Proxmox PVE 5.4 - VMs virto driver network card (yellow triangle on network icon) is working not stable.

[sannsor]

I have a Proxmox cluster implemented and configured on my environment with PVE 5.4 version. All virtual machines are working about 1 months or 2 moths and then the network inside the virtual machines becomes showing yellow triangle on the network icon (then unable to ping from another hosts). I need to disable and re-enable network connection and then working ok. I am using virto driver to provide link for those vms. can anyone know what is the problem? how to fix it?

Thanks,

Sor

 

[Alwin]

Please upgrade to the latest virtIO drivers inside the VM (I assume Windows). And best also upgrade your installation to the latest packages.

 

[sannsor]

Thank you Alwin, I will try to upgrade virtIO drivers. I can't do upgrade Proxmox OS yet. I never try it as I have many production servers are running on this. It is clustering. Any upgrade guideline to process upgrade Proxmox?

 

[Alwin]

See here.
https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0