cluster

Terraform a new Azure Kubernetes Cluster

Based on the following Terraform example.

Assumes:

• Azure credentials are passed as environment variables
  • See ARM_* arguments here

Local testing

Copy sample configuration

cp terraform.tfvars.sample terraform.tfvars

Edit terraform.tfvars

Amend the values for

• client_id
• client_secret
• cluster_name
• resource_group_name
• suffix
• aks_nodes
• aks_node_type
• aks_node_disk_size
• environment

Specify environment variables

export ARM_CLIENT_ID=xxx
export ARM_CLIENT_SECRET=xxx
export ARM_SUBSCRIPTION_ID=xxx
export ARM_TENANT_ID=xxx

Replace occurrences of xxx above with appropriate values

Create cluster

./create-cluster.sh

List available clusters

./list-clusters.sh

Update kubeconfig

Use the name and location of the cluster you just created to update kubeconfig and set the current context for kubectl

./set-kubectl-context.sh {AKS_CLUSTER_NAME} {RESOURCE_GROUP_NAME}

Teardown the cluster

./destroy-cluster.sh

Copying kubeconfig to bastion

For example

scp -i ~/.ssh/toolset-vm_rsa /home/cphillipson/.kube/aks-9f-config ubuntu@13.78.140.12:/home/ubuntu
ssh -i ~/.ssh/toolset-vm_rsa ubuntu@13.78.140.12
## Now that you're on the bastion you need set KUBECONFIG environment variable to connect
export KUBECONFIG=/home/ubuntu/aks-9f-config
kubectl get nodes -o wide
kubectl get po -A -o wide

Github Action

This action is workflow dispatched with inputs.

See azure-k8s-cluster-dispatch.yml

Troubleshooting

• Adjusting VM Quota Limits

Elsewhere

• tf4k8s