About

Container that shows details about the environment its running on.

It will:

• Show the request method, url, and headers.
• Show the client and server address.
• Show the container environment variables.
• Show the container tokens, secrets, and configs (config maps).
• Show the container pod name and namespace.
• Show the containers running inside the container pod.
• Show the container memory limits.
• Show the container cgroups.
• Configure the Go runtime to honour the defined kubernetes container memory and cpu resource limits with the GOMEMLIMIT and GOMAXPROCS environment variables.
• Expose as a Kubernetes LoadBalancer Service.
  • Note that this results in the creation of an EC2 Classic Load Balancer (CLB).
• Use Role and RoleBinding.
• Use ConfigMap.
• Use Secret.
• Use ServiceAccount.
• Use Service Account token volume projection (a JSON Web Token and OpenID Connect (OIDC) ID Token) for the https://example.com audience.

When running in Azure Kubernetes Service (AKS), it will also:

• List the DNS Zones hosted in Azure DNS using the Azure Workload Identity authentication (see the rgl/terraform-azure-aks-example repository).

When running in Amazon Elastic Kubernetes Service (EKS), it will also:

• List the DNS Zones hosted in AWS Route 53 using the EKS Pod Identities authentication (see the rgl/terramate-aws-eks-example repository).

This is used in:

• rgl/terraform-azure-aks-example
• rgl/terramate-aws-eks-example
• rgl/rancher-single-node-ubuntu-vagrant

Usage

Install docker, kind, and kubectl.

Create the local test infrastructure:

./.github/workflows/kind/create.sh

Access the test infrastructure kind Kubernetes cluster:

export KUBECONFIG="$PWD/kubeconfig.yml"
kubectl get nodes -o wide

Build and test:

./build.sh && ./test.sh && xdg-open index.html

Destroy the local test infrastructure:

./.github/workflows/kind/destroy.sh