This is a question with probably many answers but I'll as anyway. I'm about to set up a node red system to present dashboards from mainly OPUA and MSSQL data. To host this I'll set up a virtual Linux server. What experiences does the community have? Which Linux distribution to use? CPU, RAM? We a…

[image] olab: CPU, RAM? We are probable talking about 300 UPC tags, 30-40 trends, 50 gauges. It is quite possible that even a Pi could handle this. So maybe a nano-PC of some kind if you want something more powerful than a Pi3 or equivalent. [image] olab: Which Linux distribution to use …

If the aim is too just display guages and graphs then Grafana sounds more suitable for your project? I would use the OS your more familiar with what ever that maybe. I tend to use Docker containers for projects like this.

All of my prod instances are Ubuntu Server on ESX. Resource requirements are fairly low and you're limited to a single thread, so going heavily co-tenant is a good way to squeeze your money's worth out of modern hardware.

Sounds like a good idea. I havn't checked Grafana until now but it looks like what I need. Do you have a sample showing how to get data from Node Red, over to Grafana? O

[image] MQTT->(JSON)->?->InfluxDB->Grafana General Hi, I'm brand new to NodeRed, MQTT, InfluxDB and Grafana I'm trying to visualize Data form a ESP8266. Onto the dashboard the data come in. But I've got an issue to transform the MQTT data into an proper format for InfluxD…

Grafana has data sources for MS-SQL (as well as many others), so that's probably the most efficient way? I've not heard of OPUA.

Thank you for this explanation. In my case the choice will be Ubuntu Server LTS with Node-Red, OpenVPN, MySQL and Webmin. With this combination, I'll get a long life of Ubuntu in server version so light (no GUI or useless apps) but easy to manage remotely via VPN secure connection. I'll make a tu…

I think he meant "OPC UA Server" with OPUA. I did not know Grafana, I will study that, at first sight, I like it.

I know this question is 4 yld but If it interests some of you, I tested with ModBus TCP communication for about 220 values (2 queries of 120 and 100 registers at time) each second, recording in MySQL database, it works fine and CPU load on Raspberry Pi 4 is 2-5% only. So Pi4 is enough, but best is …

My 2 cents about Raspberry pi is that SD cards are sensitive to shutdown and might go corrupt. There are a lot of similar forum posts about that: https://forums.raspberrypi.com/viewtopic.php?t=311435 In my case, RPi was shutdown every day for a night, so UPS was not an option. Some cards performed…

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JayDickson 25 April 2019 15:43 6

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