Feature: Add Istio Ambient Mode Support via Overlay Method #151
Workflow file for this run
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| name: Test Istio Installation Modes (CNI, Insecure, Ambient) | |
| on: | |
| pull_request: | |
| paths: | |
| - tests/install_KinD_create_KinD_cluster_install_kustomize.sh | |
| - tests/istio* | |
| - tests/ambient* | |
| - .github/workflows/istio_validation.yaml | |
| - common/istio/** | |
| - common/cert-manager/** | |
| permissions: | |
| contents: read | |
| actions: read | |
| env: | |
| KF_PROFILE: kubeflow-user-example-com | |
| jobs: | |
| test-istio: | |
| runs-on: ubuntu-latest | |
| strategy: | |
| matrix: | |
| istio-mode: ['cni', 'insecure', 'ambient'] | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| - name: Install KinD, Create KinD cluster and Install kustomize | |
| run: ./tests/install_KinD_create_KinD_cluster_install_kustomize.sh | |
| - name: Install kubectl | |
| run: ./tests/kubectl_install.sh | |
| - name: Create Kubeflow Namespace | |
| run: kustomize build common/kubeflow-namespace/base | kubectl apply -f - | |
| - name: Install Certificate Manager | |
| run: ./tests/cert_manager_install.sh | |
| - name: Install Istio CNI | |
| if: matrix.istio-mode == 'cni' | |
| run: ./tests/istio-cni_install.sh | |
| - name: Install Istio Insecure (Non-CNI) | |
| if: matrix.istio-mode == 'insecure' | |
| run: | | |
| kustomize build common/istio/istio-crds/base | kubectl apply -f - | |
| kustomize build common/istio/istio-namespace/base | kubectl apply -f - | |
| kustomize build common/istio/istio-install/overlays/insecure | kubectl apply -f - | |
| kubectl wait --for=condition=Ready pods --all -n istio-system --timeout 300s | |
| # Patch webhook certificates for insecure mode | |
| CA_BUNDLE=$(kubectl get secret istio-ca-secret -n istio-system -o jsonpath='{.data.root-cert\.pem}') | |
| kubectl patch mutatingwebhookconfiguration istio-sidecar-injector --type='json' \ | |
| -p="[{'op': 'add', 'path': '/webhooks/0/clientConfig/caBundle', 'value':'$CA_BUNDLE'}, \ | |
| {'op': 'add', 'path': '/webhooks/1/clientConfig/caBundle', 'value':'$CA_BUNDLE'}, \ | |
| {'op': 'add', 'path': '/webhooks/2/clientConfig/caBundle', 'value':'$CA_BUNDLE'}, \ | |
| {'op': 'add', 'path': '/webhooks/3/clientConfig/caBundle', 'value':'$CA_BUNDLE'}]" | |
| kubectl patch validatingwebhookconfiguration istio-validator-istio-system --type='json' \ | |
| -p="[{'op': 'add', 'path': '/webhooks/0/clientConfig/caBundle', 'value':'$CA_BUNDLE'}]" | |
| - name: Install Istio Ambient Mode | |
| if: matrix.istio-mode == 'ambient' | |
| run: | | |
| kustomize build common/istio/istio-crds/base | kubectl apply -f - | |
| kustomize build common/istio/istio-namespace/base | kubectl apply -f - | |
| kustomize build common/istio/istio-install/overlays/ambient | kubectl apply -f - | |
| kubectl wait --for=condition=Ready pods --all -n istio-system --timeout 300s | |
| - name: Wait for Istio deployment | |
| run: | | |
| kubectl wait --for=condition=available --timeout=300s deployment/istiod -n istio-system | |
| kubectl get pods -n istio-system | |
| - name: Verify CNI Installation | |
| if: matrix.istio-mode == 'cni' | |
| run: | | |
| kubectl get daemonset istio-cni-node -n kube-system | |
| kubectl rollout status daemonset/istio-cni-node -n kube-system --timeout=120s | |
