Fix kubernetes.client.opeanapi.ApiException (#6412)

CHANGES.md

@@ -23,6 +23,7 @@ Release Notes.
 * Update the Apdex metric combine calculator.
 * Enhance `MeterSystem` to allow creating metrics with same `metricName` / `function` / `scope`.
 * Storage plugin supports postgresql.
+* Fix kubernetes.client.opeanapi.ApiException.
 
 #### UI
 * Update selector scroller to show in all pages.

oap-server/server-cluster-plugin/cluster-kubernetes-plugin/src/main/java/org/apache/skywalking/oap/server/cluster/plugin/kubernetes/NamespacedPodListInformer.java

@@ -22,6 +22,7 @@ import io.kubernetes.client.informer.SharedIndexInformer;
 import io.kubernetes.client.informer.SharedInformerFactory;
 import io.kubernetes.client.informer.cache.Lister;
 import io.kubernetes.client.openapi.ApiClient;
+import io.kubernetes.client.openapi.Configuration;
 import io.kubernetes.client.openapi.apis.CoreV1Api;
 import io.kubernetes.client.openapi.models.V1Pod;
 import io.kubernetes.client.openapi.models.V1PodList;
@@ -77,6 +78,7 @@ public enum NamespacedPodListInformer {
 
         ApiClient apiClient = Config.defaultClient();
         apiClient.setHttpClient(apiClient.getHttpClient().newBuilder().readTimeout(0, TimeUnit.SECONDS).build());
+        Configuration.setDefaultApiClient(apiClient);
         CoreV1Api coreV1Api = new CoreV1Api(apiClient);
         factory = new SharedInformerFactory(executorService);
 

oap-server/server-configuration/configuration-k8s-configmap/src/main/java/org/apache/skywalking/oap/server/configuration/configmap/ConfigurationConfigmapInformer.java

@@ -22,6 +22,7 @@ import io.kubernetes.client.informer.SharedIndexInformer;
 import io.kubernetes.client.informer.SharedInformerFactory;
 import io.kubernetes.client.informer.cache.Lister;
 import io.kubernetes.client.openapi.ApiClient;
+import io.kubernetes.client.openapi.Configuration;
 import io.kubernetes.client.openapi.apis.CoreV1Api;
 import io.kubernetes.client.openapi.models.V1ConfigMap;
 import io.kubernetes.client.openapi.models.V1ConfigMapList;
@@ -67,6 +68,7 @@ public class ConfigurationConfigmapInformer {
     private void doStartConfigMapInformer(final ConfigmapConfigurationSettings settings) throws IOException {
         ApiClient apiClient = Config.defaultClient();
         apiClient.setHttpClient(apiClient.getHttpClient().newBuilder().readTimeout(0, TimeUnit.SECONDS).build());
+        Configuration.setDefaultApiClient(apiClient);
         CoreV1Api coreV1Api = new CoreV1Api(apiClient);
         factory = new SharedInformerFactory(executorService);