Using kubernetes networking.gke.io with awx.ansible.com

Question

Pulumi · Accepted Answer

In this scenario, we want to deploy an AWX instance, which is the upstream project for Ansible Tower, on a Google Kubernetes Engine (GKE) cluster using Pulumi. We aim to set up the GKE cluster and the required Kubernetes resources to get AWX up and running.

Here's an overview of the steps we'll take:

1. Import the necessary Pulumi packages for working with GKE.
2. Define and configure our GKE cluster in the desired location.
3. Set up the Kubernetes resources like namespaces, deployments, and services needed for AWX.
4. Deploy the AWX operator and create an AWX instance.

Let's dive into the code:

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

// Step 1: Set up a Google Kubernetes Engine (GKE) cluster
const cluster = new gcp.container.Cluster("awx-gke-cluster", {
    initialNodeCount: 3,
    nodeVersion: "latest",
    minMasterVersion: "latest"
});

// Export the GKE cluster's kubeconfig to connect to the cluster.
export const kubeconfig = cluster.endpoint.apply(endpoint => {
    return `apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: ${cluster.masterAuth[0].clusterCaCertificate}
    server: https://${endpoint}
  name: awx-cluster
contexts:
- context:
    cluster: awx-cluster
    user: awx-cluster-admin
  name: awx-cluster-context
current-context: awx-cluster-context
kind: Config
preferences: {}
users:
- name: awx-cluster-admin
  user:
    auth-provider:
      config:
        cmd-args: config view --minify --flatten
        cmd-path: gcloud
        expiry-key: '{.credential.token_expiry}'
        token-key: '{.credential.access_token}'
      name: gcp
`;
});

// Step 2: Connect to the GKE cluster
const provider = new k8s.Provider("awx-gke-k8s-provider", {
    kubeconfig: kubeconfig,
});

// Step 3: Set up Kubernetes resources for AWX
// In this step, we can define the necessary Kubernetes resources such as
// namespaces, deployments, and services.

// It is important to note that AWX has specific Kubernetes requirements.
// You'd need to deploy the AWX operator to your cluster first, and then create an
// AWX instance. Since these details can be quite extensive and depend on the
// specific version of AWX you intend to deploy, we recommend referring to the
// official AWX operator documentation for the latest details on these resources.
// You can find the AWX Operator documentation here:
// https://github.com/ansible/awx-operator

// Step 4: Deploy the AWX Operator and create an AWX instance
// We will not write the complete manifests here due to their complexity, but
// you would typically deploy the AWX operator with a set of Kubernetes manifests,
// and then create a CustomResourceDefinition that defines your AWX instance.
// These manifests should be obtained from the official AWX operator repository
// and configured according to your needs.

// As an example of how to apply such manifests using Pulumi:
const awxOperatorManifest = `
apiVersion: v1
kind: Namespace
metadata:
  name: awx
---
apiVersion: operators.coreos.com/v1
kind: OperatorGroup
metadata:
  name: awx-operator-group
  namespace: awx
spec:
  targetNamespaces:
  - awx
...
`;

const awxOperator = new k8s.yaml.ConfigGroup("awx-operator", {
    yaml: awxOperatorManifest
}, { provider });

// This is just a small sample, you'd continue with the resource definitions such as 
// the AWX CustomResourceDefinition and any other necessary RBAC resources.
```

In the code above, we've gone through the following steps:

- We created a GKE cluster using the `@pulumi/gcp` package. The cluster's configuration can be adjusted according to your specific needs (e.g., machine type, number of nodes, version, etc.).
- With Pulumi, we're able to export the `kubeconfig` for our cluster. This is important because it allows us to interact with our cluster using `kubectl` or other Kubernetes tools.
- We then switch to the `@pulumi/kubernetes` package to create a Kubernetes provider, which will use our cluster's `kubeconfig` to deploy resources to the cluster.
- Finally, we illustrate how one might deploy the AWX operator manifest using the `k8s.yaml.ConfigGroup`. Actual deployment would require additional manifests which you would usually acquire from the official AWX operator repository.

Remember to consult the AWX operator's official documentation on GitHub for the most up-to-date instructions and manifests for deploying AWX in a Kubernetes cluster. The AWX operator's resources are Kubernetes native, so you'll work with familiar kinds like `Deployment`, `Service`, `Namespace`, and possibly others, depending on the AWX version.

Feel free to adjust the code to match the particular version of AWX and its Kubernetes specifications you intend to deploy.