Deploy the ironic helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the Ironic Helm chart on OpenShift using Pulumi, we'll utilize the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes provider. This resource enables you to manage Helm chart deployments within Kubernetes clusters, and it's suitable for deploying charts on OpenShift, which is a Kubernetes distribution with additional features.

Here's how to do it:

1. First, make sure you have access to an OpenShift cluster and that you've set up the `kubectl` command-line tool with the appropriate context to communicate with your OpenShift cluster. Pulumi uses the configuration from `kubectl` to interact with your Kubernetes cluster.

2. Install Pulumi on your local machine, configure it, and create a new Pulumi project if you haven't already done so.

3. Write a Pulumi program in TypeScript that uses the `kubernetes.helm.v3.Chart` resource to deploy the Ironic Helm chart.

Below is the detailed TypeScript program that performs this deployment:

```typescript
import * as k8s from "@pulumi/kubernetes";

// Define the settings for the Ironic Helm chart.
const ironicChart = new k8s.helm.v3.Chart("ironic", {
    chart: "ironic",
    version: "X.Y.Z", // Replace this with the correct chart version you want to deploy
    fetchOpts: {
        repo: "https://example.com/helm/charts", // Replace with the correct Helm chart repository URL
    },
    // Specify the OpenShift namespace where the Ironic Helm chart should be deployed.
    // If the namespace does not exist, it will need to be created beforehand.
    namespace: "openstack", 
    // Customize the values file according to your requirements for the Ironic deployment.
    values: {
        // ... insert your configuration values here ...
    },
}, {
    // Specify the provider if you manage multiple Kubernetes clusters with Pulumi.
    // If you're only working with one, Pulumi will use the default context set in your kubeconfig.
    // provider: myOpenshiftProvider, // Uncomment if using a custom provider
});

// When you run `pulumi up`, this Pulumi program will deploy the Ironic Helm chart to your OpenShift cluster.
```

In this program, you'll need to replace `"X.Y.Z"` with the version number of the Ironic Helm chart you wish to install and set the `repo` field to point to the correct Helm chart repository URL that hosts the Ironic chart.

After you have replaced the placeholders with the correct information and set the configuration values as needed, you can deploy the chart to your OpenShift cluster with the following Pulumi CLI command:

```shell
pulumi up
```

This command will initiate the deployment process, where Pulumi interprets your TypeScript code, sends the appropriate instructions to OpenShift to deploy the Ironic Helm chart, and reports back the deployment status. Once the deployment is successful, Ironic will be running in your OpenShift cluster in the namespace you specified.

For further customization of the Helm chart deployment, you can modify the `values` field in the `ironicChart` to reflect any custom settings you need for Ironic.

Make sure to check the [Pulumi Kubernetes provider documentation](https://www.pulumi.com/docs/reference/pkg/kubernetes/helm/v3/chart/) to understand all the available properties and options you can use with `kubernetes.helm.v3.Chart`.

This is a basic introduction to deploying Helm charts on OpenShift with Pulumi. Depending on your needs, you might need to adjust your OpenShift security context, considering OpenShift's stricter default security policies compared to standard Kubernetes.