Deploy NetworkPolicies

Duration: 5 min | Persona: Apps Operator

In this section, you will see the Policy Controller violation regarding to the missing NetworkPolicies in the Online Boutique namespace. Then, you will fix this violation by deploying the associated resources.

Initialize variables:

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

See the Policy Controller violations

See the Policy Controller violations in the GKE cluster, by running this command and click on this link:

echo -e "https://console.cloud.google.com/kubernetes/policy_controller/dashboard?project=${TENANT_PROJECT_ID}"

You will see that the K8sRequireNamespaceNetworkPolicies Constraint has this violation: Namespace <onlineboutique> does not have a NetworkPolicy.

Let’s fix it!

Update `RepoSync` to deploy the Online Boutique’s Helm chart

Define the RepoSync to deploy the Online Boutique’s Helm chart with the NetworkPolicies:

cat <<EOF > ${WORK_DIR}$GKE_CONFIGS_DIR_NAME/repo-syncs/$ONLINEBOUTIQUE_NAMESPACE/repo-sync.yaml
apiVersion: configsync.gke.io/v1beta1
kind: RepoSync
metadata:
  name: repo-sync
  namespace: ${ONLINEBOUTIQUE_NAMESPACE}
spec:
  sourceFormat: unstructured
  sourceType: helm
  helm:
    repo: oci://${CHART_REGISTRY_REPOSITORY}
    chart: ${ONLINEBOUTIQUE_NAMESPACE}
    version: ${ONLINE_BOUTIQUE_VERSION:1}
    releaseName: ${ONLINEBOUTIQUE_NAMESPACE}
    auth: gcpserviceaccount
    gcpServiceAccountEmail: ${HELM_CHARTS_READER_GSA}@${TENANT_PROJECT_ID}.iam.gserviceaccount.com
    values:
      cartDatabase:
        inClusterRedis:
          publicRepository: false
      images:
        repository: ${PRIVATE_ONLINE_BOUTIQUE_REGISTRY}
        tag: ${ONLINE_BOUTIQUE_VERSION}
      nativeGrpcHealthCheck: true
      seccompProfile:
        enable: true
      loadGenerator:
        checkFrontendInitContainer: false
      frontend:
        externalService: false
        virtualService:
          create: true
          gateway:
            name: ${INGRESS_GATEWAY_NAME}
            namespace: ${INGRESS_GATEWAY_NAMESPACE}
            labelKey: asm
            labelValue: ingressgateway
          hosts:
          - ${ONLINE_BOUTIQUE_INGRESS_GATEWAY_HOST_NAME}
      serviceAccounts:
        create: true
      authorizationPolicies:
        create: true
      networkPolicies:
        create: true
EOF

Info

In order to deploy the fine granular NetworkPolicies, one per app, we just updated the list of values of the Online Boutique’s Helm chart previously configured, with networkPolicies.create: true.

Deploy Kubernetes manifests

cd ${WORK_DIR}$GKE_CONFIGS_DIR_NAME/
git add . && git commit -m "Online Boutique NetworkPolicies" && git push origin main

Check deployments

List the Kubernetes resources managed by Config Sync in GKE cluster for the Online Boutique apps repository:

Run this command and click on this link:

echo -e "https://console.cloud.google.com/kubernetes/config_management/packages?project=${TENANT_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 $TENANT_PROJECT_ID \
    --managed-resources all \
    --sync-name repo-sync \
    --sync-namespace $ONLINEBOUTIQUE_NAMESPACE

Wait and re-run this command above until you see "status": "SYNCED".

List the GitHub runs for the GKE cluster configs repository:

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

See the Policy Controller Constraints without any violations in the GKE cluster, by running this command and click on this link:

echo -e "https://console.cloud.google.com/kubernetes/policy_controller/dashboard?project=${TENANT_PROJECT_ID}"

Check the Online Boutique website

Navigate to the Online Boutique website, click on the link displayed by the command below:

echo -e "https://${ONLINE_BOUTIQUE_INGRESS_GATEWAY_HOST_NAME}"

You should still have the Online Boutique website working successfully.