Network Tab

The Network tab of the System Settings screen (see The System Settings Screen) enables the Platform Administrator to create, edit, and/or delete floating IP address ranges.

The top of this tab contains the following functions:

• Internal Gateway IP: If the Routable Network check box is checked, this field lists the gateway IP address that will be used by the containers/virtual nodes. This IP address must lie outside the specified floating IP ranges. This field does not appear when the Routable Network check box is not checked. See Switching Public and Private Networks.
• Routable Network: The Routable Network check box is checked when the floating IP ranges used by virtual nodes/containers can be directly accessed from the corporate network. When this box is not checked, it means that users cannot access virtual nodes/containers directly; instead, they must access the Gateway hosts in the platform and provide the port number that corresponds to the service they want to reach on a specific virtual node/container. The Cluster Details screen lists the Gateway host and port number to use for each available service. See Viewing Cluster Details, Viewing Training Cluster Details, Viewing Notebook Cluster Details, or Viewing Deployment Cluster Details. This option can be enabled and disabled as needed to accommodate evolving network conditions, such as if a range of IP addresses becomes directly available on the corporate network. Keep in mind that this may require adding, editing, and/or removing floating IP ranges, as described in Adding a New Range and Editing an Existing Range, below. You may also switch back and forth between public (routable) and private (non-routable) container networks, as described in Switching Public and Private Networks.
• Tenant Network Isolation: The Tenant Network Isolation check box is checked when virtual clusters are isolated at the tenant/project level, meaning that clusters in one tenant/project cannot communicate with virtual clusters in any other tenant or project. Clearing this check box removes tenant network isolation, meaning that virtual clusters in one tenant/project can communicate with virtual clusters in all tenants/projects. You must delete all existing virtual clusters before changing this setting, as described in Deleting a Cluster, Deleting a Training Cluster, Deleting a Notebook Cluster, or Deleting a Deployment Cluster. This setting does not affect cluster Isolation Mode (see Cluster Isolation).
• Submit: Click the Submit button when you have finished making changes to the Gateway IP address, network routing, and/or tenant/project network isolation settings.

When the Routable Network option has been enabled as described in Switching Public and Private Networks, this tab contains an Add New Float Range button, which opens the Add Floating IP Range popup (see Adding a New Range). See Network Requirements for an explanation of networking terms and various networking scenarios, including information about routable and non-routable networks. Also, if you need to change your network from routable to non-routable (or vice-versa), you will do so using the Routable Network check box, as described in Switching Public and Private Networks.

The table on this screen contains the following information and functions:

• Name: Name of a floating IP address range.
• Description: Description of the floating IP address range.
• Floating IP Range: Range of addresses that allow network access from outside to the virtual nodes/containers that HPE Ezmeral Container Platform will create as part of future clusters.
• External Interface: NIC selected for this floating IP range. Each host must use the same NIC to access this floating IP range. For example, if you selected the eth0 NIC on the Controller host, then the eth0 NIC on each Worker host must also be able to reach this IP range. You may select a different interface, if available and desired.
• Next Hop: IP address of the external gateway.
• Actions: The following actions are available for each floating IP address range:
  • Delete: Clicking the Delete icon (trash can) deletes the selected floating IP address range.
  • Edit: Clicking the Edit icon (pencil) in the Actions column opens the Edit Floating IP range popup for the selected range. See Editing an Existing Range.

Adding a New Range

To add a new floating IP address range:

1. Click the Add New Float Range button. The Add Floating IP range popup appears.

   

2. Enter the following information:
   • Name: Name of the range.
   • Description: Brief description of the range.
   • Floating IP Range: Starting IP address and ending IP address of the range, plus the CIDR.
   • Floating IP External interface: NIC to be used for this IP address range.
   • Floating IP Next hop: IP address of the external gateway for this IP address range.
3. If your network allows you to ping the next hop IP address, then check the Ping Next hop IP check box. Otherwise, leave it blank.
4. Click Submit to save your changes when finished.

Editing an Existing Range

To edit an existing floating IP address range:

1. In the Actions column of the Network tab, click the Edit icon (pencil) for the floating IP address range you want to edit. The Edit Floating IP range popup appears.

   

2. Edit any or all of the following:
   • Name: Name of the range.
   • Description: Brief description of the range.
   • Floating IP Range: Starting IP address and ending IP address of the range, plus the CIDR.
   • Floating IP External interface: NIC to be used for this IP address range.
   • Floating IP Next hop: IP address of the external gateway for this IP address range.
3. If your network allows you to ping the next hop IP address, then check the Ping Next hop IP check box. Otherwise, leave it blank.
4. Click Submit to save your changes when finished.