Deploy the Data on Kuberenetes K8ssandra Chart helm chart on Linode Kubernetes Engine
TypeScriptIn this Pulumi program, we are aiming to deploy a Helm chart for K8ssandra on a Linode Kubernetes Engine (LKE) cluster. K8ssandra is an open-source distribution of Apache Cassandra that comes packaged with management and repair services which are also open source. Helm charts are collections of files that describe a related set of Kubernetes resources and they simplify the deployment and management of applications on Kubernetes clusters.
To achieve this, we'll perform the following steps:
- Create an instance of an LKE cluster on Linode.
- Configure the Kubernetes provider to connect to the LKE cluster.
- Deploy the K8ssandra Helm chart into the cluster using the Kubernetes Helm Chart resource.
Below is the TypeScript program to perform these actions:
import * as pulumi from "@pulumi/pulumi"; import * as linode from "@pulumi/linode"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Create a Linode Kubernetes Engine (LKE) Cluster const clusterName = "k8ssandra-cluster"; const lkeCluster = new linode.LkeCluster(clusterName, { region: "us-central", k8sVersion: "1.20", nodePools: [{ count: 3, // The number of nodes in the node pool type: "g6-standard-2" // The type of Linode Instance to include in the node pool }] }); // Step 2: Configure the Kubernetes provider to connect to the LKE cluster // In a real-world scenario, you would likely need to use the Linode provider to get the kubeconfig. // For simplicity, I'm using a fictitious kubeconfig string. const kubeconfig = "your-kubeconfig-content-here"; const k8sProvider = new k8s.Provider("k8s-provider", { kubeconfig: kubeconfig }); // Step 3: Deploy the K8ssandra Helm chart into the LKE cluster const chartName = "k8ssandra"; const k8ssandraChart = new k8s.helm.v3.Chart(chartName, { chart: "k8ssandra", version: "1.0.0", // Specify the version of the chart you want to deploy fetchOpts: { repo: "https://helm.k8ssandra.io/", // The repository where the Helm chart is located }, namespace: "default", // The namespace where you want to install the chart }, { provider: k8sProvider }); // Export the cluster's kubeconfig and the service endpoint of K8ssandra. export const kubeconfigOutput = lkeCluster.kubeconfig; export const k8ssandraEndpoint = k8ssandraChart.getResource("v1/Service", `${chartName}-k8ssandra`);
To walk through each step:
- Step 1 creates a new Linode Kubernetes Engine cluster with 3 nodes using the
linode.LkeCluster
resource. - Step 2 sets up the Kubernetes provider with the kubeconfig of the LKE cluster so Pulumi can connect to and manage the Kubernetes cluster.
- Step 3 deploys the K8ssandra Helm chart into our Kubernetes cluster. The
k8s.helm.v3.Chart
resource is used here, which represents a Helm chart, allowing us to deploy third-party applications easily.
To apply this configuration, you'll have to replace
"your-kubeconfig-content-here"
with the actual kubeconfig content that you can retrieve from your Linode dashboard after the LKE cluster is up and running.The chart version chosen is
1.0.0
, which corresponds to a particular version of K8ssandra that we want to deploy. If you want the latest version or a different chart, you can change theversion
field accordingly.You'll need to install the following npm packages (
@pulumi/pulumi
,@pulumi/linode
,@pulumi/kubernetes
) to run this program.Keep in mind that managing cloud resources with infrastructure-as-code tools like Pulumi will incur costs according to your cloud provider's pricing. Always review the pricing details of the services you deploy to understand the associated costs.