You'll have a blast drawing your self-hosted diagram using the self-hosted and open source Excalidraw. Here's how I did it.

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Excalidraw is a self-hosted and open source web tool for drawing diagrams and mapping out projects that you want to display comprehensive visuals of. Draw and Map your Self Hosted Services using Excaladraw. Use the following commands on any LXC or VM to get ExCalidraw up and running.

Draw and Map your Self Hosted Services using Excaladraw

Step 2. Read the "help" dialog box and keyboard shortcuts

Step 3. Begin drawing using tools on the toolbar