# OPCU UA Server on Alpine-linux

**URL:** <https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113>\
**Category:** General\
**Tags:** docker, opcua\
**Created:** [19 March 2025 18:11 UTC](https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113 "2025-03-19T18:11:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![olab](https://avatars.discourse-cdn.com/v4/letter/o/d07c76/32.png) [@olab](https://discourse.nodered.org/u/olab)\
**Post date:** [19 March 2025 18:11 UTC](https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113/1 "2025-03-19T18:11:58Z")

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Hi,  
The last couple og weeks I've had a fight with Node Red and so far I'm the one loosing.

I'm trying to set up OPC ua server in NR with no luck on Alpine-linux.

Installations runs fine but when I try the sample flow i get an error. This seems to happen both with both node-red-contrib-opcua-server-refresh and ode-red-contrib-opcua-server.

Running on vm (alpine) ==\> fails.  
Running on docker (nodered/node-red) ==\>fails.

Running on vm (ubuntu) ==\> works just fine

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/a/7ae44e435fa3515abbfc12f743c207ddd83eeb82.png)

Can someone please help

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [19 March 2025 18:19 UTC](https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113/2 "2025-03-19T18:19:45Z")

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Maybe try [`node-red-contrib-opcua`](https://flows.nodered.org/node/node-red-contrib-opcua). It has a server node too (and built in examples available via CTRL+I)

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<div class="post-metadata">

**Author:** ![olab](https://avatars.discourse-cdn.com/v4/letter/o/d07c76/32.png) [@olab](https://discourse.nodered.org/u/olab)\
**Post date:** [20 March 2025 18:05 UTC](https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113/3 "2025-03-20T18:05:59Z")

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Thank you for your response.

There are very litle documentation on this servernode. I'm going to add about 650 items to the opc server, some of them with update every second.

I don't see how opcua\_server\_node can do sunch task

Kind regards

O

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<div class="post-metadata">

**Author:** ![olab](https://avatars.discourse-cdn.com/v4/letter/o/d07c76/32.png) [@olab](https://discourse.nodered.org/u/olab)\
**Post date:** [20 March 2025 20:37 UTC](https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113/4 "2025-03-20T20:37:44Z")

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I just found that the private certificate is not created during installation of the node.

Does anyone know why or how to create a new one?

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [18 June 2025 20:38 UTC](https://discourse.nodered.org/t/opcu-ua-server-on-alpine-linux/96113/5 "2025-06-18T20:38:34Z")

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