated apps on one node, each as its own vassal, with a single web front door
• Lift and shift of on-premises uWSGI workloads: migrate existing uWSGI-hosted applications to EC2 without re-architecting

## About cloudimg

cloudimg publishes and maintains production-ready application server images across AWS and Azure Marketplace, with ongoing security patches backed by 24/7 engineering support.

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