Deploy the php-stack helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy a PHP stack Helm chart on Azure Managed OpenShift Service using Pulumi, you will need to perform the following steps:

1. Set up an Azure Managed OpenShift cluster.
2. Deploy the PHP stack Helm chart on the cluster.

Here's how you can accomplish this with Pulumi in TypeScript:

First, you will use the `azure-native.containerservice.OpenShiftManagedCluster` resource which represents an Azure OpenShift Managed Cluster. To create an Azure OpenShift Managed Cluster, you must specify several properties such as the location, the OpenShift version, and the agent pool profiles which define the size and number of nodes in the cluster.

After setting up the Managed OpenShift cluster, the next step is to install the PHP stack Helm chart. You will use the `kubernetes.helm.v3.Chart` resource to deploy the Helm chart on your Kubernetes cluster. You’ll need to point to the Helm repository where the PHP stack chart is located and specify any custom values if required.

Here is the Pulumi program which demonstrates these steps:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as azure_native from "@pulumi/azure-native";
import * as k8s from "@pulumi/kubernetes";

// Create an Azure Resource Group
const resourceGroup = new azure_native.resources.ResourceGroup("myResourceGroup", {
    location: "East US",
});

// Create an Azure OpenShift Managed Cluster
const cluster = new azure_native.containerservice.OpenShiftManagedCluster("myOpenShiftCluster", {
    location: resourceGroup.location,
    resourceGroupName: resourceGroup.name,
    openShiftVersion: "v4.3", // specify the OpenShift version
    networkProfile: {
        vnetCidr: "10.0.0.0/8",
    },
    masterPoolProfile: {
        name: "masterpool", // naming the master node pool
        count: 3, // number of master nodes
        vmSize: "Standard_DS3_v2", // VM size for the master nodes
    },
    agentPoolProfiles: [{
        name: "default", // name of the agent pool
        count: 3, // number of nodes in the pool
        vmSize: "Standard_DS3_v2", // VM size for nodes
        role: "compute", // specifying the role as compute
    }],
});

// Use K8s provider to interact with the OpenShift cluster
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: cluster.config.kubeconfig,
});

// Deploy the PHP stack Helm chart on the OpenShift cluster
const phpStackChart = new k8s.helm.v3.Chart("php-stack", {
    chart: "php",
    version: "1.0.0", // specify the chart version
    fetchOpts: {
        repo: "http://charts.yourcompany.com/", // replace with the Helm repository URL
    },
}, { provider: k8sProvider });

// Export the OpenShift cluster's kubeconfig
export const kubeconfig = cluster.config.kubeconfig;
```

Explanation:

- `ResourceGroup`: This resource creates an Azure Resource Group that will contain our OpenShift cluster.
- `OpenShiftManagedCluster`: This resource provisions the OpenShift cluster in the specified resource group and location.
- `k8s.Provider`: This tells Pulumi how to communicate with the Kubernetes/OpenShift cluster that we just provisioned by using the kubeconfig output of the cluster.
- `Chart`: This resource represents a Helm chart for deploying applications on Kubernetes/OpenShift clusters. We reference our OpenShift cluster as this Helm chart’s provider, so that the Helm chart is deployed into the cluster we created.

Remember to replace `"http://charts.yourcompany.com/"` with the actual Helm repository URL where the PHP stack chart is located. If there are additional values you need to configure for the PHP stack Helm chart, such as configurations for the PHP runtime, you can include them in the `values` field within the `Chart` resource.

Lastly, you can run the `pulumi up` command to deploy this configuration on Azure. After the deployment, you will receive a kubeconfig file that you can use to interact with your OpenShift cluster.