1. Deploy the cassandra-web helm chart on Oracle Kubernetes Engine (OKE)


    To deploy the cassandra-web Helm chart on Oracle Kubernetes Engine (OKE), you will require a running Kubernetes cluster on OKE and helm, the package manager for Kubernetes, to handle the deployment of Cassandra Web.

    Pulumi provides a Kubernetes provider that can manage resources on any conformant Kubernetes cluster, and a Helm Release resource to handle Helm chart deployments.

    The following Pulumi TypeScript program performs these steps:

    1. Instantiate a Kubernetes cluster on Oracle Cloud Infrastructure (OCI), if you haven't one already.
    2. Use the Helm chart resource within the Pulumi Kubernetes provider to deploy cassandra-web.

    Ensure you have the following prerequisites satisfied before running the program:

    • Pulumi CLI installed and set up to manage resources on OCI.
    • Oracle Cloud Infrastructure (OCI) account with permissions to manage OKE.
    • An existing OKE cluster or using the program to create a new one.

    Here is the Pulumi TypeScript program to deploy cassandra-web on OKE:

    import * as oci from "@pulumi/oci"; import * as k8s from "@pulumi/kubernetes"; import * as pulumi from "@pulumi/pulumi"; // Replace these variables with appropriate values or retrieve them from the Pulumi config. const compartmentId = "oci-compartment-id"; const vcnId = "oci-vcn-id"; const subnetId = "oci-subnet-id-for-oke"; // Create an OKE cluster if not exists. const cluster = new oci.ContainerEngine.Cluster("my-cluster", { compartmentId, vcnId, options: { serviceLbSubnetIds: [subnetId], // Include any additional options you need for the OKE cluster. }, // Specify the version of Kubernetes you want to install. kubernetesVersion: "v1.20.11", // Other required properties for creating your OKE cluster. }); // Once the cluster is created, we need to get the cluster's kubeconfig for Pulumi to connect to. // We use a dynamic provider to assist with this. class OciKubeconfigProvider implements pulumi.dynamic.ResourceProvider { public async create(inputs: any): Promise<pulumi.dynamic.CreateResult> { const kubeconfigContent = await oci.ContainerEngine.getClusterKubeconfig({ clusterId: inputs.clusterId, }); return { id: inputs.clusterId, outs: { kubeconfig: kubeconfigContent.content }}; } } // The dynamic resource that uses the OciKubeconfigProvider to get the kubeconfig. const kubeconfigResource = new pulumi.dynamic.Resource( "kubeconfig", { clusterId: cluster.id }, { provider: new OciKubeconfigProvider() }, ); // Provider to interact with our new OKE cluster. const k8sProvider = new k8s.Provider("oke-k8s", { kubeconfig: kubeconfigResource.outputs.kubeconfig, }); // Deploy cassandra-web Helm chart on the OKE cluster using the Pulumi Kubernetes provider. const cassandraWebChart = new k8s.helm.v3.Chart("cassandra-web", { chart: "cassandra-web", // Helm repository where 'cassandra-web' is stored. fetchOpts: { repo: "https://helm-repository where cassandra-web is hosted/", }, // Any custom values you want to provide to the helm chart. values: { // Add any chart values here. }, }, { provider: k8sProvider }); // Export the necessary attributes so you can interact with or manage your resources. export const clusterName = cluster.name; export const cassandraWebEndpoint = cassandraWebChart.getResourceProperty("v1/Service", "cassandra-web", "status").apply(status => status.loadBalancer.ingress[0].ip);

    This program does the following:

    • Defines a cluster resource if you need to create a new Kubernetes cluster in OCI.
    • Defines a dynamic resource to fetch the kubeconfig of the cluster, which is required for Pulumi to deploy resources to it.
    • The kubeconfig is passed to a Pulumi Kubernetes provider which sets up the Kubernetes connection.
    • Deploys the cassandra-web Helm chart to the Kubernetes cluster with the k8s.helm.v3.Chart resource.

    To run this Pulumi program:

    1. Save the code in a file named index.ts.
    2. Run pulumi up to create the resources defined in the program.

    Remember to replace placeholder variables (oci-compartment-id, oci-vcn-id, and oci-subnet-id-for-oke, and the repo URL for the Helm chart) with actual values from your OCI environment. The program assumes you have a VCN and subnet already created for this purpose.