Technical
Realm Missing from Login Screen: Fix the Proxmox Dropdown
Realm missing from login screen? Check /etc/pve/domains.cfg and the pvedaemon service. Here's the fix that worked on my homelab.
Technical
Falling Over to a ZFS Replica: The Manual Proxmox Failover That Actually Works
Falling over to a ZFS replica in Proxmox isn't a button. You promote the snapshot, detach the old disk, and boot. Here's the exact sequence.
Technical
Force Virtio PCIe in Pfsense VM? Proxmox QEMU Args That Work
Force Virtio PCIe in a pfSense VM on Proxmox by adding custom QEMU args. Here's the exact args line, how to verify it, and why you'd bother.
Technical
Proxmox NFS Storage Status Unknown on Second Node: Fix It
Proxmox NFS storage status unknown on the second node usually means a mount issue. Check /etc/pve/storage.cfg and the export, then fix it.
Technical
virtiofs and running out of file handles: fix it in Proxmox VMs
virtiofs hits the file handle ceiling fast. Here's a test workload that reproduces it and which workaround actually raises the limit.
Technical
Accidentally Increased the Proxmox Host sda3 to Max: How to Shrink It Without Reinstalling
You accidentally expanded sda3 to max on your Proxmox host. Here's how to shrink it back safely—sda3 is an LVM physical volume, not the root filesystem.
Technical
Proxmox iSCSI Multipath: Setup with TrueNAS and Failover Test
Set up iSCSI multipath on Proxmox with a TrueNAS target. Works with two NICs, failover verified by pulling a cable.
Technical
Proxmox: How to Give a User Access to Only One VM’s Console
Lock a user to a single VM's console with a custom role and ACL path. The exact privileges and the gotcha that's missing from forum replies.
Technical
Container mount point GID mapping works, but no write access
GID mapping looks right but writes still fail? Check the host directory ownership, ACLs, and the order of your idmap entries.
Technical
VM becomes unresponsive during Veeam backup: fix I/O starvation, VSS, and cgroup limits
VM becomes unresponsive during Veeam backup? It's usually I/O starvation from the agent eating disk bandwidth, or VSS freezing the filesystem.