diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DefaultKubevirtApiConfigHandler.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DefaultKubevirtApiConfigHandler.java
new file mode 100644
index 0000000..699c41b
--- /dev/null
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/DefaultKubevirtApiConfigHandler.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2020-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.kubevirtnode.impl;
+
+import io.fabric8.kubernetes.api.model.Node;
+import io.fabric8.kubernetes.api.model.NodeAddress;
+import io.fabric8.kubernetes.client.KubernetesClient;
+import org.onlab.packet.IpAddress;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.LeadershipService;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.kubevirtnode.api.DefaultKubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfig;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigAdminService;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigEvent;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfigListener;
+import org.onosproject.kubevirtnode.api.KubevirtNode;
+import org.onosproject.kubevirtnode.api.KubevirtNodeAdminService;
+import org.onosproject.kubevirtnode.api.KubevirtNodeState;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Objects;
+import java.util.concurrent.ExecutorService;
+
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.kubevirtnode.api.KubevirtApiConfig.State.CONNECTED;
+import static org.onosproject.kubevirtnode.api.KubevirtApiConfigService.APP_ID;
+import static org.onosproject.kubevirtnode.api.KubevirtNode.Type.MASTER;
+import static org.onosproject.kubevirtnode.api.KubevirtNode.Type.WORKER;
+import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.k8sClient;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Handles the state of KubeVirt API server configuration.
+ */
+@Component(immediate = true)
+public class DefaultKubevirtApiConfigHandler {
+
+    private final Logger log = getLogger(getClass());
+
+    private static final String INTERNAL_IP = "InternalIP";
+    private static final String K8S_ROLE = "node-role.kubernetes.io";
+
+    private static final long SLEEP_MS = 10000; // we wait 10s
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected LeadershipService leadershipService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterService clusterService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected KubevirtApiConfigAdminService configAdminService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected KubevirtNodeAdminService nodeAdminService;
+
+    private final ExecutorService eventExecutor = newSingleThreadExecutor(
+            groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+    private final KubevirtApiConfigListener configListener = new InternalKubevirtApiConfigListener();
+
+    private ApplicationId appId;
+    private NodeId localNode;
+
+    @Activate
+    protected void activate() {
+        appId = coreService.getAppId(APP_ID);
+        localNode = clusterService.getLocalNode().id();
+        leadershipService.runForLeadership(appId.name());
+        configAdminService.addListener(configListener);
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        configAdminService.removeListener(configListener);
+        leadershipService.withdraw(appId.name());
+        eventExecutor.shutdown();
+
+        log.info("Stopped");
+    }
+
+    /**
+     * Checks the validity of the given kubernetes API server configuration.
+     *
+     * @param config kubernetes API server configuration
+     * @return validity result
+     */
+    private boolean checkApiServerConfig(KubevirtApiConfig config) {
+        KubernetesClient k8sClient = k8sClient(config);
+        return k8sClient != null && k8sClient.getApiVersion() != null;
+    }
+
+    private void bootstrapKubevirtNodes(KubevirtApiConfig config) {
+        KubernetesClient k8sClient = k8sClient(config);
+
+        if (k8sClient == null) {
+            log.warn("Failed to connect to kubernetes API server");
+            return;
+        }
+
+        for (Node node : k8sClient.nodes().list().getItems()) {
+            KubevirtNode kubevirtNode = buildKubevirtNode(node);
+            nodeAdminService.createNode(kubevirtNode);
+        }
+    }
+
+    private KubevirtNode buildKubevirtNode(Node node) {
+        String hostname = node.getMetadata().getName();
+        IpAddress managementIp = null;
+        IpAddress dataIp = null;
+
+        for (NodeAddress nodeAddress:node.getStatus().getAddresses()) {
+            if (nodeAddress.getType().equals(INTERNAL_IP)) {
+                managementIp = IpAddress.valueOf(nodeAddress.getAddress());
+                dataIp = IpAddress.valueOf(nodeAddress.getAddress());
+            }
+        }
+
+        String roleStr = node.getMetadata().getLabels().keySet().stream()
+                .filter(l -> l.contains(K8S_ROLE))
+                .findFirst().orElse(null);
+
+        KubevirtNode.Type nodeType = WORKER;
+        if (roleStr != null) {
+            String role = roleStr.split("/")[1];
+            if (MASTER.name().equalsIgnoreCase(role)) {
+                nodeType = MASTER;
+            } else {
+                nodeType = WORKER;
+            }
+        }
+
+        // TODO: need to config the physnet obtained from node's annotation
+        return DefaultKubevirtNode.builder()
+                .hostname(hostname)
+                .managementIp(managementIp)
+                .dataIp(dataIp)
+                .type(nodeType)
+                .state(KubevirtNodeState.ON_BOARDED)
+                .build();
+    }
+
+    private class InternalKubevirtApiConfigListener implements KubevirtApiConfigListener {
+
+        private boolean isRelevantHelper() {
+            return Objects.equals(localNode, leadershipService.getLeader(appId.name()));
+        }
+
+        @Override
+        public void event(KubevirtApiConfigEvent event) {
+            switch (event.type()) {
+                case KUBEVIRT_API_CONFIG_CREATED:
+                    eventExecutor.execute(() -> processConfigCreation(event.subject()));
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        private void processConfigCreation(KubevirtApiConfig config) {
+            if (!isRelevantHelper()) {
+                return;
+            }
+
+            if (checkApiServerConfig(config)) {
+                KubevirtApiConfig newConfig = config.updateState(CONNECTED);
+                configAdminService.updateApiConfig(newConfig);
+
+                bootstrapKubevirtNodes(config);
+            }
+        }
+    }
+}