Prerequisites¶

Name: KubeElasti
Author: KubeElasti Authors

Kubernetes Cluster: You should have a running Kubernetes cluster. You can use any cloud-based or on-premises Kubernetes distribution.
kubectl: Installed and configured to interact with your Kubernetes cluster.
Helm: Installed for managing Kubernetes applications.
Prometheus: You should have a prometheus installed in your cluster.

Installing Prometheus

We will setup a sample prometheus to read metrics from the ingress controller.

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack \
  --namespace monitoring \
  --create-namespace \
  --set alertmanager.enabled=false \
  --set grafana.enabled=false \
  --set prometheus.prometheusSpec.serviceMonitorSelectorNilUsesHelmValues=false

Ingress Controller: You should have an ingress controller installed in your cluster.

Installing Ingress Controller

NGINXIstio

  helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
  helm repo update
  helm upgrade --install nginx-ingress ingress-nginx/ingress-nginx \
    --namespace nginx \
    --set controller.metrics.enabled=true \
    --set controller.metrics.serviceMonitor.enabled=true \
    --create-namespace

# Download the latest Istio release from the official Istio website.
curl -L https://istio.io/downloadIstio | sh -
# Move it to home directory
mv istio-x.xx.x ~/.istioctl
export PATH=$HOME/.istioctl/bin:$PATH

istioctl install --set profile=default -y

# Label the namespace where you want to deploy your application to enable Istio sidecar Injection
kubectl create namespace <NAMESPACE>
kubectl label namespace <NAMESPACE> istio-injection=enabled

# Create a gateway
kubectl apply -f ./playground/config/gateway.yaml -n <NAMESPACE>

KEDA: [Optional] You can have a KEDA installed in your cluster, else HPA can be used.

Installing KEDA

We will setup a sample KEDA to scale the target deployment.

helm repo add kedacore https://kedacore.github.io/charts
helm repo update
helm upgrade --install keda kedacore/keda --namespace keda --create-namespace --wait --timeout 180s