Veritas InfoScale™ 8.0.1 Solutions in Cloud Environments

Last Published:
Product(s): InfoScale & Storage Foundation (8.0.1)
Platform: Windows
  1. Overview and preparation
    1.  
      Overview of InfoScale solutions in cloud environments
    2.  
      InfoScale agents for monitoring resources in cloud environments
    3.  
      Preparing for InfoScale installations in cloud environments
    4.  
      Installing the AWS CLI package
    5.  
      VPC security groups example
  2. Configurations for Amazon Web Services - Windows
    1. Replication configurations in AWS - Windows
      1.  
        Replication from on-premises to AWS - Windows
      2.  
        Replication across AZs in an AWS region - Windows
      3.  
        Replication across AWS regions - Windows
    2. HA and DR configurations in AWS - Windows
      1.  
        Failover within a subnet of an AWS AZ using virtual private IP - Windows
      2.  
        Failover across AWS subnets using overlay IP - Windows
      3.  
        Public access to InfoScale cluster nodes in AWS using Elastic IP - Windows
      4.  
        DR from on-premises to AWS and across AWS regions or VPCs - Windows
      5.  
        DR from on-premises to AWS - Windows
  3. Configurations for Microsoft Azure - Windows
    1. Replication configurations in Azure - Windows
      1.  
        Replication from on-premises to Azure - Windows
      2.  
        Replication within an Azure region - Windows
      3.  
        Replication across Azure regions - Windows
    2. HA and DR configurations in Azure - Windows
      1.  
        Failover within an Azure subnet using private IP - Windows
      2.  
        Failover across Azure subnets using overlay IP - Windows
      3.  
        Public access to cluster nodes in Azure using public IP - Windows
      4.  
        DR from on-premises to Azure and across Azure regions or VNets - Windows
  4. Replication to and across cloud environments
    1.  
      Data replication in supported cloud environments
    2.  
      Supported replication scenarios
    3.  
      Setting up replication across AWS and Azure environments

Failover across Azure subnets using overlay IP - Windows

InfoScale clusters let you fail over IPs - and thereby, the application configured for HA - between different subnets in the same VNet.

The following information is required:

  • The IP address outside VNet to be used for failover

  • The device to which the IP should be plumbed

Azure does not allow the private IP of one subnet to be failed over to a different subnet. To overcome this limitation, provide an overlay IP, which is outside the VNet level, so that it can be used across subnets.

Sample configuration with Overlay IP for failover across subnets in the same VNet

The following graphic depicts a sample failover configuration across subnets within the same VNet using an overlay IP:

The sample configuration includes the following elements:

  • A Azure virtual network (VNet) is configured in Region A of the Azure cloud

  • An application is configured for HA using a cluster that comprises two nodes, Node1 and Node2, which are Azure virtual machines

  • Node 1 exists in Subnet 1 and Node 2 exists in Subnet 2.

  • An overlay IP is configured to allow redirecting IP address traffic to another cluster node belonging to different subnet within the same VNet as a part of the failover or the failback operations

Sample service group configuration with overlay IP for failover across subnets in the same VNet

The following snippet is a service group configuration from a sample VCS configuration file (main.cf):

group AzureAuthGrp (
                SystemList = { AzureVM1 = 0, AzureVM2 = 1 }
                Parallel = 1
                )

                AzureAuth azureAuth (
                      SubscriptionId = 640a326-fga6-90gh-b616-c1e9bb
                      ClientId = e8d899-d32a-47d04-8986-be739104d
                      SecretKey = fntPgnUnhTprQrqpiNtrItpRhnGrrNklFngLs
                      TenantId = 9fjkabae-2348-4308-b503-6667d61
                                )

                Phantom phres (
                                )
                                
group AzureOverlayIPGrp (
                SystemList = { AzureVM1 = 0, AzureVM2 = 1 }
                )
                
                IP IP_res (
                                Address = "192.168.3.88"
                                SubNetMask = "255.255.255.0"
                                MACAddress @AzureVM1 = 00-0D-3A-91-73-A0
                                MACAddress @AzureVM2 = 00-0D-3A-92-03-DC
                                )
                
                NIC NIC_res (
                                MACAddress @AzureVM1 = 00-0D-3A-91-73-A0
                                MACAddress @AzureVM2 = 00-0D-3A-92-03-DC
                                )
                                
                AzureIP AzureOverlayIPres (
                         MACAddress @AzureVM1 = 00-0D-3A-91-73-A0
                         MACAddress @AzureVM2 = 00-0D-3A-92-03-DC
                         OverlayIP = "192.168.3.88"
                         RouteTableResourceIds = {
                             "/subscriptions/640a326-fga6-90gh-b616-c1e9bb/
																															resourceGroups/TestRG/providers/Microsoft.Network/
																															routeTables/testRoute_eastUS2",
                             "/subscriptions/640a326-fga6-90gh-b616-c1e9bb/
																														resourceGroups/TestRG2/providers/Microsoft.Network/
																									 				routeTables/route1" }
                              AzureAuthResName = azureAuth
                                )
                                
                IP_res requires AzureOverlayIPres
                AzureOverlayIPres requires NIC_res