First in class complex post-AI blockchain-less nextgen advanced opensource end-to-end scalable multicloud SaaS smart product for high-loaded secure high performance computing systems

Powered with cutting edge Foretold Termination™ technology (saves time on container unload), famous "less than 10 seconds" calculator on kubernetes.

Prerequisites

• docker
• kind (or any other k8s cluster)
• kubectl
• helm

Installation and usage

kind cluster with ingress preparation:

# cluster creation with `kind`
kind create cluster --config=./kind.yaml

# ingress NGINX controller
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/kind/deploy.yaml

# wait until is ready to process requests running
kubectl wait --namespace ingress-nginx \
  --for=condition=ready pod \
  --selector=app.kubernetes.io/component=controller \
  --timeout=90s

k8-calc installation:

# installation
helm install k8-calc k8-calc/

# verification -- should output "69"
curl localhost/k8_calc

For different calculation you have two options:

1. re-deploy with new expression argument
   • helm install k8-calc k8-calc/ --set expression=%your_expression%
   • check localhost/k8_calc
2. change ConfigMap inside current deployment
   • run kubectl edit configmap calculateme-configmap
   • change calculateme: 60+9 line, save and exit text editor
   • check localhost/k8_calc

To remove everything:

• run kind delete cluster

How it works

• There is env string variable calculateme defined in the ConfigMap
• A busybox pod runs it through bc, writes an answer to a file in the mounted volume and dies
• A nginx pod mounts this file as index.html, so it is accessible via an HTTP request
• The Reloader watches ConfigMap and restarts busybox pod if it changed