In today's IT landscape, the question is no longer if you use the cloud, but how you use it. Many organizations operate in a hybrid reality, with critical systems running on-premise while new applications are born in the cloud. This diversity in infrastructure, however, often leads to operational silos and vendor lock-in. Your on-premise tools don't work in the cloud, and your cloud management tools can't see your on-premise servers.

At 123cluster, we believe you should have the freedom to run your databases wherever it makes the most sense for your business, without changing your tools or workflows. That’s why our platform is engineered to be truly multi-platform, providing a single, consistent management layer across all major virtualized and cloud environments. We proudly support:

• On-Premise Virtualization: VMware, Proxmox
• Public Cloud: Amazon Web Services (AWS EC2), Microsoft Azure, Google Cloud Platform (GCP), and Oracle Cloud Infrastructure (OCI)

But our support goes deeper than just running on these platforms. We empower you to build database clusters that span them.

The Hybrid Cluster: Your Bridge from On-Premise to Cloud

Imagine your production PostgreSQL cluster. The primary node is running on a trusted VMware server in your data center. Now, what if you could add a replica node running on an AWS EC2 instance, making it a live, synchronized member of that same cluster?

With 123cluster, this isn't just possible—it's simple. Our platform enables you to create a single database cluster with nodes distributed across completely different infrastructures. You can have one node on a local Proxmox VM and a secondary node in an Azure virtual machine.

While this capability is powerful for creating geographically distributed, highly available clusters, its most transformative use case is enabling seamless, low-downtime cloud migrations.

Migrate to the Cloud with Confidence and Minimal Downtime

Cloud migration is a strategic goal for many companies, but the process itself, especially for stateful applications like databases, is fraught with risk and complexity, often requiring extended maintenance windows. 123cluster turns this daunting project into a controlled, manageable process.

Here’s how you can migrate a database from on-premise to AWS with near-zero downtime:

1. Extend Your Cluster: From the 123cluster dashboard, you simply add a new replica node to your existing on-premise cluster, but you provision this new node on an AWS EC2 instance. 123cluster handles the secure networking, installation, and data synchronization automatically. Your on-premise primary begins replicating data to the new AWS node in real-time.
2. Sync and Validate: Your AWS node is now a live, up-to-the-second hot standby of your production database. This is the perfect opportunity to connect your applications in the cloud to this replica (for read-only access) and run tests to validate performance and connectivity without any impact on your production workload.
3. Promote the Cloud Node: When you are ready to make the switch, you perform a controlled failover. With a single click, 123cluster promotes the AWS replica node to become the new primary. This action is orchestrated to be nearly instantaneous, redirecting traffic and ensuring data integrity. The downtime is measured in seconds, not hours.
4. Complete the Migration: Your application is now running live in the cloud. The former on-premise primary becomes a replica, which you can maintain for rollback purposes or decommission once the migration is fully validated.

This methodology dramatically reduces the risk and complexity associated with cloud migration, turning a high-stakes project into a routine operational task.

Unified Management, Wherever You Are

Of course, most organizations will run the nodes of a single cluster on the same platform for performance and simplicity. The fundamental benefit of 123cluster remains: whether your entire database fleet runs on VMware, is 100% cloud-native on GCP, or is spread across multiple providers, you use one tool and one workflow to manage everything.

This approach provides ultimate flexibility. If you get better pricing from a different cloud provider or decide to repatriate a workload on-premise, your database management strategy doesn't have to change. You are free to choose the best infrastructure for the job without being locked in by your tooling.

Ready to break down your infrastructure silos? Schedule a demo and discover how 123cluster gives you the freedom to manage your databases anywhere.

‍