fix: log bastion instructions for ssh (#7623)

Author: awesomenix

e2e/vmss.go

@@ -282,6 +282,16 @@ func CreateVMSS(ctx context.Context, s *Scenario, resourceGroupName string) (*Sc
 		cleanupVMSS(ctx, s, vm)
 	})
 
+	result := "SSH Instructions: (may take a few minutes for the VM to be ready for SSH)\n========================\n"
+	if config.Config.KeepVMSS {
+		s.T.Logf("VM will be preserved after the test finishes, PLEASE MANUALLY DELETE THE VMSS. Set KEEP_VMSS=false to delete it automatically after the test finishes\n")
+	} else {
+		s.T.Logf("VM will be automatically deleted after the test finishes, to preserve it for debugging purposes set KEEP_VMSS=true or pause the test with a breakpoint before the test finishes or failed\n")
+	}
+	// We combine the az aks get credentials in the same line so we don't overwrite the user's kubeconfig.
+	result += fmt.Sprintf(`az network bastion ssh --target-ip-address "%s" --name "%s-bastion" --resource-group %s --auth-type ssh-key --username azureuser --ssh-key %s`, vm.PrivateIP, *s.Runtime.Cluster.Model.Name, config.ResourceGroupName(s.Location), config.VMSSHPrivateKeyFileName) + "\n"
+	s.T.Log(result)
+
 	vmssResp, err := operation.PollUntilDone(ctx, config.DefaultPollUntilDoneOptions)
 	if err != nil {
 		return vm, err