Kubectl for cluster management in Azure - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is kubectl used for in Kubernetes?

kubectl is a command-line tool that lets you communicate with and manage Kubernetes clusters. It helps you deploy applications, inspect and manage cluster resources, and view logs.

beginner

How do you configure kubectl to connect to an Azure Kubernetes Service (AKS) cluster?

You use the Azure CLI command az aks get-credentials --resource-group <group> --name <cluster-name> to download and merge the cluster's access credentials into your local kubeconfig file. Then kubectl uses this config to connect.

beginner

What does the command kubectl get pods do?

This command lists all the pods running in the current namespace of your Kubernetes cluster. Pods are the smallest deployable units that hold your containers.

intermediate

Explain the purpose of kubectl apply -f <file>.

This command applies the configuration in the specified file to the cluster. It creates or updates resources like deployments or services based on the file's content.

beginner

How can you check the logs of a pod using kubectl?

Use kubectl logs <pod-name> to see the logs of a specific pod. This helps you understand what is happening inside the containers.

Which command downloads AKS cluster credentials for kubectl?

A az login

B kubectl config use-context

C az aks get-credentials

D kubectl create cluster

az aks get-credentials downloads and merges the cluster credentials into your kubeconfig file for kubectl to use.

What does kubectl get nodes show?

A List of cluster nodes

B List of pods

C List of services

D List of deployments

This command lists all the worker machines (nodes) in your Kubernetes cluster.

How do you update a deployment using kubectl?

A kubectl apply -f deployment.yaml

B kubectl delete deployment

C kubectl get deployment

D kubectl logs deployment

kubectl apply -f updates or creates resources defined in the file.

Which kubectl command shows detailed info about a pod?

A kubectl exec <pod-name>

B kubectl get pods

C kubectl logs <pod-name>

D kubectl describe pod <pod-name>

kubectl describe pod shows detailed information including events and status.

What is the default namespace kubectl commands operate in if none is specified?

A admin

B default

C production

D kube-system

By default, kubectl commands work in the default namespace unless you specify another.

Describe the steps to connect kubectl to an Azure Kubernetes Service cluster.

Think about how kubectl knows which cluster to talk to.

Explain how kubectl helps you manage pods in a Kubernetes cluster.

Focus on commands related to pods.