AKS Bootcamp

Tools

1. Azure CLI
2. kubectl: az aks install-cli
3. Lens: An IDE to visually navigate Kubernetes
4. Terraform: Automated infrastructure install
5. Docker Desktop (OPTIONAL): This lets you have a local kubernetes instance to play with

Excercises

Prerequisite: get the access token for terraform state store account

export ARM_ACCESS_KEY=$(az storage account keys list -g "Sandbox-base" --subscription "Transact Dev Sandbox" --account-name tcdemos --query "[?keyName=='key1'].value | [0]" -o tsv)

STEP 1: Deploy an AKS cluster using Terraform

cd infrastructure/terraform-infra
terraform init
terraform apply

STEP 2: Connect to the AKS cluster

az aks get-credentials -g RG-US-East2-bootcamp --admin -n AKS-US-East2-bootcamp

STEP 3: Create a Namespace

kubectl create namespace myname
kubectl config set-context --current --namespace myname

STEP 4: Deploy Basic Application

cd applications
kubectl apply -k whereami

Connect to one of the pods

kubectl get pods
kubectl port-forward pod/<pod-id> 8080 

Browse to http://localhost:8080

STEP 5: Deploy Application with External Service

Edit the applications/whereami/kustomize.yaml file to uncomment the line that says service-lb.yaml

resources:
- ksa.yaml
- deployment.yaml
- configmap.yaml
- service-lb.yaml
#- service-internal.yaml
#- ingress.yaml

Then run

cd applications
kubectl apply -k whereami
kubectl get services -w

Wait for an external IP then browse to http://external-ip-from-above

STEP 6: Deploy Application with Ingress Comtroller

Edit the applications/whereami/kustomize.yaml file as below

resources:
- ksa.yaml
- deployment.yaml
- configmap.yaml
# service-lb.yaml
- service-internal.yaml
- ingress.yaml

Edit the applications/whereami/ingress.yaml file to replace the host

- host: bootcamp.myname.io

Then run

cd applications
kubectl apply -k whereami
kubectl get services -w

Poison your etc/hosts

external-ip-from-above bootcamp.myname.io

Then browse to http://bootcamp.myname.io

Kubectl Cheatsheet

• kubectl cluster-info : Print the address of the master and cluster services
• kubectl exec pod_name -- ls / : Run command in an existing pod
• kubectl get pod|service|deployment|ingress|... -o wide : List all information about a resource with more details
• kubectl config get-contexts : Gets configured clusters in the kubeconfig file
• kubectl config use-context docker-dekstop : Sets the current-context (cluster in use) in a kubeconfig file
• kubectl config set-context --current --namespace=namespace : sets the default namespace

Other Resources

1. Monitoring (See Lab 5 here)