Allow Networking

Duration: 2 min | Persona: Org Admin

In this section, you will enable and grant the appropriate APIs in the Tenant project and the IAM role for the Tenant project’s service account. This will allow later this service account to provision the networking services.

Initialize variables:

WORK_DIR=~/
source ${WORK_DIR}acm-workshop-variables.sh

Define role

Define the compute.networkAdmin role with an IAMPolicyMember for the Tenant project’s service account:

cat <<EOF > ${WORK_DIR}$HOST_PROJECT_DIR_NAME/projects/$TENANT_PROJECT_ID/network-admin.yaml
apiVersion: iam.cnrm.cloud.google.com/v1beta1
kind: IAMPolicyMember
metadata:
  name: network-admin-${TENANT_PROJECT_ID}
  namespace: config-control
  annotations:
    config.kubernetes.io/depends-on: iam.cnrm.cloud.google.com/namespaces/config-control/IAMServiceAccount/${TENANT_PROJECT_ID},resourcemanager.cnrm.cloud.google.com/namespaces/config-control/Project/${TENANT_PROJECT_ID}
spec:
  memberFrom:
    serviceAccountRef:
      name: ${TENANT_PROJECT_ID}
  role: roles/compute.networkAdmin
  resourceRef:
    kind: Project
    external: projects/${TENANT_PROJECT_ID}
EOF

Define API

Define the Compute Engine API Service resource for the Tenant project:

cat <<EOF > ${WORK_DIR}$HOST_PROJECT_DIR_NAME/projects/$TENANT_PROJECT_ID/compute-service.yaml
apiVersion: serviceusage.cnrm.cloud.google.com/v1beta1
kind: Service
metadata:
  annotations:
    cnrm.cloud.google.com/deletion-policy: "abandon"
    cnrm.cloud.google.com/disable-dependent-services: "false"
    config.kubernetes.io/depends-on: resourcemanager.cnrm.cloud.google.com/namespaces/config-control/Project/${TENANT_PROJECT_ID}
  name: ${TENANT_PROJECT_ID}-compute
  namespace: config-control
spec:
  projectRef:
    name: ${TENANT_PROJECT_ID}
  resourceID: compute.googleapis.com
EOF

Info

Throughout this workshop, we are enabling the Google Cloud services APIs from the Org Admin, it allows more control and governance over which Google Cloud services APIs the Platform Admin could use or not.

Deploy Kubernetes manifests

cd ${WORK_DIR}$HOST_PROJECT_DIR_NAME/
git add . && git commit -m "Allow Networking for Tenant project" && git push origin main

Check deployments

graph TD;
  IAMPolicyMember-.->Project
  IAMPolicyMember-.->Service

List the Kubernetes resources managed by Config Sync in Config Controller for the Host project configs repository:

Run this command and click on this link:

echo -e "https://console.cloud.google.com/kubernetes/config_management/packages?project=${HOST_PROJECT_ID}"

Wait until you see the Sync status column as Synced and the Reconcile status column as Current.

Run this command:

gcloud alpha anthos config sync repo describe \
    --project $HOST_PROJECT_ID \
    --managed-resources all \
    --sync-name root-sync \
    --sync-namespace config-management-system

Wait and re-run this command above until you see "status": "SYNCED". All the managed_resources listed should have STATUS: Current too.

List the GitHub runs for the Host project configs repository:

cd ${WORK_DIR}$HOST_PROJECT_DIR_NAME && gh run list

List the Google Cloud resources created:

gcloud services list \
    --enabled \
    --project ${TENANT_PROJECT_ID} \
    | grep compute
gcloud projects get-iam-policy $TENANT_PROJECT_ID \
    --filter="bindings.members:${TENANT_PROJECT_SA_EMAIL}" \
    --flatten="bindings[].members" \
    --format="table(bindings.role)" \
    | grep networkAdmin

Wait and re-run this command above until you see the resources created.