| kubectl logs -n istio-system deployment/istiod | grep "cniNamespace.*istio-system" | |
| - name: Verify Insecure Installation | |
| if: matrix.istio-mode == 'insecure' | |
| run: | | |
| # Verify CNI daemonset is deleted | |
| ! kubectl get daemonset istio-cni-node -n kube-system 2>/dev/null || \ | |
| (echo "ERROR: CNI daemonset should not exist in insecure mode" && exit 1) | |
| # Verify istiod has ISTIO_CNI_ENABLED=false | |
| ISTIO_CNI_ENABLED=$(kubectl get deployment istiod -n istio-system -o jsonpath='{.spec.template.spec.containers[0].env[?(@.name=="ISTIO_CNI_ENABLED")].value}') | |
| if [ "$ISTIO_CNI_ENABLED" != "false" ]; then | |
| echo "ERROR: ISTIO_CNI_ENABLED should be false, got: $ISTIO_CNI_ENABLED" | |
| exit 1 | |
| fi | |
| # Verify configmap has pilot.cni.enabled=false | |
| kubectl get configmap istio-sidecar-injector -n istio-system -o jsonpath='{.data.values}' | grep -q 'enabled: false' || \ | |
| (echo "ERROR: pilot.cni.enabled should be false in configmap values" && \ | |
| kubectl get configmap istio-sidecar-injector -n istio-system -o jsonpath='{.data.values}' && exit 1) | |
| - name: Verify Ambient Mode Installation | |
| if: matrix.istio-mode == 'ambient' | |
| run: | | |
| kubectl get daemonset ztunnel -n istio-system | |
| kubectl rollout status daemonset/ztunnel -n istio-system --timeout=120s | |
| PILOT_ENABLE_AMBIENT=$(kubectl get deployment istiod -n istio-system -o jsonpath='{.spec.template.spec.containers[0].env[?(@.name=="PILOT_ENABLE_AMBIENT")].value}') | |
| if [ "$PILOT_ENABLE_AMBIENT" != "true" ]; then | |
| echo "ERROR: PILOT_ENABLE_AMBIENT should be true, got: $PILOT_ENABLE_AMBIENT" | |
| exit 1 | |
| fi | |
| echo "Ambient mode enabled in istiod" | |
| kubectl get daemonset istio-cni-node -n kube-system | |
| kubectl rollout status daemonset/istio-cni-node -n kube-system --timeout=120s | |
| echo "CNI installed for ambient mode" | |
| PSS_LEVEL=$(kubectl get namespace istio-system -o jsonpath='{.metadata.labels.pod-security\.kubernetes\.io/enforce}') | |
| if [ "$PSS_LEVEL" != "privileged" ]; then | |
| echo "ERROR: istio-system should have PSS privileged, got: $PSS_LEVEL" | |
| exit 1 | |
| fi | |
| echo "PSS privileged verified for istio-system" | |
| - name: Install OAuth2 Proxy | |
| run: ./tests/oauth2-proxy_install.sh | |
| - name: Install Kubeflow Istio Resources | |
| run: kustomize build common/istio/kubeflow-istio-resources/base | kubectl apply -f - | |
| - name: Install Multi-Tenancy | |
| run: ./tests/multi_tenancy_install.sh | |
| - name: Create KF Profile | |
| run: ./tests/kubeflow_profile_install.sh | |
| - name: Enable ambient mode for user namespace | |
| if: matrix.istio-mode == 'ambient' | |
| run: | | |
| kubectl label namespace $KF_PROFILE istio-injection- --overwrite | |
| kubectl label namespace $KF_PROFILE istio.io/dataplane-mode=ambient --overwrite | |
| - name: Enable Istio injection and adjust PSS for insecure mode | |
| run: | | |
| if [ "${{ matrix.istio-mode }}" = "insecure" ]; then | |
| kubectl label namespace $KF_PROFILE pod-security.kubernetes.io/enforce=privileged --overwrite | |
| echo "Applied privileged PSS for insecure mode" | |
| fi | |
| - name: Create AuthorizationPolicy for test namespace (insecure mode only) | |
| if: matrix.istio-mode == 'insecure' | |
