1. Deploy the glowroot helm chart on Digital Ocean Kubernetes Service


    To deploy the Glowroot Helm chart on the Digital Ocean Kubernetes Service, you will need to accomplish a few major steps:

    1. Set up and configure a DigitalOcean Kubernetes (DOKS) cluster.
    2. Configure your local environment to interact with the cluster.
    3. Install Helm, which is a tool that streamlines installing and managing Kubernetes applications.
    4. Use Helm to deploy the Glowroot chart to your DOKS cluster.

    Below is a Pulumi TypeScript program that performs the first step: provisioning a DOKS cluster using Pulumi's DigitalOcean provider. The remainder of the steps would be carried out using kubectl and helm commands locally or through automation scripts, but here I'll focus on the initial infrastructure setup with Pulumi:

    import * as digitalocean from "@pulumi/digitalocean"; // Create a DigitalOcean Kubernetes cluster const cluster = new digitalocean.KubernetesCluster("glowroot-cluster", { region: digitalocean.Regions.NYC1, version: "latest", // Select the latest supported Kubernetes version for DOKS nodePool: { name: "glowroot-pool", size: digitalocean.DropletSlugs.DropletS2VCPU2GB, nodeCount: 2, // Set the number of nodes you want in your node pool tags: ["glowroot-cluster"], } }); export const kubeconfig = cluster.kubeConfigs[0].rawConfig; // Export the kubeconfig

    In this script:

    • We import the digitalocean module from Pulumi's DigitalOcean provider to interact with DigitalOcean resources.
    • We create a Kubernetes cluster using new digitalocean.KubernetesCluster which sets up a cluster in the NYC1 region using the latest version of Kubernetes supported by DOKS.
    • The cluster's node pool is configured with a specific Droplet size and node count. You can adjust these according to your needs.
    • We export the raw kubeconfig, which you would use to configure kubectl for interacting with your Kubernetes cluster.

    You must have Pulumi set up and configured with DigitalOcean. After running this Pulumi program, proceed with installing Helm and deploying the Glowroot Helm chart to the newly created cluster:

    To install Helm, follow the official Helm installation guide.

    Once Helm is installed, you can add the Glowroot Helm chart repository and deploy Glowroot with commands like the following (these commands are to be run in your terminal, not in the Pulumi program):

    # Add Glowroot Helm chart repository (replace this with the actual Glowroot Helm chart repository URL) helm repo add glowroot https://glowroot-charts.example.com/ # Update your local Helm chart repository cache helm repo update # Install the Glowroot Helm chart into your Kubernetes cluster helm install glowroot glowroot/glowroot -n glowroot --create-namespace

    Replace the repository URL and chart name with the actual ones for Glowroot.

    Remember to configure kubectl to use the kubeconfig exported by the Pulumi program:

    export KUBECONFIG=./kubeconfig.yaml

    Where ./kubeconfig.yaml should contain the kubeconfig data outputted by the Pulumi program after deployment.

    These steps will set up Glowroot in your DigitalOcean Kubernetes cluster, and you should be able to access it based on the service type defined in the Helm chart (e.g., via LoadBalancer, NodePort, etc.).