ProxCenter v1.4.6 Release
The highlight of this release is the introduction of **ProxCenter HA**, which brings a highly available three-node control plane to ProxCenter.
ProxCenter v1.4.6: High Availability, Smarter Migrations and More
We're excited to announce the release of ProxCenter v1.4.6, a major feature release focused on high availability, migration reliability, infrastructure visibility and day-to-day operations.
The highlight of this release is the introduction of ProxCenter HA, which brings a highly available three-node control plane to ProxCenter.
But v1.4.6 goes much further. It introduces a new license add-on model, interactive warm migration cutover, major migration reliability improvements, enhanced inventory and topology views, more powerful blueprints, new languages, and a large collection of fixes across the platform.
Let's take a look at what's new.
🚀 ProxCenter HA: A Highly Available Control Plane
The biggest addition in v1.4.6 is ProxCenter HA.
A standalone ProxCenter installation can now be transformed into a three-node highly available control plane, providing greater resilience for production environments where ProxCenter has become a critical part of infrastructure operations.
The HA architecture combines:
- Replicated PostgreSQL for application data
- etcd quorum for distributed coordination
- A Virtual IP (VIP) with automatic failover
- Three ProxCenter control-plane nodes
If the node currently serving the virtual IP becomes unavailable, the VIP can fail over to another member of the cluster, keeping the ProxCenter management endpoint available.
Users / Administrators
|
Virtual IP
|
+--------------+--------------+
| | |
+-----------+ +-----------+ +-----------+
| ProxCenter| | ProxCenter| | ProxCenter|
| Node 1 | | Node 2 | | Node 3 |
+-----------+ +-----------+ +-----------+
| | |
+--------------+--------------+
PostgreSQL
replication
+
etcd quorum
Guided HA Deployment
Deploying the HA control plane is handled directly from ProxCenter through a dedicated wizard.
Before changing the existing installation, ProxCenter performs prerequisite checks including:
- TCP reachability
- Host listener collisions
- VIP network interface validation
- Network prefix validation
The conversion then provides live deployment progress directly from the interface.
Once the cluster is operational, a dedicated HA dashboard provides per-node status, a service grid and an operations panel for managing the control plane.
ProxCenter HA is available as a separate add-on license and is not included in the Enterprise edition.
🔄 Interactive Warm Migration Cutover
Warm migration receives one of its biggest improvements in v1.4.6.
Until now, the migration workflow controlled when the final cutover occurred.
With the new interactive warm cutover, you decide when the final switch happens.
ProxCenter performs the warm copy and then lets the administrator trigger the cutover at the appropriate moment.
A live downtime estimate helps determine when to proceed.
This makes migrations easier to coordinate with production requirements and maintenance windows while keeping service interruption as short and predictable as possible.
⚡ Faster and More Reliable Warm Migrations
A significant amount of work in v1.4.6 went into making migrations more robust.
Raw Block Volumes
Warm migration now allocates block volumes as raw instead of qcow2.
This removes a significant allocation delay when using storage such as:
- LVM
- Fibre Channel targets
- Other block-based storage
Failed allocations are also cleaned up correctly, preventing orphan volumes from breaking subsequent migration attempts.
Concurrent NBD Migrations
Reliable Long-Running Transfers
Long SSH-based warm copies now use connection keepalive mechanisms together with an inactivity timeout.
A genuinely stalled transfer therefore fails cleanly instead of remaining stuck indefinitely.
Cleaner Cross-Cluster Migrations
A race condition that could trigger two destroy operations against the source VM after a successful cross-cluster migration has also been fixed.
This prevents migrations from being incorrectly reported as failed even though the VM was successfully moved.
📦 Better Migration Inventory
Working with large external virtualization environments is now easier.
The external hypervisor VM inventory can be sorted by column, making it much more practical to locate workloads in large vCenter inventories.
Sorting has also been hardened against incomplete inventory data.
The migration console has received a usability improvement as well: its latest log line now remains visible above the task footer.
Small detail, big difference during long migration operations.
📸 Simplified Snapshot Management
Snapshot management gains a new bulk operation.
You can now delete all snapshots associated with a VM in a single action.
