Deploy the onlyoffice helm chart on Linode Kubernetes Engine

Question

Pulumi · Accepted Answer

Deploying the OnlyOffice Helm chart on the Linode Kubernetes Engine (LKE) involves creating a Kubernetes cluster in Linode, then using Helm to install the OnlyOffice application within that cluster. Below is a step-by-step guide followed by a Pulumi program in TypeScript that accomplishes this task.

### Step 1: Set up the Linode Kubernetes Cluster
First, we'll need to create a Kubernetes cluster on Linode. We'll use Pulumi's `linode` provider to configure the cluster with the desired settings, such as region, node count, and node type.

### Step 2: Configure Helm and Install OnlyOffice Chart
Once we have our Kubernetes cluster, we will use Helm to deploy the OnlyOffice chart. We'll make use of the `kubernetes` provider in conjunction with Helm resources like `Chart` or `Release` provided by Pulumi for this purpose.

Please note that Pulumi works programmatically, just like a regular programming language, and you manage its resources as you would manage other objects in code. Now, let's see the Pulumi program in TypeScript:

```typescript
import * as pulumi from '@pulumi/pulumi';
import * as k8s from '@pulumi/kubernetes';
import * as linode from '@pulumi/linode';

// Step 1: Create a Linode Kubernetes Cluster
const cluster = new linode.KubernetesCluster('onlyoffice-cluster', {
    region: 'us-central', // Specify the desired region for the cluster
    k8sVersion: '1.21',   // Specify the version of Kubernetes
    tags: ['pulumi-lke'],
    pool: {
        type: 'g6-standard-2',  // Specify the node type
        count: 3,               // Define the number of nodes
    },
});

// Step 2: Install OnlyOffice using a Helm Chart
const onlyofficeChart = new k8s.helm.v3.Chart('onlyoffice', {
    chart: 'onlyoffice-documentserver',  // Chart name for OnlyOffice
    version: 'x.y.z',                    // Specify the version of the chart
    fetchOpts: {                         // You might need to specify a repository if it's not in the default Helm repo
        repo: 'https://helm.onlyoffice.com/',
    },
    // Values can be set to customize the OnlyOffice installation
    values: {
        // Here you would define any values that customize the chart to your needs
    },
}, { provider: new k8s.Provider('k8s-provider', { kubeconfig: cluster.kubeconfig }) });

// Export the cluster's kubeconfig and the OnlyOffice endpoint
export const kubeconfig = cluster.kubeconfig;
export const onlyofficeEndpoint = onlyofficeChart.getResourceProperty('v1/Service', 'onlyoffice', 'status').apply(status => status.loadBalancer.ingress[0].ip);
```

In the code above:
- We define a Linode Kubernetes cluster with a certain node type and count in a specific region.
- We then define a Helm chart for OnlyOffice, providing the chart name and fetching options.
- The `values` object within the Helm chart module allows you to customize the installation with your preferred settings.
- Last but not least, we export the `kubeconfig` to interact with our cluster and the endpoint IP address for OnlyOffice, which can be used to access the OnlyOffice application once it is deployed.

Make sure to replace `'x.y.z'` with the actual OnlyOffice chart version you wish to deploy. Additionally, the configuration within the `values` can be adjusted as per the OnlyOffice Helm chart documentation to customize your OnlyOffice deployment.

To run this program, you will need to set up Pulumi with the required providers and have Linode API access set up. Once the Pulumi program is executed, it will handle the provisioning of the resources as per the defined configuration.