The Vormox blog
Guides, deep dives and product news on automating Proxmox VE at scale.
Blog posts
Setting Up a Corosync QDevice for Two-Node Proxmox VE Cluster Quorum
A two-node Proxmox VE cluster loses quorum the moment one node reboots. Here's why the vote math breaks down and how to fix it permanently with an external corosync QDevice as a tie-breaker.
What Is a Proxmox Cluster? (And Do You Actually Need One?)
Clustering sounds like something only data centers need, but it's really just several Proxmox nodes agreeing to share one view. Here's what Corosync and quorum actually mean, and when you genuinely need a cluster versus when you don't.
Disarming HA in Proxmox VE 9.2: Safe Cluster-Wide Maintenance Without Fencing
Proxmox VE 9.2 adds cluster-wide disarm-ha and arm-ha commands so you can do network maintenance on an HA cluster without triggering fencing. Here's how the feature works and how to use it safely.
Speeding Up Metadata-Heavy Workloads on Proxmox VE with ZFS Special Allocation Class Vdevs
Directory listings and PBS garbage collection crawling on an otherwise fast ZFS pool? A special allocation class vdev moves metadata off spinning disks and onto SSD without rebuilding the pool.
How to Create Your First LXC Container in Proxmox VE
Virtual machines feel heavy for small Linux services. Here is how to create, start, and manage your first LXC container in Proxmox VE using the web interface and the pct command line tool.
How to Add a Second Hard Drive to a Proxmox VM
A step-by-step guide to adding a second virtual disk to a Proxmox VE virtual machine, from the Proxmox GUI through partitioning, formatting, and mounting it inside Linux.
How to Resize a Virtual Disk in Proxmox VE (Linux and Windows Guests)
Learn how to grow a VM's virtual disk in Proxmox VE and extend the partition and filesystem inside Linux and Windows guests so the extra space is actually usable.
Configuring Redundant Corosync Links for Proxmox VE Cluster Resilience
A single corosync link is a hidden single point of failure in every Proxmox VE cluster. Here's how to diagnose link instability and configure a second, truly independent corosync link using knet.
How to Mount an NFS Share in Proxmox VE (Add NFS Storage Step by Step)
A beginner's guide to adding NFS network storage in Proxmox VE, covering the GUI and pvesm command-line methods, what each field means, and how to fix common mount errors.