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dnf -y install git
dnf -y install rsync
dnf -y install make
dnf -y install docker
systemctl start docker
systemctl enable docker
git clone https://github.com/kubevirt/kubevirt.git
# you may need to run this before the build: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
# where eth0 should be replaced with whatever is on that machine
# do that if the containers fail to fetch the software they need when running "make"

yuvalif

yum -y install git
yum -y install rsync
yum -y install make
yum -y install docker
systemctl start docker
systemctl enable docker
git clone https://github.com/kubevirt/kubevirt.git

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This is based on this blog post

Initial Stage

Create two namespaces:

sudo ip netns add ns1
sudo ip netns add ns2

Use a veth Pair

Create veth pair and set each side in each namespace:

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// This file tries to create net namespace race condition
// in order to verify thread safety of setting a thread to a network namespace.
// 
// To compile: g++ -Wall -O2 -o test_ns test_ns.cpp -lpthread
// 
// before running, call the following bash command to create network namespaces 0-9:
// for i in {0..9}
// do
//   ip netns add ns$i
// done

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• Install k8s or OpenShift (e.g. https://gist.github.com/yuvalif/941052b642b8aa4157420324fc6315e5)
• Setup the development environment. For example:
  • Centos7.5: https://gist.github.com/yuvalif/cf97a754198c20922731b132792156d4
  • Fedora28: https://gist.github.com/yuvalif/7b4b2f4317464e0ed30c4d91e731a30e
• Clone the kubevirt branch you want to build
• Build the docker images and push into local repo:

make && make docker

• Install kubevirt with images from the local repo:

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Setup

Start k8s suitable for flannel CNI:

kubeadm init --pod-network-cidr=10.244.0.0/16

Copy kubeconfig:

mkdir -p /$USER/.kube && cp /etc/kubernetes/admin.conf /$USER/.kube/config

Check that bridge-nf-call-iptables equals 1:

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Fllow instructions from here. Some missing dependencies after running ./autogen.sh. Note that in consequent runs ./configure is sufficient.

 sudo dnf install -y rpcgen
 sudo dnf install -y gnutls-devel
 sudo dnf install -y libnl3-devel
 sudo dnf install -y libxml2-devel
 sudo dnf install -y libtirpc-devel
 sudo dnf install -y yajl-devel

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apiVersion: kubevirt.io/v1alpha2
kind: VirtualMachineInstance
metadata:
  creationTimestamp: null
  labels:
    special: vmi-pxe-boot
  name: vmi-pxe-boot
spec:
  domain:
    devices:

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apiVersion: v1
kind: Pod
metadata:
  name: cirros
spec:
  containers:
  - name: cirros
    image: cirros
    resources:
      limits:

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apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: cirros
spec:
  template:
    metadata:
      labels:
        app: cirros-sleep
    spec: