The beauty of virtual infrastructure with K8s and containers
summary
Shows how containers use the host kernel via namespaces and cgroups while KVM hypervisors are built in C and rely on hardware virtualization, with concrete examples of clone+namespaces and a KVM-based hypervisor sketch. Demonstrates running a container-in-container via the Docker socket and warns that VM-in-VM is possible but requires special hardware. Describes Kubernetes reconcilers making VMs declarative (example: a medium Ubuntu VM with 50GB disk, 4GB RAM, 3 NICs), and mentions dev tooling like minikube/kind and a 15s unit-test cluster workflow.
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chapters (9)
- 0:00Start
- 2:51A Container
- 5:19namespaces(7)
- 6:15Why containers matter
- 8:02Example with KVM
- 9:39All the hypervisors
- 10:13Why VMs matter
- 17:39Reconciling a simple VM
- 20:53Kris Nova
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