Ingress Nginx controller with authentication

Ingress

Links

• Kind Ingress

Prerequisites

1. Create Kubernetes cluster using kind:

task cluster-create

2. Configure ingress

task cluster-ingress-setup

3. Define DNS names on local machine e.g.:

vi /etc/hosts

and add 3 FQDNs for localhost:

127.0.0.1       localhost podtato.example.com podinfo.example.com foobar.example.com

Bearer Token

1. Setup Kubernetes dashboard:

task dashboard-ingress-setup

2. Access dashboard https://localhost:8443

OAuth proxy

GitHub

1. Configure GitHub OAuth application in https://github.com/settings/applications/new:
   
2. Provision OAuth proxy:

task oauth-proxy-setup

3. Create podinfo app:

task app-podinfo-setup

4. Check app https://podinfo.example.com/

Microsoft Entra ID

1. Configure app registration

az login

terraform init
terraform apply -auto-approve
terraform output -raw client_id > client_id.txt
terraform output -raw client_secret > client_secret.txt
terraform output -raw sp_id > sp_id.txt
terraform output -raw tenant_id > tenant_id.txt
terraform output -raw group_id > group_id.txt
terraform output -raw oidc_issuer_url > oidc_issuer_url.txt

2. Check app registration

az account subscription list
az ad app list

3. Provision OAuth proxy:

task oauth-proxy-setup

4. Create podinfo app:

task app-podinfo-setup

5. Check app https://podinfo.example.com/

Basic authentication

1. Provision Basic authentication
2. Create podtato:

task app-podtato-setup

3. Access app https://podtato.example.com/

Client certificate authentication

1. Provision Client certificate authentication
2. Create foo-bar app:

task app-foo-bar-setup

3. Check app bar and foo:

task app-foo-bar-check

More information:

• SSL/TLS in Learning CI/CD
• Add SSL / TLS Certificate or .PEM file to Kubernetes’ Pod’s trusted root ca store

Gateway API

Links

• Gateway API
• Implementations:
  • Blixt - load balancer for K8s
  • NGINX Gateway Fabric

Prerequisites

1. Create Kubernetes cluster using kind:

kind create cluster --config code/single-node-extra-port-mapping-gateway-api.yaml --name home-lab

2. Deploy blixt

kubectl apply -k https://github.com/kubernetes-sigs/gateway-api/config/crd/experimental?ref=v1.2.1

cd ..
git clone https://github.com/kubernetes-sigs/blixt

make build.all.images TAG=latest
make load.all.images TAG=latest
kubectl apply -k config/default

3. Deploy ``:

kubectl kustomize "https://github.com/nginx/nginx-gateway-fabric/config/crd/gateway-api/standard?ref=v1.6.2" | kubectl apply -f -

helm install ngf oci://ghcr.io/nginx/charts/nginx-gateway-fabric --create-namespace -n nginx-gateway --set service.create=false

kubectl apply -f code/gateway-api-node-port.yaml

4. Create cafe application:

kubectl apply -f code/app-cafe.yaml

5. Define DNS names on local machine e.g.:

vi /etc/hosts

and add 1 FQDNs for localhost:

127.0.0.1       localhost cafe.example.com

6. Check application:

kubectl describe httproutes
kubectl describe gateways

curl --resolve cafe.example.com:8080:127.0.0.1 http://cafe.example.com:8080/coffee
curl --resolve cafe.example.com:8080:127.0.0.1 http://cafe.example.com:8080/tea