Hi!

In this article, I will show you how you can replace the Message of the Day on Linux nodes at cluster creation or node pool creation. When you first log in to a terminal on a Unix system, Linux included, you are usually greeted by that system’s message of the day(MOTD). The message of the day, gives you important information about the system or just messages from the system admin.

Cluster creation with a custom Message of the Day:

az aks create --cluster-name myAKSCluster --resource-group myResourceGroup --message-of-the-day ./newMOTD.txt

Nodepool creation with a custom Message of the Day:

az aks nodepool add --name mynodepool1 --cluster-name myAKSCluster --resource-group myResourceGroup --message-of-the-day ./newMOTD.txt

Maxime.

Hi!

This article shows how to deploy an AKS cluster with no CNI plugin pre-installed, which allows for installation of any third-party CNI plugin that works in Azure.

# Install the aks-preview extension
az extension add --name aks-preview

# Update the extension to make sure you have the latest version installed
az extension update --name aks-preview

# Create a resource group to create the cluster in
az group create -l <Region> -n <ResourceGroupName>

# create the cluster itself
az aks create -l <Region> -g <ResourceGroupName> -n <ClusterName> --network-plugin none

Maxime.

Hi!

In this article, we will see a new feature of AKS : Node Pool Snapshot.

AKS releases a new node image weekly and every new cluster, new node pool, or upgrade cluster will always receive the latest image that can make it hard to maintain your environments consistent and to have repeatable environments.

Node pool snapshots allow you to take a configuration snapshot of your node pool and then create new node pools or new clusters based of that snapshot for as long as that configuration and kubernetes version is supported.

Take a Node Pool Snapshot:

NODEPOOL_ID=$(az aks nodepool show --name nodepool1 --cluster-name myAKSCluster --resource-group myResourceGroup --query id -o tsv)

az aks snapshot create --name MySnapshot --resource-group MyResourceGroup --nodepool-id $NODEPOOL_ID --location eastus

Create a Node Pool from a Snapshot:

SNAPSHOT_ID=$(az aks snapshot show --name MySnapshot --resource-group myResourceGroup --query id -o tsv)

az aks nodepool add --name np2 --cluster-name myAKSCluster --resource-group myResourceGroup --snapshot-id $SNAPSHOT_ID

Upgrading a Node Pool from a Snapshot:

SNAPSHOT_ID=$(az aks snapshot show --name MySnapshot --resource-group myResourceGroup --query id -o tsv)

az aks nodepool upgrade --name nodepool1 --cluster-name myAKSCluster --resource-group myResourceGroup --snapshot-id $SNAPSHOT_ID

Create a cluster from a Snapshot:

SNAPSHOT_ID=$(az aks snapshot show --name MySnapshot --resource-group myResourceGroup --query id -o tsv)

az aks create --name myAKSCluster2 --resource-group myResourceGroup --snapshot-id $SNAPSHOT_ID

Maxime.