ec2 node type preferred:

Family: Storage Optimized, best suited for low latency, high IOPS workloads like relational DBs. Cost: 0.177 per instance per hour for OD - 129.12 USD / month Storage: gp2 SSD based EBS volume - 20 GB (2.28 USD / month)

PostgreSQL server replicas: 2 [need to verify if postgresql helm chart supports a master/slave or a backup replica feature on k8s] - this would also mean two EBS volumes instead of one.

Changes in values file: architecture: replication primary:

nodeSelector:

[node.kubernetes.io/instance-type:](<http://node.kubernetes.io/instance-type:>) i3.large

persistence:

size: 20 Gi

readReplicas:

replicaCount: 2

For monitoring set-up with prometheus-stack, update this in the values file as well:

metrics:
  enabled: true
  prometheusRule:
    enabled: true
    namespace: prometheus-46xitb-srgcgk #namespace where Prom Stack is deployed
  serviceMonitor:
    additionalLabels:
      release: my-release #prom stack release name
    enabled: true
    labels:
      release: my-release #prom stack release name
    namespace: prometheus-46xitb-srgcgk #namespace where Prom Stack is deployed