fix deploy karmada-apiserver error by loadBalancer

Signed-off-by: Poor12 <shentiecheng@huawei.com>

hack/deploy-karmada.sh

@@ -200,7 +200,7 @@ if [ "${HOST_CLUSTER_TYPE}" = "remote" ]; then
       KARMADA_APISERVER_IP=$(kubectl --context="${HOST_CLUSTER_NAME}" get pod -l app=karmada-apiserver -n "${KARMADA_SYSTEM_NAMESPACE}" -o=jsonpath='{.items[0].status.podIP}')
     ;;
     LoadBalancer)
-      if util::wait_service_external_ip "karmada-apiserver" "karmada-apiserver" "${KARMADA_SYSTEM_NAMESPACE}"; then
+      if util::wait_service_external_ip "${HOST_CLUSTER_NAME}" "karmada-apiserver" "${KARMADA_SYSTEM_NAMESPACE}"; then
         echo "Get service external IP: ${SERVICE_EXTERNAL_IP}, wait to check network connectivity"
         KARMADA_APISERVER_IP=$(util::get_load_balancer_ip) || KARMADA_APISERVER_IP=''
       else

hack/util.sh

@@ -521,13 +521,15 @@ function util::wait_service_external_ip() {
   local tmp
   for tmp in {1..30}; do
     set +e
+    ## if .status.loadBalancer does not have `ingress` field, return "".
+    ## if .status.loadBalancer has `ingress` field but one of `ingress` field does not have `hostname` or `ip` field, return "<no value>".
     external_host=$(kubectl --context="$context_name" get service "${service_name}" -n "${namespace}" --template="{{range .status.loadBalancer.ingress}}{{.hostname}} {{end}}" | xargs)
     external_ip=$(kubectl --context="$context_name" get service "${service_name}" -n "${namespace}" --template="{{range .status.loadBalancer.ingress}}{{.ip}} {{end}}" | xargs)
     set -e
-    if [[ ! -z "$external_host" ]]; then # Compatibility with hostname, such as AWS
+    if [[ ! -z "$external_host" && "$external_host" != "<no value>" ]]; then # Compatibility with hostname, such as AWS
       external_ip=$external_host
     fi
-    if [[ -z "$external_ip" ]]; then
+    if [[ -z "$external_ip" || "$external_ip" = "<no value>" ]]; then
       echo "wait the external ip of ${service_name} ready..."
       sleep 6
       continue