Setup kind cluster using cilium cni in wsl2

# %USERPROFILE%\.wslconfig
[wsl2]
kernel=C:\\kernel6

sudo apt-get install flex bison
sudo apt-get install make build-essential libncurses-dev bison flex libssl-dev libelf-dev
sudo apt-get -y install pahole

git clone https://github.com/microsoft/WSL2-Linux-Kernel.git --depth=1 -b linux-msft-wsl-6.1.y
cd WSL2-Linux-Kernel
# change https://docs.cilium.io/en/stable/operations/system_requirements/#linux-kernel
make -j$(nproc) KCONFIG_CONFIG=Microsoft/config-wsl
sudo make modules_install headers_install
cp arch/x86/boot/bzImage /mnt/c/kernel6

wsl --shutdown

# Check which modules are loaded (the list should be empty)
sudo lsmod

# Create a file to load the modules when the distro boots
## The first line of the modules.alias file is ignored as it's the header "Alias"
awk '(NR>1) { print $2 }' /usr/lib/modules/$(uname -r)/modules.alias | sudo tee /etc/modules-load.d/cilium.conf

# By default, the systemd-modules-load service fails due to the conditions not met
sudo systemctl status systemd-modules-load

# Edit the service and comment the conditions line from the "!container"
sudo vi /lib/systemd/system/systemd-modules-load.service
...
#ConditionVirtualization=!container
#ConditionDirectoryNotEmpty=|/lib/modules-load.d
#ConditionDirectoryNotEmpty=|/usr/lib/modules-load.d
#ConditionDirectoryNotEmpty=|/usr/local/lib/modules-load.d
#ConditionDirectoryNotEmpty=|/etc/modules-load.d
#ConditionDirectoryNotEmpty=|/run/modules-load.d
#ConditionKernelCommandLine=|modules-load
#ConditionKernelCommandLine=|rd.modules-load
...

# Reload the systemD daemon
sudo systemctl daemon-reload

# Restart the systemd-modules-load service
sudo systemctl restart systemd-modules-load

# [Optional] Check the systemd-modules-load service
sudo systemctl status systemd-modules-load

# Check the modules loaded
sudo lsmod

kind delete cluster && kind create cluster --config - <<EOF
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
networking:
  disableDefaultCNI: true
  kubeProxyMode: none
nodes:
- role: control-plane
  kubeadmConfigPatches:
  - |
    kind: InitConfiguration
    nodeRegistration:
      kubeletExtraArgs:
        node-labels: "ingress-ready=true"
  extraPortMappings:
  - containerPort: 80
    hostPort: 80
    listenAddress: 127.0.0.1
    protocol: TCP
  - containerPort: 443
    hostPort: 443
    listenAddress: 127.0.0.1
    protocol: TCP
- role: worker
- role: worker
- role: worker
EOF


helm upgrade --install --namespace kube-system --repo https://helm.cilium.io cilium cilium --values - <<EOF
kubeProxyReplacement: strict
k8sServiceHost: kind-control-plane
k8sServicePort: 6443
hostServices:
  enabled: false
externalIPs:
  enabled: true
nodePort:
  enabled: true
hostPort:
  enabled: true
image:
  pullPolicy: IfNotPresent
ipam:
  mode: kubernetes
hubble:
  enabled: true
  relay:
    enabled: true
  ui:
    enabled: true
    ingress:
      enabled: true
      annotations:
        kubernetes.io/ingress.class: nginx
      hosts:
        - hubble-ui.127.0.0.1.nip.io
EOF


kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.10.0/deploy/static/provider/kind/deploy.yaml