I’ve wanted to play with multi-WAN routing setups for awhile. I thought about buying Starlink, but it’s a bit pricey as a purely backup solution, and I’m in a situation where my primary internet is very reliable for about the same price. So I settled for LTE backup. I looked around for awhile, trying to decide what the right solution is for me. I really wanted to pass through the IPv4 address and IPv6 prefix from the ISP through to my OPNsense router, since I don’t want to deal with triple-NAT and dual layer firewall.

I’ve played with network booting before (and I even tried to netboot Windows, what a nightmare that was), but now I want to get serious about it. I want to netboot my VDI Clients. I’ve been working on a thin client series, and the next step is to get rid of the installation entirely. I could use something like Linux Terminal Server Project, but that’s a bit overkill for this, and I wanted to learn Alpine anyway, so I’ve chosen to use Alpine Linux for the client operating system.

In this project, I explore thin client software, and set up a Raspberry Pi to act as a thin client. This is a multi-part project, follow along below for each sub-project. Raspberry Pi SPICE Thin Client The first project in this series creates a Raspberry Pi Thin Client which is permanently bound to a specific VM in Proxmox, and boots directly into the thin client session. You would use this when you have a 1:1 relationship between clients and VMs, such as a computer lab.

For my last trick, I setup a multi-user thin client where each user account was connected to a specific virtual machine. This is great, but if you have a lot of thin clients you might not want to create a ton of VMs and might instead want each user in the system to have one or more VMs. Well, Josh Patten has written a Python-based GUI to select thin clients which you have access to, and today we are going to turn that into an appliance on both a Raspberry Pi and an actual x86 based Thin Client (running Debian).

I’ve made many videos on Thin Clients before, all of them relying on Proxmox and the SPICE protocol. This works well when you control both the client and the hypervisor, and allows a lot of flexibility in the guest OS at the expense of flexibility at the client. If you want to rely on a remote access / Bring-Your-Own-Device type solution, you probably care more about solid multi-platform client support than flexibility in mixing VM OSes and running with no software installation on the VM.

In previous posts, I’ve been building up a thin client / VDI infrastructure based on Proxmox hosted virtual machines, using the SPICE protocol. This has gone well. However, the current setup basically launches the computer into a purely thin client mode, where it’s hardcoded to a specific VM and can do nothing else. There has been some interest in making some kind of launcher to select VMs to log in to, and I decided to find a solution for this.

As promised in my previous blog post on the topic, the SPICE protocol is capable of USB redirection. I didn’t dive into it for that post, but now the future is here and I’ve added USB redirection to my Raspberry Pi thin client. I’ve tested it with USB flash drives, webcams, and pretty much all of the USB devices I could find. And I’m here to tell you how it all works.

As part of my series exploring backup options, I’m exploring the options for pulling a backup of a Proxmox Virtual Environment (PVE) host to TrueNAS SCALE server. In this case, PVE host has local ZFS storage, and the TrueNAS system is acting as the backup server. Ideally, PVE would snapshot in ZFS and we could sync those snapshots with a TrueNAS Data Replication task, but PVE doesn’t use the ZFS snapshot features by default.

I’m experimenting with Proxmox Virtual Environment (PVE), the same hypervisor I run on my Minilab. It supports clustering and high availability, and I’d like to implement the cluster option. Clustering without HA allows multiple nodes to be managed from a single user interface, and for VMs to be offline migrated between nodes. This sounds pretty useful for me, even without the high availability features like live migration. However, any cluster relies on a node voting scheme which requires agreement (quorum) from all of the nodes, and the cluster won’t function without quorum being met.

As part of my series exploring backup options, I’d like to see if I can use Proxmox Backup Server to archive both datasets and zvols of a TrueNAS SCALE server. Why would you want to do this? In my case, I’m trying to choose the best starting point for my new backup server, and one potential option is to use Proxmox Backup Server (PBS), but I’d like to store data outside of the Proxmox Virtual Environment (PVE) ecosystem.