Ronny Issac
Engineering Manager at Kubermatic
Kochi, India
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Ronny has spent 12+ years in the Infrastructure Domain contributing to teams at Hewlett Packard Enterprise, Nutanix, and AWS. Now, as Engineering Manager at Kubermatic, I collaborate with bright minds on Kubernetes and beyond, applying cutting-edge trends and hands-on strategies to build robust, scalable cloud-native solutions.
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KubeVirt on the Loose: Kubernetes-Powered VM Migrations That Defy Gravity
This session is about freeing your workloads from the shackles of traditional maintenance windows. By dynamically relocating running Virtual Machines (VMs) between Kubernetes nodes, KubeVirt keeps apps online during upgrades, scaling, or node failures.
Beneath the surface, KubeVirt orchestrates memory transfers and status checks, making VMs appear gravity-defying. “Pre-copy” sends most pages while VMs stay active, followed by a quick “stop-and-copy.” A “domain notify pipe” coordinates source and destination. For high dirty rates, “auto-converge” throttles CPU or “post-copy” starts the VM on the target, fetching pages on demand. Dedicated “migration0” and configurable parameters (e.g. completionTimeoutPerGiB) prevent stalls and manage bandwidth.
Learn best practices for migration timeouts, TLS toggling, and traffic isolation. We’ll also explore real-world scenarios like draining nodes for maintenance or using auto-converge on heavy VMs.
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