ProxCenter also prevents a cross-cluster migration from starting while snapshots remain attached to the VM, avoiding unsupported or inconsistent migration scenarios.
🗺️ Improved Infrastructure Inventory and Topology
The Inventory and Topology views continue to evolve into a centralized representation of the infrastructure managed by ProxCenter.
RBAC-Aware Infrastructure Views
Inventory trees, topology trees and connection lists now respect RBAC infrastructure grants.
Users only see the infrastructure and connections they are authorized to access.
This is particularly important for multi-team and multi-tenant environments.
SDN Visibility
Virtual machines can now be grouped by SDN VNet, including:
- VNet information
- VXLAN information
- SDN zone information
Host VLANs without attached VMs are also displayed in the Network view instead of being omitted.
More Accurate Infrastructure Data
Several inventory calculations have also been corrected.
Node Local Time no longer applies the UTC offset twice.
Storage capacity displayed in Overview is now aggregated per cluster, preventing shared storage from being counted once for every node.
🧩 More Powerful Blueprints
Blueprint provisioning becomes significantly more flexible in v1.4.6.
Blueprints now support:
- Custom images
- Cloud-init configuration
- Hardware configuration sliders
- IP selectors
- Bridge selectors
VM cloning also suggests the next available VMID rather than choosing a random value.
Cloud-init IP configuration is now correctly applied to bridges without IPAM configured, and VM names beginning with a digit are accepted.
These improvements make Blueprints more useful for repeatable infrastructure provisioning while still allowing customization when required.
🔔 Better Alert Management
Managing large numbers of alerts is now faster.
v1.4.6 introduces batch operations for alerts.
Multiple alerts can be selected and:
- Acknowledged together
- Deleted together
This reduces repetitive operations when handling infrastructure events across multiple clusters.
💾 Backup Scheduling Fix
Scheduled backup jobs now execute against the actual node hosting the guest.
Previously, a scheduled job could incorrectly target the first node of the cluster instead.
This is particularly important in multi-node Proxmox environments where workloads move between hosts.
🔌 Improved Connections and Node Management
The generated Proxmox VE token configuration script now includes the required:
Sys.PowerMgmt
permission.
This means node reboot and shutdown operations work directly after configuring the connection, without requiring administrators to manually modify token permissions.
Community installations also receive a permissions adjustment: users created on a Community installation are granted full super-admin rights.
🌍 Korean and Spanish Interfaces
ProxCenter continues to expand its international support.
v1.4.6 adds:
- 🇰🇷 Korean
- 🇪🇸 Spanish
- 🇰🇷 KRW currency support
Additional hardcoded French strings in the alerting interface have also been moved to translation keys, providing a more consistent localized experience.
🎨 Interface Improvements
Several smaller quality-of-life improvements are included in the release.
The interface now remembers panel width preferences, and status chips have improved readability across both light and dark themes.
Clipboard actions for SSH commands and task logs also include a fallback when the browser blocks the Clipboard API outside a secure context.
🔐 Security Improvements
v1.4.6 includes several security-related improvements.
Node identifiers, VMIDs and storage identifiers are now validated before being interpolated into SSH commands.
License handling has also been hardened.
If a license verification fails, ProxCenter no longer retains stale entitlement information from a previous successful check. Instead, the installation safely falls back to Community capabilities.
📊 What's Inside v1.4.6?
ProxCenter v1.4.6 is more than a collection of fixes.
It introduces several architectural foundations for the future of the platform:
| Area | What's new |
|---|---|
| 🛡️ High Availability | Three-node ProxCenter HA control plane |
| 🔑 Licensing | Stackable add-on licenses |
| 🔄 Migration | Interactive warm cutover |
| ⚡ Migration engine | Raw block volumes, NBD allocation and SSH reliability |
| 📸 Snapshots | Delete all snapshots in one action |
| 🗺️ Inventory | RBAC-aware topology and enhanced network visibility |
| 🧩 Provisioning | More powerful Blueprints |
| 🔔 Alerts | Batch acknowledge and delete |
| 💾 Backups | Correct guest-node scheduling |
| 🌍 Localization | Korean, Spanish and KRW |
| 🔐 Security | SSH input validation and safer license handling |
Thank you to everyone using, testing and contributing to ProxCenter.
More improvements are already on the way.