Triton initial network configuration

This document builds on the requirements specified in the document entitled Networking layout, and assists you in collecting the information necessary to configure your Triton installation's networking.

MAC addresses

During the configuration process, you will associate each interface on the head node with NIC Tags. To identify each interface, you will need to retrieve it's MAC address along with which network(s) the interface is physically connected to. Note: if you will be enabling link aggregation on the head node, you should choose one of interfaces that form the bundle for this step; the aggregation is added outside the installer for the head node and will be covered in the installation documentation.

For the compute node setup steps (covered later in this documentation) you will require the MAC addresses for the compute nodes in order to associate the NIC Tag with the proper interfaces. Link aggregation - if required - will be configured for the compute nodes in that step, as will the Underlay network.

Configuration details for the admin network

The following information is needed:

• The MAC address of the head node interface to be connected to the Admin network (one of the MAC addresses if this will be a link aggregated connection).
  • Note that this physical interface should not be shared with other traffic (ie, such as the External network, Underlay network, or any other customer networks).
• The IP address to be used for the head node's interface on the Admin network.
• The Netmask for the Admin network.
• The gateway IP address (if any) for the Admin network.
• The starting IP address for the Admin network (normally set to one above the IP used for the head node; controls the next allocated IP address for this network).

Configuration details for the external network

The following information is needed:

• The MAC address of the head node interface to be connected to the External network (one of the MAC addresses if this will be a link aggregated connection).
• The IP address to be used for the head node's interface on the External network.
• The Netmask for the External network.
• The gateway IP address for the External network.
• The VLAN ID for the External network.
• The starting and ending IP addresses for the External network.
• The addresses of the NTP server(s) being used. These can be external or internal, and they can be expressed as either IP or FQDN, but they must resolve. Due to the potential disruptive nature of a failed or drifting NTP server it is highly recommended that more than one NTP server is used.
• The addresses of the DNS server(s) being used. These can be external or internal, and should be expressed as IP addresses.
• The default gateway for the head node; this is most likely going to be the same value as used for the External network above.

Configuration details for the underlay network

The following information is needed:

• Verification that the Underlay network has Jumbo frames (MTU 9000) enabled.
• The Netmask for the Underlay network.
• The gateway IP address for the Underlay network.
• The VLAN ID for the Underlay network.
• The starting and ending IP addresses for the Underlay network.
• Note that this network can share a physical interface with other networks (such as External).
• This interface is not homed on the head node, so no MAC addresses are needed at this point.