| run: | | |
| # Create AuthorizationPolicy to allow traffic within the test namespace | |
| # This is needed because Istio has a global deny-all policy | |
| # The profile controller doesn't create this automatically | |
| cat <<EOF | kubectl apply -f - | |
| apiVersion: security.istio.io/v1beta1 | |
| kind: AuthorizationPolicy | |
| metadata: | |
| name: allow-test-namespace-traffic | |
| namespace: $KF_PROFILE | |
| spec: | |
| action: ALLOW | |
| rules: | |
| - from: | |
| - source: | |
| namespaces: ["$KF_PROFILE"] | |
| EOF | |
| - name: Test sidecar injection | |
| if: matrix.istio-mode != 'ambient' | |
| run: | | |
| kubectl apply -f ./tests/istio_dummy_deployment.yaml -n $KF_PROFILE | |
| kubectl wait --for=condition=available --timeout=160s deployment/test-application -n $KF_PROFILE | |
| POD_NAME=$(kubectl get pods -n $KF_PROFILE -l app=test-application -o jsonpath='{.items[0].metadata.name}') | |
| ISTIO_PROXY_EXISTS=$(kubectl get pod $POD_NAME -n $KF_PROFILE -o jsonpath='{.spec.containers[*].name}' | grep -c "istio-proxy" || echo "0") | |
| ISTIO_INIT_EXISTS=$(kubectl get pod $POD_NAME -n $KF_PROFILE -o jsonpath='{.spec.initContainers[*].name}' | grep -c "istio-proxy" || echo "0") | |
| if [ "$ISTIO_PROXY_EXISTS" -eq "0" ] && [ "$ISTIO_INIT_EXISTS" -eq "0" ]; then | |
| echo "ERROR: Sidecar injection failed - istio-proxy container not found" | |
| kubectl describe pod $POD_NAME -n $KF_PROFILE | |
| kubectl get namespace $KF_PROFILE --show-labels | |
| exit 1 | |
| fi | |
| # Verify Envoy proxy is responding | |
| kubectl exec -n $KF_PROFILE deployment/test-application -c istio-proxy -- curl -s localhost:15000/ready | grep -q "LIVE" || \ | |
| (echo "ERROR: Envoy proxy not responding" && exit 1) | |
| - name: Test ambient mode (no sidecar) | |
| if: matrix.istio-mode == 'ambient' | |
| run: | | |
| kubectl apply -f ./tests/istio_dummy_deployment.yaml -n $KF_PROFILE | |
| kubectl wait --for=condition=available --timeout=160s deployment/test-application -n $KF_PROFILE | |
| POD_NAME=$(kubectl get pods -n $KF_PROFILE -l app=test-application -o jsonpath='{.items[0].metadata.name}') | |
| CONTAINER_COUNT=$(kubectl get pod $POD_NAME -n $KF_PROFILE -o jsonpath='{.spec.containers[*].name}' | wc -w) | |
| if [ "$CONTAINER_COUNT" -ne "1" ]; then | |
| echo "ERROR: Pod should have only 1 container in ambient mode, found: $CONTAINER_COUNT" | |
| kubectl get pod $POD_NAME -n $KF_PROFILE -o jsonpath='{.spec.containers[*].name}' | |
| exit 1 | |
| fi | |
| AMBIENT_LABEL=$(kubectl get namespace $KF_PROFILE -o jsonpath='{.metadata.labels.istio\.io/dataplane-mode}') | |
| if [ "$AMBIENT_LABEL" != "ambient" ]; then | |
| echo "ERROR: Namespace should have istio.io/dataplane-mode=ambient label" | |
| exit 1 | |
| fi | |
| - name: Verify ztunnel logs show traffic handling | |
| if: matrix.istio-mode == 'ambient' | |
| run: | | |
| # Check ztunnel logs for workload processing | |
| kubectl logs -n istio-system daemonset/ztunnel --tail=50 | grep -i "workload\|connection\|proxy" || echo "Ztunnel logs (last 50 lines):" | |
| kubectl logs -n istio-system daemonset/ztunnel --tail=50 | |
| - name: Test CNI-specific functionality | |
| if: matrix.istio-mode == 'cni' | |
| run: | | |
| INIT_CONTAINERS=$(kubectl get pods -n $KF_PROFILE -l app=test-application -o jsonpath='{.items[0].spec.initContainers[*].name}') | |
