Node-RED OPC-UA Data Logger

I need a clean, well-documented Node-RED flow that connects to a single OPC-UA server and logs selected tag data for later analysis. The primary focus is reliable historical storage rather than live dashboards, though a simple sanity-check UI for real-time values will help with commissioning. Here is the context you can assume: • One OPC-UA endpoint is already reachable on the network (endpoint URL and credentials supplied after award). • The logging back-end is flexible; feel free to propose InfluxDB, PostgreSQL, CSV rotation, or another open-source store you trust for time-series data. • The host machine will be a Debian-based industrial PC with Node-RED running in Docker, so any solution needs to ship as a deployable container or include clear instructions for that environment. Deliverables 1. Exported Node-RED flow (.json) wired for the chosen database, with tidy node arrangement and meaningful comments. 2. Connection test demonstrating successful browsing, subscription, and write of at least five sample tags. 3. Step-by-step setup notes (markdown or PDF) that let me recreate the whole stack from a clean OS install. 4. Optional: one minimal dashboard tab that shows current values, configured using node-red-dashboard or an equivalent node you recommend. Acceptance criteria • The flow survives OPC-UA reconnects without manual intervention. • Logged data can be queried to prove time stamps and values are correct over a 24-hour soak test. • All components run as non-root inside Docker. When you reply, attach a concise project proposal that outlines your suggested data store, any extra nodes or plug-ins you plan to use, and the rough timeline to reach each deliverable.

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