Deploy the mysql8 helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the MySQL 8 Helm chart on Azure Managed OpenShift Service using Pulumi, you need to perform the following steps:

1. **Create an Azure Managed OpenShift Cluster**: Set up an OpenShift cluster on Azure using the `azure-native.containerservice.OpenShiftManagedCluster` resource. This defines the necessary Kubernetes infrastructure on Azure.

2. **Install Helm and the MySQL Chart on OpenShift**: Deploy the MySQL 8 Helm chart onto the OpenShift cluster with the `kubernetes.helm.v3.Chart` resource, specifying the required chart name and version.

### Detailed Breakdown:

**Azure Managed OpenShift Cluster**:
We will first create the OpenShift cluster using the `OpenShiftManagedCluster` resource from the `azure-native` provider. This resource will help set up the cluster in an existing resource group with a specified location and version.

**Helm Chart for MySQL**:
Once the OpenShift cluster is up and running, we will deploy MySQL using a Helm chart. We'll specify the MySQL chart from the desired Helm repository, and we will configure it using the `values` property.

### Pulumi Program:

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

// Set up an Azure Managed OpenShift cluster
const openShiftManagedCluster = new azureNative.containerservice.OpenShiftManagedCluster("myOpenShiftCluster", {
    // Replace these with appropriate values
    resourceGroupName: "myResourceGroup",
    resourceName: "myOpenShiftCluster",
    location: "westus", // Specify the desired Azure location
    openShiftVersion: "4.3", // Specify the OpenShift version
    masterPoolProfile: {
        // Define the master node pool profile
        count: 3,
        vmSize: "Standard_D4s_v3",
        subnetCidr: "10.0.0.0/24",
    },
    agentPoolProfiles: [
        // Define the agent pool profile
        {
            name: "agentpool",
            role: "compute", // This is the default role
            count: 3,
            vmSize: "Standard_D4s_v3",
            subnetCidr: "10.0.0.0/24",
        },
    ],
    networkProfile: {
        vnetId: "myVnetId", // Provide your Virtual Network ID
        vnetCidr: "10.0.0.0/8",
        managementSubnetCidr: "10.0.1.0/24",
    },
    // Set more properties as needed
});

// Define the Kubernetes provider to deploy Helm charts
const k8sProvider = new kubernetes.Provider("k8sProvider", {
    kubeconfig: openShiftManagedCluster.kubeconfig.apply(JSON.stringify),
});

// Deploy MySQL 8 using Helm chart
const mysqlChart = new kubernetes.helm.v3.Chart("mysqlChart", {
    chart: "mysql",
    version: "8.x.x", // Specify the version of the MySQL chart you want to deploy
    namespace: "default",
    fetchOpts: {
        repo: "https://charts.bitnami.com/bitnami", // MySQL chart repository
    },
    values: {
        // Customize the Helm chart values here
        // For the default values of the MySQL Helm chart, visit: https://bitnami.com/stack/mysql/helm
        // Example: set the MySQL root password
        auth: {
            rootPassword: "mySuperSecurePassword",
        },
    },
}, { provider: k8sProvider });

// Export the public URL for the MySQL instance
export const mysqlUrl = pulumi.interpolate`mysql://${mysqlChart.getResourceProperty("v1/Service", "mysql", "status").loadBalancer.ingress[0].ip}`;
```

### Explanation:

- We declare the OpenShift cluster using `azureNative.containerservice.OpenShiftManagedCluster`. Essential properties include the location, resource group, and cluster version. More properties can be set as per your requirements.
  
- The `k8sProvider` uses the output of the OpenShift cluster to get the Kubernetes configuration (`kubeconfig`), which is required to interact with the cluster.

- The `mysqlChart` represents the MySQL Helm chart. We specify the chart version and provide any custom values such as authentication credentials. Replace these with your values or refer to the chart's documentation for all configurable options.

- We export `mysqlUrl`, which would be the address of your MySQL service. This URL is constructed from the `loadBalancer.ingress` property of the MySQL service which will be provisioned by the Helm chart.

Make sure to replace placeholders (`myResourceGroup`, `myVnetId`, `mySuperSecurePassword`, etc.) with actual values before running this program.

Before running this Pulumi program, ensure:
- You are authenticated with Azure.
- Pulumi CLI is installed and configured.
- You have installed the necessary NPM packages (`@pulumi/azure-native`, `@pulumi/kubernetes`, `@pulumi/pulumi`).

Finally, run `pulumi up` to start the deployment. After the deployment is complete, Pulumi will output the MySQL service URL, which you can use to connect to your MySQL instance.