persist template

pkg/operations/kubernetesupgrade/upgradecluster.go

@@ -5,15 +5,19 @@ package kubernetesupgrade
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"math/rand"
+	"path"
 	"strings"
 	"time"
 
 	"github.com/Azure/aks-engine/pkg/api"
 	"github.com/Azure/aks-engine/pkg/api/common"
 	"github.com/Azure/aks-engine/pkg/armhelpers"
 	"github.com/Azure/aks-engine/pkg/armhelpers/utils"
+	"github.com/Azure/aks-engine/pkg/engine"
+	"github.com/Azure/aks-engine/pkg/engine/transform"
 	"github.com/Azure/aks-engine/pkg/i18n"
 	"github.com/Azure/aks-engine/pkg/kubernetes"
 	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-12-01/compute"
@@ -457,3 +461,29 @@ func (uc *UpgradeCluster) addVMToFinishedSets(vm compute.VirtualMachine, current
 		}
 	}
 }
+
+// WriteTemplate writes upgrade template to a folder
+func WriteTemplate(
+	translator *i18n.Translator,
+	upgradeContainerService *api.ContainerService,
+	templateMap map[string]interface{}, parametersMap map[string]interface{},
+	filename string) {
+	updatedTemplateJSON, _ := json.Marshal(templateMap)
+	parametersJSON, _ := json.Marshal(parametersMap)
+
+	templateapp, err := transform.PrettyPrintArmTemplate(string(updatedTemplateJSON))
+	if err != nil {
+		logrus.Fatalf("error pretty printing template: %s \n", err.Error())
+	}
+	parametersapp, e := transform.PrettyPrintJSON(string(parametersJSON))
+	if e != nil {
+		logrus.Fatalf("error pretty printing template parameters: %s \n", e.Error())
+	}
+	outputDirectory := path.Join("_output", upgradeContainerService.Properties.MasterProfile.DNSPrefix, filename)
+	writer := &engine.ArtifactWriter{
+		Translator: translator,
+	}
+	if err := writer.WriteTLSArtifacts(upgradeContainerService, "vlabs", templateapp, parametersapp, outputDirectory, false, false); err != nil {
+		logrus.Fatalf("error writing artifacts: %s\n", err.Error())
+	}
+}

pkg/operations/kubernetesupgrade/upgrademasternode.go

@@ -59,6 +59,8 @@ func (kmn *UpgradeMasterNode) CreateNode(ctx context.Context, poolName string, m
 	deploymentSuffix := random.Int31()
 	deploymentName := fmt.Sprintf("master-%s-%d", time.Now().Format("06-01-02T15.04.05"), deploymentSuffix)
 
+	WriteTemplate(kmn.Translator, kmn.UpgradeContainerService, kmn.TemplateMap, kmn.ParametersMap, deploymentName)
+
 	_, err := kmn.Client.DeployTemplate(
 		ctx,
 		kmn.ResourceGroup,