Deploy the cronjob-backup-jenkins helm chart on Kubernetes
TypeScriptTo deploy a Helm chart on a Kubernetes cluster using Pulumi, you will need to use the
@pulumi/kubernetes
library. This library provides classes and functions that allow you to interact with Kubernetes resources, including Helm charts.A Helm chart is a collection of pre-configured Kubernetes resources that can be deployed as a package. In this case, you want to deploy a Helm chart that sets up a CronJob for backing up Jenkins. Assuming that you already have a Kubernetes cluster set up and your Helm chart is available in a repository, you can use the
Chart
class from the Pulumi Kubernetes provider.Here's an overview of the steps we'll follow in the code:
- Import the necessary Pulumi packages.
- Create a new Pulumi Kubernetes Chart resource, specifying the Helm chart details such as name, chart, and values (if required).
- Export any pertinent information, such as the CronJob name or the Kubernetes namespace where it is deployed.
Below is the TypeScript code that defines the deployment of the
cronjob-backup-jenkins
Helm chart:import * as k8s from '@pulumi/kubernetes'; // Step 1: Reference to the Kubernetes cluster // Note: It is assumed that the Pulumi program is configured to connect to your Kubernetes cluster. // Make sure your `kubeconfig` is set up correctly. // Step 2: Deploy the `cronjob-backup-jenkins` Helm chart const cronjobBackupChart = new k8s.helm.v3.Chart('cronjob-backup-jenkins', { // Replace this with the repository where your chart is located. // If your chart is in a public repository, specify `repo: '<repo-url>'`. // If your chart is local, specify `path: '<path-to-your-chart>'`. chart: 'cronjob-backup-jenkins', version: '1.0.0', // Specify the chart version if necessary namespace: 'jenkins', // Specify the namespace where you want to deploy values: { // Override default values from the chart here, if needed // Example: // persistence: { // size: "10Gi", // }, }, fetchOpts: { // If the chart is in a private repository, set the access credentials here }, }); // Step 3: Export the namespace and release name export const namespace = cronjobBackupChart.namespace; export const releaseName = cronjobBackupChart.getResourceProperty('v1/Service', 'jenkins', 'metadata.name');
In this Pulumi program:
- We start by importing the Pulumi Kubernetes library, which we'll use to interact with our Kubernetes cluster.
- We assume that you have already configured Pulumi with access to your Kubernetes cluster. This typically involves setting up your
kubeconfig
file to point to your cluster. - We create a Helm chart instance using the
k8s.helm.v3.Chart
class, specifying the necessary details such as the chart name. In thevalues
property of the Chart, you can provide customized configuration values that will override the chart's defaults. This could include persistent volume sizes, image versions, resource limits, and more, according to the chart'svalues.yaml
. - We're also assuming that the chart version is
1.0.0
and that it's placed within thejenkins
namespace. Please adjust according to the actual chart version and desired namespace. - If you are using a private repository for your Helm chart, provide the necessary credentials in
fetchOpts
. If it's a local chart or from a public repository, you can comment out or remove thefetchOpts
property. - After deploying the chart, we export the namespace and release name. This information can be useful for fetching the CronJob status or other details via
kubectl
or the Kubernetes API.
To run this Pulumi program:
- Install Pulumi and set up your Pulumi account.
- Install Node.js and npm, as Pulumi uses Node.js for TypeScript execution.
- Create a new directory for your Pulumi project and navigate into it.
- Run
pulumi new kubernetes-typescript
to create a new Pulumi Kubernetes Typescript project. - Replace the contents of
index.ts
with the code provided above. - Adjust the chart name, version, path or repository URL, and any values you wish to override to match your chart's requirements.
- Run
pulumi up
to preview and deploy the changes. - Check the output of
pulumi up
for the namespace and release name, which are exported.
Remember, Pulumi programs are real code, so you can integrate them with other software development processes, such as version control, testing, and CI/CD pipelines.