1. Deploy the cronjob-backup-jenkins helm chart on Google Kubernetes Engine (GKE)


    To deploy a cronjob that backs up Jenkins using a Helm chart on Google Kubernetes Engine (GKE), we'll perform several steps using Pulumi. The process involves the following key tasks:

    1. Create a GKE cluster where our Jenkins and the backup cronjob will run.
    2. Install the Helm chart for Jenkins, if not already done.
    3. Deploy the cronjob-backup-jenkins Helm chart to set up the backup process.

    We'll create a Pulumi program that performs these steps. Pulumi allows us to define our infrastructure as code using familiar programming languages, such as TypeScript, which we will use here.

    Here's a detailed breakdown of each step in TypeScript:


    Make sure you have installed Pulumi and configured it to use GCP. You will also need kubectl installed to interact with the cluster once it's up, and Helm to manage chart deployments.

    Step 1: Create a GKE Cluster

    First, we need a Kubernetes cluster on GKE where we can deploy Jenkins and the backup cronjob. Pulumi makes it easy to provision a GKE cluster using the @pulumi/gcp package.

    Step 2: Deploy Jenkins using Helm

    After the cluster is up, we can use Pulumi's @pulumi/kubernetes package to deploy Jenkins to the cluster using its Helm chart. The Helm chart handles the Kubernetes deployment, service, and other necessary resources.

    Step 3: Deploy the Backup CronJob using Helm

    Finally, we need to define and deploy the backup cronjob. Assuming that there is a Helm chart called cronjob-backup-jenkins which sets up a Kubernetes CronJob to backup Jenkins, we'll deploy that to our cluster as well.

    Below is the full Pulumi program in TypeScript:

    import * as gcp from "@pulumi/gcp"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Provision the GKE cluster. const cluster = new gcp.container.Cluster("pulumi-gke-cluster", { initialNodeCount: 2, minMasterVersion: "latest", nodeVersion: "latest", nodeConfig: { machineType: "n1-standard-1", oauthScopes: [ "https://www.googleapis.com/auth/compute", "https://www.googleapis.com/auth/devstorage.read_only", "https://www.googleapis.com/auth/logging.write", "https://www.googleapis.com/auth/monitoring" ], }, }); // Export the Cluster name export const clusterName = cluster.name; // Export the Kubeconfig to access the cluster with kubectl export const kubeconfig = cluster.name.apply(name => { const cluster = gcp.container.getCluster({ name: name, location: cluster.location, }); const context = `${gcp.config.project}_${cluster.location}_${cluster.name}`; return `apiVersion: v1 clusters: - cluster: certificate-authority-data: ${cluster.masterAuth[0].clusterCaCertificate} server: https://${cluster.endpoint} name: ${context} contexts: - context: cluster: ${context} user: ${context} name: ${context} current-context: ${context} kind: Config preferences: {} users: - name: ${context} user: auth-provider: config: cmd-args: config config-helper --format=json cmd-path: gcloud expiry-key: '{.credential.token_expiry}' token-key: '{.credential.access_token}' name: gcp `; }); // Step 2: Deploy Jenkins via Helm Chart const jenkinsChart = new k8s.helm.v3.Chart("jenkins", { chart: "jenkins", version: "2.6.4", fetchOpts:{ repo: "https://charts.bitnami.com/bitnami", }, }, { provider: new k8s.Provider("gkeK8s", { kubeconfig }) }); // Step 3: Deploy the backup cronjob via Helm Chart const backupCronJobChart = new k8s.helm.v3.Chart("backup-cronjob", { // Replace with the actual chart name and version for the cronjob-backup-jenkins Helm chart chart: "cronjob-backup-jenkins", version: "1.0.0", // Replace with the actual repository URL or local path to the Helm chart for cronjob-backup-jenkins fetchOpts:{ repo: "http://your-helm-chart-repository.com", }, // Define any values we need to pass into our CronJob Helm chart here: values: { schedule: "0 2 * * *", // This cron schedule is an example, adjust it according to your needs // Additional configuration for the backup job can go here, if the Helm chart requires it }, }, { provider: new k8s.Provider("gkeK8s", { kubeconfig }) }); // Export the Helm release names export const jenkinsReleaseName = jenkinsChart.releaseName; export const backupCronJobReleaseName = backupCronJobChart.releaseName;


    • We created a new GKE cluster with two nodes.
    • We defined a provider that uses the generated kubeconfig. This provider is necessary for Pulumi to interact with our GKE cluster.
    • We deployed Jenkins to our cluster using the Bitnami Helm chart. The chart's repository is specified, and it will install Jenkins with the default values unless you specify your own.
    • Then, we deployed the backup cronjob using another Helm chart, cronjob-backup-jenkins. You will need to modify the chart, version, and repo attributes according to the actual Helm chart you are using, as well as provide the necessary values for the backup cronjob.
    • We exported the kubeconfig and Helm release names so that we can interact with our cluster and deployed applications using kubectl and check the status of our Helm releases.

    Make sure to adjust the cronjob-backup-jenkins chart details and repository information according to the actual Helm chart you would like to use for backing up Jenkins.

    After writing this program, you should deploy it by running pulumi up. Pulumi will provision the infrastructure and apply the configurations as described above. Always review the execution plan that Pulumi provides before confirming the deployment to prevent unintended changes.