Deploy the istio-release-operator helm chart on Kubernetes
TypeScriptTo deploy the
istio-release-operator
Helm chart on Kubernetes using Pulumi, we will use thekubernetes.helm.v3.Chart
resource from the Pulumi Kubernetes provider. This resource allows you to declare a Helm chart to be installed into your Kubernetes cluster.First, make sure you have:
- Pulumi CLI installed and set up. You can find instructions on installing Pulumi here.
- Kubernetes cluster running and
kubectl
is correctly configured to connect to your cluster. - Have access to the Helm chart repository where
istio-release-operator
is located.
Here's how you can deploy the
istio-release-operator
Helm chart:-
Import Necessary Packages: We start by importing the
@pulumi/kubernetes
package which provides the necessary methods to interact with Kubernetes and deploy Helm charts. -
Create a Helm Chart Resource: The
kubernetes.helm.v3.Chart
class is instantiated to create the Helm chart resource. This class takes the chart name, and additional options such as the repository where the chart is hosted, the version of the chart to deploy, and any custom values you want to specify for your Istio operator configuration. -
Provide Configuration Values: Helm charts may require or allow configuration options to be specified. You can provide these as an object with keys and values matching the chart’s values.yaml file. If you have a custom
values.yaml
file, you can also read it and provide its contents.
Here is the TypeScript code that accomplishes this:
import * as kubernetes from "@pulumi/kubernetes"; // Define the name of the chart and the repository details. const chartName = "istio-operator"; const chartRepo = "https://istio-release.storage.googleapis.com/charts"; const chartVersion = "x.y.z"; // Replace with a specific chart version. // Optional: Specify the custom values you want to use for this deployment. // Replace the values below with the ones appropriate for your deployment. const customValues = { // Lots of possible customizations, depending on your requirements. // Reference the istio-operator's values.yaml for available options. // Example: // pilot: { // autoscaleEnabled: true, // traceSampling: 1.0, // } }; // Deploying the chart to the Kubernetes cluster. const istioReleaseOperatorChart = new kubernetes.helm.v3.Chart(chartName, { chart: chartName, version: chartVersion, fetchOpts: { repo: chartRepo, }, values: customValues, }); // Export any required resource details, such as an endpoint. export const istioOperatorEndpoint = "check-istio-operator-endpoint"; // Replace with a real endpoint or value if necessary.
The
fetchOpts
block inside theChart
class constructor is where you specify the Helm repository containing theistio-release-operator
chart. You also specify the chart version you wish to deploy withchartVersion
. If you don't specify a version, Pulumi will by default choose the latest one available.The
values
field is an object that specifies configuration overrides that align with the options provided by the chart'svalues.yaml
. For each field in the Helm chart'svalues.yaml
, you can provide a corresponding key-value pair in thecustomValues
object.Once you run this Pulumi program with
pulumi up
, it will reach out to the specified Helm repository, pull the chart, and apply it to your Kubernetes cluster taking into account all the custom values you have defined.When deploying Helm charts that are critical pieces of cluster infrastructure like the Istio operator, you should ensure you're pinning to a specific version of the chart, as represented by
chartVersion
, to maintain consistency and predictability.After the
pulumi up
command completes, it will show you any resources that were created or modified during the deployment. The export at the bottom is a placeholder where you could export certain output parameters of the deployment, such as the endpoint for the Istio operator if applicable.Keep in mind that deploying Istio into a cluster can involve more configuration options based on your specific needs. It’s important to tailor the
customValues
to match the recommendations for your particular use case. Always refer to the official Istio documentation when deciding on these values.