| [[ "$INIT_CONTAINERS" == *"istio-validation"* ]] | |
| - name: Test Non-CNI functionality | |
| if: matrix.istio-mode == 'insecure' | |
| run: | | |
| # Verify istio-init container is present (not istio-validation) | |
| INIT_CONTAINERS=$(kubectl get pods -n $KF_PROFILE -l app=test-application -o jsonpath='{.items[0].spec.initContainers[*].name}') | |
| if [[ "$INIT_CONTAINERS" != *"istio-init"* ]]; then | |
| echo "ERROR: istio-init container not found. Found: $INIT_CONTAINERS" | |
| exit 1 | |
| fi | |
| # Verify istio-validation container is NOT present | |
| if [[ "$INIT_CONTAINERS" == *"istio-validation"* ]]; then | |
| echo "ERROR: istio-validation container should not be present in non-CNI mode" | |
| exit 1 | |
| fi | |
| - name: Port-forward the istio-ingress gateway | |
| run: ./tests/port_forward_gateway.sh | |
| - name: Test basic connectivity | |
| run: | | |
| kubectl expose deployment test-application --port=80 --target-port=8080 -n $KF_PROFILE | |
| kubectl run test-client --image=busybox --rm -i --restart=Never -n $KF_PROFILE -- \ | |
| wget -qO- --timeout=10 test-application.$KF_PROFILE.svc.cluster.local | |
| - name: Apply Pod Security Standards Restricted levels | |
| if: matrix.istio-mode == 'cni' | |
| run: ./tests/PSS_enable.sh | |
| - name: Apply Pod Security Standards Restricted to user namespace (ambient mode) | |
| if: matrix.istio-mode == 'ambient' | |
| run: | | |
| # Apply PSS restricted to user namespace (ztunnel runs in istio-system, not user namespaces) | |
| kubectl label namespace $KF_PROFILE pod-security.kubernetes.io/enforce=restricted --overwrite | |
| kubectl label namespace $KF_PROFILE pod-security.kubernetes.io/enforce-version=latest --overwrite | |
| - name: Collect debug information on failure | |
| if: failure() | |
| run: | | |
| echo "=== Istio System Pods ===" | |
| kubectl get pods -n istio-system -o wide | |
| echo "=== Istiod Logs (last 50 lines) ===" | |
| kubectl logs -n istio-system deployment/istiod --tail=50 || true | |
| echo "=== Istiod Environment Variables ===" | |
| kubectl get deployment istiod -n istio-system -o jsonpath='{.spec.template.spec.containers[0].env}' | jq . || true | |
| echo "=== Istio ConfigMap Values ===" | |
| kubectl get configmap istio-sidecar-injector -n istio-system -o jsonpath='{.data.values}' | jq . || true | |
| echo "=== CNI Daemonset Status ===" | |
| kubectl get daemonset istio-cni-node -n kube-system || echo "CNI daemonset not found (expected for insecure mode)" | |
| kubectl logs -n kube-system daemonset/istio-cni-node --tail=20 || true | |
| echo "=== Ztunnel Daemonset Status ===" | |
| kubectl get daemonset ztunnel -n istio-system || echo "Ztunnel daemonset not found (expected for non-ambient modes)" | |
| kubectl logs -n istio-system daemonset/ztunnel --tail=20 || true | |
| echo "=== Webhook Configurations ===" | |
| kubectl get mutatingwebhookconfiguration istio-sidecar-injector -o yaml | grep -A5 -B5 caBundle || true | |
| echo "=== Test Application Pods ===" | |
| kubectl get pods -n $KF_PROFILE -o wide || true | |
| kubectl describe pod -n $KF_PROFILE -l app=test-application || true | |
| echo "=== ReplicaSet Events ===" | |
| kubectl get replicaset -n $KF_PROFILE || true | |
| kubectl describe replicaset -n $KF_PROFILE || true |