Howto

Setup Cluster

Go to https://my.vultr.com/kubernetes/add/ for:

• Cluster Name: private-infra-cluster
• Kubernetes Version (at time of writing): v1.24.3+2
• Cluster Location: Frankfurt
• Cluster Capacity (node pool):
  • Label: pool-1
    • Node Pool Type: Regular Cloud Compute
    • 1 CPU, 2 GiB RAM, 55 GiB storage, 2000 GB bandwidth
    • 3 nodes

(Note: you may dowload the specific cluster config to some vke-*.yaml and activate it in bash with export KUBECONFIG=<FILE>)

Estimated Monthly Cost:

• three nodes: $30
• static IP (load balancer): $10

Deploy

• for static IP, see static-ip-svc.yaml (this is a separate service, so the actual load balancer, e.g. nginx, can be cycled without loosing the static IP; see https://kubernetes.github.io/ingress-nginx/examples/static-ip/ or https://github.com/kubernetes/ingress-nginx/tree/main/docs/examples/static-ip)
• for nginx loadbalancer from https://artifacthub.io/packages/helm/ingress-nginx/ingress-nginx, see the helm chart section in base/kustomization.yaml

Problem here the nginx still uses an own IP instead of the static IP

Deploy (apply) the configuration with:

kubectl kustomize kustomization/base --enable-helm | kubectl apply -f -

Dangerous Rollback (delete) configuration with:

kubectl kustomize kustomization/base --enable-helm | kubectl delete -f -