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5. Configure Logical Networks

Now that you have a data center with hosts grouped in a cluster, you need to define and apply the networking layer. By default, the Management network is already defined for the new data center you created. You can define new logical networks, for example data, storage or display networks.
You have already defined a storage network for the Default data center in Lab 1 - Install and Configure Basic Setup, and added it to the hosts in the Default cluster. Now, you will repeat the same procedure for the FinanceCluster in the FinanceDataCenter.
To define logical networks in a cluster
  1. Navigate to the Tree pane and click the Expand All button. Click FinanceDataCenter. On the results list, the FinanceDataCenter data center displays. Click on it to display the details pane.
  2. On the details pane, select the Logical Networks tab and click New. The New Logical Network dialog displays.
    New Logical Network
    Figure 64. New Logical Network

    Fill in the Name and Description fields, and tick the Assign Networks to Cluster(s) - FinanceCluster checkbox to automatically add the Storage network to the FinanceCluster.
  3. Click OK to create the new logical network.
Now that you have defined this network as a resource required by the FinanceCluster in the data center, it is time to add this resource to the hosts in the cluster.
To add network to hosts
  1. Back on the Tree pane, click FinanceDataCenterClustersFinanceClusterHosts. The Hosts tab displays a list of available hosts.
  2. For each of your installed hosts, perform the following tasks:
    1. Click on the host. On the details pane, select the Network Interfaces tab.
    2. A list of network interfaces available for this host displays. One of them will already have the management network (rhevm) configured.
      Available network interfaces
      Figure 65. Available network interfaces

    3. Select the interface on which to configure the Storage network and click the Edit/ Add button. The Edit Network Interface dialog displays.
      Edit network interface
      Figure 66. Edit network interface

      Configure the following options:
      • Under Network, select storage.
      • Select the Static radio button. Enter the IP and Subnet Mask you have prepared as part of the prerequisites to this lab.
      • Tick the Save network configuration checkbox.
    4. Click OK.
You have now added a new storage network to your data center, and attached the network to your hosts. On the Logical Networks tab of FinanceDataCenter, you should have at least two networks - rhevm and storage. Now, you can add storage to the system.