Deploy Prometheus to an Existing AWS EKS Cluster

export AWS_REGION=us-west-2
export EKS_CLUSTER_NAME=mycluster

curl -sSL -o ebs-csi-policy.json https://raw.githubusercontent.com/kubernetes-sigs/aws-ebs-csi-driver/master/docs/example-iam-policy.json

export EBS_CSI_POLICY_NAME=AmazonEBSCSIPolicy
aws iam create-policy \
--region $AWS_REGION \
--policy-name $EBS_CSI_POLICY_NAME \
--policy-document file://ebs-csi-policy.json

export EBS_CSI_POLICY_ARN=$(aws --region $AWS_REGION iam list-policies --query 'Policies[?PolicyName==`'$EBS_CSI_POLICY_NAME'`].Arn' --output text)

echo $EBS_CSI_POLICY_ARN
# arn:aws:iam::12345678:policy/AmazonEBSCSIPolicy

eksctl create iamserviceaccount \
  --cluster $EKS_CLUSTER_NAME \
  --name ebs-csi-controller-irsa \
  --namespace kube-system \
  --attach-policy-arn $EBS_CSI_POLICY_ARN \
  --override-existing-serviceaccounts --approve

helm repo add aws-ebs-csi-driver https://kubernetes-sigs.github.io/aws-ebs-csi-driver
helm repo update

helm upgrade --install aws-ebs-csi-driver \
  --version=1.2.4 \
  --namespace kube-system \
  --set serviceAccount.controller.create=false \
  --set serviceAccount.snapshot.create=false \
  --set enableVolumeScheduling=true \
  --set enableVolumeResizing=true \
  --set enableVolumeSnapshot=true \
  --set serviceAccount.snapshot.name=ebs-csi-controller-irsa \
  --set serviceAccount.controller.name=ebs-csi-controller-irsa \
  aws-ebs-csi-driver/aws-ebs-csi-driver

kubectl get pod -n kube-system -l "app.kubernetes.io/name=aws-ebs-csi-driver,app.kubernetes.io/instance=aws-ebs-csi-driver"

# Add helm repositories for Prometheus
helm repo add kube-state-metrics https://kubernetes.github.io/kube-state-metrics
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts

# Install Prometheus
helm upgrade -i prometheus prometheus-community/prometheus \
  --namespace prometheus \
  --set alertmanager.persistentVolume.storageClass="gp2",server.persistentVolume.storageClass="gp2"

export POD_NAME=$(kubectl get pods --namespace prometheus -l "app=prometheus-pushgateway,component=pushgateway" -o jsonpath="{.items[0].metadata.name}")

To Configure

kubectl port-forward -n prometheus deploy/prometheus-server 8081:9090 &
open http://localhost:8081