Basic reconfiguring of the vm

main.go

@@ -3,18 +3,20 @@ package main
 import (
 	"context"
 	"github.com/vmware/govmomi"
-	"github.com/vmware/govmomi/object"
 	"github.com/vmware/govmomi/vim25/types"
 	"net/url"
 	"os"
 	"strconv"
 	"fmt"
+	"github.com/vmware/govmomi/find"
+	"github.com/vmware/govmomi/vim25/mo"
 )
 
 func main() {
 	var URL = os.Args[1]
 	var username = os.Args[2]
 	var password = os.Args[3]
+	var dc_name = os.Args[6]
 	var vm_name = os.Args[4]
 	var cpus, err = strconv.Atoi(os.Args[5])
 	if err != nil {
@@ -26,24 +28,50 @@ func main() {
 
 	// create a client
 	// (connected to the specified URL,
-	// logged in with the username-passrowd)
+	// logged in with the username-password)
 	u, err := url.Parse(URL) // create a URL object from string
 	if err != nil {
 		panic(err)
 	}
 	u.User = url.UserPassword(username, password) // set username and password for automatical authentification
 	fmt.Println(u.String())
-	client, err := govmomi.NewClient(ctx, u,false) // creating a client (logs in with given uname&pswd)
+	client, err := govmomi.NewClient(ctx, u,true) // creating a client (logs in with given uname&pswd)
 	if err != nil {
 		panic(err)
 	}
-	// create a reference to a VM with the specified name...
-	vm_mor := types.ManagedObjectReference{Type: "VirtualMachine", Value: vm_name}
-	// ... and the VM itself, using the set up client & reference
-	vm := object.NewVirtualMachine(client.Client, vm_mor)
 
+	// Create a finder to search for a vm with the specified name
+	finder := find.NewFinder(client.Client, false)
+	// Need to specify the datacenter
+	if dc_name == "" {
+		dc, err := finder.DefaultDatacenter(ctx)
+		if err != nil {
+			panic(fmt.Errorf("Error reading default datacenter: %s", err))
+		}
+		var dc_mo mo.Datacenter
+		err = dc.Properties(ctx, dc.Reference(), []string{"name"}, &dc_mo)
+		if err != nil {
+			panic(fmt.Errorf("Error reading datacenter name: %s", err))
+		}
+		dc_name = dc_mo.Name
+		finder.SetDatacenter(dc)
+	} else {
+		dc, err := finder.Datacenter(ctx, fmt.Sprintf("/%v", dc_name))
+		if err != nil {
+			panic(err)
+		}
+		finder.SetDatacenter(dc)
+	}
+	vm, err := finder.VirtualMachine(ctx, vm_name)
+	if err != nil {
+		panic(err)
+	}
+
+	// creating new configuration for vm
 	vmConfigSpec := types.VirtualMachineConfigSpec{}
 	vmConfigSpec.NumCPUs = int32(cpus)
+
+	// finally reconfiguring
 	task, err := vm.Reconfigure(ctx, vmConfigSpec)
 	if err != nil {
 		panic(err)