feat(k8s/deploy): change default namespace behavior

api/exec/kubernetes_deploy.go

@@ -95,7 +95,9 @@ func (deployer *KubernetesDeployer) Deploy(request *http.Request, endpoint *port
 		args = append(args, "--server", endpoint.URL)
 		args = append(args, "--insecure-skip-tls-verify")
 		args = append(args, "--token", token)
-		args = append(args, "--namespace", namespace)
+		if namespace != "" {
+			args = append(args, "--namespace", namespace)
+		}
 		args = append(args, "apply", "-f", "-")
 
 		var stderr bytes.Buffer

api/http/handler/stacks/create_kubernetes_stack.go

@@ -189,6 +189,10 @@ func (handler *Handler) deployKubernetesStack(r *http.Request, endpoint *portain
 		return "", errors.Wrap(err, "failed to add application labels")
 	}
 
+	if !composeFormat && namespace == "default" {
+		namespace = ""
+	}
+
 	return handler.KubernetesDeployer.Deploy(r, endpoint, string(manifest), namespace)
 }
 

app/kubernetes/views/deploy/deploy.html

@@ -83,7 +83,7 @@
                   placeholder="# Define or paste the content of your manifest file here"
                 >
                   <editor-description>
-                    <span class="col-sm-12 text-muted small" ng-show="ctrl.state.DeployType === ctrl.ManifestDeployTypes.COMPOSE">
+                    <span class="col-sm-12" ng-show="ctrl.state.DeployType === ctrl.ManifestDeployTypes.COMPOSE">
                       <p>
                         <i class="fa fa-exclamation-circle orange-icon" aria-hidden="true" style="margin-right: 2px;"></i>
                         Portainer uses <a href="https://kompose.io/" target="_blank">Kompose</a> to convert your Compose manifest to a Kubernetes compliant manifest. Be wary that
@@ -95,7 +95,7 @@
                       </p>
                     </span>
                     <span
-                      class="col-sm-12 text-muted small"
+                      class="col-sm-12"
                       ng-show="ctrl.state.DeployType === ctrl.ManifestDeployTypes.KUBERNETES && ctrl.state.BuildMethod === ctrl.BuildMethods.WEB_EDITOR"
                     >
                       <p>