fitfab / 1st-chart

First Helm chart -- Kubernetes, Helm, Go

Helm Chart

As per: https://docs.bitnami.com/kubernetes/how-to/create-your-first-helm-chart/

Step 1. Generate Your First Chart

helm create mychart

Helm will create a new directory in your project called mychart with the structure shown below.

mychart
|-- Chart.yaml
|-- charts
|-- templates
|   |-- NOTES.txt
|   |-- _helpers.tpl
|   |-- deployment.yaml
|   |-- ingress.yaml
|   `-- service.yaml
`-- values.yaml

We can do a dry-run of a helm install and enable debug to inspect the generated definitions:

with a --generate-name flag

helm install --generate-name --dry-run --debug ./mychart

with a name

helm install miguel --dry-run --debug ./mychart

Step 2. Deploying Your First Chart

The chart you generated in the previous step is setup to run an NGINX server exposed via a Kubernetes Service. By default, the chart will create a ClusterIP type Service, so NGINX will only be exposed internally in the cluster. To access it externally, we’ll use the NodePort type instead.

helm install example3 ./mychart --set service.type=NodePort

Note: --set service.type=NodePort overrides the value found on line# 34 in the values.yaml

service:
  type: ClusterIP

YOU MUST FORWARD THE PORT IN ORDER TO SEE IT IN THE BROWSER

kubectl port-forward svc/example3-mychart 7000:80

So now you have access to the cluster via: http://localhost:7000