Docker TUI: System & Container Monitor

This is a terminal-based UI (TUI) for monitoring system resources and managing Docker containers. It provides a clean, real-time view of your running and stopped containers, along with key system metrics like CPU and RAM usage.

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Features

• Real-time Monitoring: Displays host system CPU and RAM usage with dynamic bar graphs.
• Container Status: Lists all Docker containers, showing their ID, name, image, port mappings, and current status.
• Container Management: Easily start, stop, restart, rename, or delete containers with simple keyboard shortcuts.
• Uptime Display: Provides a clear, formatted uptime for all running containers.
• Intuitive Interface: A simple, curses-based TUI that is easy to navigate and read.

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Prerequisites

To run this script, you need to have the following installed on your system:

• Python 3.6+
• Docker
• Docker SDK for Python: pip install docker
• psutil: pip install psutil

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Installation & Usage

1. Save the script: Save the provided Python code to a file named monitor.py.
2. Make it executable:

   chmod +x monitor.py

3. Run the script:

   ./monitor.py

If you encounter a PermissionError when trying to view port mappings, you may need to run it with sudo:

sudo ./monitor.py

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Key Bindings

Key	Action
↑ / ↓	Navigate through the container list
U	Update the list of containers
S	Start the selected container
X	Stop the selected container
R	Restart the selected container
N	Rename the selected container
D	Delete the selected container (requires confirmation)
Q	Quit the application

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How It Works

The script leverages the Docker SDK for Python and the psutil library to gather information. The main application loop uses the curses library to draw a dynamic, interactive interface in the terminal. It fetches container data, calculates resource usage, and refreshes the display every second to provide a live view of your system and containers.

• get_cpu_usage() and get_ram_usage() fetch system-wide resource metrics.
• get_docker_containers() iterates through all containers, pulling their status, image, and port information.
• The _perform_action() function handles all the container management commands like start, stop, and delete.

Feel free to modify the script to fit your specific needs or add new features!