# OPC UA Server in Linux
**URL:** https://discourse.nodered.org/t/opc-ua-server-in-linux/94417
**Category:** Industrial
**Created:** [7 January 2025 07:32 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417 "2025-01-07T07:32:55Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@olab](https://discourse.nodered.org/u/olab)
#### Post date: [7 January 2025 07:32 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/1 "2025-01-07T07:32:55Z")
Hi,
Did a few test of differnt OPC UA servers in NR running on Linux. NR constantly crashes when a basic flow is deployed. Doing the same thing in NR running under Windows seems OK.
Looks like there is a certificate issue.
How can I solve this one?
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### Author:  [@mikakaraila](https://discourse.nodered.org/u/mikakaraila)
#### Post date: [15 January 2025 11:43 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/2 "2025-01-15T11:43:16Z")
Check that you have access rights to folders, anything on console?
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### Author:  [@olab](https://discourse.nodered.org/u/olab)
#### Post date: [15 January 2025 14:32 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/3 "2025-01-15T14:32:13Z")
Access to folder is not the proble. I’t ok i Windows but fails in alpine-linux and official docker running on alpine or ubuntu.
Certificate folder is not created during node installation
O
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### Author:  [@mikakaraila](https://discourse.nodered.org/u/mikakaraila)
#### Post date: [16 January 2025 09:58 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/4 "2025-01-16T09:58:16Z")
Certificate folder should appear when there is first connection if I remember correctly certificate manager will try to create PKI ( **p** rivate **K** ey **I** nfra structure). Is container readonly?
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### Author:  [@olab](https://discourse.nodered.org/u/olab)
#### Post date: [16 January 2025 13:28 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/5 "2025-01-16T13:28:02Z")
Hi.
Container is installed all basic, no specialities and I’m able to install any other nodes. So, I do not think it’s read only.
O
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### Author:  [@DWoodlock](https://discourse.nodered.org/u/DWoodlock)
#### Post date: [17 January 2025 16:02 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/6 "2025-01-17T16:02:56Z")
What opcua package are you using?
I have recently tried to build out a server using node-red-contrib-opcua and had issues with freezing/crashing as well.
This is not a containerized system, just basic node-red installed on the pi5 thats running raspbianx64 lite.
Other opcua server packages continue to work fine.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [18 March 2025 16:03 UTC](https://discourse.nodered.org/t/opc-ua-server-in-linux/94417/7 "2025-03-18T16:03:20Z")
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