This repository contains a demonstration presented at Microsoft Build 2018 that uses Terraform to run, deploy and update an application on a Kubernetes cluster on Azure.
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Azure subscription: If you don't have an Azure subscription, create a free account before you begin.
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Install Terraform: Follow the directions in the article, Terraform and configure access to Azure
- DataDog API Key: This demonstration instantiate monitoring of the Kubernetes cluster with DataDog. In order to enable the monitoring of your cluster you need and API Key from DataDog and set this key in the following environment variable:
TF_VAR_DATADOG_API_KEY=xxxxxxxxxxxxx
- Authenticate with azure: Authenticate against the azure using a Service Principal and set the following environment variables:
TF_VAR_ARM_CLIENT_ID=xxxxxxxxxxxxxxx
TF_VAR_ARM_CLIENT_SECRET=xxxxxxxxxxxxxxx
- Clone the current repository
git clone https://github.com/dcaro/build2018.git
- Go into the
0-demofolder and run the following command
terraform apply -var location=centralus
You can specify any location that supports AKS. Confirm the deployment when asked to do so. The deployment will take some minutes to complete.
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Edit the
2-kubernetes.tffile to deploy the application using the terraform provider for Kubernetes. Remove the comment on line 1 and 48 and save the file. -
Run the following command to apply only the differences from the previous step:
terraform apply -var location=centralus
Note and save the FQDN of the application displayed as an output of the command.
- Run the following command to get the logs of the HTTP Application Routing DNS:
kubectl logs -f deploy/addon-http-application-routing-external-dns -n kube-system --kubeconfig ./modules/kubernetes-ingress/kubeconfig
- Try to access the application using the DNS name that you noted earlier.
- Run the following command:
terraform apply -var app_replicas=3