Single script Kubernetes cluster (Runs on Docker)

K3d

./install_k3d_kubernetes_cluster.sh

Kind

./install_kind_kubernetes_cluster.sh

Requirements

• Docker service running

How to

For local tests

The script will create a single node k8s cluster for your local tests

./install_k3d_kubernetes_cluster.sh example.com

If you have a domain_name you can run with Let's Encrypt SSL

The script will create a single node k8s cluster for your tests using Let's Encrypt certificates

# Use second parameter for let's encrypt staging and prd
./install_k3d_kubernetes_cluster.sh domain_name [stg|[prd]] [email protected]

Note: email address must be valid.

When running on local for example.com it creates...

• Single node kind k8s cluster running on docker containers
• Insecure docker registry running on http://local.registry:5001
• Dashboard running on https://dashboard.example.com
• Hello world deployment running on https://hello.example.com

Kind mlti-node cluster

To change the configuration from single to multi-node k8s cluster, just add workers as you need around line 55-57.

Example on how to add two workers:

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
  - role: control-plane
  ...
  - role: worker
  - role: worker

Certificate validation (for local example.com)

In order to get rid of the certificate not trusted error for your ingress and test URLs, this artifact is using https://github.com/gespinal/ssl-wildcard-certificate-self-ca to generate and install a wildcard certificate for the domain *.example.com.

I recommend using Edge or Safari to test certificate. Firefox gives some trouble with CACHE and cert validation when re-created. Haven't tested this on Chrome.

In case of Firefox:

Go to: about:config

Set: security.enterprise_roots.enabled to true

This is a powerful, compact, practical and simple solution to anyone that needs a totally functional k8s cluster on the fly.