demoapp-helm-charts

Helm Charts for deploying demoapp to Kubernetes and OpenShift

Deployment to Kubernetes

Prerequisites:

1. Kubernetes Cluster

Steps:

1. Install NGINX Ingress Controller

# Pull Helm Chart
helm pull oci://ghcr.io/nginxinc/charts/nginx-ingress --untar
cd nginx-ingress

# Apply CRDs
kubectl apply -f crds/

# Create `nginx-ingress` namespace
kubectl create ns nginx-ingress

# Set current namespace to `nginx-ingress`
kubectl config set-context `kubectl config current-context` --namespace nginx-ingress
kubectl config get-contexts

# Install Helm Chart
helm install nginx-ingress . -n nginx-ingress

# Check pods
watch oc get pods

# Get `nginx` Ingress Class
oc get ingressclass nginx

# Go back to previous working directory
cd -

2. Create demo namespace

# Create `demo` namespace
kubectl create ns demo

# Set current namespace to `demo`
kubectl config set-context `kubectl config current-context` --namespace demo
kubectl config get-contexts

3. Create demoapp nginx master ingress

kubectl apply -f deploy/demoapp-nginx-master.yaml -n demo

4. Deploy demoapp-backend

cd charts/demoapp-backend
helm dependency update .
helm upgrade -i demoapp-backend . \
  -n demo \
  --values values-docker-desktop.yaml
cd -

5. Deploy demoapp-frontend

cd charts/demoapp-frontend
helm dependency update .
helm upgrade -i demoapp-frontend . \
  -n demo \
  --values values-docker-desktop.yaml
cd -

Deployment to OpenShift Local

Prerequisites:

1. Red Hat OpenShift Local

Steps:

1. Create demo project

# Login to OpenShift Local
oc login -u kubeadmin https://api.crc.testing:6443

# Create project
oc new-project demo

2. Deploy demoapp-backend

cd charts/demoapp-backend
helm dependency update .
helm upgrade -i demoapp-backend . \
  --values values-openshift-local.yaml

3. Deploy demoapp-frontend

cd charts/demoapp-frontend
helm dependency update .
helm upgrade -i demoapp-frontend . \
  --values values-openshift-local.yaml