diff --git a/cluster/gce/config-test.sh b/cluster/gce/config-test.sh
index 4ac04647f86..6bcfb71db7f 100755
--- a/cluster/gce/config-test.sh
+++ b/cluster/gce/config-test.sh
@@ -86,11 +86,16 @@ KUBEPROXY_TEST_LOG_LEVEL="${KUBEPROXY_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
 TEST_CLUSTER_DELETE_COLLECTION_WORKERS="${TEST_CLUSTER_DELETE_COLLECTION_WORKERS:---delete-collection-workers=1}"
 TEST_CLUSTER_RESYNC_PERIOD="${TEST_CLUSTER_RESYNC_PERIOD:---min-resync-period=3m}"
 
-KUBELET_TEST_ARGS="--max-pods=110 --serialize-image-pulls=false --outofdisk-transition-frequency=0"
-APISERVER_TEST_ARGS="--runtime-config=extensions/v1beta1 ${TEST_CLUSTER_DELETE_COLLECTION_WORKERS}"
-CONTROLLER_MANAGER_TEST_ARGS="${TEST_CLUSTER_RESYNC_PERIOD}"
-SCHEDULER_TEST_ARGS=""
-KUBEPROXY_TEST_ARGS=""
+# ContentType used by all components to communicate with apiserver.
+TEST_CLUSTER_API_CONTENT_TYPE="${TEST_CLUSTER_CONTENT_TYPE:-}"
+# ContentType used to store objects in underlying database.
+TEST_CLUSTER_STORAGE_CONTENT_TYPE="${TEST_CLUSTER_CLIENT_CONTENT_TYPE:-}"
+
+KUBELET_TEST_ARGS="--max-pods=110 --serialize-image-pulls=false --outofdisk-transition-frequency=0 ${TEST_CLUSTER_API_CONTENT_TYPE}"
+APISERVER_TEST_ARGS="--runtime-config=extensions/v1beta1 ${TEST_CLUSTER_DELETE_COLLECTION_WORKERS} ${TEST_CLUSTER_STORAGE_CONTENT_TYPE}"
+CONTROLLER_MANAGER_TEST_ARGS="${TEST_CLUSTER_RESYNC_PERIOD} ${TEST_CLUSTER_API_CONTENT_TYPE}"
+SCHEDULER_TEST_ARGS="${TEST_CLUSTER_API_CONTENT_TYPE}"
+KUBEPROXY_TEST_ARGS="${TEST_CLUSTER_API_CONTENT_TYPE}"
 
 # Optional: Enable node logging.
 ENABLE_NODE_LOGGING="${KUBE_ENABLE_NODE_LOGGING:-true}"
diff --git a/cluster/kubemark/config-default.sh b/cluster/kubemark/config-default.sh
index aecc560ea35..68a6212dfc6 100644
--- a/cluster/kubemark/config-default.sh
+++ b/cluster/kubemark/config-default.sh
@@ -46,11 +46,16 @@ TERMINATED_POD_GC_THRESHOLD=${TERMINATED_POD_GC_THRESHOLD:-100}
 TEST_CLUSTER_LOG_LEVEL="${TEST_CLUSTER_LOG_LEVEL:---v=2}"
 TEST_CLUSTER_RESYNC_PERIOD="${TEST_CLUSTER_RESYNC_PERIOD:---min-resync-period=12h}"
 
-KUBELET_TEST_ARGS="--max-pods=100 $TEST_CLUSTER_LOG_LEVEL"
-APISERVER_TEST_ARGS="--runtime-config=extensions/v1beta1 ${TEST_CLUSTER_LOG_LEVEL}"
-CONTROLLER_MANAGER_TEST_ARGS="${TEST_CLUSTER_LOG_LEVEL} ${TEST_CLUSTER_RESYNC_PERIOD}"
-SCHEDULER_TEST_ARGS="${TEST_CLUSTER_LOG_LEVEL}"
-KUBEPROXY_TEST_ARGS="${TEST_CLUSTER_LOG_LEVEL}"
+# ContentType used by all components to communicate with apiserver.
+TEST_CLUSTER_API_CONTENT_TYPE="${TEST_CLUSTER_CONTENT_TYPE:-}"
+# ContentType used to store objects in underlying database.
+TEST_CLUSTER_STORAGE_CONTENT_TYPE="${TEST_CLUSTER_CLIENT_CONTENT_TYPE:-}"
+
+KUBELET_TEST_ARGS="--max-pods=100 $TEST_CLUSTER_LOG_LEVEL ${TEST_CLUSTER_API_CONTENT_TYPE}"
+APISERVER_TEST_ARGS="--runtime-config=extensions/v1beta1 ${TEST_CLUSTER_LOG_LEVEL} ${TEST_CLUSTER_STORAGE_CONTENT_TYPE}"
+CONTROLLER_MANAGER_TEST_ARGS="${TEST_CLUSTER_LOG_LEVEL} ${TEST_CLUSTER_RESYNC_PERIOD} ${TEST_CLUSTER_API_CONTENT_TYPE}"
+SCHEDULER_TEST_ARGS="${TEST_CLUSTER_LOG_LEVEL} ${TEST_CLUSTER_API_CONTENT_TYPE}"
+KUBEPROXY_TEST_ARGS="${TEST_CLUSTER_LOG_LEVEL} ${TEST_CLUSTER_API_CONTENT_TYPE}"
 
 # Extra docker options for nodes.
 EXTRA_DOCKER_OPTS="${EXTRA_DOCKER_OPTS:-}"