m8yng

Setup Steps

1. Open Cloud Shell

• url: https://shell.azure.com/ switch to bash if not

2. Set target Subscrioption and Obtain kubeconfig

az account set --subscription $YourSubscriptionName_or_ID
az aks get-credentials --name $YourClusterName --resource-group $YourResourceGroup --overwrite-existing

3. Install krew and plugin inside Cloud Shell

m8yng

After node/vm instances deployed, to obtain updated DNS server setting from the Vnet, the host must be restarted.

To avoid rebooting every nodes, here is an unsafe way to restart the networkd in every nodes of the cluster:

kubectl apply -f https://gist.githubusercontent.com/m8yng/8d878b022c860b47344a16e4b1f9be1d/raw/b5d831c888716d53606f1cb586a9b220c565a1c0/z_restart-networkd.yaml

Make sure remove it once its done:

kubectl delete -f https://gist.githubusercontent.com/m8yng/8d878b022c860b47344a16e4b1f9be1d/raw/b5d831c888716d53606f1cb586a9b220c565a1c0/z_restart-networkd.yaml

m8yng

The Problem: Unable to execute .exe from WSL

The error:

$ powershell.exe
-bash: /mnt/c/WINDOWS/System32/WindowsPowerShell/v1.0/powershell.exe: cannot execute binary file: Exec format error

# or:

m8yng

Deploy one hostprocess (privileged) container on every windows nodes in AKS

kubectl apply -f https://gist.githubusercontent.com/m8yng/b8c4115cc9c86c391686b297e75969dd/raw/4b7c7f95ac8e859d998c4cd91b76f7f1eda10b27/z_hostprocess.yaml

Then, enter the container shell:

# get the list of running pod
kubectl get pods -l app=privileged-daemonset -n kube-system -o=custom-columns=NAME:.metadata.name --no-headers

m8yng

# Get the events
kubectl get events -l app=csi-azuredisk-node -n kube-system

# Get the logs
kubectl logs -l app=csi-azuredisk-node -n kube-system

m8yng

# az aks create with 1.25+ and `--network-plugin none`
$ az aks create -g $resourceGroup -n $clusterName --kubernets-version 1.25 --network-plugin none

# Install and deploy flannel
$ export podCidrSubnet="10.244.0.0/16"
$ helm repo add flannel https://flannel-io.github.io/flannel/
$ helm install flannel --set podCidr="$podCidrSubnet" --namespace kube-flannel flannel/flannel

# Manually update the pod CIDR subnet for each nodes