Architecting Storage Resilience in Harvester HCI with Longhorn
Learn how Harvester uses KubeVirt and Longhorn to build a resilient HCI. This guide covers the 3-node minimum design, trust boundaries, and how to verify storage failover.
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Diagnosing Harvester VM Startup Failures Caused by Resource Constraints
Step‑by‑step diagnostic guide for Harvester VMs stuck in Pending/Creating due to CPU, memory, quota, taints, missing KubeVirt agent, or storage‑class issues.
Configuring and Validating VM Live Migration in Harvester
Live-migrate Harvester VMs between nodes for zero-downtime maintenance: prerequisites, the UI and virtctl procedure, validation checks, and how to recover from a stalled migration.
Live‑Migrating VMs in Harvester: How It Works and What to Watch For
A step‑by‑step look at Harvester’s live migration feature, including prerequisites, a sample migration command, verification steps, and the key trade‑offs you need to consider before moving a running VM.
Putting a Harvester Node into Maintenance Mode: Automatic VM Evacuation and Safe Hardware Service
How to put a Harvester node into maintenance mode so VMs live-migrate automatically, what to check before powering hardware off, and how to recover from stalled evacuations.
harvesterArchitecting VM Persistence in Harvester: KubeVirt and Longhorn Integration
Harvester blends KubeVirt and Longhorn to give VMs the mobility of containers while preserving persistent storage. Learn how the architecture keeps VM data safe across node failures, how to verify the integration, and when to shift to external storage for low-latency workloads.
Taking Point‑in‑Time Snapshots of VMs in Harvester Without Downtime
Learn how to create point‑in‑time snapshots of running VMs in Harvester without downtime, verify them via CLI and Longhorn UI, and understand the storage trade‑offs involved.
Live Migrating VMs in Harvester with Virtctl: A Practical Guide
Learn how to Harvester’s live migration works, see a step‑by‑step virtctl example, and understand the limits before moving VMs between nodes.
CNI MTU setting for concurrent VM traffic
CNI MTU setting for concurrent VM traffic In Harvester, virtual machines are deployed as KubeVirt pods and rely on the host’s CNI bridge for networking. When multiple VMs generate concurrent traffic, packet fragmentation can occur if the MTU on the bridge does not match the VM interfaces. This mismatch manifests as increased latency and packet loss during hi