Proxmox

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Proxmox VE is a complete, open-source server management platform for enterprise virtualization. It tightly integrates the KVM hypervisor and Linux Containers (LXC), software-defined storage and networking functionality, on a single platform. With the integrated web-based user interface you can manage VMs and containers, high availability for clusters, or the integrated disaster recovery tools with ease.

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Proxmox host stops responding, LXC continues (infosec.pub)

submitted 2 weeks ago by ProfessorHoover@infosec.pub to c/proxmox@lemmy.world

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I'm running Proxmox 9 on a server with currently a single LXC running. On no apparent time schedule, within a day but frequently within an hour, the host will stop responding to SSH, pings and the web UI stops updating. However, the LXC continues to run happily. The only way to bring the host back up is to power cycle the server.

Has anyone got any troubleshooting tips?

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[–] NinjaTurtle@feddit.online 2 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

If its only the main OS not responding to SSH and the web portal just disappears after a couple of minutes use, then it might be your router is reusing the IP address linked to Proxmox. Proxmox uses a static IP address, so will not change once set up. Your router on the other hand may re use the address if it was never reserved specifically for the Proxmox machine. In other words, two devices are fighting for the same IP address on your router.

This is what happened to me. Took a while to figure it out until someone suggested checking the IPs and Mac addresses on the router. No issue since fixing it on the router. Just reserve the address on the router, reset the device that is using the same address (if you can figure it out), and reset the router. Make sure you are reserving the address for the correct machine by chcking the Mac address.

[–] ProfessorHoover@infosec.pub 1 points 1 week ago

Thanks, I have already reserved the IP address for my host.