Portable Public IPs for Failover
RamNode Floating IPs are static public IP addresses that can be reassigned between instances in the same region in seconds, keeping your services online during maintenance, upgrades, or failures.
What Is a Floating IP?
A floating IP is a public IP address that lives in your RamNode Cloud account and can be attached to any instance in the same region. Unlike the IP address that is automatically assigned when you create an instance, a floating IP is not tied to one specific server. You can move it between instances on demand through the cloud control panel, API, or CLI.
Because the IP address stays constant while the underlying instance changes, floating IPs make it possible to build failover, blue-green deployments, and migration workflows without waiting for DNS changes to propagate.
What Are Floating IPs Used For?
Any service that needs a stable public address and the ability to move between instances can benefit from a floating IP.
High Availability Failover
Point your domain or clients at a floating IP. If the primary instance fails, move the IP to a standby instance to restore service in seconds.
Zero-Downtime Maintenance
Deploy updates on a fresh instance, validate it, then migrate the floating IP from the old instance to the new one without service interruption.
IP Whitelisting
Keep the same public IP for third-party services, firewalls, and DNS records even when you rebuild or resize the instance underneath.
Blue-Green Deployments
Stand up a parallel environment, run final checks, then instantly switch production traffic by moving the floating IP to the green environment.
Database & API Failover
Use a floating IP as a consistent connection endpoint for databases, APIs, or internal gateways, then switch it to a replica or backup instance when needed.
Stable External Addressing
Preserve a single public IP across instance replacements, upgrades, and region-specific architectures without reconfiguring external systems.
Why Use RamNode Floating IPs?
Instant reassignment. Move a floating IP between instances in the same region through the control panel, OpenStack CLI, or API in seconds.
No DNS propagation delays. Because the IP address stays the same, clients and services continue to reach the same endpoint without waiting for DNS caches to refresh.
Works with load balancers. Combine floating IPs with RamNode Cloud Load Balancers for a resilient entry point that can be shifted or layered behind other services.
API and CLI control. Automate failover scripts, maintenance windows, and orchestration workflows using the OpenStack API or standard CLI tools.
Region-scoped. Floating IPs are allocated within a region and can be moved between any instances in that region.
Floating IP at a Glance
Add Floating IPs to Your Cloud Project
Allocate floating IPs through the cloud control panel and move them between instances in the same region as needed for failover, maintenance, and stable public addressing.
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