ci(tests): better handling of errors

.github/workflows/tests.yaml

@@ -168,14 +168,16 @@ jobs:
                while [[ $attempts -lt 3 && $success == false ]]
                do
                    response=$(kubectl run curl-pod --image=curlimages/curl --rm -ti --quiet --restart=Never -- curl -s -o /dev/null -w "%{http_code}\n" http://$ip:8080/metrics)
-                   if [[ $response -ge 200 && $response -lt 300 ]]; then
+                   if [[ -z "$response" ]]; then
+                        echo "No HTTP response received from $ip"
+                   elif [[ $response -ge 200 && $response -lt 300 ]]; then
                         echo "HTTP status code $response is valid for $ip"
                         success=true
                    else
                         echo "HTTP status code $response is not valid for $ip"
-                        ((attempts++))
-                        sleep 5
                    fi
+                   ((attempts++))
+                   sleep 3
                done
                if [[ $success == false ]]; then
                       echo "Failed after 3 attempts for $ip"