1. Deploy the thanos-config helm chart on Digital Ocean Kubernetes Service


    To deploy the thanos-config Helm chart on DigitalOcean Kubernetes Service (DOKS), you'll need to start by creating a Kubernetes cluster on DigitalOcean. Once the cluster is up and running, you can install the Helm chart by leveraging the Pulumi Kubernetes provider. Below is a comprehensive guide on how to accomplish this task step by step using Pulumi with TypeScript.

    Step 1: Setting up a DigitalOcean Kubernetes Cluster

    First, you create a Kubernetes cluster in DigitalOcean using the digitalocean.KubernetesCluster resource. You'll specify the region, the version of Kubernetes, and define the node pool where your applications will run. A node pool is a group of nodes within a Kubernetes cluster that have identical configurations.

    Step 2: Installing Helm and the Thanos Helm Chart

    After your Kubernetes cluster has been provisioned, the next step is to install the Helm chart for Thanos. Pulumi's Kubernetes provider supports the deployment of Helm charts directly into your cluster using the kubernetes.helm.v3.Chart resource.

    In the following program, replace "your-doks-cluster-name" with your desired cluster name, "sf-2" with the slug of the region you want your cluster to be in, and "s-2vcpu-2gb" with the type of Droplets (nodes) you'd like in your node pool. If you know the specific version of Kubernetes you want to use, replace "latest" with that version.

    Below is a TypeScript program that demonstrates these steps:

    import * as pulumi from '@pulumi/pulumi'; import * as digitalocean from '@pulumi/digitalocean'; import * as kubernetes from '@pulumi/kubernetes'; // Step 1: Create a DigitalOcean Kubernetes cluster const cluster = new digitalocean.KubernetesCluster("do-cluster", { // Replace these values with your desired settings name: "your-doks-cluster-name", region: "sfo2", version: "latest", // Or specify a precise version nodePool: { name: "default", size: "s-2vcpu-2gb", // Droplet size nodeCount: 2, // Number of nodes in the pool }, }); // Step 2: Deploy the thanos-config Helm chart // First, we need to create a Kubernetes provider instance using the kubeconfig from the newly created cluster const k8sProvider = new kubernetes.Provider("do-k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig, }); // Now, we deploy Thanos chart to the cluster using the Helm chart resource const thanosChart = new kubernetes.helm.v3.Chart("thanos-chart", { chart: "thanos", // The repository where the chart can be found. Replace with actual repository if it's different. repo: "bitnami", // You can specify the namespace where you want to install the chart. Here it's the default namespace. namespace: "default", // If your chart requires additional values, provide them here. Below is just an example and might not fit the actual requirements of the thanos-config chart. values: { objstoreConfig: { bucket: "<bucket-name>", endpoint: "<bucket-endpoint>", // Other configuration values specific to your object store... }, // Add more configuration as needed... }, }, { provider: k8sProvider }); // Export the public IP to access the Thanos querier if available export const thanosQuerierIp = thanosChart.getResourceProperty("v1/Service", "thanos-query", "status") .apply(status => status.loadBalancer.ingress[0].ip);

    This program will set up a Kubernetes cluster and then deploy the Thanos Helm chart to it. The values object within the thanosChart resource should be updated with the actual configuration that your Thanos chart requires. Replace placeholder values like <bucket-name> and <bucket-endpoint> with the actual values for your object storage, which Thanos uses to store metrics data.

    After these resources are defined, you can simply run pulumi up from your terminal (assuming you have Pulumi CLI installed), and Pulumi will handle the provisioning and deployment process for you.

    Understanding the Resources

    • digitalocean.KubernetesCluster: Provisions a Kubernetes cluster in DigitalOcean. This represents the managed Kubernetes service provided by DigitalOcean, where your workloads will run. (KubernetesCluster Docs)

    • kubernetes.Provider: This is a Pulumi resource that provides a way for Pulumi to communicate with your Kubernetes cluster. It uses the kubeconfig output of the DigitalOcean Kubernetes cluster to interact with the cluster. (Kubernetes Provider Docs)

    • kubernetes.helm.v3.Chart: This resource is responsible for installing a Helm chart into a Kubernetes cluster. Helm is a package manager for Kubernetes, which allows you to define, install, and upgrade complex Kubernetes applications. (Helm Chart Docs)

    • values: This is an object where you define the configuration of your Helm chart. The values specified in this object must correspond to the ones expected by the Helm chart you are deploying. It is similar to passing a values.yaml file when using Helm on the command line.

    Running and Managing Your Pulumi Program

    Install Pulumi CLI and log in to your Pulumi account if you haven't already. Then, navigate to your project directory in the terminal where this Pulumi program is saved, and run:

    pulumi up

    This command will start the deployment process defined by the Pulumi program. Pulumi will provide a preview of the resources that will be created and, upon confirmation, proceed to provision them accordingly.

    After the deployment is successful, Pulumi will output any exported variables such as thanosQuerierIp, which can be used to interact with your newly-deployed Thanos instance on DigitalOcean Kubernetes.

    You can also manage the lifecycle of your infrastructure directly from the Pulumi Console by viewing resource states, history, and performing updates and rollbacks as needed.