Monitoring deployed applications on AKS along with monitoring Kubernetes health is essential to provide reliable service to your customers. There are two primary use cases for monitoring:

• Debugging applications (used mostly when deploying/upgrading apps)
• On-going monitoring to get alerts if something is not behaving as expected

We will handle the first use case of debugging when deploying/upgrading applications. The same methodology also applies for debugging running applications for which the commands are as follows:

kubectl get xxx
kubectl logs xxx

Before we start, we are going to have a clean start with our guestbook example.

If you have guestbook already running in your cluster, delete it by running the following command on the Azure Cloud Shell:

kubectl delete -f guestbook-all-in-one.yaml

Recreate the guestbook again using the following command:

kubectl create -f guestbook-all-in-one.yaml

While the create command is running, we will watch the progress in the following sections.