Overview
Xloud Instance HA monitors compute hosts and automatically recovers protected instances when a host becomes unreachable. As a project member, you configure which instances are protected and track recovery events through the Dashboard or CLI. This guide covers protection concepts, assigning policies to instances, and monitoring ongoing recovery workflows.Instance HA protection requires your administrator to have configured at least one
failover segment and host monitor. Contact your administrator if protection policies
are unavailable in your project. Your administrator can configure this through XDeploy.
In This Guide
How It Works
Understand the failover detection and recovery sequence from host failure to instance
restoration.
Protection Segments
Learn what failover segments are and how to view the segments your instances belong to.
Recovery Workflows
Understand the recovery process and the steps involved when an instance is recovered.
Monitoring Status
Track notification events, view recovery history, and verify instance protection status.
Troubleshooting
Diagnose protection assignment issues, failed recoveries, and notification errors.
Key Concepts
Failover Segment
A group of compute hosts monitored together as a unit. When a host in a segment
fails, all protected instances on that host are recovered.
Protection Policy
Attached to an instance to define its recovery behavior — whether to recover
automatically and how quickly to begin.
Host Monitor
An agent that continuously checks host availability and triggers the recovery
engine when a host becomes unreachable.
Recovery Notification
An event emitted by the host monitor that initiates the recovery workflow for
all protected instances on the failed host.
Next Steps
Instance HA Admin Guide
Configure failover segments, host monitors, and recovery policies platform-wide.
Instance HA Overview
Service overview, feature summary, and getting started with Instance HA.