paulczar / gcp-cloud-compute-operator

gcp operator for kubernetes

Google Cloud Platform Operator

This is a demo operator for the Google Cloud Platform which simplifies requesting google cloud resources in the form on Kubernetes Manifests.

The goal of the Operator is to provide a bare minimum set of Kubernetes CRDs to enable provisioning GCP services. To enable this the manifest Specs are generally a 1:1 mapping to the GCP API objects.

Currently supports creating and destroying the following GCP Services:

Note: the Kubernetes resource spec for your requests should match the GCP Go SDK structures.

• Compute
  • Addresses
  • Images
  • Firewalls
  • Networks
  • Subnetworks
  • Forwarding Rules
  • Target Pools
  • Instances
• IAM
  • Service Accounts
• DNS
  • ManagedZone
  • RecordSet

Add new gcp compute service

API=dns.google.golang.org/v1 KIND=Record
operator-sdk add api --api-version=$API --kind=$KIND
operator-sdk add controller --api-version=$API --kind=$KIND

Annotations

You can set the following Annotations:

Annotation	Description
compute.gce/project-id	Sets the GCP Project ID if different to that used in operator service account
iam.gce/serviceAccountName	Sets the service account name for service account keys
iam.gce/secretName	Sets the secret name for service account keys
iam.gce/secretNamespace	Sets the secret namespace for service account keys

Example Usage

Create a namespace to run the operator in:

kubectl create namespace gcp-operator

Create a secret containing your GCP account credentials:

kubectl -n gcp-operator create secret \
    generic gcp-operator \
  --from-file=google.json=/path/to/credentials.json

If using GKE you need to ensure your user has the cluster admin role binding:

kubectl create clusterrolebinding cluster-admin-binding \
    --clusterrole=cluster-admin --user=<your gcp account email address>
clusterrolebinding.rbac.authorization.k8s.io/cluster-admin-binding created

Deploy the GCP Operator:

kubectl -n gcp-operator apply -f deploy/service_account.yaml
kubectl -n gcp-operator apply -f deploy/role.yaml
kubectl -n gcp-operator apply -f deploy/role_binding.yaml
kubectl -n gcp-operator apply -f deploy/operator.yaml

Deploy the CRDs:

kubectl apply -f deploy/crds/compute_v1_address_crd.yaml
kubectl apply -f deploy/crds/compute_v1_firewall_crd.yaml
kubectl apply -f deploy/crds/compute_v1_forwardingrule_crd.yaml
kubectl apply -f deploy/crds/compute_v1_image_crd.yaml
kubectl apply -f deploy/crds/compute_v1_instance_crd.yaml
kubectl apply -f deploy/crds/compute_v1_network_crd.yaml
kubectl apply -f deploy/crds/compute_v1_subnetwork_crd.yaml
kubectl apply -f deploy/crds/compute_v1_targetpool_crd.yaml

Create GCP Address

Edit deploy/examples/address.yaml replacing the project ID placeholders with your GCP project.

Once the GCP Operator is deployed you can create a GCP instance:

kubectl -n gcp-operator apply -f deploy/examples/address.yaml

After a few minutes check to see if the new instance exists:

gcloud compute addresses list
NAME                   REGION       ADDRESS          STATUS
example                us-central1  35.226.61.203    RESERVED

Create GCP Instance

Once the GCP Operator is deployed you can create a GCP instance:

Note: you'll need to edit this file first

kubectl -n gcp-operator apply -f deploy/examples/instance.yaml

After a few minutes check to see if the new instance exists:

gcloud compute instances list
NAME                                     ZONE           MACHINE_TYPE               PREEMPTIBLE  INTERNAL_IP  EXTERNAL_IP     STATUS
test                                     us-central1-a  custom (2 vCPU, 4.00 GiB)               10.128.0.2                   RUNNING

Cleanup:

kubectl delete -f deploy
kubectl delete -f deploy/crds
kubectl delete -f deploy/examples