Deploy the OneUptime helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the OneUptime Helm chart on Oracle Kubernetes Engine (OKE), you'll need to accomplish the following steps:

1. Set up the Oracle Kubernetes Engine (OKE) cluster.
2. Install the Helm CLI tool which is used for deploying Helm charts.
3. Find the Helm chart for OneUptime. Usually, Helm charts are hosted in a chart repository, but they can also be located in a version-controlled directory.
4. Define the configuration for the Helm release, within Pulumi, to deploy OneUptime to your OKE cluster.

I'll walk you through how to write a Pulumi program in TypeScript to deploy the OneUptime Helm chart. The program will use the `oci.ContainerEngine.Cluster` resource to create an OKE cluster, and the `kubernetes.helm.v3.Chart` resource to deploy the OneUptime Helm chart.

Below is the Pulumi program that you can use to deploy the OneUptime Helm chart to an OKE cluster. Make sure you have the Pulumi CLI installed and OCI (Oracle Cloud Infrastructure) provider configured with the necessary credentials.

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as oci from "@pulumi/oci";
import * as k8s from "@pulumi/kubernetes";

// Step 1: Create the OKE cluster
const cluster = new oci.ContainerEngine.Cluster("my-oke-cluster", {
    // Specify the necessary properties for your cluster.
    // This includes the compartment ID, VCN (Virtual Cloud Network) configuration,
    // node pool configuration, Kubernetes version, and other settings.
    // You will need to replace the placeholders with actual values.
    compartmentId: "ocid1.compartment.oc1..xxxxxx",
    vcnId: "ocid1.vcn.oc1..xxxxxx",
    kubernetesVersion: "v1.18.10",
    name: "my-oke-cluster",
    options: {
        ... // additional OKE configuration
    },
    // You can add additional properties here as per your requirements.
});

// Step 2: Use the Kubernetes provider to work with the cluster
// To interact with the cluster, you will need to use the Kubeconfig
// that the cluster resource provides
const k8sProvider = new k8s.Provider("my-k8s-provider", {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Step 3: Define the configuration for deploying the OneUptime Helm chart
const oneUptimeChart = new k8s.helm.v3.Chart("oneuptime", {
    chart: "oneuptime",
    // Assuming 'oneuptime' is the name of the Helm chart.
    // You will need to specify the correct chart name and repository details,
    // or a local path if the chart is stored locally.
    fetchOpts: {
        repo: "https://helm-repo-url/where/chart/is-located",
    },
    // Specify the appropriate namespace if needed
    namespace: "default",
    // If the Helm chart requires any values to be overridden,
    // specify them here under 'values'.
    values: {
        ... // values to override default chart values
    },
}, { provider: k8sProvider });

// Step 4: Export relevant endpoints
export const kubeconfig = cluster.kubeconfig.apply(JSON.stringify);
export const oneUptimeEndpoint = oneUptimeChart.getResourceProperty("v1/Service", "default", "oneuptime", "status").apply(s => s.loadBalancer.ingress[0].ip);

```

### Explanation

In the program above:

- We import the required Pulumi packages, including OCI for managing Oracle Cloud Infrastructure resources, and Kubernetes for deploying Kubernetes-related resources.

- We create an OKE cluster using the `oci.ContainerEngine.Cluster` resource, providing it with configurations such as the compartment ID, VCN ID, and Kubernetes version.

- We utilize the kubeconfig from the created cluster to set up a Kubernetes provider instance.

- Using this Kubernetes provider, we deploy the OneUptime Helm chart using the `k8s.helm.v3.Chart` resource. This assumes a Helm chart name of "oneuptime", and you will replace the `repo` property with the actual repository containing the OneUptime Helm chart.

- Finally, we export the kubeconfig and the OneUptime service endpoint. The endpoint is retrieved from the deployed Helm chart's service resource which facilitates access to the service outside the cluster, assuming it exposes such endpoints.

### Conclusion

After running `pulumi up` with this program, Pulumi will provision the resources needed to deploy the OneUptime Helm chart onto the Oracle Kubernetes Engine.

Keep in mind, Helm charts require specific configuration which varies based on the application's needs; hence it's critical to refer to the OneUptime Helm chart documentation for configuration details. If OneUptime application exposes external endpoints, the specific Service resource will specify the endpoint of your service post-deployment.