A documentation of my experience with creating a kubernetes cluster on my Mac using kind
Kind installation on Mac was easy and smooth using brew brew install kind
Let's try creating a 'Hello World' kind of cluster. As we know that kind uses docker containers to create nodes, I am interested to know about the size of the images. A quick peek at their docker hub repository gives us the necessary informations
| Image Name | OS | Size |
|---|---|---|
| kindest/base | ubuntu | ~108 MB |
| kindest/node | ubuntu | ~458 MB |
It would be interesting to see if these images can be build out of alpine, I am sure there would have been some issues or else these folks would have done it themselves. But that is a project for another day !!
lets get our hands dirty a little
Creating a cluster
kind create cluster --name efk-basic
Checking the cluster
kubectl cluster-info --context kind-efk-basic
Kubernetes master is running at https://127.0.0.1:53382
CoreDNS is running at https://127.0.0.1:53382/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
Get cluster details
kind get clusters
Deleting clusters
kind delete cluster
Docker images can be loaded easily to your cluster
kind load docker-image my-custom-image-0 my-custom-image-1 --name my-cluster-name
Thats a cool feature so your development process will look like
docker build ...
kind load ...
kubectl apply ...
Ok, we are able to bring up a simple cluster using kind, now I am interested to see if the cluster can seamlessly work with helm. Obviously helm should be installed
brew install helm
I created a simple example helm chart following this blog, it worked like a charm.
Summerising what we have done till now.
- We tried out kind, and created a simple cluster
- We verified if helm3 is working with this cluster using a hello-world available in the repository.
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The plan
Create a multinode cluster
Deploy Nginx Ingress
Deploy a REST API backend server
Deploy EFK
Configure EFK to monitor logs
Multinode cluster was sucessfully created using the kind.yaml available in the repository. Just run the below command
kind create cluster --config kind.yaml
kind delete cluster --name rnd-cluster
Nginx ingress was deployed gracefuly using helm
helm repo add nginx-stable https://helm.nginx.com/stable
helm repo update
helm install nginx-release nginx-stable/nginx-ingress
I created a simple REST API microservice and created helm chart for same and deployed it into the cluster. Please go through the readme sections in the main project and under deploy for details.