fabiand

# https://kubernetes.io/docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace/

[fabiand@toolbox Downloads]$ minikube kubectl -- apply -f - <<EOF
apiVersion: v1
kind: ResourceQuota
metadata:
  name: mem-cpu-demo
spec:
  hard:
    requests.cpu: "1"

fabiand

apiVersion: kubevirt.io/v1
kind: VirtualMachineInstanceDomainPreferences
metadata:
  name: linux
spec:
  preferNetworkInterfaceMultiQueue: true
  preferBlockMultiQueue: true
  diskDefaults:
    preferedDiskBus: virtio
    preferedCDROMBus: virtio

fabiand

#!/bin/sh

# POC to connect a libvirt VM to a Pod NIC created by CNI

# Resources:
# - rancher-vm networking https://github.com/rancher/vm/blob/master/docs/networking.md
# - qemu-ifup https://gist.github.com/Wayt/26d25002d00d7cb4348499a145456999
# - cni https://github.com/containernetworking/cni/blob/master/scripts/exec-plugins.sh

# yum install -y macchanger

fabiand

import pexpect

image = "fedora-20.img"
user = "root"
password = "changeme"

# Define the qemu cmd to run
# The important bit is to redirect the serial to stdio
cmd = "qemu-kvm"
cmd += " -m 1024 -serial stdio -net user -net nic"

fabiand

  volumes:
  - name: pvcdisk
    persistentVolumeClaim:
      claimName: disk-alpine
    seedWith:
      containerDisk:
      image: some-registry/some-image:tag

fabiand

apiVersion: kubevirt.io/v1alpha3
kind: VirtualMachineInstance
metadata:
  labels:
    special: vmi-kernel-boot
  name: vmi-kernel-boot
spec:
  domain:
    devices:
    firmware:

fabiand

#!/bin/bash
# usage: cat topo.sh | ssh node01 bash  | tee /dev/stderr  | osage -Tpng -o noname.gv.png

NS=openshift-cnv
OC=${OC:-oc}
nsget() { $OC get -n $NS $@ ; }

operators() {
nsget deployments -l olm.owner --no-headers -o custom-columns=name:.metadata.name,count:.spec.replicas
}

fabiand

---
apiVersion: kubevirt.io/v1alpha3
kind: VirtualMachineInstance
metadata:
  labels:
    special: vmi-alpine-kernel
  name: vmi-alpine-kernel
spec:
  domain:
    firmware:

fabiand

apiVersion: kubevirt.io/v1alpha3
kind: VirtualMachine
metadata:
  name: testvm
spec:
  running: false
  template:
    metadata:
      labels: 
        team: Tiger

fabiand

In order to use kernel auto-numa

• kernel auto-numa continuous rebalancing

     <vcpu>NNN</vcpu>
     <vcpu placement="static">NNN</vcpu>
  

  provided NO <vcpupin vcpu="0" cpuset="xxx"/> is set inside ``