1. Deploy the postgres-instance helm chart on Kubernetes


    To deploy a PostgreSQL instance using Helm on a Kubernetes cluster with Pulumi, you would typically perform the following steps:

    1. Create a new Pulumi project and set up the necessary configurations for your Kubernetes provider.
    2. Utilize the Chart resource from the Pulumi Kubernetes provider to deploy a Helm chart.

    In this program, we will:

    • Define a Chart resource specifying the postgres-instance Helm chart.
    • Provide the necessary configurations for the PostgreSQL instance through the values property.
    • Deploy this chart to a pre-configured Kubernetes cluster.

    Below is a Pulumi TypeScript program that demonstrates how to deploy the postgres-instance Helm chart:

    import * as k8s from "@pulumi/kubernetes"; // Define the PostgreSQL Helm chart from a remote repository const postgresChart = new k8s.helm.v3.Chart("postgres-instance", { chart: "postgresql", version: "10.3.11", // Specify the version of the chart you want to deploy fetchOpts: { repo: "https://charts.bitnami.com/bitnami" // This is the Bitnami Helm charts repository }, // Provide values for the Helm chart's configurable options values: { global: { postgresql: { postgresqlUsername: "admin", postgresqlPassword: "P@ssw0rd!", postgresqlDatabase: "mydb" } } } }); // Export the Cluster IP of the PostgreSQL service export const postgresClusterIP = postgresChart.getResourceProperty( "v1/Service", "postgres-instance-postgresql", "spec" ).apply(spec => spec.clusterIP);

    In this code:

    • We import the Pulumi Kubernetes library, which allows you to interact with Kubernetes resources.
    • We create a new instance of a Helm chart with new k8s.helm.v3.Chart(), which represents a deployable unit of the postgresql Helm chart.
    • The chart parameter is the name of the chart we want to deploy, in this case, postgresql.
    • The version is the specific chart version we want to use.
    • fetchOpts.repo points to the repository where the Helm chart is hosted.
    • The values object allows us to specify configurations for the PostgreSQL deployment, such as the username, password, and default database name.
    • Lastly, we export the Cluster IP of the PostgreSQL service to be able to access the PostgreSQL instance once it's been deployed.

    If you have Pulumi CLI and Kubernetes configured, you can save this code to a index.ts file, execute pulumi up, and Pulumi will perform the deployment. Ensure that you have Helm installed on your system and that your Kubernetes cluster context is correctly set in your environment.